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Bid B9-11-12Paving at Novo School

Santa Clara County Office of Education

TABLE OF CONTENTSFOR

PAVING WORKFOR

NOVO COMMUNITY SCHOOLSANTA CLARA COUNTY OFFICE OF EDUCATION

1. Table of Contents Pages 1

2. SCCOE Instructions and Conditions Pages 2 – 7

3. Specifications Pages 8 – 106DIVISION 2 - EXISTING CONDITIONS

SECTION 024113 - SELECTIVE SITE DEMOLITION

DIVISION 3 - CONCRETESECTION 032000 - CONCRETE REINFORCEMENT

DIVISION 31 - EARTHWORKSECTION 311000 - SITE CLEARINGSECTION 312000 - EARTH MOVING SECTION 312333 - TRENCHING AND BACKFILLING

DIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 320124 - PAVING REHABILITATIONSECTION 321000 - CONCRETE PAVINGSECTION 321216 - ASPHALT PAVINGSECTION 328000 - IRRIGATIONSECTION 329000 - PLANTING: LANDSCAPE

DIVISION 33 - UTILITIES SECTION 331116 – WATER UTILITIES - For Reference OnlySECTION 333000 – SANITARY SEWAGE USAGE - For Reference OnlySECTION 334100 - STORM DRAINAGE

4. Bid Form Pages 107-108

Attachments Affirmative Action Nondiscrimination by Supplier Bidding Questionnaire Noncollusion Declaration Drawing - PDF File (Attached)

NOTE: The Table of Contents is to be made a part of the above referenced bid. A.D. Bursch C.P.M. Purchasing Manager

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INSTRUCTIONS AND CONDITIONSFOR

PAVING WORKFOR


NOTICE IS HEREBY GIVEN that the Santa Clara County Office of Education, herein after referred to as the OWNER or SCCOE, calls for sealed bids to be received in the Purchasing Office at 1290 Ridder Park Drive, San Jose, California 95131 by Tuesday, October 4, 2011 @ 3:00 p.m. at which time and place bids will be opened for paving work.

CONTACT Any administrative questions regarding bidding procedures should be directed to Senior Buyer, Nada Cavigliano, at (408) 453-6920.

Questions relating to the Novo site conditions may be directed to Facilities Manager, Joe Beretta @408-453-6861.

Questions relating to bid specifications or plans may be directed to Weston/Miles Architects, Leslie Miles or Sharon Morris @408-779-6686

JOB WALK There will be a job walk on Tuesday, September 27th 2011, at 1:30 PM for the purpose of examining the site conditions at our Novo Community School, 258 Sunol Street, San Jose, CA 95126. Additional bid packages will be made available at this time. It is strongly recommended that all interested parties attend this walk thru.

SITE DRAWINGS Site drawings are available from SCCOE via our purchasing website at: http://www.sccoe.org/depts/purchasing/bidspostingsys.asp , from Weston/Miles Architects, or from San Jose Blue via (ARC) FTP.

Bid Security BondEach Bid shall be accompanied by a certified check, cashier’s check, or Bid bond duly completed on the form provided herewith by a guaranty company authorized to carry on business in the State of California, in an amount equal to at least ten percent (10%) of the sum of the total amount bid, including any options. Said bond is payable without condition to the Santa Clara County Office of Education as a guaranty that the bidder, if awarded the contract, will promptly execute the contract in accordance with the Bid in manner and form required by these contract documents and will furnish. The Bid Security shall be forfeited to the Santa Clara County Office of Education as liquidated damages in the case of failure or neglect of the bidder to furnish, execute and deliver to the Santa Clara County Office of Education the required performance

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http://www.sccoe.org/depts/purchasing/bidspostingsys.asp



bond, payment bond and evidences of insurance, and to enter into, execute and deliver to the Santa Clara County Office of Education the contract on the form provided herewith, within ten (10) days after being notified in writing by the Santa Clara County Office of Education that the award has been made and the contract is ready for execution.

ADDITIONAL BONDS The successful contractor, simultaneously with the execution of the agreement, shall furnish a payment bond in the amount of 100% of the contract price and a faithful performance bond in the amount of 100% of the contract price. Bonds shall be secured from a surety company issued by corporation duly and legally licensed to transact business in the State of California and approved by the Owner. The check or bid bond shall be given as a guarantee that the contractor, upon award, shall execute the contract, in conformity with the contract documents and shall provide the surety bond or bonds as specified therein within five (5) working days after notification of award of the contract to the Contractor.

PREPARATION OF BID FORM Please prepare your bids on the form attached to be submitted at such time and place as is stated in the notice to contractors calling for bids. All blanks in the Bid Form must be appropriately filled in, and all prices must be stated in words and figures. All bids submitted must be in sealed envelopes bearing on the outside the name of the bidder, his address, and the name of the project for which the bid is submitted. It is the sole responsibility of the bidder to see that his bid is received in proper time. Any bid received after the scheduled closing time for receipt of bids will be returned to the bidder unopened.

BRAND NAMES AND NUMBERS 1. Brand names and numbers when given in Bid Form are for reference. Bids on equivalent

items will be considered provided the bid clearly describes the article offered and it is equivalent in quality and utility.

2. State brand and model on each item. If quoting other than the make, model, or brand specified in the Bid Form, state the item offered by the manufacturer's name and model number. Unless the bidder clearly indicates in his bid that he if offering an "equal" product, his bid shall be considered as offering the brand name product referenced in the bid.

TIME OF DELIVERY Time of completion is a part of the bid and must be adhered to. If it is impossible to meet completion stated in Bid Specifications, bidder shall state best completion possible. Time, if stated as a number of days, shall mean calendar days.

SIGNING OF BIDS The signature of all persons signing shall be in longhand and executed by principal duly authorized to make contracts. The bidder's legal name shall be fully stated. Obligations assumed by such signature must be fulfilled.

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NO BID If you are unable to bid, please return the bid and/or Bidding Questionnaire stating reason; otherwise, your name may be removed from our bid list.

TAXES, CHARGES, AND EXTRAS 1. Full contract price as bid to include Sales Tax, Use Tax, or other taxes.

2. No charge for delivery, drayage, express, parcel post, packing, cartage, insurance, license fees, permits, cost of bonds, or any other purpose, except taxes legally payable by the Santa Clara County SCCOE, will be paid unless expressly included and itemized on the bid.

3. The Santa Clara County SCCOE does not pay Federal Excise Taxes. Do not include these taxes in your bid price; however do indicate on the bid the amount of any such tax. The Santa Clara County SCCOE will sign an Exemption Certificate in lieu of such a tax.

QUALIFICATIONS All bidders may be required to furnish evidence of their technical ability, experience, and financial responsibility. No bid will be accepted from, or a contract awarded to, any party or firm in arrears to the Santa Clara County SCCOE, or who is a defaulter as surety, contractor or otherwise within the past twelve (12) months.

AWARD OF CONTRACT 1. Bids will be evaluated on basis of price, compliance to Specifications, and completion date.

2. A written purchase order mailed or otherwise furnished to the successful bidder within the time for acceptance specified, results in a binding contract without further action by either party. The contract shall be interpreted, construed, and given effect in all respects according to the laws of the State of California.

ALTERATION OR VARIATION OF TERMS It is mutually understood and agreed that no alteration or variation of the terms of this bid or purchase order shall be valid unless made or confirmed in writing and signed by the parties hereto, and that no oral understanding or agreements not incorporated herein, and no alterations or variations of the terms hereof unless made or confirmed in writing between the parties hereto shall be binding on any of the parties hereto.

ASSIGNABILITY A contract is not assignable by vendor either in whole or in part. The contract shall extend to and be binding upon and inure to the benefit of the heirs, executors, administrators, successors, and assigns of the respective parties hereto.

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OSHA All material, equipment, or labor shall comply with the required standards of OSHA and CAL OSHA 1973 as last revised.

WARRANTY Vendor warrants to the Santa Clara County SCCOE and/or its SCCOE’s that the goods and/or services covered by this order will conform to the drawings, Specifications, samples, description, and time provisions furnished by the Santa Clara County SCCOE and will be of first class material and workmanship and free from defects; and the Santa Clara County SCCOE reserves the right to cancel the unfilled portion of this order without liability to vendor for breach of this warranty. Goods will be received subject to inspection and acceptance at destination by the Santa Clara County SCCOE and risk of loss before acceptance shall be on vendor. Defective goods rejected by the Santa Clara County SCCOE may without prejudice to any other legal remedy, be held at vendor's risk and returned at vendor's expense. Defects are not waived by acceptance of goods or by failure to notify vendor thereof.

The contractor shall warrant that all materials and workmanship shall be the quality, quantity and character specified and shown, and that any defect due to the use of any improper workmanship or materials discovered and made known to contractor within one (1) year from the filing of the Notice of Completion shall be made good by contractor without additional expense to the Owner.

COMPLIANCE WITH STATUTE Vendor hereby warrants that all applicable Federal and State statutes and regulations and/or local ordinances will be complied with in connection with the sale and delivery of the property furnished.

RIGHTS & REMEDIES FOR DEFAULT 1. In the event any item furnished by the vendor in the performance of the contract or

purchase order shall fail to conform to the Specifications thereof, or the same submitted by the vendor with his bid, the Santa Clara County SCCOE may reject the same, and it shall thereupon become the duty of the vendor to reclaim and remove the same forthwith, without expense to the Santa Clara County SCCOE, and immediately to replace all such rejected items with others conforming to such Specifications or samples providing that should the vendor fail, neglect, or refuse to do so the Santa Clara County SCCOE shall thereupon have the right to purchase in the open market in lieu thereof, a corresponding quantity of any such items to deduct from any moneys due to that, may thereafter become due the vendor the difference between the prices named in the contract or purchase order and the actual cost thereof to the Santa Clara County SCCOE. In the event the vendor shall fail to make prompt delivery as specified of any item, the same condition as to the rights of the Santa Clara County SCCOE to purchase in the open market and to reimbursement set forth above shall apply, except when delivery is delayed by fire, strike, freight embargo, or Act of God, or the government.

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2. Cost of inspection of materials and/or services provided which do not meet Specifications will be at the expense of the vendor.

3. The rights and remedies of the Santa Clara County SCCOE provided above shall be exclusive and are in addition to any other rights and remedies provided by the law or under the contract.

BID RESULTS Bid results are available for inspection upon award in the Purchasing Office, Santa Clara County SCCOE, 1290 Ridder Park Drive, San Jose, California 95131.

PRICE, TERMS, AND CONDITIONS Price, terms, and conditions of this bid are considered valid for sixty (60) days, from date of bid opening, unless the offering party in writing allows for a longer period of time.

1. Any cash discounts given to the SCCOE must be so stated on the bid.

2. Cash discounts taken by the Santa Clara County SCCOE, unless otherwise stated on the bid form shall be computed from the total invoice amount. This amount may include material, labor, taxes, shipping, storage and other related costs.

3. Prompt payment discounts offered for payment taken within a specified time period will not be considered in evaluating offers for award. However, offered discounts will be taken if payment is made within the discount period, even though not considered in the evaluation of offers.

4. In connection with any discount offered, time will be computed from date of complete delivery of the services specified, or from date correct invoices are received, if the latter is later than the date of delivery. Payment is deemed to be made for the purpose of earning the discount on the date of mailing the warrant or check.

MODIFICATIONS Changes in or additions to the Bid Form, recapitulations of the work bid upon alternative proposals, or any other modifications of the Bid Form which is not specifically called for in the contract documents may result in the rejection of the bid as not being responsive to the Bid. No oral or telephonic modification of any bid submitted will be considered, and a telegraphic modification may be considered only if the postmark evidences that a confirmation of the telegram duly signed by the bidder was placed in the mail prior to the bid opening.

ERASURES

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The bid submitted must not contain any erasures, interlineations, or other corrections unless each such correction is suitably authenticated by affixing in the margin immediately opposite the correction the initials of the persons signing the bid.

WITHDRAWAL OF BID Bidders may withdraw their bid either personally or by written request confirmed in the manner specified above at any time prior to the scheduled closing time for receipt of bids.

INTERPRETATION OF PLANS AND DOCUMENTS If a bidder for the proposed contract is in doubt as to the true meaning of any part of the drawings, specifications, or other contract documents, or finds discrepancies in, or omissions from drawings and specifications, bidder may submit to the Purchasing Manager a written request for an interpretation or correction thereof. The person submitting the request will be responsible for its prompt delivery. Any interpretation or correction of the contract documents will be made only by addendum duly issued and a copy of such addendum will be mailed or delivered to each person receiving a set of the contract documents. No oral interpretation of any provision in the contract documents will be made to any bidder.

BIDDERS INTERESTED IN MORE THAN ONE BID No person, firm, or corporation shall be allowed to make, or file, or be interested in more than one bid for the same work unless alternate bids are specifically called for. A person, firm, or corporation that has submitted a subproposal to a bidder, or that has quoted prices or materials to a bidder, is not thereby disqualified from submitting a subproposal or quoting prices to other bidders or making a prime proposal.

LISTING SUBCONTRACTORS Each bidder shall include with the sealed bid a list of the proposed subcontractors on this project as required by the Subletting and Subcontracting Fair Practices Act (Gov. Code Sec. 4100 and following). Forms for this purpose are furnished with the contract documents.

AFFIRMATIVE ACTION 1. The bidder shall comply with the Santa Clara County SCCOE Affirmative Action Employment

Program adopted by the Board of Education on January 13, 1976, especially Section 12, Contract Compliance (a copy of the section attached hereto).

2. A complete copy of the Affirmative Action Employment Program may be requested through the Purchasing Agent, General Services Department, Santa Clara County SCCOE, 1290 Ridder Park Drive, San Jose, California 95131.

3. The bidder shall sign the enclosed "Certification of Nondiscrimination by Supplier" form and submit it with the bid.

CONFLICTING LANGUAGE

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Where conflicting language exists in this bid document, the stricter of the two similar statements shall prevail when it is in the best interest of the SCCOE.

BIDDING QUESTIONNAIRE If you decide not to bid, please return "Bidding Questionnaire" indicating reason. Failure to respond may result in your company being removed from our bid list.

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SPECIFICATIONSFOR

PAVING WORKFOR

WALDEN WEST CENTERSANTA CLARA COUNTY OFFICE OF EDUCATION

SCOPEThe Santa Clara County Office of Education’s Novo Community School, is in need of grading and paving in order to provide the program with a sport court type play surface in the back of the school site. The contractor is to provide these paving services at 258 Sunol Street, San Jose, CA 95126.

COMPLETIONFifteen working days from receipt of Notice to Proceed.

DRAWINGSDetailed drawings may be found on the enclosed PDF file.

SPECIFICATIONS

SECTION 024113 - SELECTIVE SITE DEMOLITION

1.0 GENERAL

1.1 SUMMARY

A. This Section includes all labor, materials, equipment, operations, or methods listed, mentioned, or scheduled on the plans and/or herein specified, including all incidentals necessary and required for completion of work under this Section.

B. Provide demolition services for components of the existing conditions as noted in part 1.5 of this Section.

1.2 RELATED SECTIONS

A. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Special Conditions and Division 1 of these Contract Documents.

B. Section 017400, Construction Cleaning and Waste Management

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1.3 SUBMITTALS

A. Comply with provisions of Section 013300, Submittal Procedures.

B. Obtain and provide permits and notices authorizing building demolition, including permit(s) for transporting and disposing of debris.

C. Provide certificates of severance for utility services.

D. Provide demolition procedures and operational sequence for Architect’s review.

1.4 QUALITY ASSURANCE

A. All work shall conform to the California Building Code in effect at the time of project approval.

1.5 SITE CONDITIONS

A. Existing conditions as noted specifically on the Drawings:

1. Items to be demolished include, but are not limited to: turf field, sidewalk, fencing, site concrete, AC paving, possible removal of existing cold water and sanitary sewer lines if in the way. No demolition debris or any other spoils or material piles may remain on the site. Removal must be ongoing throughout demolition operations.

B. Protection:

1. Erect temporary barriers, fences, guard rails, enclosures, chutes, and shoring to protect personnel, structures, and utilities remaining intact. Erect a temporary perimeter fence, as noted on A1.1 site plan, to protect and not interfere with ongoing activities of the playfields, related services and daily school operations.

C. Maintaining Traffic:

1. Do not close or obstruct streets, sidewalks, alleys, or passageways without permission from authorities having jurisdiction.

2. If required by governing authorities, provide alternate routes around closed or obstructed traffic ways.

3. Provide a coordinated safety plan approved by County Office of Education.

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2.0 PRODUCTS

Not applicable to this Section.

3.0 EXECUTION

3.1 EXAMINATION

A. Verify that areas to be demolished are unoccupied and discontinued in use.

B. Do not commence work until conditions are acceptable to the Architect.

3.2 PREPARATION

A. Remove items scheduled to be salvaged and place in designated storage area.

3.3 DEMOLITION

A. Sprinkle debris and use temporary enclosures as necessary to limit dust to lowest practicable level.

B. Do not use water to the extent of causing flooding or contaminated runoff.

C. Do not use explosives.

D. Break concrete and masonry into sections less than 3 feet in any dimension.

E. Remove all demolished material from site. See part 1.5.A above.

A. Repair all damage to adjacent properties.

3.4 DISPOSAL

A. Remove demolition debris weekly.

B. Do not store or burn materials on site.

C. Transport demolition debris to off-site disposal area.

D. Recycle all materials as far as practical.

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END OF SECTION

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NOVO B9-11-12 – SITE WORKGRADING AND PAVING FOR THE NOVO SCHOOL SPORT COURT

SANTA CLARA COUNTY OFFICE OF EDUCATION

SECTION 032000 - CONCRETE REINFORCEMENT

1.0 GENERAL

1.1 SUMMARY

A. This Section includes all labor, materials, equipment, operations, or methods listed, mentioned or scheduled on the plans and/or herein specified, including all incidentals necessary and required for completion of work under this Section.

