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WGHS PE FACILITY ADDENDUM #1

GUILFORD COUNTY SCHOOLS

WESTERN GUILFORD HIGH PHYSICAL ED. FACILITY

ADDENDUM NO. 1 March 23, 2016

TFF Project #14114

NOTICE TO ALL BIDDERS

The following items shall take precedence over the plans and specifications of the above named project and shall become part of the contract documents. Original items of the specifications and information indicated on the drawings not herein modified, amended, voided or suspended shall remain in effect.

Number of Items and Pages included: 16 Items; 2 Pages plus Attachments

Attachments: - Pre-Bid Meeting Summary (dated 3/17/16) [7 pages (including 2-page Sign-In Sheet)]

- Revised Specification Section 00 63 57 (Change Order Request Form) [1 page] - Revised Specification Section 01 21 00 (Allowances) [4 pages] - Revised Specification Section 01 33 00 (Submittals) [6 pages] - New Specification Section 07 55 52 (Modified Bituminous Protected Membrane

Roofing [7 pages] - Revised Specification Section 33 10 00 (Water Utilities) [14 pages] - Revised/New Civil Sheets C-4.00, C-5.00, C-5.01, C-5.02, C-7.02, C-7.03, C-7.04

and C-7.09 (Eight 30”x42” sheets, total [each revision dated 3/21/16]) GENERAL ITEMS: ITEM 1: Pre-Bid Meeting Summary: The Pre-Bid Meeting Summary (dated 3/17/16) is attached and, as such, becomes part of the contract Documents. Please note that this summary also includes an attachment of the two (2) page sign-in sheet from the Pre-Bid Meeting. CLARIFICATIONS: ITEM 2. Fire Alarm System: The Owner has confirmed that the new Physical Education Facility’s fire alarm system shall be a “stand alone” system, as currently indicated on the Electrical drawings (i.e. it will not be required to tie into the existing fire alarm system of the existing building).

ITEM 3. Guilford County Schools Technology Services Master Technology Specifications – Version 7.2: Bidders are advised that all of the work denoted in the Guilford County Schools Technology Services Master Technology Specifications as being by the “Infrastructure Contractor”, “Integrated Communications Contractor”, “Security Contractor” or “Electrical Contractor” is to be included in the Single Prime General Contractor’s scope of work (and, therefore, in the General Contractor’s bid amount). Only items denoted therein as “Owner’s scope” or “Owner-furnished” would be excluded from the General Contractor’s scope/bid amount. PROJECT MANUAL: ITEM 4. Section 00 63 57 (Change Order Request Form): Replace Specification Section 00 63 57 (Change Order Request Form) originally included in the Project Manual with the attached, updated form.

ITEM 5. Section 01 21 00 (Allowances): Replace Specification Section 01 21 00 (Allowances) originally included in the Project Manual with the attached, updated specification section (adding Allowance #s 9-14 and modifying Allowance #s 3 and 4).

ITEM 6. Section 01 33 00 (Submittals): Replace Specification Section 01 33 00 (Submittals) originally included in the Project Manual with the attached, updated specification section.

ITEM 7. Section 07 55 52 (Modified Bituminous Protected Membrane Roofing): Add Specification 07 55 52 (Modified Bituminous Protected Membrane Roofing) to the Project Manual.

WGHS PE FACILITY ADDENDUM #1

ITEM 8. Section 28 31 11 (Fire Alarm System): Revise Paragraph 2.3 (Acceptable Manufacturers), Item A of Specification Section 28 31 11 (Fire Alarm System) to delete the current manufacturers listed and replace them with the following acceptable manufacturers:

1. Fire-Lite 9600 Series Panel and System 2. Simplex 4100 Series Panel and System 3. Silent Knight IFP Series Panel and System

ITEM 9. Section 31 10 00 (Water Utilities): Replace Specification Section 31 10 00 (Water Utilities) originally included in the Project Manual with the attached, updated specification section (which adds Sections 2.13 [Backflow Preventers] and 2.14 [Protective Enclosures], adds Item G to Section 3.14 [Field Quality Control], and adds Section 3.15 [Backflow Preventer Installation]). DRAWINGS: ITEM 10. Cover Sheet – Index of Drawings: Add new Sheets C5.02 (Storm Plan & Profile) and C-7.09 (Details) to the Index of Drawings.

ITEM 11. Sheet C-4.00 – Erosion Control Plan: Revise work within clouded areas of attached revised Sheet C-4.00, generally including notes regarding construction sequence with regards to the connection of new storm to existing storm systems.

ITEM 12. Sheet C-5.00 – Utility Plan: Revise work within clouded areas of attached revised Sheet C-5.00, including modification of Utility Note #12, and revisions within clouded areas generally including addition of Key Note “S” and open cut method of connection in street.

ITEM 13. Sheet C-5.01 – Water Plan & Profile: Refer to attached revised Sheet C-5.01, which was clarified to add dimensions for minimum separation distances, and revised to include City of Greensboro Standard note regarding working around existing utilities.

ITEM 14. Sheet C-5.02 – Storm Plan & Profile: Add new Sheet C-5.02 (Storm Plan & Profile) to the Construction Documents.

ITEM 15. Sheets C-7.02, C-7.03 and C-7.04 – Details: Replace Sheets C-7.02, C-7.03 and C-7.04 with the attached revised sheets, with revisions consisting generally of updated City of Greensboro standard details.

ITEM 16. Sheet C-7.09 - Details: Add new Sheet C-7.09 (Details) to the Construction Documents.

END OF ADDENDUM #1

TFF ARCHITECTS By: _______________________________ Walton R. Teague, FAIA, LEED AP TFF Architects & Planners, LLP

www.tf farchitects .com

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DISCUSSION

I. WELCOME AND INTRODUCTION

A. Welcome WT welcomed all attendees and stated his appreciation to each General Contractor and Subcontractor in

attendance for the time and effort to be put forth in preparing and submitting bids for the project.

B. Introduce Project Team/Consultants WT introduced himself and all representatives of Guilford County Schools (Owner) and the Design Team in

attendance. BC noted members of the Design Team that were not able to attend (Juhann Waller – JC Waller & Associates and Lance Williams – Stewart Engineering).

II. PROJECT OVERVIEW

A. Review of Bid Package WT stated that the project is being bid “Single Prime”. As such, there is only one bid form, which is to be

completed and submitted by bidding General Contractors, appropriately licensed in North Carolina.

Bids will be received until 2 PM on Tuesday, April 12, 2016.

B. Schedule Overview WT briefly reviewed the overall project schedule, reiterating that bids are due on 4/12/16. The Owner intends

to issue the Notice to Proceed on or about 5/16/16. Based on that Notice to Proceed date, Substantial Completion for the new Gym is to be 4/11/2017 and completion of the renovation of the existing Auxiliary Gymnasium will be 7/11/17.

C. Status of Review & Approvals WT stated that the project has been submitted to NC DOI, NC DPI, NC DENR, and the City of Greensboro

Inspections Department for review and approvals. Comments have been received from NC DOI, NC DOI and the City of Greensboro and incorporated into the documents as provided to the bidders. Minimal NCDENR comments will be incorporated into the drawings via addenda. Final approval is pending from the City of Greensboro, due only to the need to provide them with a Statement of Special Inspections identifying the General Contractor. Comments from any Authority Having Jurisdiction (AHJ) received after the bid date (if any) will be coordinated with the successful General Contractor.

III. EXISTING SITE CONDITIONS

A. Existing Conditions. WT stated that the new building’s site is on the existing occupied WGHS campus, in the location of a current

parking/bus drop-off area. The ADA-related work at the athletic fields are across Fuquay Place from the main building. There is also renovation work within the existing school to renovate an existing Auxiliary Gymnasium into a Multi-Purpose room.