B. Provide and install reinforcing steel bars, welded steel wire fabric, fabricated steel bar or rod mats for Portland cement concrete paving, including support chairs, bolsters, bar supports, spacers for supporting reinforcement.



B. Section 024113, Selective Site Demolition

C. Division 31 - Earthwork: All Sections

D. Section 321313, Portland Cement Concrete Paving

1.3 REFERENCES

A. American Society for Testing and Materials (ASTM):

1. ASTM A82 - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement

2. ASTM A615 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

1.4 SUBMITTALS

A. Comply with provisions of Section 013300, Submittal Procedures.

B. Shop Drawings:

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1. Submit fully detailed shop drawings, including bending schedules and bending diagrams. Indicate placing details and size location of reinforcing steel. Shop drawings shall be of such detail and completeness that fabrication and placement at the site can be accomplished without the use of contract drawings for reference.

2. Do not fabricate and place reinforcing steel before the shop drawings review has been completed by the Architect and Structural Engineer and returned to the Contractor. Review of shop drawings by the Architect and Structural Engineer will not relieve the Contractor of responsibility for errors or for failure in accuracy and complete placing of the work.


A. All work shall conform to the Uniform Building Code in effect at the time of approval.

B. Perform concrete reinforcement work in accordance with CRSI, Manual of Standard Practice.

C. Conform to ACI.

D. Submit certified mill test reports (tensile and bending) for each heat or melt of steel prior to delivery of material to the job site. Where reinforcing is required to be welded, mill test reports shall verify the weld ability of the steel.

1.6 COORDINATION

A. Check architectural, mechanical and electrical drawings for anchor bolt schedules and locations, anchors, inserts, conduits, sleeves, and any other items which are required to be cast in concrete.

B. Make necessary provisions as required so that reinforcing steel will not interfere with the placement of such embedded items.

1.7 PRODUCT HANDLING

A. Bundle reinforcement and tag with suitable identification to facilitate shoring, placing and transport.

B. Keep a sufficient supply of tested and approved reinforcement on the site to avoid delaying the work.

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C. Take means necessary to protect reinforcing steel before, during, and after installation and to protect the work and materials of other trades.

D. Store reinforcing steel in a manner to prevent damage, excessive rusting, and fouling with dirt, grease and other bond-breaking coatings.

E. Take necessary precautions to maintain identification after the bundles of reinforcing steel have been broken.

F. In the event of damage, immediately make repairs and replacements necessary to the acceptance of the Architect and at no additional cost to the District.

2.0 PRODUCTS

2.1 MANUFACTURER

A. Muller Construction Supplies, 1230 Yard Ct., San Jose, CA 95133, 408-279-7050, www.mullerconstructionsupplies.com.

2.2 REINFORCING STEEL

A. Reinforcing Steel: Bars for reinforcement shall be deformed, Grade 60 steel, conforming to ASTM A615-68.

1. Finish shall be plain unless indicated as galvanized on Drawings or so specified.

B. Wire:

1. Wire for concrete reinforcement shall conform to ASTM A82.

2. Wire fabric shall conform to ASTM A1865.

2.3 FABRICATION

A. Shop fabricated reinforcement in accordance with details on Drawings and 2001 CBC. Where specific details are not shown or noted, fabricate in conformance with ACI and CRSI.

B. Clean bars of loose rust, loose mill scale and substances which may decrease bond.

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http://www.mullerconstructionsupplies.com/



C. Bend bars cold and accurately to details on final reviewed shop drawings.

2.4 SOURCE QUALITY CONTROL

A. Testing will be performed by the District’s testing laboratory.

B. Tests shall be made in accordance with the 2001 CBC. The testing laboratory will select samples for physical tests of reinforcing steel from material at the place of distribution, test the reinforcing steel and submit results of tests to the Architect for review prior to fabrication.

1. Identified Reinforcing Steel: One tensile test and one bend test shall be made from a specimen from each 10 tons or fraction thereof of each size of reinforcing steel, if reinforcing is taken from bundles identified with heat number, is accompanied by mill analysis and mill test reports, and is properly tagged with an identification certificate.

2. Unidentified Reinforcing Steel: One tensile and one bend test will be made for each 2-1/2 tons of fractions thereof of each size of reinforcing steel.

C. Costs of tests to determine if unidentified steel complies with specified standards will be deducted by the District from the Contract Sum by Change Order.

3.0 EXECUTION

3.1 EXAMINATION

A. Carefully examine the installed work of other trades prior to installing reinforcing steel and verify that such work is complete to the point where work of this Section may commence.

B. Ensure that reinforcing steel is installed in strict accordance with pertinent codes and regulations, the final reviewed Shop Drawings and original design.

C. In the event of discrepancy, immediately notify the Architect. Do not proceed with installation in areas of discrepancy until discrepancies have been fully resolved.

3.2 PLACING REINFORCING STEEL

A. Bending:

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1. Steel reinforcement shall not be bent or straightened in a manner that will injure the material. Bars with kinks or bends not shown on the Drawings shall not be used.

2. Bends for stirrups and ties shall be made around a pin having a diameter not less than two times the minimum thickness of the bar. Bends for other bars, including hooks, shall be made around a pin having a diameter not less than six times the minimum thickness of the bar. All bars shall be bend cold.

B. Placing:

1. Steel reinforcement shall be accurately placed and shall be positively secured and supported by concrete blocks, metal chairs or spacers, or by metal hangers, and shall be in place before placing of concrete commences.

2. The clear spacing between parallel bars shall not be lass than 1-1/2 times the nominal diameter for round bars, and in no case shall the clear distance be less than the 1-1/2 inches nor less than 1-1/3 times the maximum size aggregate.

3. Place reinforcing steel in accordance with the Drawings, final reviewed shop drawings and the CRSI Manual of Standard Practice. Install reinforcement accurately and secure against movement, particularly under the weight of workers and the placement of concrete.

4. Locate reinforcement accurately in the forms and hold in place by means of supports adequate to prevent displacement and to maintain reinforcement at proper distances from form face. Place supports in accordance with CRSI Manual of Standard Practice. Use of wood supports and spacers inside the forms is not permitted.

5. Support reinforcement for slabs in precast concrete blocks or chairs spaced 4'-0" on center (maximum) both ways, staggered. Size blocks or chairs so the reinforcing is maintained at the proper elevation in the slab.

6. Wherever conduits, piping, inserts, sleeves, and other embedded items interfere with placing of reinforcing steel, obtain Architect's approval of methods of procedure before concrete is placed. Bending of bars around openings and sleeves is not permitted.

C. Splices:

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1. Bars in Horizontal members, such as footings, shall be lapped a minimum of 30 bar diameters. Splices of adjacent bars shall be staggered. The splice of wire fabric shall be at least 1-1/2 mesh wide.

2. Tie reinforcing rigidly and securely with steel tie wire at splices, at crossing points and at intersections in the position shown on Drawings. After cutting, bed tie wire in such a manner that concrete placement will not force the wire ends to surface of concrete.

3. Make splices only at those locations shown on the Drawings or as authorized by the Architect and Structural Engineer. Stagger splices in adjacent bars per Class "B" (50 percent within required lap length).

4. Place welded wire fabric in as long lengths as practicable. Wire laps. Lap edges a minimum of 2 inches center to center of selvage wires with laps a minimum of 2 inches greater than transverse wire spacing; offset end laps in adjacent widths.

D. Dowels:

1. All steel dowels shall be placed and securely held in position before the concrete is placed.

2. Tie dowels securely in place before concrete is deposited. In the event there are no bars in position to which dowels may be tied, add #3 bars (minimum) to provide proper support and anchorage. Do not bend dowels after placement of concrete.

E. Do not weld reinforcing steel and attachments to reinforcing steel unless the chemistry of the steel conforms to AWS D12.1-75. Thoroughly clean welding material and wire cuttings from forms for exposed concrete before any concrete is placed. Tack welding of bars is not permitted for fabricating cages or assemblies.

F. Whenever conduits, piping, inserts, sleeves, etc., interfere with the placing of the reinforcing steel as shown on or called for, the Contractor must consult with the Architect and secure in writing the corrective measure or procedure before placing any concrete.

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G. Minimum concrete covering of reinforcing bars shall be as shown on the Drawings.

H. Wire mesh or reinforcing steel in slabs on ground shall be held in the center of the slab using 3" x 3" concrete blocks, height and quantity as required to hold steel at proper height and alignment.

I. Steel reinforcement at the time the concrete is placed shall be free from rust scale, loose mill scale, oil, paint or any coating that will destroy or reduce the bond between steel and concrete.

3.3 FIELD QUALITY CONTROL

A. Installation and placement of reinforcing steel will be inspected by an authorized inspector prior to concrete pour.

END OF SECTION

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SECTION 311000 - SITE CLEARING

1.0 GENERAL

1.1 SUMMARY

A. Provide labor, material, and equipment required for saw cutting, demolishing, removing, and disposing of existing asphaltic concrete pavement, as required, to provide for new work.

B. Provide surface and subsurface demolition as indicated including backfilling of excavations and depressions.

C. Prior to start of demolition of facilities, shut-off, disconnect, cut, and cap underground utility services as required.

D. Remove A.C. pavement driveway and concrete pavement, concrete pads, and A.C. curbing as required.

E. Remove cyclone wire, wood fences and barricades as required.

F. Remove storm drainage piping, catch basins, and manholes as required.

G. Provide tree and shrub protection as required.

H. Coordinate work with capping or sealing of existing utilities.

I. Provide disposal of waste and excess materials.

J. Remove existing irrigation line within the portables foot print & reroute to the satisfaction to the Engineer and school.

1.2 SUBMITTALS

A. Comply with requirements of the Submittals Section.

B. All permits and certificates required for the project, for record purposes.

C. Demolition schedule and proposed methods and operations.

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D. Proposed haul route(s) from the demolition worksite to an authorized disposal site.

E. Arrangements for disposing of waste and excess materials at a legally licensed landfill/disposal facility outside worksite and make all efforts to comply with LEED.

F. Photographs and video taping of existing conditions including striping. File photographs with the County Construction Manager (DCM) prior to start of work.

G. Proposed dust control measures.

H. Proposed noise control measures.

I. Work Schedule for review: A proposed schedule of work items to be performed, and a description of how the work is to be accomplished.


A. Comply with the following Standards: American National Standards Institute, Inc. “American National Standard Safety Requirements for Demolition” (ANSI A10.6 and A10.8).

1.4 REGULATORY AGENCIES

A. Comply with rules and regulations of State of California, California Administrative Code, Title 8, Industrial Relations, Chapter 4, Subchapter 4, “Construction Safety Order.”

B. Comply with applicable local and state agencies having jurisdiction.

C. Comply with governing EPA notification regulations.

D. Secure all required Permits or Certificates for demolition prior to beginning the work.

1.5 PROJECT CONDITIONS

A. Disposition of Existing Improvements:

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B. All materials removed shall become the property of the Contractor; dispose of these materials outside the project site.

1. Do not dispose of removed materials to the general public by sale, gift or in any other manner at the project site.

2. These provisions shall not be construed as limiting or prohibiting sale or disposal of such materials at the Site to duly licensed Contractors or material suppliers, provided materials are removed from construction site by the Contractor.

C. All removal of debris from the site, including removal of inventory to site of storage, is part of this Contract and shall be done by Contractor’s employees and no others.

1.6 SALVAGE

A. Recycle AC pavement and Class II AB where practical.

1.7 PROTECTION

A. Erect and maintain temporary bracing, shoring, lights, barricades, except construction barricades for subsequent new construction, warning signs, and guards necessary to protect public, the County’s employees, adjacent improvements to remain, and adjoining property from damage, all in accordance with applicable regulations.

B. Wet down areas affected by this work as required, to prevent dust and dirt from rising.

1.8 SCHEDULING

A. Coordinate with the Construction Manager in scheduling noisy or dirty work.

1.9 TRAFFIC CIRCULATIONS

A. Ensure minimum interference with roads, streets, driveways, sidewalks, and adjacent facilities.

B. Minimize obstruction to thoroughfares by first obtaining the required approval or permission of the responsible jurisdiction.

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C. Where closing of a vehicular traffic circulation route is necessary, provide adequate directional signs to minimize the potential for confusion. Provide access at all times for emergency vehicles.

2.0 PRODUCTS

Not used.

3.0 EXECUTION

3.1 EXAMINATION

A. Examine areas affected by work and verify the following:

1. The location and layout of crosswalks, striping, and the light guard system.

2. Where existing conditions conflict with representations of the Contract Documents, notify the Construction Manager and obtain clarifications. Do not perform work affecting the conflicting conditions until clarification of the conflict is received.

3.2 PREPARATION

A. Verify that the area to be demolished or removed, has been vacated, and adequate space has been made available to perform the work.

B. Lay out saw cutting and coordinate with related work for which saw cutting is required.

3.3 DEMOLITION

A. If known or suspected hazardous materials are encountered during operations, stop operations immediately and notify the County’s Representative.

B. Perform work in accordance with ANSI A10.6-1969 unless otherwise noted.

C. Provide noise and dust abatement as required to prevent contamination of adjacent areas.

D. Remove all materials not designated as salvage, in their entirety.

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E. If unknown items such as human remains are encountered during operations, stop operations immediately and notify the County’s Representative.

3.4 SAW CUTTING

A. Make new openings neat.

B. Take care not to damage existing AC pavement to remain in place.

3.5 PREPARATION FOR NEW AC PAVEMENT

A. Where demolished surfaces are to receive new AC, Contractor shall restore such substrate to a condition ready to receive the scheduled new AC pavement, including grinding.

3.6 DISPOSAL OF DEMOLISHED MATERIALS

A. Promptly dispose of demolished materials. Do not allow demolished materials to accumulate on-site.

B. Burning of demolished materials is prohibited.


A. The County’s Representative will accompany the Contractor before and after performance of work to observe physical condition of existing structures or improvements involved.

END OF SECTION

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SECTION 312000 - EARTH MOVING

1.0 GENERAL

1.1 SUMMARY

A. Section Includes but is not limited to:

1. Subgrade preparation and grading.

2. Excavating and backfilling.

3. Asphalt concrete surface restoration.

B. Related Work Furnished under other Sections for Conforming to the Provisions of this Section:

1. Excavation.

2. Compaction.

3. Backfill.

C. Related Sections:

1. Section 321216: Asphalt Paving.

1.2 REFERENCES

A. Refer to Section 321216, Asphalt Paving, Article 2.1 Paving Materials.

B. American Society for Testing and Materials (ASTM):

1. C33: Concrete Aggregates.

2. D1557: Moisture Unit Weight Relations of Soils and Soil Aggregate Mixtures.

C. California Code of Regulations (CCR), Title 24, Part 2-Basic Building Regulation, Chapter 24-Excavations, Foundations, and Retaining Walls.

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D. California Department of Transportation (Caltrans): Standard Specifications: Sections 17, 19, and 26.

E. CAL/OSHA, Title 8.

1.3 SITE CONDITIONS

A. General:

1. The Contractor shall so conduct his operations and schedule his cleanup so as to cause the least possible obstruction and inconvenience to public traffic, pedestrians, and adjacent buildings.

2. Protect open excavations, trenches, and the like with fences, covers, and railings as required to maintain safe pedestrian and vehicular traffic passage.

3. Prevent erosion of freshly graded areas during construction and until such time as permanent drainage and erosion control measures have been installed.

4. Fill material shall be temporarily stockpiled in an orderly and safe manner in a location approved by the County.

5. Bench marks, monuments, signs, and other reference points shall be maintained; if disturbed or destroyed, they shall be replaced by the Contractor as directed by Program Manager.

6. Earthwork operations shall be conducted so as to prevent windblown dust and dirt from interfering with the surrounding normal operations. Contractor shall assume liability for all claims related to windblown dust and dirt.

7. Water shall be applied in conformance with applicable provisions of Section 17 of the Caltrans Standard Specifications and with Section 1590 (e) of CAL/OSHA, Title

8. In the event irrigation lines are discovered passing through the project area, these lines shall be reconnected or abandoned to the satisfaction of the County Representative.

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9. The Contractor shall be responsible to provide to the State Water Resources Control Board (SWRCB), all documentation necessary, to obtain the National Pollutant Discharge Elimination System (NPDES) Permit.

B. Environmental Requirements: When unfavorable weather conditions necessitate interrupting filling and grading operations, areas shall be prepared by compaction of surface and grading to avoid collection of water. Adequate temporary drainage shall be provided to prevent erosion. After interruption, compaction specified in last layer shall be reestablished before resuming work.

1.4 SUBMITTALS

A. Imported Materials: Samples of all proposed imported materials, minimum 40 pounds, tagged with source location and supplier shall be submitted to the County’s Representative at least 15 days prior to import. Materials shall not be imported to job site without written approval by the County’s Representative.

2.0 PRODUCTS

2.1 FILL MATERIALS

A. General: Fill material shall be approved by the County’s Representative. Excavated materials from the site may be used if approved. Imported fill, where required, shall be a non-expansive and predominantly granular soil or soil-rock mixture which shall have a plasticity index of 12” or less and is free from organic matter and deleterious substances, and which does not contain materials over 3" in greatest dimension. The material shall contain sufficient clay binder to allow for stable foundation and utility trench excavations.

B. Refer to Section 32 12 16, Asphalt Paving, Article 2.1, Paving Materials.

C. Backfill Material Requirements-Retaining Walls: Except for drain rock, backfill material for use behind retaining walls shall be approved excavated on-site material consisting of a low-plasticity mixture of sand, gravel, and clay or imported fill.

D. Rock Course:

1. Clean free draining mineral aggregate (broken stone, crushed or uncrushed gravel, clean quarry waste, or combination thereof).

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2. Free of adobe, organic matter, loam, volcanic tuff, or other deleterious material. AC grindings may be used, located at the Coyote Creek Golf Course Contact Rich Robinson (408) 842-5591 for delivery.

3. Absorption of water in saturated surface dry condition shall not exceed three percent of oven dry weight of sample.

4. Graded (Laboratory sieves, U.S. Series) to following:

Sieve Size Percentage Passing Sieve3/4-inch 100No. 4 0-5

3.0 EXECUTION

3.1 EXCAVATION

A. General:

1. Surface restoration shall be in kind and in accordance with Section 32 12 16: Asphalt Paving.

2. The base course for permanent asphalt concrete surface restoration shall be Class II Aggregate Base, equal in depth to the existing pavement structural section, but not less than four (4) inches in depth.

3. The wearing surface for permanent surface restoration on improved streets shall be asphalt concrete equal in thickness to the existing pavement but not less than two (2) inches in depth. The asphalt concrete shall be Type B Asphalt Concrete, in accordance with Section 321216: Asphalt Paving.

B. Removal of Excess Excavated Material: Excess material shall be removed by the Contractor off the site in a legal manner and to the satisfaction of The County.

C. Dewatering:

1. Dewatering equipment necessary to drain and keep excavations free of water under all circumstances shall be provided, operated, and removed by the Contractor.

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2. Contractor shall obtain Soils Engineer's approval of proposed method of dewatering.

3. Surface water shall be prevented from flowing into excavation. Accumulated water shall be promptly removed.

4. Dewatering system shall be maintained in place until tops of retaining walls are stabilized by pour of on-grade and first floor slabs.

3.2 GRADING

A. General:

1. All areas covered by the project, including excavated and filled areas and adjacent transition areas, shall be uniformly graded so that finished subsurface grades are at the subgrade elevations based on the finished asphalt grades as shown on the plans minus the asphalt and base. Areas to receive future topsoil shall be graded to 6" below finished grade to allow for such material.

2. Finished surfaces and surfaces to receive paving and aggregate base shall be smooth, compacted, and free from irregular surface drainage and shall not vary more than +0 to -0.05' from the established grade.

3. Ditches, gutters, and swales shall be finished to permit proper surface drainage.

3.3 SUBGRADE PREPARATION

A. Subgrade preparation is required under all paved areas, curbs, gutters, walks or structures.

B. All subgrade preparation to be in accordance with the recommendations of the County’s Representative.

3.4 FILLING

A. General:

1. The placement of fills shall be done under the supervision of the County’s Representative.

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2. Jetting shall be permitted only where approved by the County’s Representative.

3. All areas to receive fills shall be scarified, conditioned, and compacted in accordance with the recommendations of the County’s Representative.

4. Fill material shall be spread in uniform lifts of not more than 8" in uncompacted thickness. Prior to commencing compaction, fills shall be brought to a uniform water content that will permit proper compaction by either aerating the material if it is too wet, or spraying the material with water if it is too dry. Each lift shall be thoroughly mixed before compaction to assure uniform distribution of water content. All fills shall be brought to suitable elevations above grade to provide for anticipated settlement and shrinkage thereof.

5. Fill shall not be dropped on any structure. Backfill shall not be placed around, against, or upon any concrete structure until structure has attained sufficient strength to withstand the loads imposed and the horizontal structural system has been installed.

6. Within the exterior walls of buildings, utility trenches shall be backfilled using approved on-site material, import material, gravel fill or clean sand complying with ASTM C33, installed in 6-inch lifts and mechanically tamped to achieve 85% relative compaction for on-site soils and 90% relative compaction where imported sand backfill is used.

B. Foundation Backfill:

1. Within exterior walls of buildings, foundations shall be backfilled in accordance with the recommendations of the County’s Representative.

2. After approval of compacted subgrade by the County’s Representative, place rock course, moisture barrier, and sand course at areas to be under building slabs. Moisture barrier and sand course shall be installed as specified in the Concrete, Cast-in-Place Section.

3. Outside the exterior walls of buildings, foundations shall be backfilled with approved on-site material or import material compacted to 85% relative compaction, except that the upper 12 inches under paving shall be compacted to 90% relative compaction.

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3.5 COMPACTION AND TESTING

A. General:

1. Compaction testing shall be in accordance with ASTM Test Designation, D1557- 91 latest edition.

2. Each layer of fill and scarified subgrade for all retaining walls, and building shall be compacted in accordance with the recommendations of the County’s Representative. Compaction shall extend not less than 5' beyond building lines and pavement edges (including shoulders).

3. Where fill is required and no immediate or future construction is planned (such as planting areas), each layer of fill and scarified subgrade shall be compacted to not less than 70% relative compaction.

4. Compaction shall be performed using compacting rollers, pneumatic or vibrator compactors, or other equipment and mechanical methods approved by the Geotechnical Engineer.


A. All excavation, filling, and compaction shall be performed under the direct observation of the County’s Representative. The Contractor shall cooperate with the County’s Representative in all aspects of the work. Materials placed or improvements constructed in the absence of the County’s Representative’s approval to proceed shall be presumed to be defective and, at the discretion of the County’s Representative shall be removed and replaced at no cost to the Owner. The County’s Representative shall be notified at least 48 hours prior to required observation or testing.

B. Finish soil grade tolerance at the completion of grading:Building and paved areas: +0 to -0.05 feet.Other areas: 0.10 feet.

END OF SECTION

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SECTION 312333 - TRENCHING & BACKFILLING

1.0 GENERAL

1.1 SUMMARY


1. Select Backfill Material.

2. Aggregate Base.

3. Detectable Tape.

4. Trench Excavation.

5. Pipe Bedding.

6. Trench Backfill.

7. Trench Surfacing.

B. Related Work Furnished under other Sections but Conforming to the Provisions of this Section:

1. Excavation.

2. Compaction Testing.


1. Section 331116: Water Utilities.

2. Section 334100: Storm Drainage.

3. Section 333000: Sanitary Sewerage.

4. Section 312000: Earth Moving

1.2 SYSTEM DESCRIPTION

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A. Definitions:

1. A trench is defined as an excavation in which the depth is greater than the width of the bottom of the excavation.

2. Excavations for appurtenant structures, such as but not limited to manholes, transition structures, junction structures, vaults, valve boxes, catch basins, thrust blocks, and boring pits shall be deemed to be in the category of trench excavation.

B. Unless otherwise indicated on the Drawings, all excavation for pipelines shall be open cut.

1.3 REFERENCES

A. California Department of Transportation (Caltrans):

1. Standard Specifications.

2. Standard Test Methods: No. 202.

B. CAL/OSHA Construction Safety Orders.

C. American Society for Testing and Materials (ASTM)

1. D1557: Moisture Unit Weight Relation of Soils and Soil Aggregate Mixtures.


A. Perform all work in accordance with the County and Agency recommendations.

1.5 SITE CONDITIONS

A. Refer to Section 31 20 00, Earth Moving.

2.0 PRODUCTS

2.1 MATERIALS

A. Select backfill material shall be sand, granular material, or native soil, as approved by the Soils Engineer, free from organic material, of the quality herein

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specified. Select backfill material shall have size and gradation falling within the following limits when determined by California Test No. 202:

Sieve Size Percentage Passing Sieve1 inch 100No. 4 50-100No. 200 5 max.

The minus 200 portion of the material must be as approved by the Soils Engineer.

B. Aggregate Base: Aggregate base shall be Class 2 (R-value) 78 min., 3/4 inch maximum size) and shall meet the requirements of Section 26 of the Caltrans Standard Specifications.

C. Detectable Tape: Detectable tape shall be 5.5 mil composition film containing metalized foil laminated between layers of inert plastic film, such as Detectable Terra Tape or approved equal. The tape shall be highly resistant to alkalis and acids found in the soil. The tape, when buried 4 feet deep, shall be detectable by buried pipe or cable locating equipment. The tape shall be 3 inches wide and bear a continuous printed message warning of the type of utility buried beneath it. The tape shall be used over all non-metallic pipe installed.

3.0 EXECUTION

3.1 PREPARATION

A. General:

1. Prior to trenching, the Contractor shall excavate at locations specifically indicated on the plans, where new lines cross other utilities of uncertain depth and determine the elevation of the utility in question to ensure that the new line will clear the potential obstruction.

2. The Contractor shall contact Program Manager and County for assistance in locating existing utilities on Campus.

3. If after excavation, a crossing utility does present an obstruction, then the line and grade of the new line will be adjusted as directed by the engineer to clear the utility.

3.2 TRENCH EXCAVATION

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A. General:

1. Excavation shall include removal of all water and materials that interfere with construction. The Contractor shall remove any water which may be encountered in the trench by pumping or other methods during the pipe laying, bedding and backfill operations. Material shall be sufficiently dry to permit approved jointing.

2. Excavation shall include the construction and maintenance of bridges required for vehicular and pedestrian traffic, support for adjoining structures, and where necessary, the rearrangement and repair of adjoining utilities.

3. It shall be the Contractor's responsibility to direct vehicular and pedestrian traffic through or around his work area at all times.

4. The Contractor shall relocate, reconstruct, replace or repair, at his own expense, improvements which are in the line of construction or which may be damaged, removed, disrupted or otherwise disturbed by the Contractor.

This provision applies to all surface improvements of whatever nature such as walls, fences, above-grade utilities, landscaping, paving, structures, or other physical features whether shown on the Drawings or not and to all subsurface improvements such as utilities which are indicated on the Drawings or marked in the field. The Contractor shall connect such utilities to existing systems and leave all in a workable and operating condition.

B. Existing Paving and Concrete:

1. Existing pavement over trench shall be sawcut, removed, and hauled away from the job. Existing pavement shall be neatly sawcut along the limits of excavations. If a longitudinal pavement joint or edge of pavement is located within three feet of the limit of excavation, all intervening pavement shall be removed and replaced after completion of backfilling.

2. Existing concrete over the trench shall be sawcut to a full depth in straight lines either parallel to the curb or at right angles to the alignment of the sidewalk. No section to be replaced shall be smaller than 30 inches in either length or width. If the sawcut would fall within 30 inches of a

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construction joint, expansion joint, or edge, or within 12 inches of a score mark, the concrete shall be removed to the joint, edge, or mark..

3. Boards or other suitable material shall be placed under equipment outrigging to prevent damage to paved surfaces.

C. Trench Width:

1. The maximum allowable trench widths at the top of the pipe shall be as follows:

Pipe Type Trench Width (Max.)Copper Outside diameter of barrel plus 18 inchesGalvanized Iron "Plastic – PVC "Vitrified Clay "Cast-Iron Outside diameter of barrel plus 24 inchesDuctile-Iron Reinforced Concrete "

a. The maximum trench width shall be inclusive of all shoring.

b. If the maximum trench width is exceeded, the County Representative may direct the Contractor to encase or cradle the pipe in concrete at no additional cost to the County.

2. For pipes 3 inch diameter and larger, the free working space on each side of the pipe barrel shall not be less than 6 inches.

D. Open Trench:

1. The maximum length of open trench shall be the coordination between the Construction Manager and the Contractor to establish the distance necessary to accommodate the amount of pipe installed in a single day. No trenches shall be left open at the end of the day.

2. Provisions for trench crossings and free access shall be made at street crossings, driveways, water gate valves, and fire hydrants.

E. Excavation Bracing:

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1. The excavation shall be supported and excavation operations conducted in accordance with the California Industrial Accident Commission and CAL/OSHA.

2. The Contractor shall, at his own expense, furnish, put in place, and maintain such sheeting and bracing as may be required to support the sides of all excavations (whether above or below the pipe grade), and to prevent any movement which could in any way diminish the required trench section or otherwise injure or delay the work. The sheeting and bracing shall be withdrawn in a manner such as to prevent any earth movement that might overload the pipe.

F. Excavated Material:

1. Excavated material not required for backfill shall be immediately removed and properly disposed of in a legal manner by the Contractor.

2. Material excavated in parking lot shall be laid alongside the trench no closer than two feet from the trench edge and kept trimmed to minimize inconvenience to public traffic.

3. Provisions shall be made whereby storm water can flow uninterrupted in gutters or drainage channels.

3.3 PIPE BEDDING

A. Bedding Excavation: The trench shall be excavated below the grade of the pipe bottom in accordance with the following minimum depths, whichever is greater:

Pipe Type DepthCopper 3"Galvanized Iron 3"Plastic 2" and smaller 3"Cast-Iron 6"Ductile-Iron 6"Plastic 6"Reinforced Concrete 6"Vitrified Clay 6"

B. Stabilization of Trench Bottom: When the trench bottom is unstable due to wet or spongy foundation, trench bottom shall be stabilized with gravel or crushed rock. The County’s Representative will determine the suitability of the trench

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bottom and the amount of gravel or crushed rock needed to stabilize a soft foundation. Soft material shall be removed and replaced with gravel or crushed rock when ordered by the County’s Representative at no additional cost to the County.

C. Placement of Bedding Material: The trench bottom shall be cleaned to remove all loose native material prior to placing select backfill material. Sufficient select backfill material as specified in Paragraph 2.1.A (above) shall be placed in trench and tamped to bring trench bottom up to grade of the bottom of pipe. The relative compaction of tamped material shall be not less than 90 percent. It is the intention of these requirements to provide uniform bearing under the full length of pipe to a minimum width of 60 percent of the external diameter.

3.4 TRENCH BACKFILL

A. Initial Backfill:

1. Prior to trench backfill, the condition of the trench and laying of pipe must be I Inspected and approved by the County’s Representative.

2. Select backfill material as specified in Paragraph 2.1.A (above) shall be used for initial backfill. After the pipe has been properly laid and inspected, select backfill material shall be placed on both sides of the pipe and compacted to final depth as follows:

Pipe Type DepthPlastic: 2-1/2 inch & smaller 6" above top of pipeCast-Iron "Copper "Galvanized Iron "Ductile-Iron 12" above top of pipePlastic – PVC: 3" and larger "Vitrified Clay "Reinforced Concrete 1/2 outside diameter of pipe

(pipe springline)

3. Compaction: Initial backfill compaction shall be by mechanical means. The initial backfill material shall be hand tamped in layers not exceeding 4 inches in uncompacted depth and shall be brought up uniformly on both sides of the pipe to avoid bending or distortional stress. After handtamping, the relative compaction of the initial backfill material shall be not less than 90 percent based on ASTM Test D1557, latest edition.

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4. In landscaped areas, granular backfill shall be capped by at least 2 feet of compacted native soil. In pavement areas, granular backfill shall be capped by at least 1 foot of compacted native soil.

B. Pipe Detection Material: In trenches containing pressurized pipes, including ductile iron pipe, detectable tape shall be placed directly above the pipe and shall be connected to all valves, existing exposed detectable tape, and other appurtenances as appropriate.

C. Subsequent Backfill:

1. Above the level of initial backfill, the trench shall be backfilled with native material from trench excavation or with imported select backfill material (Contractor's option). Subsequent backfill shall be free of vegetable matter, stones or lumps exceeding 3 inches in greatest dimension, and other unsatisfactory material. The County’s Representative shall approve the backfill material prior to placement.

2. Subsequent backfill compaction shall be by mechanical means with backfill material placed in layers not exceeding eight inches in loose depth. Each layer shall be thoroughly compacted before succeeding layers are placed. The use of machine tampers, except manually held types, shall not be permitted.

3. Subsequent backfill shall be compacted to a relative compaction of not less than 90 percent except the relative compaction within pavement areas shall be in accordance with the recommendations of the County’s Representative as referenced in Section A1.

4. Subsequent and final trench backfill within building areas shall be compacted to a minimum relative compaction of 90 percent to the surface of the surrounding ground. Trench backfill outside building areas or not in street or paved areas, shall be compacted to a minimum relative compaction of 85 percent to the surface of the surrounding ground.

5. A trench cutoff plug of impermeable material as approved by the Engineer, shall be installed where a trench enters a building or pavement area.

3.5 COMPACTION TESTING

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A. Compaction testing will be in accordance with the recommendations of the County’s Representative.

3.6 TRENCH SURFACING

A. General: In unimproved areas, the trench surface shall be restored to its original condition. No mounds of earth shall be left along the trench.

B. Temporary Surfacing:

1. Temporary surfacing shall be a minimum of 2 inches of cutback asphalt on 10 inches of Class 2 Aggregate Base and shall be placed at all trench locations subject to vehicular or pedestrian traffic.

2. Temporary surfacing shall be laid within one day after backfilling (except where the Contractor elects to place permanent surfacing within this time period).