Pre-Bid Meeting Summary Date: March 17, 2016

Project: Guilford County Schools Western Guilford High School – Physical Education Facility

Architect’s Project #: 14114

Location: Western Guilford High School

Attending: Guilford County Schools Paul Teasley (BT) Thomas Griffis (TG) Western Guilford High School Pete Kashubara (PK) Chris Causey (CC) TFF Architects & Planners Walt Teague (WT) Brian Carroll (BC) CLH Design Alice Reese (AR) SKA Consulting Engineers Stephen Moorefield (SM) Mike Ranieri (MR) General Contractor /Sub-Contractor Attendees: Pro Construction Chuck Templeton New Atlantic Construction Mark Harrod H.M. Kern Construction Austin Dailey Badger Daylighting Shayne McGlocklin Bar Construction Bruce Guarini S&S Building and Development Mike Stewart Superior Mechanical Andy Fields J. Wayne Poole Construction Joe Poole C2 Contractors, LLC Kevin White

3 3 6 . 2 7 3 . 0 1 0 1 ( P ) 3 3 6 . 2 7 3 . 0 1 4 1 ( F )

For reference, a copy of the Pre-Bid Meeting Sign-In/Attendance List is attached at the end of this summary.

GCS – WGHS PHYSICAL EDUCATION FACIL ITY PRE-BID PAGE 2 OF 5 MARCH 17 , 2016

B. Water Service A new water line is being extended from Friendway Road to the new building along the south drive, as

indicated on the Civil drawings.

C. Subsurface/Soils Report WT referenced the subsurface exploration report (dated 10/31/14), performed and prepared by Kleinfelder

(which is included in the Project Manual for the Contractors’ reference), highlighting the locations of the soil test borings performed.

WT stated that, based on information/recommendations included in the subsurface exploration report, various earthwork allowances are to be included in the Contractor’s bids (refer to Specification Section 01 21 00 – Allowances). All such allowance amounts shall be based on the quantity indicated times the unit prices to be submitted by the Bidders as part of their bid submission. BC noted that the allowances may be modified by addenda at the Owner’s request.

IV. PROJECT SCOPE OF WORK

A. Review of Site/Civil Documents AR briefly reviewed the extent of the Site/Civil work, and noted that all relevant site information is indicated on

the Civil drawings.

AR called special attention to the site phasing plan for the new work, as indicated on Sheet C-7.01.

B. Review of ADA/Access Improvements at Existing Athletic Fields BC/WT briefly reviewed the scope of work associated with accessible field access/parking walks at the existing

athletic fields, and ramp to the existing elevated seating area.

WT stated that work associated with ADA/access improvement at the existing athletic fields would need to be coordinated with the Owner’s schedule (so as not to interrupt schedule field use), but noted that the work could potentially take place this summer.

C. Review of Architectural/Interior Design Documents BC reviewed the Architectural portion of the construction documents highlighting the extent and type of

construction materials to be used.

The building exterior materials are a mix of modular brick, split faced concrete masonry units (CMU) and ground faced CMU with CMU backup. The building shall primarily have a low-slope modified bitumen built-up roof system, although there is an area of standing seam metal roof at the bus canopy.

There is a new section of pre-engineered walkway cover connecting the new building to the existing building.

BC briefly reviewed the selected finishes for the interior and exterior of the project.

The scope of work also includes renovations within the existing building to modify the existing Auxiliary Gymnasium into a Multi-Purpose room. Bidders are to refer to the drawings for additional bid alternates associated with that modification (i.e. acoustical panels and new windows).

D. Review of Structural Documents BC briefly described the structural systems, and noted that all relevant structural information is indicated on

the Structural drawings.

BC stated that the primary structural system is steel roof structure on load-bearing CMU.

BC noted the extent of the new site retaining wall at the new building, to be installed as part of this project.

E. Review of Plumbing, Mechanical, Electrical and Fire Protection Documents SM briefly reviewed the Plumbing, Mechanical, Electrical and Fire Protection scopes of work, as indicated on

the Construction Documents.

SM provided a basic description of the mechanical and plumbing systems/equipment.

SM confirmed that there is a bid alternate for Alerton to be the manufacturer of the mechanical equipment controls. Bidders shall refer to specification section 01 23 00 for additional information.

MR briefly reviewed the electrical site utility plan, denoting routing of technology cabling from the existing building to the new building (and associated above-ceiling work to be performed with the new building). Fire alarm, security and technology plans were also briefly reviewed. MR noted that the fire alarm system for the new building does require voice evacuation.

MR noted that there is a bid alternate for LED lighting within the new Gymnasium.

MR reviewed the scope of electrical work within the existing Auxiliary Gym (for conversion to a Multi-Purpose Room).

MR/PT stated that the bidders should refer to the technology specifications for clarification of Owner-furnished items (to be installed by the Contractor) versus Contractor-provided items.


BC reviewed the Fire Protection scope of work, as indicated on the Construction Documents. The new building is to be fully sprinklered. The existing building is (including area of Auxiliary Gym/Multi-Purpose Renovation) is not currently sprinklered and will not be sprinklered as part of this project.

F. Quality of Work/Special Inspections WT stated that the project specifications define quality control requirements related to specific items, and

noted that the Design Team members will be thoroughly reviewing all submittals, and will be on site regularly throughout construction to ensure that the Contractors(s) adhere to the quality standards established by the specifications.

WT stated that the Owner will be contracting separately with ESP Associates for the Special Inspections required on this project, as indicated on the Statement of Special Inspections on Sheet S0.2. The Contractor will be required to coordinate the schedule with the Owner’s Special Inspector. A separate Special Inspections Pre-Construction Meeting will be held with the Contractor(s) and other appropriate individuals to review the special inspections requirements.

G. Clarification of Owner-Furnished or Provided Items BC stated that the Owner will be providing all office/building furniture, except the storage shelving noted in the

Construction Documents. The Owner will furnish specific toilet accessories for installation by the General Contractor, as noted on Sheet A3.1. All other toilet accessories are to be furnished and installed by the General Contractor.

V. BIDDING ITEMS

A. Bid Date/Time/Location Bids are to be received no later than 2:00 PM on Tuesday, April 12, 2016. Bids will be received in Conference

Room 100 at 501 W. Washington Street, Greensboro, NC 27401, and will then be opened in the same location. Bidders are advised to allow enough time to find parking in a downtown environment. Late bids will not be accepted.

This is a public bid and, as such, the bid opening shall be open to the public.

WT confirmed that no faxed or emailed bids will be accepted.

WT stated that the bids shall not include qualifications, contractor’s contingencies or escalator clauses.

B. MWBE Participation/Bid Requirements BC stated that the Owner has set a minimum goal of 12.46% MWBE participation on the project. All bidders

shall familiarize themselves with the M/WSEDBE bidding requirements outlined in the “Participation By Minority, Women and Disabled Owned Businesses (MWBE)” document as included in the Project Manual.

All Bidders shall complete the “Identification of MWBE Participation” document and include it with their bid. Bidders shall also complete “Affidavit A” (all three sections) and include it with their bid. It is important that the MWBE businesses identified on the “Identification of MWBE Participation” form be the same as those indicated in Section II of “Affidavit A”, and those indicated as major Sub-Contractors on the bid form, as applicable.

All bidders checking Items 1 or 7 of Section I of Affidavit A must submit documentation supporting those good faith efforts with their bid. Other documentation will be required within 72 hours of notification of being the apparent lowest, responsible, responsive bidder, as noted in Section III, Part B of Affidavit A.

“Affidavit B” (Intent to Perform Contract with Own Workforce) is only applicable and only need be submitted if the General Contractor will be self-performing all work with their Owner forces.

BC stated that bidders may refer to the Facilities and Purchasing Departments’ pages on the Guilford County Schools website for a listing of MWBE Sub-Contractors by discipline. Bidders may also look at the state website for a listing of certified MWBE vendors.

C. Bonding Requirements (Bid, Performance & Payment Bonds) A Bid Bond (5%) is required for this project and is to be included in the submitted bid.

A Performance and Labor and Material Payment Bond will be required for 100% of Construction Contract Amount.

D. Form of Proposal WT reiterated that the project is bidding single-prime, as noted above.

WT reviewed the Bid Form as included in the Project Manual, specifically noting that the bid amount shall include all State and local sales and use taxes. Taxes shall be paid by the Contractors and shall be submitted for reimbursement from the Owner at the same time as each application for payment is submitted on the form provided in the Project Manual.

WT requested that all carefully review the allowances to be included in the base bid amount, per Specification Section 01 21 00. In many cases, these allowances that are tied to the Unit Prices to be submitted by all


bidders with their bid. The number of allowances may be modified per Owner request and, if so, this information will be issued in a pending Addendum.

WT requested that all bidders carefully review the eight (8) alternate prices to be indicated on the Bid Form. Specification Section 01 23 00 provides a description of each alternate, and the alternates are also referenced on the drawings, where applicable.

WT requested that all bidders carefully review the fourteen (14) unit prices to be submitted by each bidding General Contractor along with their bid on the form provided in the Project Manual.

Bids will be binding for a period of sixty (60) days from the bid date.

WT stated that each bid shall have a wet/embossed corporate seal and shall be signed, as required.

WT stated that each biding General Contractor shall indicate their major Sub-Contractors in the appropriate locations on the Bid Form.

WT stated that each bidder must also complete the Iran Divestment Act Form (as included in the Project Manual) and include it in their bid package.

E. Substitutions WT noted that Contractor’s substitution requests must be received 10 days prior to bid. Unless a substitution

request is received prior to that date, it will not be entertained. Contractors are not to assume any substitutions in the preparation of their bids unless specifically identified in an Addendum by the Architect.

Contractors were referred to Article 3.3.2 of the Instructions to Bidders regarding the procedures/requirements for submitting substitution requests, noting that the burden of proof of the merit of a proposed substitution is on the General Contractor submitting the substitution request. Substitution requests should be made only by bidding General Contractors. Substitution requests are not to be submitted to the Design Team directly by Sub-Contractors or manufacturers/suppliers.

F. Responsibilities of Bidders and Selected Contractors WT stated that any bidding General Contractor will be issued one (1) set of Construction Documents (plans

and Project Manual) for a plan deposit of $250.00. Any Contractors desiring more copies may contact Duncan-Parnell in Greensboro to purchase additional copies at their cost [(336)855-1211].

WT stated that the documents are available to be viewed at numerous plan rooms [including online plan room(s)], as indicated on the Advertisement for Bids.

WT stated that any hard copy sets of documents distributed to bidding Contractors must be returned by non-successful bidders for redistribution to the successful Contractor(s) and, as such, should be kept clean and in order. All Contractors will be responsible to return the Drawings, Project Manual and any received Addenda in good condition in order to have their deposit check returned.

BC stated that all addenda shall be issued only to the Contractors bidding the project who have either paid a plan deposit or requested electronic documents directly from TFF Architects, and to the Plan Rooms in possession of the Bid Documents. Addenda will not be distributed to Sub-Contractors. It is the responsibility of the General Contractors to distribute addenda, as required, to their Sub-Contractors and suppliers.

WT requested that all General Contractors review Article 11 of the General Conditions for insurance requirements.

WT confirmed that bidders are to include in their bid the cost of obtaining all permits, fees (including the building permit fees), licenses and inspections, per Article 3.7.1 of the General Conditions

PT confirmed that the General Contractor will be required to provide the Builder’s Risk Insurance. TFF Architects will include this clarification in a pending addendum.

WT stated that all bidders should thoroughly review the Project Manual including, but not limited to the Instructions to Bidders and General Conditions of the Contract.

G. Procedures for Bidders’ Questions BC stated that all questions shall be e-mailed to him at [email protected] or faxed to TFF Architects at

(336) 273-0141. All questions must be sent by General Contractors only. TFF Architects will neither accept nor answer any questions directly from Sub-Contractors, suppliers or vendors. If answers require only a clarification of items already identified in the documents, the response will be via email, phone or fax to the person submitting the question. If the response requires a change to the documents, it will be issued by Addendum to all bidders.

BC stated that the cut-off date/time for questions shall at 2:00 PM on April 5, 2016, but encouraged all bidders to get their questions in as early as possible in order to allow adequate time to get any responses into an Addenda (as necessary).


H. Issuance of Addenda BC stated that it is the intent of the Design Team to issue a final Addendum (if necessary) on or about April 5,

2016.

VI. MISCELLANEOUS ITEMS

A. Availability of Site Inspections prior to Bid WT encouraged all bidders to review the site and all existing conditions following the meeting.

Contractors (or their Sub-Contractors) desiring to schedule an additional site visit other than immediately following the Pre-Bid Meeting were directed to coordinate those visits through the WGHS school office. All such visits need to occur outside of normal school hours, and it was proposed that visits during Spring Break (March 28 – April 1) would be ideal, since there would be no students on campus during that time.

B. Liquidated Damages WT directed bidders to review the liquidated damages associated with each phase of the project, as indicated

in Articles 3.3.1 and 3.3.2 of the Standard Form of Agreement Between Owner and Contractor.

C. Safety Concerns and Use of Site WT stated that, as previously noted, the project area is on an existing, occupied school site. The successful

General Contractor will be responsible to ensure the security of the site jobsite, as well as complying with their own safety guidelines and/or OSHA (whichever is more stringent). The Contractor will also be required to comply with the requirements outlined in Specification Section 01 14 00 (Work Restrictions), including the requirement for background checks on all employees and sub-contractors that will be working on the site. Bidders were encouraged to also review Specification Section 01 14 00 (Work Restrictions).

PT confirmed that, in regard to Article 1.5, D, 7 of Specification Section 01 14 00 (Work Restrictions), the Owner’s legal consul has advised that GCS can allow an individual with a felony drug possession charge to work on a GCS project if the conviction was over ten (10) years ago. This will only apply to non-violent drug offenses.

D. Emphasis on General and Supplementary General Conditions WT reiterated the need for all bidders to thoroughly review the General Conditions of the Project, as included

in the Project Manual.

VII. QUESTIONS/ANSWERS

A. Bidder’s Questions In addition to any questions noted elsewhere in this summary, questions as noted below were also received

during or after the Pre-Bid Meeting. Responses to these questions will be researched by the Design Team and in instances where it is deemed that a formal response or clarification is warranted, it will be issued by Addendum.

One bidder asked if the Owner would consider moving the bid time to 3 PM in lieu of 2 PM. The Owner has subsequently reviewed this request and confirmed that the bid time needs to stay at 2 PM, as currently indicated.

One bidder questioned who was the manufacturer of the existing building’s fire alarm system and if the new building’s system needed to connect to the existing system. Subsequent to the meeting, the Owner has confirmed that the existing system is by Faraday, but that they do not desire to have the new building connect to it. The new building will be a separate/standalone system as currently designed.

VIII. SITE VISITS

A. Bidder’s Review of the Existing Site Conditions At the conclusion of the meeting, all bidders were encouraged to review the site and all existing conditions, as

noted above. Any subsequent site visits by bidders will need to be coordinated in advance with the Owner.

END OF PRE-BID MEETING SUMMARY Please notify the Architect immediately if any modifications of this summary are required. Reported by: Brian S. Carroll, AIA, LEED AP TFF Architects & Planners, LLP Attachment: Sign-In Sheets (2 pages) cc. Julius Monk/Sam Masters – GCS Juhann Waller – JC Waller & Associates Lance Williams – Stewart Engineering (file)

PM Initials

DOC Initials

PROPOSAL #: CONTRACT:

CONTRACTOR: CONTRACTOR #:

DESCRIPTION OF CHANGE:

Materials (Attach list with qty, item, unit mh, total mh, OT mh, Total $)

1 Total direct cost of materials ‐$

2 Sales Tax 6.75% ‐$

3 Shipping and transportation ‐$

4 Subtotal ‐$

5 Overhead and Profit on Item 4 ‐$ (10%max. Inc. small tools & consumables)

Materials Subtotal ‐$

Labor (include time sheets if requested)

5 Total man‐hours: 0 @ 0 ‐$

6 Payroll taxes and insurance@ 0% ‐$ Maximium 40%

7 Subtotal ‐$

8 Overhead and Profit on Item 7 ‐$

Labor Subtotal ‐$

Equipment Rental (includes quotes and pick‐up / delivery tickets)

9 Equipment Rental ‐$

10 Overhead and Profit on Item 9 (10%maximum) ‐$

Equipment Rental Subtotal ‐$

Subcontractors (includes quotes with material and equipment backup)

11 Subcontractors ‐$

12 Overhead and Profit on Item 11 (5%maximum) ‐$

Subcontractor Subtotal ‐$

Subtotal of Proposal ‐$

12 Bonds (___%of subtotal proposal) 0.00% ‐$

TOTAL OF CHANGE PROPOSAL ‐$

Time Extension Request days Schedule Activity # Affected

Contractor's Signature: Date:

Architect's Signature: Date:

Owner's Signature: Date:

Change Order Request Form Section 00 63 57

(10%max. on straight labor cost, not premium portion). (O&P

includes supervisor's time).