3. Before the trenching area is opened for traffic, all excess dirt, rock, and debris shall be removed, the street surface shall be swept clean and the pavement shall be washed down with a water truck and pressure nozzle.

4. Temporary surfacing shall be maintained to prevent the occurrence of mudholes and prevent the surface from settling below one inch or rising more than one inch from the existing pavement grade.

END OF SECTION

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SECTION 320124 - PAVING REHABILITATION

1.0 GENERAL

1.1 SUMMARY

A. Asphalt concrete surface restoration.


A. Section 312333 - Trenching and Backfilling.

B. Section 331116 - Water Utilities.

C. Section 334100 - Storm Drainage Utilities.

D. Section 333000 - Sanitary Sewerage Utilities.

1. 3 REFERENCES

A. Refer to Section 32.12.16: “Asphalt Paving”, Article 2.1, Paving Materials.

2.0 PRODUCTS

Not used.

3.0 EXECUTION

3.1 GENERAL

A. Surface restoration shall be in kind and in accordance with Section 02513: Paving and Surfacing.

3.2 ASPHALT CONCRETE SURFACE RESTORATION

A. The base course for permanent asphalt concrete surface restoration shall be Class II Aggregate Base, equal in depth to the existing pavement structural section, but not less than eight (8) inches in depth.

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B. The wearing surface for permanent surface restoration on improved streets shall be asphalt concrete equal in thickness to the existing pavement but not less than two (2) inches in depth. The asphalt concrete shall be Type B Asphalt Concrete, in accordance with Section 02500: Paving and Surfacing.

END OF SECTION

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SECTION 321000 - CONCRETE PAVING

1.0 GENERAL

1.1 SUMMARY

A. Provide requirements for materials, fabrications and installation of:

1. Concrete mix design.

2. Formwork for paving walks, curbs and gutters.

3. Reinforcement.

1.2 SUBMITTALS

A. Comply with requirements of the Submittals Section.

B. Submit product data for proprietary materials and items, admixtures, joint systems, curing compounds, dry-shake finish materials, and others if requested by Architect.

C. Submit design mixes for each class of concrete. Include revised mix proportions when characteristics of materials, project conditions, weather, test results, or other circumstances warrant adjustments.

D. Submit laboratory test reports for evaluation of concrete materials and mix design tests.

E. Provide material certificates in lieu of material laboratory test reports when permitted by Architect.

1. Provide material certificates signed by manufacturer and Contractor certifying that each material item complies with or exceeds requirements.

2. Provide certification from admixture manufacturers that chloride content complies with requirements.


A. Comply with latest edition of the following standards and regulations:

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1. American Society for Testing and Materials (ASTM).

2. California Department of Transportation (CALTRANS) Standard Plans (CSP) and Standard Specifications (CSS).

3. Local requirements where they are applicable.

B. Prevent damage to adjacent concrete curbs, walks, etc, during installation.

1. Repair any damage to concrete edges or breaks in concrete at no cost to the County, by removal and replacement of complete sections.

2. Patching will not be acceptable.

1.4 SITE CONDITIONS

A. Submit to Architect in writing any discrepancy between existing conditions and the Contract Documents.

B. Commencement of any part of the work shall constitute acceptance of existing site conditions as satisfactory.

C. Traffic Control: Maintain access for vehicular and pedestrian traffic as required by the County representative.

2.0 PRODUCTS

2.1 CONCRETE

A. Provide concrete materials conforming to the applicable requirements for minor concrete in CSS Section 73 Concrete Curbs and Sidewalks and Section 90 Portland Cement Concrete except as follows:

1. The maximum size of aggregate used for extruded or slip-formed curb construction are optional, but in no case shall the maximum size be larger than 1 inch or smaller than 3/8 inch.

2. The cement content of the minor concrete shall be not less than 470 pounds per cubic yard except that when extruded or slip-formed curbs are constructed using a 3/8-inch maximum size aggregate the cement content shall be not less than 564 pounds per cubic yard.

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3. Provide glare reduction admixture in concrete design mix for pedestrian sidewalks as shown on plans*.

4. Minimum concrete compression strength of 3000 psi.

2.2 SIDEWALK FORMS

A. General: Provide forms of wood or steel, straight and of sufficient strength to resist springing during depositing and consolidating concrete, and of a height equal to the full depth of the finished sidewalk.

B. Wood forms:

1. Provide surfaced planks, 2-inch nominal thickness, straight and free from warp, twist, loose knots, splits or other defects.

2. Wood forms shall have a nominal length of 10 feet, with a minimum of 3 stakes per form, at maximum spacing of 4 feet.

3. Corners, deep sections, and radius bends shall have additional stakes and braces, as required.

4. Radius bends may be formed with 3/4-inch boards, laminated to the required thickness.

C. Steel forms:

1. Provide channel-formed sections with a flat top surface and with welded braces at each end and at not less than 2 intermediate points.

2. Form ends shall be interlocked and self-aligning.

3. Forms shall include flexible forms for radius forming, corner forms, form spreaders, and fillers.

4. Forms shall have a nominal length of 10 feet, with a minimum of 2 welded stake pockets per form.

5. Stake pins shall be solid steel rods with chamfered heads and pointed tips, designed for use with steel forms.

2.3 CURB AND GUTTER FORMS

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A. Conform to the requirements specified for sidewalk forms.Provide rigid forms for curb returns.

B. Benders of thin plank forms may be used as follows:

1. For curb or curb returns with a radius of 10 feet or more.

2. Where grade changes occur in the return.

3. Where the central angle is such that a rigid form with a central angle of 90 degrees cannot be used.

C. Back forms for curb returns may be made of 1-1/2 inch benders, for the full height of the curb, cleated together.

2.4 OTHER MATERIALS

A. Concrete Curing Material:

1. Burlap: Conforming to AASHTO M182 with a weight of 14 ounces or more per square yard when dry.

2. Impervious Sheeting: Comply with ASTM C171.

3. Liquid Membrane Curing Compound: Comply with ASTM C309. Provide curing compound free of paraffin or petroleum.

B. Expansion Joint Fillers: Comply with ASTM D1751 or provide a resin impregnated fiberboard conforming to the physical requirements of ASTM D1752.

C. Reinforcement: Provide dowels, reinforcement bars and welded wire mesh conforming to the requirements in CSS Section 52, Reinforcement.

D. Concrete Wheelstops: Precast reinforced concrete wheelstop; 2500-psi minimum compressive strength.

1. Dimensions: 3 feet long by 9 inches wide by 5-1/4 inches high, with beveled top edges.

2. Reinforcing: Two longitudinal #3 reinforcing bars.

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3. Epoxy setting adhesive: As recommended by manufacturer of wheelstops.

4. Setting Dowels: Galvanized steel, 1/2 inch diameter, 15 inch minimum length.

5. Product: Subject to compliance with requirements, provide one of the following:

6. Equal product in accordance with Division 1 requirements for product substitutions.

3.0 EXECUTION

3.1 EXAMINATION

A. Examine surfaces and areas to receive sidewalks, curbs and gutters to establish acceptable conditions.

1. Do not begin installation until defects have been corrected.

3.2 SUBGRADE PREPARATION

A. Sidewalk Subgrade:

1. Remove material deflecting more than 2-inch under the roller to a depth of 4 inches below subgrade elevation and replace with an approved granular material.

2. Then compact new material at 90% relative compaction as per plan detail.

3. Test completed subgrade for grade and cross section with a template extending the full width of the sidewalk and supported between side forms.

B. Curb and Gutter Subgrade:

1. Provide subgrade of materials equal in bearing quality to the subgrade under the adjacent pavement.

2. Place and compact additional subgrade material as needed.

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3. Test subgrade for grade and cross section by means of a template extending the full width of the curb and gutter.

C. Maintenance of Subgrade:

1. Maintain subgrade in a smooth, compacted condition, in conformity with the required section and established grade until the concrete is placed.

2. Prepare and protect subgrade so as to produce a subgrade free from frost and excessive moisture when the concrete is deposited.

3.3 FORM SETTING OF SIDEWALKS

A. Set forms for sidewalks with the upper edge true to line and grade and held rigidly in place by stakes.

1. After forms are set, check grade and alignment with a 10-foot straightedge.

2. Forms shall conform to lien and grade with an allowable tolerance of 1/4 inch in any 10-foot long section.

3. Forms shall have a transverse slope with the low side adjacent to the roadway unless otherwise indicated on Drawings.

B. Coat forms with form oil prior to each time concrete is placed. Wood forms may be thoroughly wetted with water before concrete is placed, except that with probable freezing temperatures, oiling is mandatory.

C. Do not remove side forms within 12 hours after finishing has been completed.

3.4 FORM SETTING OF CURBS

A. Set forms for curbs to alignment and grade conforming to the dimensions of the curb.

1. Hold forms rigidly in place by the use of stakes; use clamps, spreaders, and braces where required to ensure rigidity.

2. Retain forms on the front face of the curb for at least 2 hours but not more than 6 hours after the concrete has been placed.

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3. Forms at the back of curb shall remain in place until the face and top of the curb have been finished.

B. Do not remove gutter forms while the concrete is sufficiently plastic to slump in any direction.

C. Forms shall be cleaned and coated with form oil each time before concrete is placed.

D. Wood forms may be thoroughly wetted with water before concrete is placed, except that with probable freezing temperatures, oiling is mandatory.

3.5 SOIL TREATMENT OF SIDEWALK AREAS WITH HERBICIDES

A. Just prior to placing pavement for driveways, and sideways, apply soil treatment with herbicide.

1. The herbicide label shall:

a. Bear evidence of registration under Federal Insecticide, Fungicide, and Rodenticide Act for weed control application.

b. Provide recommended rates of application.

c. Take precautions to protect desirable vegetation from herbicide treatment.

B. Coordinate with Architect before application of herbicide is made and obtain concurrence with the proposed application.

3.6 PLACEMENT OF REINFORCING

A. General: Comply with CSS Section 52 - Reinforcement.

B. Clean reinforcement of loose rust and mill scale, earth, ice, or other bond-reducing materials.C. Arrange, space, and securely tie bars and bar supports to hold reinforcement in

position during concrete placement. Maintain minimum cover to reinforcement.

D. Install welded wire fabric in lengths long as practicable. Lap adjoining pieces at least 1 full mesh and lace splices with wire. Offset laps of adjoining widths to prevent continuous laps in either direction.

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3.7 CONCRETE PLACEMENT AND FINISHING OF SIDEWALKS

A. Placement: Place concrete in forms in 1 layer or thickness to provide a compacted and finished sidewalk of thickness indicated.

1. After concrete has been placed in forms, strike off using side forms to bring the surface to proper section to be compacted.

2. Tamp and consolidate concrete with a suitable wood or metal tamping bar.

3. Finished surface of the walk shall not vary more than 1/4 inch from the testing edge of a 10-foot straightedge. Irregularities exceeding the above shall be satisfactorily corrected.

4. The surface shall be divided into rectangular areas by means of contraction joints spaced at intervals equal to the width of the sidewalk or 5 feet, whichever is less.

B. Concrete Finishing:

1. When most of the water sheen has disappeared, and just before the concrete hardens, finish the surface to a smooth and uniformly fine granular or sandy texture free of waves, irregularities, or tool marks.

2. Produce a scored surface by brooming with a fiber-bristle brush in a direction transverse to that of the traffic.

C. Concrete Sandblasting:

1. Allow 28 days to elapse after pouring concrete before beginning sandblasting.

2. Perform in a continuous operation using same work crew to maintain continuity of finish.

3. Blast corners and edges of patterns using backup boards.

4. Use same nozzle and nozzle pressure and blasting technique as used for mock up.

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5. Avoid blasting that reveals nozzle path or direction.6. Maintain control of abrasive grit and concrete dust.

7. Exposed aggregate and surrounding matrix surfaces to match accepted mock up panel.

8. Use same grit as was used for accepted mock up panel.

9. Sandblast to obtain required “reveal” (defined as projection of coarse aggregate from the matrix.

10. Brush – remove the cement matrix, and expose the fine aggregate – no reveal.

11. Light – sufficient to expose fine aggregate with occasional exposure of coarse aggregate and to obtain a maximum reveal of 1/16 inch.

12. Medium – sufficient to generally expose coarse aggregate with slight reveal – maximum reveal ¼ inch.

13. Heavy – sufficient to generally expose coarse aggregate to a maximum projection of a third of the aggregate diameter. Reveal is ¼ to ½ inch. Surface is rugged and uneven.

D. Edge and Joint Finishing:Finish slab edges, including those at formed joints, with an edger having a radius of 1/8 inch.

Edge transverse joints before brooming. Brooming shall eliminate the flat surface left by the surface face of the edger.

Corner and edges which have crumbled and areas which lack sufficient mortar for proper finishing shall be cleaned and filled solidly with a properly proportioned mortar mixture and then finished.

E. Contraction Joints:

1. Form contraction joints in the fresh concrete by cutting a groove in the top portion of the slab to a depth of at least one-fourth of the sidewalk slab thickness.

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2. As an option, saw-cut a groove in the hardened concrete with a power-driven saw.

3. Sawed joints shall be constructed by sawing a groove in the concrete with a 1/8-inch blade to the depth indicated.

4. Provide and ample supply of saw blades on the job before concrete placement is started.

5. Have at least 2 standby sawing units in good working order available at the jobsite at all times during the sawing operation.

F. Expansion Joints:

1. Install transverse expansion joints at sidewalk returns and opposite expansion joints in adjoining curbs.

2. Where the sidewalk is not in contact with the curb, transverse expansion joints shall be installed at intervals of not less than 20 or more than 25 feet.

3. Fill transverse expansion joints with 1/2-inch joint filler strips.

4. Place joint filler with top edge 1/4 inch below the finish surface.

5. Hold in place with steel pins or other devices to prevent warping of the filler during floating and finishing.

6. Immediately after finishing operations are completed, joint edges shall be rounded with an edging tool having a radius of 1/8 inch, and concrete over the joint filler shall be removed.

G. Surface Uniformity: Provide a completed surface uniform in color and free of surface blemishes and tool marks.

3.8 PLACEMENT AND FINISHING OF CURBS AND GUTTERS

A. Place and thoroughly consolidate concrete by tamping and spading with approved mechanical vibrators.

B. Concrete Finishing:

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1. Tool edges of the gutter and top of the curb with an edging tool to a radius of 1/2-inch.

2. Float and finish surfaces with a smooth wood float until true to grade, section and uniform in texture.

3. Brush floated surfaces with a fine-hair brush using longitudinal strokes.

C. Immediately after removing the front curb form, rub the face of the curb with a wood or concrete rubbing block and water until blemishes, form marks, and tool marks have been removed.

1. While still wet, brush the surface in the same manner as the gutter and curb top.

2. Finish the tip surface of gutter and entrance drive to grade with a wood float.

D. Except at grade changes or curves, finished surfaces shall not vary more than 1/4 inch from the testing edge of 10-foot straight edge. Irregularities exceeding the above shall be satisfactorily corrected.

E. Joints:

1. Construct expansion joints and contraction joints at right angles to the line of curb and gutter.

2. Construct contraction joints by means of 1/8-inch thick separators, of a section conforming to the cross section of the curb and gutter.

a. Construct contraction joints directly opposite contraction joints in abutting concrete pavement.

b. Where curb and gutter do not abut concrete pavements, place contraction joints so that monolithic sections between curb returns will not be less than 5 feet or greater than 15 feet in length.

c. Remove separators as soon as practicable after concrete has set; preserve the width and shape of the joint.

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F. Expansion Joints:

1. Form expansion joints by means of preformed expansion-joint filler material cut and shaped to the cross section of curb and gutter.

2. Provide expansion joints in curb at the end of each return.

3. Provide expansion joints in curb and gutter directly opposite expansion joints of abutting concrete pavement.

4. Provide expansion joints of the same type and thickness as joints in the pavement.

5. Where curb and gutter do not abut concrete pavement, provide expansion joints at least 1/2-inch in width at intervals not exceeding 120 feet.

6. Provide expansion joints in non-reinforced concrete gutter at location indicated.

G. Drainage Inlets: Construct curbs and gutters at drainage inlets in coordination with site drainage work.

3.9 CURB-FORMING MACHINES

A. Curb-forming machines for constructing curb and gutter will be approved based on trial use on the job.

B. Discontinue use of the equipment at any time during construction the equipment produces unsatisfactory results; the work shall continue as specified above.

1. Remove unsatisfactory work and reconstruct for the full length between regularly scheduled joints.

2. Removed portions shall be disposed of as directed.

3.10 CURING AND PROTECTION

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A. Cure exposed concrete surfaces by one of the following methods.

B. Mat Method:

1. Cover the entire exposed surface with 2 or more layers of burlap; mats shall overlap each other at least 6 inches.

2. Prior to placing mats on concrete surface, thoroughly wet with water.

3. Continuously keep mats in a saturated condition and in intimate contact with concrete for not less than 7 days.

C. Impervious Sheeting Method:

1. Wet the entire exposed surface with a fine spray of water and then cover with impervious sheeting material.

2. Lay sheets directly on the concrete surface and overlap 12 inches when a continuous sheet is not used.

3. Provide impervious sheeting at least 18 inches wider than the concrete surface to be cured.

4. Securely weight sheeting down with heavy wood planks, or by placing a bank of moist earth along edges and laps in the sheets.