Western Guilford High School Physical Education Facility

DATE: ____________________

1

ALLOWANCES Section 01 21 00

ALLOWANCES 1

WESTERN GUILFORD HIGH SCHOOL – Physical Education Facility

PART 1 – GENERAL

1.1 RELATED DOCUMENTS A. The Drawings and provisions of the General Conditions, Supplementary General Conditions, and other

Sections included under Division1, General Requirements, are included as a part of this Section as though bound herein.

B. Designate in Pay Requests and Schedule of Values separate item for cost allowances. Also breakdown costs as follows: 1. Products/materials 2. Work

1.2 ALLOWANCES FOR PRODUCTS/MATERIAL:

A. Purchase product/material under allowance only as directed by A/E.

B. Amount of allowance includes:

1. Net cost of product. 2. Delivery to the site. 3. Applicable taxes.

C. In addition to amount of allowance, include in bid, for inclusion in Contract Sum, Contractor’s cost for:

1. Handling at site including unloading, uncrating, and storage. 2. Protection from elements, from damage. 3. Labor, installation, and finishing. 4. Other expenses (e.g., testing, adjusting, and balancing) required to completed installation. 5. Overhead and profit.

1.3 ALLOWANCES FOR WORK

A. Provide Work under allowance only as directed by A/E.

B. Amount of Allowance includes:

1. Net cost of product. 2. Delivery to the site. 3. Applicable taxes. 4. Handling at site including unloading, uncrating, and storage. 5. Protection from elements, from damage. 6. Labor, installation, and finishing.


ALLOWANCES 2

7. Other expenses required to complete installation.

8. A fixed percentage for overhead and profit. Overhead shall include supervision; superintendence; wages of time-keepers, watchmen, and clerks; hand tools, general office expense; and other expenses not included in “cost” under 1. Through 8. Above. a) For Work (labor, materials, and equipment) completed by the Contractor with his own labor, 10

percent shall be added for overhead and profit. b) For Work (labor, materials, and equipment) completed by subcontractor of the Contractor, 5 percent

shall be added for overhead and profit.

1.4 SELECTION OF PRODUCT/MATERIAL A. Architect/Engineer’s Duties

1. Consult with Contractor in consideration of product/material and suppliers. 2. Make selection, designate product/material to be used. 3. Notify Contractor in writing, designating:

a) Product, size, color, and texture b) Supplier c) Cost, delivered at site

B. Contractor’s Duties

1. Assist A/E in determining qualified suppliers. 2. Obtain proposals from suppliers when requested by Architect/Engineer. 3. Make appropriate recommendations for consideration by Architect/Engineer. 4. Notify A/E in writing, of effect anticipated by selection of product or supplier under consideration on:

a) Construction Schedule. b) Contract Sum.

5. On notification of selection enter into purchase agreement with designated supplier. 6. Arrange for delivery and unloading. 7. Promptly inspect product for damage or defects. 8. Submit claims for transportation damage.

1.5 ADJUSTMENT OF CASH ALLOWANCES

A. Unused amounts of moneys included under allowances shall be credited to the Owner by deduct change order

prior to approval of Final Application for Payment.


ALLOWANCES 3

PART 2 – PRODUCTS (NOT APPLICABLE)

PART 3 – EXECUTION

3.1 SCHEDULE OF ALLOWANCES A. Allowances for Work: Note: If not described below, refer to Article 1.3 for description of what is included

in the allowance.

B. Quantity Allowance

General: The Contractor shall include the following quantity allowances in the Base Bid, based upon the unit prices listed in section 012200 and attached to the Bid Form of Proposal.

NOTE: All charges against allowances for Rock, Unsuitable Soils and Borrow shall be applicable only under the following conditions:

a. Grading (cut) has been accomplished to subgrade. b. The location has been identified. c. The Architect has been notified of location and anticipated extent of rock, unsuitable soil and borrow. d. The Owner’s testing agency is notified to evaluate, make recommendations, monitor related

operations, and to measure quantities. e. Appropriate calculations and records are kept by the Contractors for verification with the Architect

and Owner’s testing agency. f. The time of performance for the quantities listed in the allowance schedule are to be included in the

contractor’s original base bid construction schedule as critical path activities. No extensions of time will be granted for these activities unless the amount listed in the allowance schedule is exceeded, and only if the excess amount impacts the critical path of the project.

1. Rock removal in Open Areas (Mass Rock) and disposal off-site: Under the Base Bid, include an allowance for the removal of 50 cubic yards per Unit Price U-1 of trench rock and hauling to an OFFSITE location for disposal.

2. Rock removal in Trenches and Pits (Trench Rock) disposal off-site : Under the Base Bid, include an allowance for the removal of 100_cubic yards per Unit Price U-2of trench rock and hauling it to an OFFSITE location for disposal as directed by the Architect.

3. Unsuitable soils removal and disposal off site: Under the Base Bid, include an allowance for the removal of _2,250_cubic yards per Unit Price U-3 of unsuitable soils in and hauling it to an OFFSITE location for disposal.

4. Replacement of authorized Unsuitable Soils or Rock with off-site suitable soils: Under the Base Bid, include an allowance for the removal of 1,750_cubic yards per Unit Price U-4of unsuitable soils or rock and hauling it to an OFFSITE location for disposal.

5. Replacement of authorized excavation of unsuitable soils or rock with Aggregate Base Course (ABC) stone material: Under the Base Bid, include an allowance for bringing in 400_cubic yards per Unit Price U-5 of ABC Stone per the Specifications.

6. Replacement of authorized excavation of unsuitable soils or rock with #57 washed stone material: Under the Base Bid, include an allowance for 250_cubic yards per Unit Price U-6 of Washed Stone Material, per the Specifications.

7. Geo-Grid in place: Under the Base Bid, include an allowance for the addition of 500 square yards per Unit Price U-7 of Geo-Grid in place.

8. Acoustic Panels: Under the Base Bid, include an allowance for providing an additional eight (8) acoustical wall panels per Unit Price U-8.


ALLOWANCES 4

9. Duplex power outlets: Under the Base Bid, include an allowance for providing an additional four (4) outlets per Unit Price U-9.

10. Data box/conduit stubbed above ceiling: Under the Base Bid, include an allowance for providing an additional four (4) data box/conduits per Unit Price U-10.

11. Smoke detectors: Under the Base Bid, include an allowance for providing an additional three (3) smoke detectors per Unit Price U-11.

12. Fire alarm horn/strobe: Under the Base Bid, include an allowance for providing an additional three (3) fire alarm horn/strobes per Unit Price U-12.

13. Fire alarm pull station/strobe: Under the Base Bid, include an allowance for providing an additional three (3) fire alarm pull station/strobe per Unit Price U-13.

14. Exit sign: Under the Base Bid, include an allowance for providing an additional three (3) exit signs per Unit Price U-14.

END OF SECTION 01 21 00

SUBMITTALS Section 01 33 00

SUBMITTALS

WESTERN GUILFORD HIGH SCHOOL – Physical Education Facility PART 1 - GENERAL .1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions

and other Division 1 Specification Sections, apply to this Section. .2 SUMMARY A. This Section includes administrative and procedural requirements for submittals required for

performance of the Work, including the following: 1. Contractor's construction schedule. 2. Submittal schedule. 3. Shop Drawings. 4. Product Data. 5. Samples. 6. Quality assurance submittals. B. Administrative Submittals: Refer to other Division 1 Sections and other Contract Documents for

requirements for administrative submittals. Such submittals include, but are not limited to, the following:

1. Permits. 2. Applications for Payment. 3. Performance and payment bonds. 4. Insurance certificates. 5. List of subcontractors. C. Related Sections: The following Sections contain requirements that relate to this Section: 1. Division 1 Section "Applications for Payment" specifies requirements for submittal of the

Schedule of Values. 2. Division 1 Section "Quality Control" specifies requirements for submittal of inspection and

test reports. 3. Division 1 Section "Contract Closeout" specifies requirements for submittal of Project

Record Documents and warranties at project closeout. .3 DEFINITIONS A. Coordination Drawings show the relationship and integration of different construction elements that

require careful coordination during fabrication or installation to fit in the space provided or to function as intended.


SUBMITTALS

B. Field samples are full-size physical examples erected on-site to illustrate finishes, coatings, or finish materials. Field samples are used to establish the standard by which the Work will be judged.