5. Sheets shall be satisfactorily repaired or replaced if torn or otherwise damaged during curing.

6. The curing sheet shall remain on the concrete surface to be cured for not less than 7 days.

D. Membrane-Curing Method:

1. Cover the entire exposed surface with a membrane-forming curing compound.

2. Apply curing compounds in 2 coats by hand-operated pressure sprayers as recommended by manufacturer.

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3 Apply an additional coat to all surfaces showing discontinuity, pinholes or other defects.

4. Concrete surfaces that are subjected to heavy rainfall within 3 hours after curing compound has been applied shall be resprayed.

5. Protect concrete surfaces to which membrane curing compounds have been applied.

6. Any area covered with curing compound and damaged by subsequent construction operations within the 7-day curing period shall be resprayed.

3.11 BACKFILL

A. After curing, remove debris; backfill, grade and compact the area adjoining the concrete to conform to the surrounding area in accordance with lines and grades indicated.

3.12 CLEANING AND PROTECTION

A. Comply with requirements of the Cleaning Section.

B. Protect completed concrete from damage until accepted.

C. Repair damaged concrete and clean concrete discolored during construction.

1. Concrete that is damaged shall be removed and reconstructed for the entire length between regularly scheduled joints.

2. Refinishing the damaged portion will not be acceptable.

3. Remove damaged portions and dispose of as directed.

END OF SECTION

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SECTION 321216 - ASPHALT PAVING

1.0 GENERAL

1.1 SUMMARY

A. Section Includes (but is not necessarily limited to):

1. Asphalt Concrete Paving.

2. Liquid Asphalt and Asphalt Emulsion.

3. Aggregate Base.Fog seal coat.Prime coat.

4. Striping court area and parking

B. Related Work Furnished under other Sections but Conforming to the Provisions of this Section:

1. Subgrade preparation.

2. Aggregate Base installation.


1. Section 312000: Earth Moving.

1.2 REFERENCES


1. A615: Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

2. C150: Portland Cement.

3. D1557: Moisture Unit Weight Relations of Soils and Aggregate Mixtures Using a 10 lb (4.5 kg) Rammer and 18 in. (457 mm) Drop.

4. D1682: Breaking Loads and Elongation of Textile Fabrics.

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B. California Code of Regulations (CCR): Title 24, Chapter 2-71, Site development Requirements for Handicapped Accessibility.

C. California Department of Transportation (C.D.T.):

1. Standard Specifications:

a. Section 26 Aggregate Bases.

b. Section 37 Bituminous Seals.

c. Section 39 Asphalt Concrete.

d. Section 51 Concrete Structures.

e. Section 52 Reinforcement.

f. Section 73 Concrete Curbs and Sidewalks.

g. Section 90 Portland Cement Concrete.

h. Section 91 Paint.

i. Section 92 Asphalts.

j. Section 93 Liquid Asphalts.

k. Section 94 Asphaltic Emulsions.

2. Traffic Manual.

3. Highway Design.

D. Institute of Transportation Engineers: Transportation and Traffic Engineering Handbook.

1.3 SUBMITTALS

A. Requirements: Refer to Submittals Section.

B. Asphalt Concrete Paving:

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1. Provide two copies of material certificates signed by the material producer and the Contractor, certifying that each material item complies with or exceeds specified requirements.

2. The Contractor shall furnish a certified weight or load slip for each load of material used in the construction of the asphalt concrete pavement.

C. Concrete Paving: The Contractor shall furnish mill test reports on the cement, reinforcement bars, and aggregates, showing compliance with the respective specifications. The Testing Engineer may make concrete test cylinders and slump tests as deemed necessary to determine compliance with the Specifications.

D. Liquid Asphalt.E. Paint.

F. Aggregate Base.

1.4 PROJECT CONDITIONS

A. Prior to placing asphalt concrete, or base fill material:

1. Verify that all underground utilities and drainage systems have been installed and backfilled.

B. Liquid Asphalt and Asphalt Emulsion:

1. Prime coat, seal coat, and paint binder shall be applied only when the ambient temperature is above 50 F and when temperature has not been below 35 F for 12 hours immediately prior to application.

2. Prime coat, fog coat, seal coat, and paint binder shall not be applied when base or surfaces are wet or contain excess moisture.

C. Asphalt Concrete Paving: Asphalt concrete surfaces shall be constructed only when ambient temperature is above 50 F and when base is dry.

1.5 GENERAL DESIGN CRITERIA

A. Services Areas: Approach ramps, driveways, and paved work areas in excess of 4% slope shall be provided with a rough texture for non-skid surface.

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B. Walks and Paths: Asphalt Concrete & Concrete exterior slabs (walks, terraces, etc.) shall be ADA compliant unless otherwise noted on the plans.

2.0 PRODUCTS

2.1 PAVING MATERIALS

A. Aggregate Base: Aggregate base shall conform to Caltrans Class 2 (R value 78 min) aggregate base, 3/4" maximum size, as specified in Section 26 of the C.D.T. Standard Specifications.

B. Asphalt Concrete Paving:

1. Paving asphalt to be mixed with aggregate shall be steam-refined asphalt, AR-4000, conforming to Section 92 of the C.D.T. Standard Specifications.

2. Mineral aggregate shall be Type B mineral aggregate as specified in Section 39 of the C.D.T. Standard Specifications.Maximum aggregate size shall be as follows:A.C. Thickness Max. Ag.

a. surface course 3/8"

b. base course 3/4"

Liquid asphalt for prime coat shall be Grade SC-70 in conformance with Section 93 of the C.D.T. Standard Specifications.

Asphaltic emulsion for paint binder, fog coat, and seal coat shall be emulsified asphalt, Type SS-1h, conforming to Section 94 of the C.D.T. Standard Specifications.

C. Seal Coat: Caltrans Section 37-1, Fog Type using SS1 asphaltic emulsion.

D. Soil Sterilant: As specified in Section 31 20 00, “Earth Moving”.

2.2 SOURCE QUALITY CONTROL

A. Provide mix design for asphalt in accordance with C.D.T Section 39.

B. Submit proposed asphalt mix design prior to commencement of work.

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C. Asphalt Concrete Test Report and Certification.

1. Provide certified copies of the test report at the time of delivery of each shipment of asphalt.

2. The test report shall indicate:Name of the vendor.Type and grade of asphalt delivered.Date and point of delivery.Quantity delivered.Delivery ticket number.Purchase order number.Results of the specified tests.

3. Provide certified test report that the product delivered conforms to the Specifications for the type and grade indicated.

4. The certified test reports and the testing required in connection with the reports shall be at no additional cost to the owner.

5. Final acceptance will be dependent upon the determination by the Client’s Representative that the material involved fulfills the prescribed requirements.

D. Certificates: Provide the Client’s Representative with a material certificate signed by the material producer and the Contractor, certifying that each material item complies with, or exceeds specified requirements.

E. Obtain materials from same source throughout duration of Project.

3.0 EXECUTION

3.1 EXAMINATION

A. Examine areas to receive asphalt concrete and verify the following.

1. Related work as drainage structures, grates, frames, curbs, headers, and adjacent paving have been set at proper elevations or that conditions will permit adjustments to proper elevations.

2. Receiving surfaces are not wet.

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3. Other conditions that adversely affect execution of this work.

B. Do not start work until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Subgrade and Aggregate Base:

1. The top 8 inches of subgrade shall scarified and compacted to 90% percent based on ASTM D1557 laboratory Compaction Test Procedure.

2. Aggregate base shall be compacted to 90 percent ASTM D1557. Sections 26-1.04B and 26-1.05 of the C.D.T. Standard Specifications shall apply.

3. Soil sterilant shall be applied to prepared subgrade or after installation of rock or aggregate base uniformly at the rate recommended by the manufacturer.

4. Ensure receiving areas are true to line and grade, dry, firm, properly prepared, and free from loose or foreign materials.

5. Do not proceed until subgrade has been inspected and approved by the Client’s Representative. Notify Client’s Representative 48 hours in advance of performing paving work.

B. Crack Sealing:

1. Before sealing, cracks shall be cleared of dirt, dust, and all other deleterious materials to a depth of 1/4" to 1/2".

2. Cracks 1/8" in width and greater shall be sealed.

3. Application of crack sealer shall be in accordance with the manufacturer's recommendations unless otherwise directed.

3.3 ASPHALT CONCRETE PAVING INSTALLATION

A. Aggregate Base: Asphalt concrete shall be proportioned, mixed, placed, spread and compacted in accordance with Caltrans Section 26, to thickness, lines, and grades noted on Drawings.

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B. Prime Coat: Before placing Asphalt concrete on untreated base, a liquid asphalt prime cast shall be applied at rate of 0.25 gallons per square yard to entire area in accordance with Caltrans Section 39-4.02.

C. Prime Coat: Supply at rate of 0.05 to 0.10 gallon per square yard to all vertical surfaces of curbs, gutters, and construction joint in surfacing against which additional material is to be placed in accordance with Caltrans Section 39-4.02.

D. Asphalt Concrete:

1. Proportion, mix, place, spread and compact asphalt concrete in layers in conformance with Section 39 of the Caltrans Standard Specifications.

2. Use a minimum of 8-ton self-propelled rollers.

3. No layer of asphalt concrete shall be less than 1 inch, or 3 times the maximum aggregate size in compacted thickness or shall the layer exceed the maximum thickness allowed in Section 39.

4. Provide smooth side and water-resistant surface, true within tolerances specified, and free of bird baths.

5. Bring asphalt concrete to edges or concrete curbs, gutters, adjacent paving, and header boards; do not overlap these items.

6. Roll surfaces longitudinally; cross-rolling will be required where space permits.

E. Existing Asphalt Concrete Paving:

1. Repair damage caused by construction operations and restore to condition prior to construction.

2. Restoration may be accomplished by patching defects, resurfacing, completely replacing, or combination of these measures, but measure taken shall be adequate for work of restoration required and is subject to the Client’s Representative’s prior approval.

F. Seal Coat: Apply fog seal coat, and when indicated in the Drawings, a slurry seal, in accordance with Caltrans Section 37 to all new asphalt concrete paving.

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1. Adjoining surfaces and areas, including curb faces.

a. Take all other necessary precautions as required to prevent over-spray and splatter of the seal coat material on the adjacent surfaces or areas.

b. In the event the precautions taken are not adequate, clean all traces of over-spray and splatter from surfaces.

2. After fog seal has been applied, allow ample time for drying before traffic is permitted on the pavement on the pavement or paint striping is applied.

G. Bituminous concrete shall show no evidence of cracking, uneven settlement or improper drainage. All correct work will display such conditions under the Contractor’s warranty.

3.4 PAVEMENT MARKING

A. General:

1. New surfaces shall have traffic paint applied in two applications. First or priming coats shall be in light application to seal the pavement. Second heavier coat of paint is the wearing surface and the rates of application are shown on Table 1. Restriping may be in one application.

2. Surfaces to be painted shall be clean and dry prior to painting. Ample time shall be allowed between the asphalt pavement seal coat and the initial painting application. Usually, the drying time of the seal coat is approximately three to four days, depending upon weather conditions. There shall be a minimum drying time between paint applications of approximately 20 minutes.

TABLE 1SOLID STRIPESNew Surfaces (first coat) 12 - 14 gallons per mile or one gallon per

125 - 150 s.f. of line

Second Coat or Re-striping 16 - 18 gallons per mile or one gallon per 100 - 110 s.f. of line

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BLACK TRAFFIC PAINT One gallon per 220 s.f. of line (Quantity pertains to black line painted between parallel solid yellow line- not for painting out existing striping).

PAVEMENT MARKINGSNew surface (first coat) Approximately 1 gallon per 200 s.f. of area.Second coat or restriping 1 gallon per 100 s.f. of area


A. General: Test in-place asphalt concrete courses for compliance with requirements for thickness and surface smoothness. Repair or remove and replace unacceptable paving as directed by Engineer.

1. Finished surface must conform to maximum gradient slope or less grades called out must be maintained.

B. Aggregate Base: The surface of finished aggregate base shall vary by no more than 0.05 feet above or below the grade established as shown on the plans.

C. Asphalt Concrete Paving:

1. The finished asphalt pavement, where not controlled by adjacent structures or features, shall not vary more than 0.05 feet above or below the planned grade, providing it is uniform and free of sharp breaks.

2. The cross section of the finished pavement shall be free of ridges and valleys and shall not vary more than 0.03 feet above or below the theoretical section at any point on the cross section.

3. The specified thickness of the finished pavement shall be the minimum acceptable.

4. Conforms shall form a smooth, pond-free transition between existing and new pavement.

D. Depressions in paving between high spots are not to exceed 1/8" when measured below a 10' long straight edged placed anywhere on surface in any direction.

3.6 PROTECTION

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A. Permit no traffic until surface of paving has cooled sufficiently to prevent damage.

B. Erect barricades if required to protect paving from traffic.

3.7 CLEANUP

A. General:

1. Surplus material remaining upon completion of paving operations shall become the property of the Contractor, to be removed from the work site and disposed of in a lawful manner.

2. Surfaces shall be left in a clean, neat, and workmanlike condition, and all construction waste, rubbish, and debris shall be removed from the work site and disposed of in a lawful manner.

END OF SECTION

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SECTION 328000 – IRRIGATION – For Reference Only

1.0 GENERAL

1.1 SUMMARY

A. This Section includes all labor, materials, equipment, operations, or methods listed, mentioned or scheduled on the plans and/or herein specified, including all incidentals necessary and required for completion of work under this Section.

B. Provide and install all irrigation work as shown on project Drawings, including all connections, irrigation lines, sleeves and equipment, backflow preventer enclosure, moisture sensors and clock timers necessary for a complete irrigation system.

1. Work under this Section shall include all fees, permits, licenses, and required inspections by concerned governing agencies.

C. Coordinate existing system on San Antonio campus with new SCCOE Headstart system and pad.

1. Existing Conditions:

a. The Contractor shall visit the subject site to review the various existing conditions. A condition found to deviate from the Plans and Specifications shall be reported to the County’s Authorized Representative prior to submitting his bid proposal.

b. A static water pressure test shall be taken at the points of connection by the Contractor. Should the pressure fall below 40 psi or above 60 psi, the County’s Authorized Representative shall be notified prior to start of work.

c. Contractor shall install temporary connections to existing irrigation lines in coordination with County’s representative.



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B. Division 31 – Earthwork

C. Section 329000, Planting: Landscape

1.3 SUBMITTALS

A. Comply with provisions of Section 013300, Submittal Procedures.B. Materials Lists: Complete lists of materials proposed for installation.

1. List all materials by manufacturer's name and model number.

2. Only approved materials and items of equipment shall be used.

3. Any proposed substitutions, together with descriptive material, shall be submitted to the Architect.

4. Prior to the final acceptance of the irrigation system, the Contractor shall furnish three (3) individually bound Service Manuals to the Architect for use by the County.

5. The manuals shall contain complete exploded drawings, diagrams, and spare-parts lists of all equipment installed showing components and catalog numbers together with the manufacturer's name and address.

6. In addition, each Service Manual shall contain the following:

a. Index sheet indicating the Contractor's name, address, and phone number.

b. Copies of equipment warranties and certificates.

c. List of equipment with names, addresses, and telephone numbers of all local manufacturer's representatives.

d. Complete operating and maintenance instructions in sufficient detail to permit operating personnel to understand, operate, and maintain all equipment.


A. Standards, Specifications, and Codes:

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1. All work shall be in full accordance with the latest rules and regulations of the Safety Orders of the Division of Industrial Safety, the Uniform Plumbing Code, and other applicable state or local codes or regulations in effect at the time of the project. Nothing on the Drawings or in the Specifications is to be construed to permit work not conforming to these codes, rules, and regulations.

2. When the Specifications call for materials or construction of a better quality or larger size than required by the above rules and regulations, the provisions of these Specifications shall take precedence over the requirements of said rules and regulations.

3. The Contractor shall furnish, without extra charge, any additional material and/or labor when required by compliance with the above rules and regulations though the work be not mentioned in these particular Specifications or shown on the Drawings.

B. Wherever the term, “as per manufacturer's specifications and/or instructions,” is used, it shall mean in strict accordance with the manufacturer's printed directions. If these directions conflict with this Specification, the matter shall be brought to the attention of the Architect and his instructions obtained before proceeding with the work.

C. The use of a manufacturer's name and model or catalog number is for the purpose of establishing the standard of quality, general configuration desired, and, in the case of sprinkler heads, distribution of water only.

D. All materials throughout the systems shall be new and in perfect condition.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver all materials in timely manner to ensure uninterrupted progress of the work; store in such a manner as will preclude damage thereto and permit ready access for inspection and identification of each shipment.

B. Manufactured materials shall be delivered in original containers with brand and maker's names marked thereon.

2.0 PRODUCTS

2.1 MATERIALS

A. Pipe:

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1. Plastic: Polyvinyl Chloride (PVC), Type 1120-1220, ASTM D1785.

a. Class and/or Schedules as specified on the Drawings.

b. All pipe shall be free of blisters, internal striations, or any other defects or imperfections.

c. Pipe shall be continuously and permanently marked with manufacturer's name; material type, size, schedule, or class; and quality-control identifications.

B. Pipe Fittings:

1. Plastic: Polyvinyl Chloride (PVC) Type 1; ASTM D2466. Solvent weld as specified on the Drawings.

2. Steel Pipe: Steel fittings shall be Schedule 40, hot-dipped, double-banded, malleable, galvanized, standard thread type.