.4 SUBMITTAL PROCEDURES A. Coordination: Coordinate preparation and processing of submittals with performance of

construction activities. Transmit each submittal sufficiently in advance of performance of related construction activities to avoid delay.

1. Coordinate each submittal with fabrication, purchasing, testing, delivery, other submittals,

and related activities that require sequential activity. 2. Coordinate transmittal of different types of submittals for related elements of the Work so

processing will not be delayed by the need to review submittals concurrently for coordination.

a. TFF Architects reserves the right to withhold action on a submittal requiring

coordination with other submittals until all related submittals are received. 3. Processing: To avoid the need to delay installation as a result of the time required to process

submittals, allow sufficient time for submittal review, including time for resubmittals. a. Allow 2 weeks for initial review. Allow additional time if TFF Architects must delay

processing to permit coordination with subsequent submittals. b. If an intermediate submittal is necessary, process the same as the initial submittal. c. Allow 2 weeks for reprocessing each submittal. d. No extension of Contract Time will be authorized because of failure to transmit

submittals to TFF Architects sufficiently in advance of the Work to permit processing.

B. Submittal Preparation: Place a permanent label or title block on each submittal for identification.

Indicate the name of the entity that prepared each submittal on the label or title block. 1. Provide a space approximately 4 by 5 inches (100 by 125 mm) on the label or beside the title

block on Shop Drawings to record the Contractor's review and approval markings and the action taken.

2. Include the following information on the label for processing and recording action taken. a. Project name. b. Date. c. Name and address of TFF Architects. d. Name and address of the Contractor. e. Name and address of the subcontractor. f. Name and address of the supplier. g. Name of the manufacturer. h. Spec section number & name C. Submittal Transmittal: Package each submittal appropriately for transmittal and handling. Transmit

each submittal from the Contractor to TFF Architects using a transmittal form. TFF Architects will not accept submittals received from sources other than the Contractor.


SUBMITTALS

1. On the transmittal, record relevant information and requests for data. On the form, or separate

sheet, record deviations from Contract Document requirements, including variations and limitations. Include Contractor's certification that information complies with Contract Document requirements.

.5 CONTRACTOR'S CONSTRUCTION SCHEDULE A. Bar-Chart Schedule: Prepare a fully developed, horizontal bar-chart-type, contractor's construction

schedule. Submit within 15 days after the date established for "Commencement of the Work." 1. Provide a separate time bar for each significant construction activity. Provide a continuous

vertical line to identify the first working day of each week. Use the same breakdown of units of the Work as indicated in the "Schedule of Values."

2. Within each time bar, indicate estimated completion percentage in 10 percent increments. As Work progresses, place a contrasting mark in each bar to indicate Actual Completion.

3. Prepare the schedule on a sheet, or series of sheets, of stable transparency, or other reproducible media, of sufficient width to show data for the entire construction period.

4. Secure time commitments for performing critical elements of the Work from parties involved. Coordinate each element on the schedule with other construction activities; include minor elements involved in the sequence of the Work. Show each activity in proper sequence. Indicate graphically the sequences necessary for completion of related portions of the Work.

5. Coordinate the Contractor's Construction Schedule with the Schedule of Values, list of subcontracts, Submittal Schedule, progress reports, payment requests, and other schedules.

6. Indicate completion in advance of the date established for Substantial Completion. Indicate Substantial Completion on the schedule to allow time for TFF Architects procedures necessary for certification of Substantial Completion.

B. Distribution: Following response to the initial submittal, print and distribute copies to TFF Architects, Owner, subcontractors, and other parties required to comply with scheduled dates. Post copies in the Project meeting room and temporary field office.

1. When revisions are made, distribute to the same parties and post in the same locations. Delete

parties from distribution when they have completed their assigned portion of the Work and are no longer involved in construction activities.

C. Schedule Updating: Revise the schedule after each meeting, event, or activity where revisions have

been recognized or made. Issue the updated schedule concurrently with the report of each meeting. .6 SUBMITTAL SCHEDULE A. A submittal schedule is required for this project. The schedule shall be organized based upon the technical specification index for divisions 2-49 of this project. .7 DAILY CONSTRUCTION REPORTS


SUBMITTALS

A. Prepare a weekly construction report recording the following information concerning events at the site, and submit duplicate copies to TFF Architects at monthly intervals:

1. List of subcontractors at the site. 2. Approximate count of personnel at the site. 3. High and low temperatures, general weather conditions. 4. Accidents and unusual events. 5. Meetings and significant decisions. 6. Stoppages, delays, shortages, and losses. 7. Meter readings and similar recordings. 8. Emergency procedures. 9. Orders and requests of governing authorities. 10. Change Orders received, implemented. 11. Services connected, disconnected. 12. Equipment or system tests and startups. 13. Partial Completions, occupancies. 14. Substantial Completions authorized. .8 SHOP DRAWINGS A. Submit newly prepared information drawn accurately to scale. Highlight, encircle, or otherwise

indicate deviations from the Contract Documents. Do not reproduce Contract Documents or copy standard information as the basis of Shop Drawings. Standard information prepared without specific reference to the Project is not a Shop Drawing.

B. Shop Drawings include fabrication and installation Drawings, setting diagrams, schedules, patterns,

templates and similar Drawings. Include the following information: 1. Dimensions. 2. Identification of products and materials included by sheet and detail number. 3. Compliance with specified standards. 4. Notation of coordination requirements. 5. Notation of dimensions established by field measurement. 6. Sheet Size: Except for templates, patterns and similar full-size Drawings, submit Shop

Drawings on sheets at least 8-1/2 by 11 inches (215 by 280 mm) but no larger than 36 by 48 inches (890 by 1220 mm).

7. Initial Submittal: Submit 2 blue- or black-line prints for TFF Architects to review. TFF Architects will return one print.

8. Final Submittal: Submit 3 blue- or black-line prints and 2 additional prints where required for maintenance manuals, plus the number of prints needed by TFF Architects for distribution. TFF Architects will retain 2 prints and return the remainder.

a. One of the prints returned shall be marked up and maintained as a "Record Document." 9. Do not use Shop Drawings without an appropriate final stamp indicating action taken. .9 PRODUCT DATA


SUBMITTALS

A. Collect Product Data into a single submittal for each specification section or each element of

construction or system. Partial submittals will NOT BE accepted. Product Data includes printed information, such as manufacturer's installation instructions, catalog cuts, standard color charts, roughing-in diagrams and templates, standard wiring diagrams, and performance curves.

1. Mark each copy to show applicable choices and options. Where printed Product Data

includes information on several products that are not required, mark copies to indicate the applicable information. Include the following information:

a. Manufacturer's printed recommendations. b. Compliance with trade association standards. c. Compliance with recognized testing agency standards. d. Application of testing agency labels and seals. e. Notation of dimensions verified by field measurement. f. Notation of coordination requirements. 2. Do not submit Product Data until compliance with requirements of the Contract Documents

has been confirmed. 3. Submittals: Submit 2 copies of each required submittal; submit 4 copies where required for

maintenance manuals. TFF Architects will retain one and will return the other marked with action taken and corrections or modifications required.

a. Unless noncompliance with Contract Document provisions is observed, the submittal

may serve as the final submittal. 4. Distribution: Furnish copies of final submittal to installers, subcontractors, suppliers,

manufacturers, fabricators, and others required for performance of construction activities. Show distribution on transmittal forms.

a. Do not proceed with installation until a copy of Product Data is in the Installer's

possession. b. Do not permit use of unmarked copies of Product Data in connection with

construction. .10 SAMPLES A. Samples are required as indicated in technical specification divisions 2-49 for this project. .11 QUALITY ASSURANCE SUBMITTALS A. Submit quality-control submittals, including design data, certifications, manufacturer's instructions,

manufacturer's field reports, and other quality-control submittals as required under other Sections of the Specifications.


SUBMITTALS

B. Certifications: Where other Sections of the Specifications require certification that a product, material, or installation complies with specified requirements, submit a notarized certification from the manufacturer certifying compliance with specified requirements.