C. Remote-Control Wire: Solid Copper, 600-volt AC, Type UF-AWG, UL approved for direct burial.

1. Wire shall be continuously and permanently marked with manufacturer's name, wire size, and identification.

2. Color of Control Wires shall be as follows:

a. Pilot Wires: #14 black.

b. Common Wire: #12 white.

D. Automatic Controller:

1. Irritrol MC-8 Plus

E. Backflow Preventer Enclosure Unit:

1. Reduced Pressure Backflow Preventer: FEBCO 825Y

a. Finish shall have two coats of enamel. Color shall be selected by Architect.

2. Enclosure: single-swing type manufactured by Lemeur.

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a. Frame shall be 1-1/2" x 1-1/2" x 3/16" steel angle with 1-1/2" #9 expanded metal.

3.0 EXECUTION

3.1 INSPECTION

A. Examine substrate in which the work is to be performed.

B. Do not proceed until unsatisfactory conditions have been corrected.

3.2 COORDINATION

A. Schedule and coordinate work with other trades.

1. Install pipe and sleeves under paving and through walls and footings.

2. Do not install heads until walls, curbs, headers, and other related structures are in place.

3. Do not install pipe until planting areas have been scarified under Planting work.

3.3 PREPARATION

A. Verification of Dimensions and Grades:

1. All scaled dimensions are approximate.

2. Before proceeding with any work, carefully check and verify all dimensions on the site.

3. Spacing of headers and locations of valves and quick couplers shall be as indicated on the Drawings and specified herein.

4. Above items shall be staked out and any deviation from Drawings and Specifications shall be reviewed by the Architect prior to installation.

3.4 INSTALLATION

A. Layout:

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1. Lay out work as accurately as possible in accordance with the Drawings.

2. Where site conditions do not permit locating piping, valves, and heads where shown, notify the Architect immediately, and do not proceed until his instructions are obtained.

Do not trench through roots greater than 1" in diameter under existing tree canopies.

3. Run pipe lines in common trenches wherever practical.

4. Notify the Architect of any aspects of layout which will provide incomplete or insufficient water coverage of plant material, and do not proceed until his instructions are obtained.

5. Locate all underground utility lines prior to excavating irrigation, and bring any conflicts to the attention of the Architect.

6. Do not proceed with the work until instructions are received from the Architect.

B. Protection:

1. Protect existing and new work at all times.

2. Any existing buildings, equipment, piping, pipe coverings, sewers, sidewalks, landscaping, etc., damaged by the Contractor during the course of his work shall be replaced or repaired by the Contractor in a manner to return to prior condition, at the Contractor's own expense and before the final payment is made.

3. The Contractor shall be responsible for damage caused by leaks in the piping systems being installed or in having been installed by him. He shall make good any damage so caused at his own expense.

C. Excavating and Trenching:

1. Excavation shall be in all cases ample in size to accommodate bedding material, to permit the pipes to be laid at the elevations intended, and to permit ample space for joining.

2. Make trenches for pipelines deep enough to provide minimum cover from finish grade as follows:

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a. 18-inch minimum cover over mainlines, except under paving where it shall be 24" inches with sand backfill.

b. 12-inch cover over head lateral lines, except under paving where it shall be 24" inches with sand backfill.

3. Trenches shall be straight with bottoms at uniform slopes.

4. Underground lines shall have a minimum horizontal clearance of 2 inches from each other.

a. All lines shall have a minimum horizontal clearance of 12 inches from the lines of other trades. (This requirement does not apply to any lines crossing at angles from 45 to 90 degrees with each other).

b. A minimum 1-inch vertical clearance shall be maintained between lines which cross between these angles.

5. No line shall be installed parallel to and directly over another line.

6. Restore surfaces, existing underground installation, etc., damaged or cut as result of excavations, to original conditions.

7. Where irrigation lines interfere with other utilities, irrigation, trenching, and pipe work, adjust the trench depth as directed by the Architect.

D. Assembling Pipelines:

1. All pipe shall be assembled free from dirt and pipe scale. Field-cut ends shall be reamed to remove rough edges and burrs.

2. Solvent-Weld Joint

a. Prepare joint by first making sure the pipe end is square, then deburring pipe end and cleaning pipe and fitting of dirt, dust, and moisture.

b. Dry insert pipe into fitting to check for missizing; pipe should enter fitting one-third to one-half the depth of socket.

c. Solvent Cement and Primer: Make and type approved by manufacturer(s) of pipe and fittings; cement shall be maintained at proper consistency throughout use.

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d. Coat the inside socket surface of fitting and external surface of male end of pipe with primer.

e. Then, without delay, apply cement liberally to male end of pipe and also apply cement lightly to inside of socket.

f. At this time apply a second coat of cement to the pipe end.

g. Insert pipe immediately into fitting and turn one-quarter turn to distribute cement and remove air bubbles. Pipe must seat to bottom of socket and fitting. Check alignment of fitting. Pipe and fittings shall be aligned properly, without strain to either

3. Hold joint still for approximately 30 minutes before handling and at least 6 hours before allowing water in pipe.

E. Thrust Blocks: Not Applicable

F. Threaded Joints for Plastic Pipe:

1. Field threading of plastic pipe or fittings is not permitted; factory-formed threads only will be permitted.

2. Where assembling to threaded plastic fitting, take up joint no more than one full turn beyond hand tight.

3. Use strap-type friction wrench only; do not use metal-jawed wrench.

G. Threaded Joints for Galvanized Steel Pipe - Not Applicable

H. Laying Pipe:

1. Bed in at least 2 inches of finely divided material with no rocks or clods over 1 inch in diameter to provide a firm uniform bearing.

2. PVC pipe shall be snaked from side to side of trench bottom to allow for expansion and contraction. One additional foot per 100 feet of pipe of the minimum allowance for snaking.

3. Do not lay pipe where there is water in trench or when temperature is 32 degrees F. or lower.

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4. Cap or plug openings as pipeline is assembled to prevent entrance of dirt or obstruction. Remove caps or plugs only when necessary to continue assembly.

5. Where pipes pass through sleeves, provide removable nondecaying plug at ends of sleeve to prevent entrance of earth.

I. Remote Control Valves:

1. Remote Control Valves to be of same Manufacturer or be compatible, as shown on Drawings.

2. Install where shown and group together where practicable; limit one RCV per valve box.

3. Locate valves no closer than 12 inches from walk edges, buildings, and walls.

4. Thoroughly flush mainline before installing valve.

5. Place all control valves in valve box.

a. Use Extensions as necessary to keep soil away from valves and solenoids.

b. No soil shall be allowed around valve.

c. Fill in area below valve with pea gravel.

d. Attach a 2-inch-diameter aluminum identification tag with valve numbers stamped on it to each valve; secure with wire.

J. Automatic Control Wiring:

1. Run lines along main wherever practicable.

2. Tie wires in bundles with pipe-wrapping tape at 10-foot intervals, and allow slack for contraction between strapping.

3. Loop minimum of 2 (two) feet of extra wire in each valve box; both control wire and ground wire.

4. Connections shall be made with twist-type (wire nut) connectors and sealed with epoxyresin sealer packs.

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5. Splicing will be permitted only on runs exceeding 2,500 feet. Locate all splices at valve locations.

6. Each control valve shall be connected to its respective controller with its own individual control wire. Common ground wire shall be common to only those valves controlled by each individual controller.

K. Flushing Lines:

1. Flush all rock, sand, and debris from the lines.

2. Flush mainlines prior to installing valves and connecting lateral lines.

3. Flush long dead-end runs prior to capping pipe.

4. Flush lateral lines prior to installing heads.

5. Continue flushing process with water running slowly as heads are installed, starting closest to valve and working outward.

L. Testing Pipe:

1. Pipe shall be center loaded with sufficient backfill in accordance with the paragraph on backfilling to anchor pipe before testing.

2. No fittings shall be covered during testing.

3. No testing shall be done until the last solvent welded joint has had twenty-four (24) hours to set and cure.

4. Install control valves prior to testing.

5. Notify the Architect at least three (3) days in advance of testing.

6. Tests will be observed and approved by the Architect.

7. Perform testing and furnish all equipment for testing of work of this Section.

8. Apply the following tests after solvent-weld plastic pipe joints have cured at least 24 hours.

a. Test mainlines hydrostatically at 125 psi minimum. Lines will be approved if test pressure is maintained for 24 hours.

b. Test lateral lines with water at line pressure, and visually inspect for leaks.

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c. The Contractor shall make tests and repairs as necessary until test conditions are met.

d. Retest after correcting defects.

M. Backfilling Pipe:

1. Do not backfill until pipe has been tested and approved by the Architect.

2. Backfill materials shall be like material excavated.

a. Backfill to depth of 6 inches above top of pipe shall be finely divided material free of rocks or clods over 2 inches in diameter.

b. Remaining backfill shall be free of rocks and clods over 2 inches in diameter.

c. Place backfill in 6-inch lifts, and compact by tamping as follows:Planting Areas: Percentage equal to adjacent soil.Under Paving: Percentage to that specified for the paving subgrade and base material.

N. Backflow Preventer:

1. Gate valves and test cocks are required.

2. No connections or tees are allowed between the water meter and backflow unit for the water supply.

3. Protection from freeze damage may be required in exposed areas.

4. Unit must be accessible for testing and maintenance. Prior to unit activation, call Public Works for backflow device inspection.

5. Wrap buried galvanized pipe with 3M tape or approved equal.

O. Coverage Test:

1. When the irrigation system has been completed, a coverage test shall be performed in the presence of the Architect to determine if coverage of water afforded planting areas is complete.

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2. Make minor changes in heads and head location to provide adequate coverage at no additional cost to the County.

P. System Tests:

1. Prior to final acceptance, the irrigation system shall be tested and inspected for correctness of coverage in the presence of the Architect. All inadequate coverage will be corrected before final acceptance.

Q. As-Builts:

1. Provide and keep up to date a complete “Record” set of blueline prints, which shall be corrected daily, and show every change from the original Drawings and Specifications as well as dimensioned locations of pipe and equipment.

2. This set of Drawings shall show dimensions of all mainlines and gate valves from the nearest structure.“Record” Drawings shall show dimensions of all mainlines and gate valves from the nearest structure.

3. These Drawings shall also serve as work progress sheets, and neat and legible annotations shall be made daily as the work proceeds, showing the work as actually installed.

R. Wrenches, Keys, and Couplers:

Provide the County at completion of the planting maintenance period with three each of all operating and servicing keys and wrenches required for complete maintenance and operation of all valves. Include all wrenches necessary for complete disassembly of all valves.

3.5 WARRANTY

A. Repair of Damage: All damage to paving, planting, structures, and other improvements due to settlement of improperly compacted trench backfill shall be promptly repaired to the satisfaction of the County's Representative and without additional expense to the County.

B. All materials and workmanship shall be as specified and shall for minimum period of one (1) year.

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C. At the end of this period all required repairs and adjustments, including adjustment to grade shall be made including all repairs to other work made necessary thereby, without additional expense to the County.

D. Present to the Architect at time of final acceptance, warranties for all materials used.

END OF SECTION

SECTION 329000 - PLANTING: LANDSCAPE WORK - For Reference Only

1.0 GENERAL

1.1 SUMMARY

NOTE: Work is to be performed on an SCCOE site. A meeting should occur before work is started to coordinate work including work not limited to trees, shrubs and sodding of all damaged turf within the fencing confines of the project.

A. This Section includes all labor, materials, equipment, operations, or methods listed, mentioned, or scheduled on the plans and/or herein specified, including all incidentals necessary and required for completion of work under this Section.

B. Provide and install all landscaping as shown on project Drawings and as specified herein, including all planting and maintenance under a sixty (60) calendar-day maintenance period (see part 3.8 of this Section).



B. Division 31 – Earthwork

C. Section 328000, Irrigation

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1.3 GENERAL CONDITIONS

A. The contractor shall maintain adequate protection of his work from damage and shall protect the County's and adjacent property and related appurtenances from injury or loss arising from this Contract. Damaged or disturbed items shall be replaced with equal by the Contractor at no cost to the County.

B. The Contractor shall pay Federal, State, and Local Sales and/or Use Taxes to materials, processes, or devices purchased or used in connection with the work. Local, Municipal, and State Laws and Rules and Regulations governing or relating to any portion of this work are hereby incorporated into these Specifications.

1.4 PERMITS, LICENSES, AND INSPECTIONS

A. Any permit, license and/or inspection required by the legal authorities or agencies having jurisdiction over the construction or installation of the work as shown on the Plans or specified herein, shall be paid and obtained by the Contractor at the proper time.

1.5 BONDS AND INSURANCES

A. The Contractor shall furnish the appropriate bond(s) in the amount of the required per cent of his bid proposal and carry insurance as required by the County. The Contractor shall be informed of these requirements from the County prior to submitting his bid proposal.

1.6 EXISTING CONDITIONSA. The Contractor shall visit the subject site to review the various existing

conditions. A condition found to deviate from the Plans and Specifications shall be reported to the County's Authorized Representative prior to submitting his bid proposal.

1.7 PURPOSE OF DOCUMENTS

A. The intent of the documents is to include, unless otherwise stated, the labor, materials, equipment, appliances, and transportation for the proper execution of the work as required for complete construction as shown on the Plans and specified herein. The Contractor shall be responsible for complete layout of improvements as shown on the Plans and as specified herein. Written dimensions shall take precedence over scaled dimensions. Follow as closely as practical making no alterations unless prior review and appropriate action is taken by the County's Authorized Representative.

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B. Each plant shall be installed in locations as shown on the Plans. Plants improperly located shall be relocated at no additional cost to the County. Notwithstanding is the fact that these documents may be deficient in setting forth a complete detailed description of the work to be done.

1.8 RECORD DRAWINGS

A. On one set of the Plans, the Contractor shall record accurately changes in the work which constitute departures from the original Contract Drawings. The Contractor shall dimension from two permanent points of reference (building corners, sidewalks, or road intersections, etc.) the location of the following items:

1. Connections to existing water lines

2. Routing of pressure supply lines

3. Sprinkler control valves

B. Upon completion of each increment of work, the Contractor shall transfer information including the dimensions to a clean set of Ozalid prints of the Plans and the changes. The dimensions and changes shall be recorded in a legible and workmanlike manner to the satisfaction of the County's Authorized Representative. Prior to stage acceptance, these Plans shall be presented to the County's Authorized Representative for review.

2.0 PRODUCTS

2.1 MATERIALS

A. Plant Material:

a. Plants and planting material shall meet the specifications of Federal, State, and County laws requiring inspection for plant disease and insect control. Inspection certificates required by law shall accompany shipments, of which a copy of each inspection certificate shall be given to the County.

b. Plants shall be true to botanical name and one of each bundle or lot shall be tagged with the botanical name and container size of the plants in

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accordance with the standards of practice recommended by the American Association of Nurserymen.

c. Plants shall be healthy, vigorous stock, free of insects and disease, and not root-bound. Quality and size shall conform with the current edition of “Horticultural Standards” for number one grade nursery stock as adopted by the American Association of Nurserymen. Plants which are not true to botanical name shall be removed from the site and replaced with acceptable plants at no extra cost to the County. Botanical names shall take precedence over common names.

d. Due to ever changing availability of plant material, the Contractor may submit plant type substitution requests to the County's Authorized Representative for review, prior to ordering.

B. Sod Material:

1. Grower: Grass Farm, Morgan Hill, CA (1-800 529-6763), or approved equal.

2. Material: Double Dwarf Champion

3.0 EXECUTION

3.1 PREPARATION

A. Finish Grading:

1. Planting areas shall be graded to the elevations indicated on the site plan. Grades not otherwise indicated shall be uniform levels or slopes between points where elevations are given. Minor adjustments of finish grades shall be made at the direction of the County's Authorized Representative, if required, at no additional cost to the County.

2. Finish grade shall be smooth, even, and of a uniform plane with no abrupt changes of surface. Soil area adjacent to buildings shall slope away from the buildings to allow a natural runoff of water, and surface drainage shall be directed as indicated on the drawings by remodeling surfaces to facilitate the natural runoff of water. Low spots and pockets shall be graded to drain properly.

B. Soil Preparation:

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1. Prior to planting, Contractor shall obtain soils test from certified soil testing lab and send copy to Architect. Commercial fertilizer shall be as per recommendations of soils lab. It shall be delivered to the site in bags labeled with manufacturer's guaranteed analysis. If stored at the site, fertilizer shall be protected from the elements prior to use.

2. Organic Soil Amendment (OSA): Shall be nitrogenized fine grained Redwood sawdust, or approved equal. The Contractor shall submit samples to the Architect for review prior to ordering of material. Particle size, mix proportions, Ph, and salinity content shall conform to manufacturer's literature.

3. Using a rotary-cultivator, thoroughly till three inches of OSA a minimum of two passes of all planting areas six inches deep in two directions 90 degrees to each other. Rake entire area to remove clods and stones over one inch in diameter, and sticks, etc. Maintain adequate distance from mud sills in accordance with local codes

.3.2 SOD INSTALLATION

A. Preparation:

1. Remove dead and decaying vegetation, sticks, stones and debris over 1/2" in diameter. Dispose of off site at the time of removal.

2. Rototill the soil to a minimum depth of 8 inches.

3. Apply soil amendments evenly over area to be sodded and thoroughly incorporate into the soil to a depth of 6 inches (amendments specified as per soils analysis).

a. Amount per 1000 sq. ft.:3 cubic yards nitrogen stabilized organic amendment.15 lbs. Ironite 92% iron, 1-0-0.

4. Trench for irrigation system; refer to Section 328000, Irrigation.

5. Compact soil with a roller to achieve 85% compaction.

6. Fine grade area to achieve a smooth continuous finish grade, fill all low spots and undulations.

B. Sod Installation:

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1. Apply pre-plant fertilizer, per the soil testing recommendation, to prepared soil bed.

2. Lay sod uniformly and with tight seams between rolls. Do not overlap or leave gaps. Bevel root mat of rolls where they join.

3. In hot weather above 85 degrees, water lightly after each 200 sq. ft. installed.

4. Once sod is installed, water lightly, then roll sod to bring turf into close contact with prepared soil.

5. Immediately after sod installation, water to a depth of 6". For the next 6-10 days keep the sod moist (not flooded) at all times.

C. Mow:

1. First mow at height of greater than 2" less than 3".

2. For all subsequent mowings, the mower should be set at 1-1/2".

3.3 SOD MAINTENANCE

A. General: After areas have been prepared, no heavy objects (except rollers) shall be taken over the area at any time. In the event that heavy equipment does compact the soil, the Contractor shall be required to cultivate any areas thus compacted at his/her own expense.

B. Sod shall be watered, edged and mowed as required to assure a neat appearance and a healthy and vigorous growth from the day of installation to the end of the maintenance period.

C. Maintenance shall be for a period of 3 months or until the County finds the sod acceptable.

3.7 WEED CONTROL

A. Shrub and/or ground cover areas shall be weed-free with acceptable pre-emergent herbicide.

B. Prior to laying down of mulch, a letter stating that the work has been completed shall be signed and verified by the Architect and delivered by the Contractor to the County.

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3.8 CLEAN-UP

A. After planting and irrigation operations have been completed, the Contractor shall remove trash, empty plant containers, and tools and equipment used in this work, or any other debris accumulated by the work, as specified herein, from the site of the work.

B. Scars, ruts, or other marks in the area caused by this work shall be repaired at the Contractor's expense, and the ground left in a neat and orderly condition throughout the site or work at no additional cost to the County. All hardsurface paved areas shall be thoroughly cleaned.

3.9 FIELD OBSERVATIONS AND ACCEPTANCE

A. The County's Authorized Representative shall perform at least two project field observations upon completion of each phase of the work. Field observations shall be arranged by the Contractor by notification to the County's Authorized Representative two days prior to field observation date.

1. The first field observation shall take place upon completion of the designated maintenance period. Discrepancies noted by the County's Authorized Representative must be corrected and written notice of completion of remedial work delivered to the County prior to the next field observation.

2. The second field observation will take place upon completion of all remedial work. If the job is satisfactory and to the best of the County's Authorized Representative's knowledge, information, and belief, that the work is carried out in general conformance with the Plans, Specifications, and Contract, and general design intent, a written notice of final review shall be prepared by the County's Authorized Representative and submitted for stage approval to the County, prior to termination of the maintenance period and stage acceptance. The County shall issue stage acceptance to the Contractor.

B. If the job is NOT satisfactory, the Contractor shall continue the maintenance period at no cost to the County until stage acceptance by the County has been issued.

C. Irrigation:

1. Field observation of final pressure rating of mainline testing and observation of pressurized lateral line tests.

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2. Field observation of irrigation coverage test.

3. Field observation of overall irrigation system operation and compliance with the plans and installation procedures as specified herein.

D. Planting:

1. Field observation of final finish grading to review drainage and general appearance before planting.

3.4 MAINTENANCE

A. It shall be the sole responsibility of the Contractor to maintain grades, planting, and irrigation as specified herein through stage acceptance by the County and review by the County's Authorized Representative. Maintenance shall include responsibility for losses due to neglect or vandalism, and continue for a full 60 calendar days initiating after the job is fully completed and written notice of start of maintenance is received from the County.

B. Finish grade shall be maintained to facilitate run-off with silt build-up at back of walk and headers removed.

C. Irrigation system to be checked minimum once a week, heads lowered or raised as needed. Leaks, damage, and/or settling shall be repaired immediately.

D. Plantings shall be weeded, fertilized, cultivated, sprayed, and pruned as necessary to produce a healthy plant specimen.

E. Irrigation shall be checked, heads adjusted for coverage and over-spray, no water on buildings, walks, parking areas, etc. Controller shall be labeled to location of valves per Irrigation Plans.

F. Guarantee of planting and irrigation for one calendar year shall commence at the time of stage acceptance by County or Authorized Representative.

3.11 GUARANTEE PERIOD

A. The guarantee period will commence upon issuance of stage acceptance by the County to the Contractor at the termination of the maintenance period.

1. Planting Guarantee

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a. The Contractor will guarantee the planting (as specified herein) for a period of one calendar year. The signing of the Contract for work is considered as the written guarantee to carry out this provision.

b. Plant material which is lost due to improper planting or plant diseases or pests which were present at the time of the start of the guarantee period shall be replaced by the Contractor at no cost to the County.

2. Completion of Guarantee Period and Final Acceptance

a. A final field observation will take place upon completion of the designated guarantee period.

b. Discrepancies noted by the County's Authorized Representative, which are a direct cause of the Contractor's work as shown on the Plans and specified herein, shall be made correct and complete to the satisfaction of the County at no additional cost to the County.

END OF SECTION

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SECTION 331116 - WATER UTILITIES – For Reference Only

1.0 GENERAL

1.1 SUMMARY


1. Water Services.

2. Couplings and Sleeves.

3. Fittings.

4. Gate Valves.

5. Backflow Preventer Assembly.

6. Thrust Blocks.

7. Fire Hydrants.

B. Related Sections:

1. Section 312333: Trenching, Backfilling, and Compacting.

2. Section 312000: Earth Moving. 1.2 REFERENCES

A. American Water Works Association (AWWA):

1. C104: Cement-Mortar Lining for Ductile-Iron and Gray-Iron Pipe and Fittings for Water.

2. C105: Polyethylene Encasement for Gray and Ductile Cast-Iron Piping for Water and Other Liquids.

3. C111: Rubber-Gasket Joints for Ductile-Iron and Gray-Iron Pressure Pipe and Fittings.

4. C115: Flanged Ductile-Iron and Gray-Iron Pipe with Threaded Flanges.

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5. C151: Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or Sand-Lined Molds, for Water and Other Liquids.

6. C153: Ductile Iron Compact Fittings 4" through 12" for Water and Other Liquids.

7. C509: Resilient-Seated Gate Valves, 3" through 12", for Water and Sewage Systems.

8. C600: Installation of Ductile-Iron Water Mains and their Appurtenances.

9. C601: Disinfecting Water Mains.

10. C900: Polyvinyl Chloride (PVC) Pressure Pipe, 4" through 12", for Water.

2.0 PRODUCTS

2.1 WATER SERVICES 2-1/2 INCHES AND SMALLER DIAMETER

A. Domestic Water Service: Pipe shall be annealed (soft) Type “K” copper (cu).

2.2 COUPLINGS AND SLEEVES

A. General: Couplings and sleeves shall be a minimum of 200-psi working pressure-rated unless otherwise noted. Couplings and Sleeves shall be mechanical joint type.

B. For dip and PVC Pipe - 3" thru 12":

1. Unless otherwise noted, couplings and sleeves for DIP and PVC shall be ductile iron conforming to AWWA Cl53, and shall be 350 psi working pressure rated. Couplings, sleeves, and accessories shall be of domestic manufacture; U.S. Pipe TrimTyte, Union Foundry, Tyler; or approved equal.

2. Unless otherwise noted, flanges on all DIP spools shall conform to AWWA C115.

C. For PVC Pipe: 2-1/2" and smaller: PVC pipe 2-1/2" in diameter and smaller shall have Schedule 40, solvent-weld PVC socket couplings.

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D. For Copper Tubing: Couplings for copper tubing shall be Mueller 110 Compression Connection.

2.3 ASSEMBLY BOLTS AND NUTS:

A. Unless otherwise required, above ground flange assembly bolts shall be standard hex-head, cadmium plated machine bolts with American Standard Heavy, hot-pressed, cadmium plated hexagonal nuts. Buried flange nuts and bolts shall be as above except they shall be of Type 304 stainless steel.

2.4 FITTINGS

A. Fittings for pipe sizes 3" thru 12" shall be mechanical joint, AWWA Cl10, 350 psi working pressure-rated, ductile-iron for use with the type of pipe specified. Fittings shall be cement-mortar lined per AWWA C104 and shall be wrapped in a 8-mil. thick polyethelyne film sleeve.

B. Fittings used at intersections of water mains where valves are required shall be cement-lined, flanged fittings. Valves at these locations shall have flange by mechanical joint ends. Flange bolts and nuts at these locations shall be stainless steel.Fittings for PVC pipe 2-1/2" in diameter and smaller shall be Schedule 40 PVC. Fittings shall be solvent-weld socket fittings except where there is a change in pipe material.

2.5 GATE VALVE (GV)

A. Buried gate valves 3" thru 12" shall be 200 psi working pressure, asphalt-varnished, iron body, resilient seat, non-rising stem with square operating nut (turned counterclockwise to open), and "0" ring packing; 4" thru 12" size shall be Mueller A-2370 series, or approved equal, 3" size shall be an approved manufacturer.

B. For above ground gate valves in domestic and fire service systems, including backflow preventer assemblies and other locations with handwheels, see Section 2.10 below.

2.6 TAPPING SLEEVE AND VALVE

A. Tapping sleeves shall be cast iron, 200 psi working pressure; Mueller H-615/H-619; or approved equal. Tapping valves shall be 200 psi working pressure, resilient seat, non-rising stem with square operating nut turned counterclockwise to open, "0" ring packing, with flanged or mechanical joint.

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2.7 WATER VALVE BOX

A. A valve box shall be provided for each buried valve. Water valve boxes shall be pre-cast concrete box with steel or cast iron traffic cover marked "WATER" as detailed on the Plans; Christy Box #G5 with C275 cover or approved equal.

2.8 WATER SERVICES

A. Water Services shall be installed by the Contractor.

2.9 THRUST BLOCKS

A. Thrust blocks shall be constructed of concrete having a cement content of not less than 6 sacks of cement per cubic yard of concrete, and shall be mixed and delivered to the jobsite by an approved ready-mix concrete supplier, unless otherwise approved by the Fire Marshal.

3.0 EXECUTION

3.1 GENERAL

Refer to Section 312333: Trenching, Backfilling and Compacting.

3.2 STRUCTURES AND APPURTENANCES

A. Except as noted herein or on the plans, all water system structures, components, and appurtenances shall be constructed and installed in accordance with the applicable AWWA specifications.

3.3 PIPE INSTALLATION

A. General:

1. All pipe shall be laid true to line and grade.

2. Before any length of pipe is laid, it shall be carefully inspected for defects by the Contractor. No pipe or other material that is cracked or otherwise defective shall be installed.

3. Pipe must be given a solid uniform bearing in the bottom of the trench. Blocking or supporting the pipe on earth mounds will not be permitted.

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4. Whenever it is necessary to use a short length of pipe at a fitting or valve, the minimum length shall be 32 inches. If it is necessary to cut pipe, the cut shall be made with an approved pipe cutter. The use of hammer and chisel for pipe cutting shall not be permitted. There shall be minimum two (2) inches clearance where pipes penetrate foundation walls or concrete walkways.

B. Debris Control:

1. All pipe, valves, and fittings shall be carefully wiped out and cleaned as they are installed. Any earth or rubbish which may have lodged inside during or before laying shall be removed.

2. Every open end of installed pipe shall be capped or plugged with an approved fitting at all times when work is suspended, at the close of the work day, and as directed by the County’s Representative.

3.5 MINIMUM COVER FOR UNDERGROUND LINES

A. Water lines 4 inches and greater diameter: 36" minimum cover.

B. Water lines less than 4 inches diameter:

1. Paved areas: 36" minimum cover.

2. Landscaped and unimproved areas: 24" minimum cover.

3.6 THRUST BLOCKS

A. Thrust block locations may not be shown on the Drawings, but blocks shall be provided for all pressure pipe fittings, changes in pipe alignment/direction, and at all other points where there is a possibility of joint separation under pressure. Provide anchors and supports where necessary for fastening work into place. Make proper provisions for expansion or contraction of pipelines. Thrust blocks shall be placed between solid ground and the pipe or fittings to be anchored as detailed. Thrust blocks shall be as detailed on the Drawings, or where not detailed, in accordance with AWWA C600 and pipe manufacturer's recommendations.

B. Where concrete thrust blocking is not possible due to space limitations or unstable soil conditions, the Contractor shall provide an alternate means of thrust restraint. Acceptable methods include mechanical joint ductile iron retainer glands, restrained mechanical joints, and restrained push-on joints.

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C. Tie rods shall not be used unless tie rod materials, tie rod arrangement, and corrosion protection methods have been specifically submitted and approved by the County’s Representative for the actual field conditions encountered.

D. Backfilling operations at thrust blocks may begin as soon as the concrete has set sufficiently to remain in position and withstand the weight of the earth. Concrete shall not be disturbed or pressure loaded for at least five (5) days after placing unless otherwise permitted by the County.

3.7 HYDROSTATIC PIPELINE TESTING

A. After the pipe has been laid and backfilled it shall be subjected to hydrostatic pressure tests. Tests shall not be conducted until at least 12 hours have elapsed since pipe laying and at least five (5) days have elapsed since placing of concrete thrust blocks. The pipe shall be filled with water which shall remain without external application of pressure for 24 hours before tests are conducted. Tests conducted prior to completion of all permanent thrust restraints shall be considered as for the convenience of the Contractor and shall be repeated after all temporary thrust restraints have been removed and permanent thrust restraints have been completed.

B. Prior to hydrostatic testing, flush pipe system with fresh water until piping is free of dirt and foreign matter.

C. Pressure shall be applied by a pump and measured by a test gage. All necessary apparatus and labor for conducting the pressure and leakage tests shall be furnished by the Contractor.

D. It is the Contractor's responsibility to ensure the release of air from the line during filling, as well as the prevention of collapse due to vacuum when dewatering the line.

E. For pressure test, use a hydrostatic pressure not less than 200 psi. The duration of the test shall not be less than 4 hours. The pressure shall not vary by more than 5 psi for the duration of the test.

F. Leakage Tests:

1. General: Leakage tests may be performed at the same time as pressure tests. Leakage rate shall be measured for at least 4 hours with a certified water meter, or other approved method. If requested, meter certification shall be submitted to the County for approval prior to testing. Leakage

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shall not be measured by a drop in pressure in a test section over a period of time.

2. There shall be no leakage at mechanical couplings and joints, tapping sleeves, saddles, flanged joints, and copper piping. All visible leaks shall be stopped.

3. Push-on joints:

a. Polyvinyl chloride pipe shall be tested for leakage in accordance with the recommendations of the Uni-Bell Plastic Pipe Association as shown in the following table:

TABLE 1Allowable Leakage per 1,000 ft. or 50 joints of PVC pipeline (Gal/Hr)Average Test Pressure in Line - P.S.I.Nominal Pipe Size,

Inches 200 2504 .38 .436 .57 .648 .76 .8510 .961 .0712 1.151 .28

G. Should any section of new pipe fail to pass either test, the Contractor shall, at his own expense, locate and repair the defective pipe and the test shall be repeated.

3.8 DISINFECTION

A. General:

1. Domestic water lines, mains, and branches shall be disinfected by chlorination in accordance with AWWA C601 and as herein specified. Chlorine shall be a 1 percent solution (containing 10,000 parts per million available chlorine) or shall be obtained by use of dry chlorine in tablet form firmly attached to inside top of the pipe.

2. The weight of chlorine or chlorine compound required to make a 1 percent chlorine solution is as follows:

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` AMOUNT OF QUANTITY OF WATERPRODUCT COMPOUND (in gallons)

High-Test Calcium 1 lb. 7.50Hyprochlorite(65-70% Cl)Chlorinated Lime 2 lb. 7.50(32-35% Cl)Liquid Laundry 1 gallon 4.25Bleach (5.25% Cl)Liquid Chlorine 0.62 lb. 7.50(100% available chlorine)

3. The required concentration of chlorine in the pipe is 50 parts per million. This concentration may be attained by adding 5 gallons of the chlorine solution to 1,000 gallons of water.

4. The required concentration of chlorine in the mains may be obtained by the use of HTH tablets as produced by Olin Mathieson in the following quantities:

Number of Tablets Per Length of PipeDIAMETER OF PIPE

LENGTH OF SECTION 4" 6" 8" 10" 12"13' 1 2 2 3 518' 1 2 3 5 620' 1 2 3 5 730' 2 3 5 7 1036' 2 3 5 8 1240' 2 4 6 9 14100' 4 9 15 23 30

B. Liquid Chlorine Solution Method: All foreign matter shall be flushed from mains, branch runs, hydrant runs, and installed services. Liquid chlorine solution shall be introduced at appropriate locations to assure uniform distribution through the facilities at the proper concentration. Installed copper service lines shall not be used to convey the concentrated solution to the mains. The sanitizing solution shall be retained in the facilities for a period of 24 hours after which each service, hydrant run, branch run and dead end shall be flushed until the residual chlorine is less than one part per million or is no greater than the concentration of chlorine in the water supplied for flushing.