1. Signature: Certification shall be signed by an officer of the manufacturer or other individual

authorized to sign documents on behalf of the company. C. Inspection and Test Reports: Requirements for submittal of inspection and test reports from

independent testing agencies are specified in Division 1 Section "Quality Control." .12 TFF ARCHITECTS ACTION A. Except for submittals for the record or information, where action and return is required, TFF

Architects will review each submittal, mark to indicate action taken, and return promptly. 1. Compliance with specified characteristics is the Contractor's responsibility. B. Action Report: TFF Architects attach to each submittal a uniform, action summary sheet. TFF

Architects will mark the sheet appropriately to indicate the action taken, as follows: 1. Final Unrestricted Release: When TFF Architects marks a submittal "No Exceptions

Taken," the Work covered by the submittal may proceed provided it complies with requirements of the Contract Documents. Final payment depends on that compliance.

2. Final-But-Restricted Release: When TFF Architects marks a submittal "Note Markings," the Work covered by the submittal may proceed provided it complies with notations or corrections on the submittal and requirements of the Contract Documents. Final payment depends on that compliance.

3. Returned for Resubmittal: When TFF Architects marks a submittal "Not Approved, Revise and Resubmit," do not proceed with Work covered by the submittal, including purchasing, fabrication, delivery, or other activity. Revise or prepare a new submittal according to the notations; resubmit without delay. Repeat if necessary to obtain different action mark.

a. Do not use, or allow others to use, submittals marked "Not Approved, Revise and

Resubmit" at the Project Site or elsewhere where Work is in progress. 4. Other Action: Where a submittal is for information or record purposes or special processing

or other activity, TFF Architects will return the submittal marked "Action Not Required." C. Unsolicited Submittals: TFF Architects will return unsolicited submittals to the sender without

action. PART 2 - PRODUCTS (Not Applicable) PART 3 - EXECUTION (Not Applicable) END OF SECTION 01 33 00

Guilford County Schools Western Guilford High School Physical Education Facility 14114

MODIFIED BITUMINOUS PROTECTED MEMBRANE ROOFING 075552 - 1

SECTION 075552 - MODIFIED BITUMINOUS PROTECTED MEMBRANE ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes SBS-modified bituminous protected membrane roofing.

1.2 DEFINITIONS

A. Hot Roofing Asphalt: Roofing asphalt heated to its equiviscous temperature, the temperature at which its viscosity is 125 centipoise for mop-applied roofing asphalt and 75 centipoise for mechanical spreader-applied roofing asphalt, within a range of plus or minus 25 deg F, measured at the mop cart or mechanical spreader immediately before application.

1.3 PERFORMANCE REQUIREMENTS

A. Roofing System Design: Provide membrane roofing system that is identical to systems that have been successfully tested by a qualified testing and inspecting agency to resist uplift pressure calculated according to ASCE/SEI 7. 1. Provide materials and methods to achieve FM class I-90 windstorm resistance.

B. Solar Reflectance Index: Not less than 78 when calculated according to ASTM E 1980 based on testing identical products by a qualified testing agency.

C. Energy Performance: Provide roofing system that is listed on the DOE's ENERGY STAR "Roof Products Qualified Product List" for low-slope roof products.

D. Energy Performance: Provide roofing system with initial Solar Reflectance not less than 0.70 and Thermal Emittance not less than 0.75 when tested according to CRRC-1.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

C. Samples for Verification: For flashing sheet, of color specified.

1.5 INFORMATIONAL SUBMITTALS

A. Research/evaluation reports.



1.6 CLOSEOUT SUBMITTALS

A. Maintenance data.

1.7 QUALITY ASSURANCE

A. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by membrane roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty.

B. Source Limitations: Obtain components for membrane roofing system from same manufacturer as membrane roofing.

C. Exterior Fire-Test Exposure: ASTM E 108, Class A; for application and roof slopes indicated, as determined by testing identical membrane roofing materials by a qualified testing agency.

D. Preinstallation Roofing Conference: Conduct conference at Project site, Western Guilford High School jobsite trailer.

1.8 WARRANTY

A. Special Warranty: Manufacturer's standard or customized form, without monetary limitation, in which manufacturer agrees to repair or replace components of membrane roofing system that fail in materials or workmanship within specified warranty period.

1. Warranty Period: 20 years from date of Substantial Completion.

2. Warranty shall be a NO DOLLAR LIMIT (NDL) coverage providing for repairs to roof leaks caused by natural defects and workmanship failures for the specified warranty period.

3. Warranty shall not be prorated and take effect on the Date of Substantial Completion.

PART 2 - PRODUCTS

2.1 SBS-MODIFIED ASPHALT-SHEET MATERIALS

A. SBS-Modified Bituminous Membrane Roofing:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Flex Membranes International. b. GAF Materials Corporation. c. Hickman, W. P. Systems, Inc. d. Honeywell International Inc. e. IKO. f. Johns Manville.



g. Malarkey Roofing Products. h. Siplast, Inc. i. Soprema. j. U.S. Intec; a division of BMCA.

B. Roofing Membrane Sheet: ASTM D 6162, Grade S, Type I or II, SBS-modified asphalt sheet (reinforced with a combination of polyester fabric and glass fibers); smooth surfaced; suitable for application method specified.

C. Granule-Surface Roofing Membrane Cap Sheet: ASTM D 6162, Grade G, Type I or II, SBS-modified asphalt sheet (reinforced with a combination of polyester fabric and glass fibers); granular surfaced; suitable for application method specified.

D. Metal-Foil-Surfaced Roofing Membrane Cap Sheet: ASTM D 6298, metal-foil surfaced SBS-modified asphalt sheet (reinforced with glass fibers); suitable for application method specified, and as follows:

1. Foil Surfacing: Aluminum.

2.2 BASE-SHEET MATERIALS

A. Base Sheet: ASTM D 4601, Type I, nonperforated, asphalt-impregnated and -coated, glass-fiber sheet, dusted with fine mineral surfacing on both sides.

B. Base Sheet: ASTM D 4897, Type II, venting, nonperforated, heavyweight, asphalt-impregnated and -coated, glass-fiber base sheet with coarse granular surfacing or embossed venting channels on bottom surface.

2.3 BASE-PLY SHEET MATERIALS

A. Glass-Fiber Base-Ply Sheet: ASTM D 2178, Type IV, asphalt-impregnated, glass-fiber felt.

2.4 BASE FLASHING SHEET MATERIALS

A. Backer Sheet: ASTM D 4601, Type I, asphalt-impregnated and -coated, glass-fiber sheet, dusted with fine mineral surfacing on both sides.

B. Backer Sheet: ASTM D 6162, Grade S, Type I or II, SBS-modified asphalt sheet (reinforced with a combination of polyester fabric and glass fibers); smooth surfaced; suitable for application method specified.

C. Granule-Surfaced Flashing Sheet: ASTM D 6162, Grade G, Type I or II, SBS-modified asphalt sheet (reinforced with a combination of polyester fabric and glass fibers); granular surfaced; suitable for application method specified, and as follows:

1. Granule Color: White.

D. Metal-Foil-Surfaced Flashing Sheet: ASTM D 6298, metal-foil surfaced SBS-modified asphalt sheet (reinforced with glass fibers); suitable for application method specified, and as follows:



1. Foil Surfacing: Aluminum, fluoropolymer coated finish, of color and gloss selected by Architect from manufacturer's full range.

2.5 AUXILIARY ROOFING MEMBRANE MATERIALS

A. General: Auxiliary materials recommended by roofing manufacturer for intended use and compatible with roofing membrane.

1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction.

2. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the following limits for VOC content when calculated according to 40 CFR 59, Subpart D (EPA Method 24):

a. Plastic Foam Adhesives: 50 g/L. b. Multipurpose Construction Adhesives: 70 g/L. c. Fiberglass Adhesives: 80 g/L. d. Contact Adhesives: 80 g/L. e. Other Adhesives: 250 g/L. f. Nonmembrane Roof Sealants: 300 g/L. g. Sealant Primers for Nonporous Substrates: 250 g/L. h. Sealant Primers for Porous Substrates: 775 g/L.

3. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

B. Asphalt Primer: ASTM D 41.

C. Roofing Asphalt: ASTM D 312, Type III or IV as recommended by roofing manufacturer for application.

D. Cold-Applied Adhesive: Roofing manufacturer's standard asphalt-based, one- or two-part, asbestos-free, cold-applied adhesive specially formulated for compatibility and use with roofing membrane and base flashings.

E. Asphalt Roofing Cement: ASTM D 4586, asbestos free, of consistency required by roofing manufacturer for application.

F. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Approvals 4470, designed for fastening roofing membrane components to substrate, tested by manufacturer for required pullout strength, and acceptable to roofing system manufacturer.