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C. HTH Tablet Method: Tablets are to be fastened to the inside top surface of each length of pipe using "Permatex No.1" no earlier than the day pipe is laid. Tablets shall not be installed in the pipe and left overnight before laying and shall not be accessible at any time for casual pilferage by the general public or by children. Tablets shall be stored in a hermetically sealed container. The new facilities are to be slowly filled with water. Air is to be exhausted from each dead end, branch run, hydrant run, and installed service. Water shall be retained for a period of 24 hours, after which each service, hydrant run, branch run and dead end shall be thoroughly flushed to clear foreign matter and until the residual chlorine concentration is less than one part per million or is no greater than the concentration of chlorine in the water supplied for flushing.

D. Bacteriological Testing:

1. Samples shall be gathered and tests conducted at the expense of the County, Samples are to be taken at representative points as required by the County’s Representative.

2. The new facilities shall remain isolated and out of service until satisfactory test results have been obtained which meet the requirement of the California Department of Public Health and until the County has accepted the results as indicative of the bacteriological condition of the facilities. If unsatisfactory or doubtful results are obtained from the initial sampling, the chlorination process shall be repeated until acceptable test results are reported.

END OF SECTION

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SECTION 333000 - SANITARY SEWERAGE UTILITIES – For Reference Only

1.0 GENERAL

1.1 SUMMARY


1. Sanitary Sewer Pipe.

2. Manholes for Sanitary Sewerage.



1.2 REFERENCES


1. C478: Precast Reinforced Concrete Manhole Sections.

2. C700: Vitrified Clay Pipe, Extra Strength, Standard Strength and Perforated.

3. D3034: Type PSM Polyvinyl Chloride (PVC) Sewer Pipe and Fittings.

B. California Department of Transportation (Caltrans): Standard Specifications: Sections 55, 70, 71, and 75.

2.0 PRODUCTS

2.1 POLYVINYL CHLORIDE (PVC) PIPE

A. Polyvinyl chloride (PVC) pipe conforming to ASTM D3034, SDR 26 with bell and spigot-type of rubber-gasketed joints. Bells shall be integral with pipe. Spigot end pipe with separate double hub couplings is not acceptable

B. Pipe and Fittings: PVC pressure pipe conforming to the applicable requirements of AWWA Specifications C900 for class 200 pipe having a dimension ratio (DR) of 14 and a cast iron pipe equivalent outside diameter. Fitting shall conform to

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AWWA Standard C110 cast iron, fittings for two-hundred fifty (250) psi working pressure. Joints shall be rubber gasketed per AWWA C-111.

2.2 VITRIFIED CLAY PIPE (VCP):

A. Vitrified clay pipe and fittings shall conform to ASTM C700, extra strength.

2.3 MANHOLES

A. Manholes shall be pre-cast concrete of the size and shape shown on the drawings and shall conform to Sections 70-1.02H and 71-1.07 of the Caltrans Standard Specifications and to ASTM C478. Equivalent poured-in-place structures may be used at the Contractor's option.

B. Frames and covers shall be cast iron conforming to Section 55-2.03 and 75-1.02 of the Caltrans Standard Specifications. Manhole covers shall have the words "SANITARY SEWER" in letters not less than 2" high cast into the cover. The clear opening for all manhole covers shall be 24".

C. A box shall be provided for each clean-out. Boxes shall be pre-cast concrete box with steel cast iron or reinforced concrete traffic cover marked "San Sewer"; Christy Box G5 or approved equal.

3.0 EXECUTION

3.1 TRENCHING, BACKFILLING, AND COMPACTING

A. Refer to Section 312333, Trenching, Backfilling, and Compacting.


A. Pipe Laying:

1. Pipe laying shall proceed up grade with the spigot section of bell and spigot pipe pointing in the direction of the flow.

2. Each section of pipe shall be laid true to line and grade and in such a manner as to form a close concentric joint with the adjoining pipe and to prevent sudden offsets in the flowline.

B. Debris Control:

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1. The interior of the sewer pipe shall be kept clean of dirt and debris at all times. When work is not in progress, open ends of pipe and fittings shall be plugged.


A. The Contractor shall furnish the necessary labor, equipment, and materials necessary to perform air tests of the completed sewerage project before the system is placed in operation or connected to other lines.

B. In no case shall the Contractor place the newly constructed sewer in operation without approval of the County’s Representative.

3.4 SURFACE RESTORATION:

A. Refer to Section 312000, Earth Moving

3.5 PIPELINE TESTING AND FLUSHING

A. New sections of sanitary sewer shall be air tested using the following procedures:

1. Test is conducted between two (2) consecutive manholes.

2. The test section of the sewer line is plugged at each end. One of the plugs used at the manhole must be tapped and equipped for the air inlet connection for filling the line from the air compressor.

3. Service laterals, stubs and fittings into the sewer test section should be properly capped or plugged and carefully braced against the internal pressure to prevent air leakage by slippage and blowouts. Connect air hose to tapped plug selected for the air inlet. Then connect the other end of the air hose to the portable air control equipment which consists of valves and pressure gauges used to control the air entry rate to the sewer test section, and to monitor the air pressure in the pipe line.

4. More specifically, the air control equipment includes a shut-off valve, pressure regulating valve, pressure reduction valve and a monitoring pressure gauge having a pressure range from 0-5 psi. The gauge shall have minimum divisions of .10 psi and an accuracy of .40 psi.

5. Connect another air hose between the air compressor (or other source of compressed air) and the air control equipment. This completes the test equipment set-up. Test operations may commence.

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6. Supply air to the test section slowly, filling the pipe line until a constant pressure of 3.5 psi is maintained. The air pressure must be regulated to prevent the pressure inside the pipe from exceeding 5.0 psi.

7. When constant pressure of 3.5 psi is reached, throttle the air supply to maintain the internal pressure above 3.0 psi for at least 5 minutes. This time permits the temperature of the entering air to equalize with the temperature of the pipe wall. During this stabilization period it is advisable to check all capped and plugged fittings with a soap solution to detect any leakage at these connections.

8. If leakage is detected at any cap or plug, release the pressure in the line and tighten all leaky caps and plugs. Then start the test operation again by supplying air. When it is necessary to bleed off the air to tighten or repair a faulty plug, a new five-minute interval must be allowed after the pipe line has been refilled.

9. After the stabilization period, adjust the air pressure to 3.5 psi and shut-off or disconnect the air supply. Observe the gage until the air pressure reaches 3.0 psi. At 3.0 psi commence timing with a stop watch which is allowed to run until the line pressure drops to 2.5 psi at which time the stop watch is stopped. The time required, as shown on the stop watch, for a pressure loss of 0.5 psi is used to compute the air loss.

10. If the time, in minutes and seconds, for the air pressure to drop from 3.0 to 2.5 psi is greater than that shown in the following table for the designated pipe size, the section undergoing test shall have passed and shall be presumed to be free of defects. The test may be discontinued at that time.

11 If the time, in minutes and seconds, for the 0.5 psi drop is less than that shown in the following table for the designated pipe size, the section of the pipe shall not have passed the test; therefore, adequate repairs must be made and the line retested.

Requirements for Air TestingPipe sizeTime

(in inches) Min. Sec.4 2 326 3 508 5 6

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10 6 2212 7 3914 8 5615 9 3516 10 1218 11 3420 12 4521 13 30

(For larger diameter pipe use the following: Minimum time in seconds = 462 x pipe diameter in feet).

12. For eight (8) inch and smaller pipe, only: if, during the five-minute saturation period, pressure drops less than 0.5 psi after the initial pressurization and air is not added, the pipe section undergoing test shall have passed.

13. Multi-pipe sizes: when the sewer line undergoing test is 8" or larger diameter pipe and includes 4" or 6" laterals, the figures in the table for uniform sewer main sizes will not give reliable or accurate criteria for the test. Where multi-pipe sizes are to undergo the air test, compute the "average" size in inches which is then multiplied by 38.2 seconds. The results will give the minimum time in seconds acceptable for a pressure drop of 0.5 psi for the "averaged" diameter pipe.

14. Adjustment Required for Groundwater:

a. An air pressure correction is required when the ground water table is above the sewer line being tested. Under this condition, the air test pressure must be increased .433 psi for each foot the ground water level is above the invert of the pipe.

b. Where ground water is encountered or is anticipated to be above the sewer pipe before the air testing will be conducted, the following procedure shall be implemented at the time the sewer main and manholes are constructed.

1) Install a 1/2" diameter pipe nipple (threaded one or both ends, approximately 10" long) through the manhole wall directly on top of one of the sewer pipes entering the manhole with threaded end of nipple extending inside the manhole.

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2) Seal pipe nipple with a threaded 1/2" cap.

3) Immediately before air testing, determine the ground water level by removing the threaded cap from the nipple, blowing air through the pipe nipple to remove any obstructions, and then connecting a clear plastic tube to the pipe nipple.

4) Hold plastic tube vertically permitting water to rise in it to the groundwater level.

5) After water level has stabilized in plastic tube, measure vertical height of water, in feet, above invert of sewer pipe.

6) Determine air pressure correction, which must be added to the 3.0 psi normal starting pressure of test, by dividing the vertical height in feet by 2.31. The result gives the air pressure correction in pounds per square inch to be added.

Example: if the vertical height of water from the sewer invert to the top of the water column measures 11.55 feet, the additional air pressure required would be

(11.55) = 5.0 psi(2.31)

Therefore, the starting pressure of the test would be 3.0 plus 5 or 8.0 psi, and the 1/2 lb. drop becomes 7.5 psi. There is no change in the allowable drop (0.5 psi) or in the time requirements established for the basic air test.

B. After the line has passed the air test, it shall be balled and flushed with water to clean. A metal screen shall be used downstream at the point of connection to the existing system to collect and remove any rock or other debris that is flushed out during cleaning.

END OF SECTION

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SECTION 334100 - STORM DRAINAGE

1.0 GENERAL

1.1 SUMMARY


1. Storm Sewer Pipe.

2. Catch Basins.



2. Section 312000: Earthwork.

1.2 REFERENCES

A. American Association of State Highways and Transportation Officials (AASHTO):

1. M36.

B. American Society for Testing and Materials (ASTM):

1. A74 Cast Iron Soil Pipe and Fittings.

2. A615 Deformed and Plain Billet-Steel Bars for Reinforcement.

3. B32 Solder Metal.

4. C76 Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe.

5. C150 Portland Cement.

6. C478 Precast Reinforced Concrete Manhole Sections.

7. D3034 Type PSM Polyvinyl Chloride (PVC) Sewer Pipe and Fittings.

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8. D2729 Perforated PVC Drain Pipe.

C. California Department of Transportation (Caltrans):

1. Standard Specifications: Sections 51, 52, 55, 66, 70, 71, 72, 75 and 90.2.0 PRODUCTS

2.1 REINFORCED CONCRETE PIPE (RCP)

A. Reinforced concrete pipe shall conform to ASTM C76 with tongue and groove or bell and spigot joints. Unless indicated otherwise on the plans, all reinforced concrete pipe shall be Class III, 1350-D pipe.

2.2 POLYVINYL CHLORIDE (PVC)

A. Polyvinyl chloride pipe and fittings shall conform to ASTM D3034, SDR 35 and SDR 26 with bell and spigot type rubber-gasketed joints.

2.3 CAST IRON PIPE (CIP)

A. Cast iron pipe and fittings shall conform to ASTM C74. Joints shall be rubber-gasketed bell and spigot type.

2.4 MANHOLES AND CATCH BASINS

A. Precast drainage structures shall conform to Sections 70-1.02H and 71-1.07 of the Caltrans Standard Specifications and ASTM C478 and shall be of the size and shape shown on the Drawings. Equivalent poured-in-place structures may be used at Contractor’s option.

B. Frames and covers shall be cast iron conforming to Section 55-2.03 and 75-1.02 of the Caltrans Standard Specifications. Manhole covers shall have 24" clear opening with the words "STORM SEWER" in letters not less than 2" high cast into the cover.

C. Frames and grates for manholes and catch basins shall be match-marked in pairs before delivery to the job site. The grates shall fit into their frames without rocking.

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D. Reinforcing Bars: Reinforcing bars shall be of intermediate grade Billet Steel conforming with ASTM A615 and shall be of the size shown on the Standard Details or on the plans. Bars shall be of the round deformed type, free from injurious seams, flaws, or cracks, and shall be cleaned of all rust, dirt, grease and loose scale.

E. Portland Cement Concrete:

1. Concrete for manhole bases, inlets and other concrete structures shall conform to the requirements of Section 90 of the Standard Specifications and as herein specified. The concrete shall be Class “A” containing six (6) sacks of Portland Cement per cubic yard of concrete. The grading of the combined aggregate shall conform with the requirements of 3/4" maximum. The consistency of the fresh concrete shall be such that the slump does not exceed four (4) inches as determined by Test Method No. Calif. 520. The concrete shall have a minimum design compressive strength of 3,000 psi after 28 days.

3.0 EXECUTION

3.1 TRENCHING, BACKFILLING, AND COMPACTING:

A. Refer to Section 31 23 33: Trenching, Backfilling, and Compacting.


A. General:

1. No pipe shall be laid until the County’s Representative inspects and approves the condition of the bottom of the trench. Pipe laying shall proceed up grade with the spigot section of bell and spigot pipe pointing in the direction of the flow.

2. Split pipe shall be used through a manhole except for changes in pipe grade, size, type or direction.

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3. Each section of pipe shall be laid true to line and grade and in such a manner as to form a close concentric joint with the adjoining pipe and to prevent sudden offsets in the flowline. As the work progresses, the interior of the storm drain shall be cleared of all dirt and debris. Where clearing after laying is difficult because of small pipe size, a suitable swab or squeegee shall be kept in the pipe and pulled forward past every joint immediately after jointing has been completed. Pipe shall not be laid when the condition of the trench or the weather is unsuitable.

B. Debris Control: The interior of the sewer pipe shall be kept clean of dirt and debris at all times. When work is not in progress, open ends of pipe and fittings shall be plugged.

3.3 POURED-IN-PLACE CONCRETE

A. Concrete shall be mixed in accordance with applicable provisions of Section 90 of the Caltrans Standard Specifications.

B. Construction of concrete structures shall conform to applicable provisions of Section 51 of the Caltrans Standard Specifications. Unless otherwise noted herein, exposed surfaces of structure shall be Class 1 surface finish.

C. Curing shall conform to applicable portions in Section 90 of Caltrans Standard Specifications. No pigment shall be used in curing compounds. All work shall be subject to inspection. No concrete shall be placed until the Architect has approved the forms and reinforcement.

D. Concrete shall not be dropped freely where reinforcing bars will cause segregation nor shall it be dropped freely more than six feet. Spouts, elephant trunks or other approved means shall be used to prevent segregation.

3.4 SURFACE RESTORATION

A. Refer to Section 312000, Earthwork.

END OF SECTION

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BID FORMFOR

PAVING WORKFOR


TO: THE SANTA CLARA COUNTY OFFICE OF EDUCATIONPursuant and in compliance with your Instructions and Conditions and all other documents relating thereto, the undersigned offerer, having familiarized himself with the terms of the contract, the local conditions affecting the performance of the contract, the cost of the work at the place where the work is being done, and with the specifications and other contract documents, hereby proposed and agrees to perform within the time stipulated, in contract, including all of its component parts, and everything required to be performed, and to provide and furnish any and all of the labor, materials, tools, expandable equipment, and all utility and transportation services necessary to perform all of the work required in connection with * BID #B9-11-12* all in strict conformity with the specifications and other contract documents, including addenda nos. _____, and _____, on file at the Office of the Purchasing Manager of the Santa Clara County SCCOE.

BASE BIDPaving Work (Sport Court) $_____________

Other Costs – please specify: ________________________ $______________

Base Bid Total: $______________

BID BOND( ) CASHIER’S CHECK ( ) CERTIFIED CHECK ( ) BIDDER’S BOND

made payable to the order of the Santa Clara County Office of Education for the sum of:

Dollars ($ )(In Words) (Figures)

Not less than 10% of the amount of bid

ADDITIONAL WORK Additional costs will be billed at the following unit price rates:

Labor:$________/HR -- __________________ * Labor:$________/HR -- _______________Classification Classification

Labor:$________/HR -- __________________ * Labor:$________/HR -- _______________

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Classification Classification

CONTRACTOR’S LICENSE

Licensed in accordance with the act providing for the registration of the registration of contractor’s,

License No. .

(Expiration Date) (Proper Name of Bidder)

THE REPRESENTATIVES MADE HEREIN ARE MADE UNDER PENALTY OF PERJURY.

NO BID IS VALID UNLESS SUBMITTED ON THIS FORM AND SIGNED BY AUTHORIZED AGENT FOR YOUR COMPANY.

SUBMITTED BY:

FIRM NAME: ACCEPTED BY:

ADDRESS: A. D. Bursch CPMGeneral Services

CITY & ZIP: Santa Clara County SCCOE

TELEPHONE: DATE:

SIGNATURE: (Authorized Agent)

NAME: (Please Print)

TITLE: ______

DATE: ____________________________________

NOTE: If bidder is a corporation, the legal name of the corporation shall be set forth above, together with the signature of authorized officers or agents and the document shall bear the corporate seal; if bidder is a partnership, the true name of the firm shall be set forth above, together with the signature of the partnership; and if bidder is an individual, his signature shall be placed above.

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