G. Insulation Cant Strips: ASTM C 728, perlite insulation board.

H. Insulation Cant Strips: ASTM C 208, Type II, Grade 1, cellulosic-fiber insulation board.

I. Separator Sheet: Polyethylene sheet, 4 mils thick, minimum.



2.6 COATING MATERIALS

A. Roof Coating: Acrylic elastomer emulsion coating, formulated for use on bituminous roof surfaces and complying with ASTM D 6083.

1. Color: White.

2.7 ROOF INSULATION

A. Extruded-Polystyrene Board Insulation: ASTM C 578, Type VI, 1.8 lb/cu. ft. with two or four edges rabbeted.

2.8 INSULATION ACCESSORIES

A. Protection Mat: Woven or nonwoven polypropylene, polyolefin, or polyester fabric, water permeable and resistant to UV degradation, type and weight as recommended by roofing system manufacturer for application.

B. Metal Securement System: Perimeter securement flashing and strapping fabricated from stainless steel, a minimum of 0.031 inch thick. Provide fasteners as recommended by mortar-faced insulation manufacturer.

PART 3 - EXECUTION

3.1 ROOFING MEMBRANE INSTALLATION, GENERAL

A. Install roofing membrane system according to roofing system manufacturer's written instructions and applicable recommendations in ARMA/NRCA's "Quality Control Guidelines for the Application of Polymer Modified Bitumen Roofing" and as follows:

1. Membrane: S (SBS). 2. Deck Type: C (concrete or nonnailable). 3. Adhering Method: T (torched). 4. Base Sheet: One. 5. Number of Glass-Fiber Base-Ply Sheets: One. 6. Number of Modified Asphalt Sheets: Two. 7. Surfacing Type: P (protected).

B. Where roof slope exceeds 1/2 inch per 12 inches, install roofing membrane sheets parallel with slope.

1. Backnail roofing membrane sheets to nailer strips according to roofing system manufacturer's written instructions.

C. Coordinate installing roofing system so components of the roofing membrane system not permanently exposed are not subjected to precipitation or left uncovered at the end of the workday or when rain is forecast.



D. Substrate-Joint Penetrations: Prevent roofing asphalt from penetrating substrate joints, entering building, or damaging roofing system components or adjacent building construction.

3.2 BASE-SHEET INSTALLATION

A. Install lapped base sheet course, extending sheet over and terminating beyond cants. Attach base sheet as follows:

1. Spot- or strip-mop to substrate with hot roofing asphalt. 2. Adhere to substrate in a uniform coating of cold-applied adhesive.

3.3 BASE-PLY SHEET INSTALLATION

A. Install glass-fiber base-ply sheets according to roofing system manufacturer's written instructions starting at low point of roofing system. Align glass-fiber base-ply sheets without stretching. Extend glass-fiber base-ply sheets over and terminate beyond cants. Embed glass-fiber base-ply sheet in a continuous void-free mopping of hot roofing asphalt, to form a uniform membrane without glass-fiber base-ply sheets touching.

3.4 MODIFIED BITUMINOUS MEMBRANE INSTALLATION

A. Install modified bituminous roofing membrane sheet and cap sheet according to roofing manufacturer's written instructions, starting at low point of roofing system. Extend roofing membrane sheets over and terminate beyond cants.

B. Laps: Accurately align roofing membrane sheets, without stretching, and maintain uniform side and end laps. Stagger end laps. Completely bond and seal laps, leaving no voids.

1. Repair tears and voids in laps and lapped seams not completely sealed. 2. Apply roofing granules to cover exuded bead at laps while bead is hot.

C. Install roofing membrane sheets so side and end laps shed water.

3.5 FLASHING AND STRIPPING INSTALLATION

A. Install base flashing over cant strips and other sloping and vertical surfaces, at roof edges, and at penetrations through roof, and secure to substrates according to roofing system manufacturer's written instructions.

B. Extend base flashing up walls or parapets a minimum of 8 inches above roofing membrane and 4 inches onto field of roofing membrane.

C. Mechanically fasten top of base flashing securely at terminations and perimeter of roofing.

D. Install roofing membrane cap-sheet stripping where metal flanges and edgings are set on membrane roofing according to roofing system manufacturer's written instructions.



3.6 COATING INSTALLATION

A. Apply coatings to base flashings according to manufacturer's written instructions, by spray, roller, or other suitable application method.

3.7 INSULATION INSTALLATION

A. Loosely lay separator sheet over cooled roofing membrane, with minimum 2-inch side laps and 4-inch end laps.

B. Loosely lay board insulation units over roofing membrane, with long joints of insulation in continuous straight lines and with end joints staggered between rows. Abut edges and ends between units.

C. Install one or more layers of insulation to achieve required thickness over roofing membrane. Cut and fit to within 3/4 inch of projections and penetrations.

1. Where overall insulation thickness is 2 inches or more, install required thickness in two or more layers with joints of each succeeding layer staggered over joints of previous layer a minimum of 6 inches in each direction.

D. Install geotextile fabric over insulation, overlapping edges and ends at least 12 inches. Do not lap ends of fabric sheets within 72 inches of roof perimeter. Extend fabric 2 to 3 inches above ballast at perimeter and penetrations. Apply additional layer of fabric around penetrations to prevent aggregate from getting between penetration and insulation. Do not cover drains or restrict water flow to drains.

1. Walkway Pavers: Install walkways formed from [one row] [two rows] of roof pavers,

loosely laid and butted.

END OF SECTION 075552

Guilford County Schools

Western Guilford High School Physical Education Facility 14114

WATER UTILITIES 331000 - 1

SECTION 33 10 00 - WATER UTILITIES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and

Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes water systems piping for potable water service and fire protection service outside

the building.

B. Related Sections: The following Sections contain requirements that relate to this Section:

1. Division 15 Sections for fire protection systems inside building.

2. Division 15 Sections for water distribution systems inside building.

1.3 SYSTEM PERFORMANCE REQUIREMENTS

A. Minimum Working Pressure Ratings: Except where otherwise indicated, the following are minimum

pressure requirements for water system piping.

1. Underground Piping: 150 psig.

2. Underground Piping, Downstream of Fire Department Connections: 200 psig.

1.4 SUBMITTALS

A. General: Submit the following according to Conditions of the Contract and Division 1 Specification

Sections.

B. Product data, including pressure rating, rated capacity, and settings of selected models for the following:

1. Water meters.

2. Valves.

3. Fire hydrants.

4. Identification materials and devices.

5. Pipe and Fittings.

C. Shop drawings for precast concrete pits. Include frames and covers. Include drains when indicated.

D. Shop drawings for cast-in-place concrete valve and meter pits. Include frames and covers. Include drains

when indicated.

E. Record drawings at Project closeout of installed water system piping and products according to Division 1

Section "Project Closeout."

F. As-Built survey of installed water system. Perform and submit as-built survey as soon as possible

following installation of water main piping and appurtenances. Survey shall be submitted at least 60-days

prior to needed use of water main.




G. Test reports specified in "Field Quality Control" Article in Part 3. Submit test reports at least 60-days

prior to needed use of water main.

1.5 QUALITY ASSURANCE

A. All materials, construction methods and testing shall comply with the requirements of the City of

Greensboro Standard Specifications for Water and Sewer Utility Construction.

B. Provide listing/approval stamp, label, or other marking on equipment made to specified standards.

C. Listing and Labeling: Provide equipment and accessories that are listed and labeled.

1. The Terms "Listed" and "Labeled": As defined in "National Electrical Code," Article 100.

2. Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing Laboratory"

(NRTL) as defined in OSHA Regulation 1910.7.

D. Product Options: Water systems specialties and accessories are based on specific types, manufacturers,

and models indicated. Components by other manufacturers but having equal performance characteristics

may be considered, provided deviations in dimensions, operation, and other characteristics do not change

design concept or intended performance as judged by Architect. The burden of proof of equality of

products is on Contractor. Refer to Division 1 Section "Product Substitutions."

E. All work within any NCDOT right-of-way shall conform to the requirements of the current version of the

NCDOT’s Policies and Procedures for Accommodating Utilities on Highway Rights of Way, the

provisions and conditions of the encroachment agreement(s), and other applicable NCDOT standards and

policies. The encroachment agreement(s) are considered part of the project specifications by reference.

Copies of the agreement(s) will be provided upon request from the Architect.

F. As-Built Survey: As-built survey shall be signed and seal by a NC Professional Land Surveyor and shall

include the following:

1. All fire hydrant water valve sizes and locations with no less than two primary reference dimensions

from permanent above grade features.

2. Locations of bacteriological sampling points.

3. Pipe materials and sizes.

4. Other water system components such as meters, backflow preventers, etc.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Preparation for Transport: Prepare valves, including fire hydrants, for shipping as follows:

1. Ensure that valves are dry and internally protected against rust and corrosion.

2. Protect valves against damage to threaded ends, flange faces, and weld ends.

3. Set valves in best position for handling. Set valves closed to prevent rattling.

B. Storage: Use the following precautions for valves, including fire hydrants, during storage:

1. Do not remove end protectors unless necessary for inspection; then reinstall for storage.

2. Protect valves from weather. Store valves indoors and maintain temperature higher than ambient

dew point temperature. Support valves off ground or pavement in watertight enclosures when

outdoor storage is necessary.




C. Handling: Use sling to handle valves and fire hydrants whose size requires handling by crane or lift. Rig

valves to avoid damage to exposed valve parts. Do not use handwheels or stems as lifting or rigging

points.

D. Deliver pipes and tubes with factory-applied end-caps. Maintain end-caps through shipping, storage, and

handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

E. Protect stored pipes and tubes from moisture and dirt. Elevate above grade. Do not exceed structural

capacity of floor when storing inside.

F. Protect flanges, fittings, and piping specialties from moisture and dirt.

G. Store plastic pipes protected from direct sunlight. Support to prevent sagging and bending.

1.7 PROJECT CONDITIONS

A. Perform site survey, research public utility records, and verify existing utility locations. Contact utility-

locating service for area where Project is located.

B. Verify that water system piping may be installed in compliance with original design and referenced

standards.

C. Site Information: Reports on subsurface condition investigations made during the design of the Project

are available for informational purposes only; data in reports are not intended as representations or

warranties of accuracy or continuity of conditions (between soil borings). Owner assumes no

responsibility for interpretations or conclusions drawn from this information.

1.8 SEQUENCING AND SCHEDULING

A. Coordinate connection to water main with utility company.

B. Coordinate with pipe materials, sizes, entry locations, and pressure requirements of building fire

protection and building water distribution systems piping.

C. Coordinate with other utility work.

PART 2 - PRODUCTS

2.1 GENERAL

A. All piping, valves, fittings, fire hydrants, meters, meter vaults, appurtenances and other products shall

conform to the requirements of the latest editions of the City of Greensboro Utility Standards, Details,

and Specifications.

B. Products shown herein, shall be approved in writing by the City of Greensboro, prior to ordering or

installation.

2.2 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that

may be incorporated in the Work shall be as approved by the City of Greensboro.

2.3 PIPES AND FITTINGS




A. Ductile-Iron Pipe: ANSI/AWWA C150/21.50 and C151/A21.51, Pressure Class 350 with ductile iron

fittings.

1. Lining: ANSI/AWWA C104/A21.4, cement mortar, seal coated.

2. Gaskets, Glands, and Bolts and Nuts: AWWA C111.

3. Push-On-Joint-Type Pipe: AWWA C111/ANSI A21.51, rubber gaskets.

4. Mechanical-Joint-Type Pipe: AWWA C111, rubber gaskets, ductile- or cast-iron glands, and steel

bolts and nuts.

5. Coating: AWWA C151, bituminous coating.

6. Markings: Net weight, pressure class, nominal thickness, sampling period and manufacturer,

“DUCTILE”.

7. Fittings: ANSI/AWWA C153/A21.53, ductile-iron compact fittings, 350-psig pressure rating.

a. Lining: ANSI/AWWA C104/A21.4, cement mortar.

b. Gaskets: AWWA C111, rubber.

c. Joints: AWWA C111, mechanical joint, all bell.

d. Coating: AWWA C151, bituminous coating.

B. Copper Tube: ASTM B 88, Types K, seamless water tube, annealed temper, with AWWA C800, flared

copper type brass fittings.

C. Steel Encasement Pipe: ASTM A139 and A283, logitudinally welded of smooth-wall seamless, grade

“B” steel, Minimum yield strength of 35,000-psi.

1. Thickness: Per NCDOT encroachment agreement but no less than 0.375-in. Ends shall be beveled

and prepared for field welding at the circumferential joints.

2. Coatings: Inside and outside, AWWA C203, ASTM 3034-12454 B and any additional

requirements of NCDOT.

3. Pipe Support: A minimum of one metal ‘spider’ device shall be provided for each joint of pipe.

4. Size: The inside diameter of the encasement pipe shall be 8-in greater than the nominal inside

diameter of the carrier pipe.

2.4 MECHANICAL JOINT RESTRAINTS

A. Wedge Action Retainer Gland

1. A mechanical joint follower gland shall be used with a gripping wedge restraint system that is

incorporated into the design of the gland. Proper torque of the wedges is regulated by twist off

nuts. It is used to restrain valves, fittings and hydrants to ductile iron pipe.

2. Rated Restraint:

a. 3” through 16”: 350-psi.

b. 16” through 36”: 250-psi:

3. Meg-A-Lug series 1100 by EBAA Iron Inc., Stargrip series 3000 by Star Pipe Products, One Lock

by Sigma Corporation, or pre-approved equivalent.

B. Mechanical Joint Tee with Restrained Swivel Branch (for Hydrant Installations)

1. This type of mechanical joint restrain shall be used for restraining mechanical joint gate valves

directly to tee.

C. Mechanical Joint Swivel by Mechanical Joint Solid Adapter

1. May be used to provide a restrained connection between the outlet side of a mechanical joint gate

valve and the mechanical joint connection on a fire hydrant. The length of the adapter shall be as

short as possible for the conditions.




2. Tees with swivel branch and swivel by solid adapters shall be cement lined with a seal coat of

bituminous material in accordance with ANSI/AWWA C104/A21.4 (Tyler Pipe Co., or pre-

approved equivalent.

2.5 VALVES

A. Nonrising Stem Gate Valves 3 Inches and Larger: AWWA C509, resilient seated; bronze stem, cast-iron

or ductile-iron body and bonnet, stem nut, 200-psig working pressure, mechanical joint ends. Valves shall

be Mueller, American Flow Control, M&H, Clow, Kennedy, US Pipe or approved equal.

B. Post Indicator Valves: NRS, UL 262, FM approved, iron body and bonnet with flange for indicator post,

bronze seating material, inside screw, 175-psig working pressure, mechanical joint ends.

C. Rising Stem Gate Valves 3 Inches and Larger for installation in vaults or other enclosure: AWWA C509,

resilient seated; OS&Y, bronze stem, cast-iron or ductile-iron body and bonnet, stem nut, 200-psig

working pressure, flanged ends.

D. Nonrising Stem Gate Valves, 2 Inches and Smaller: MSS SP-80; body and screw bonnet of ASTM B 62

cast bronze; with Class 125 threaded ends, solid wedge, nonrising copper-silicon alloy stem, brass

packing gland, polytetrafluoroethylene (PTFE)-impregnated packing, and malleable-iron handwheel.

E. Valve Boxes: Cast-iron box having top section and cover with lettering "WATER," bottom section with

base of size to fit over valve and barrel and adjustable cast-iron extension of length required for depth of

bury of valve.

1. Provide a steel tee-handle operating wrench with each valve box. Wrench shall have tee handle

with one pointed end, stem of length to operate valve, and socket-fitting valve-operating nut.

F. Indicator Posts: UL 789, FM-approved, vertical type, cast-iron body with operating wrench, extension

rod, and adjustable cast-iron barrel of length required for depth of bury of valve. Post indicator valves

(PIVs) on fire protection systems shall be equiped with a supervisory switch.

G. Curb Stops: Bronze body, ground key plug or ball, and wide tee head, with inlet and outlet to match

service piping material.

H. Service Boxes for Curb Stops: Cast-iron box with telescoping top section of length required for depth of

bury of valve. Include cover having lettering "WATER," and bottom section with base of size to fit over

curb stop and barrel approximately 3 inches in diameter.

1. Provide steel tee-handle shutoff rod with each service box. Shutoff rod shall have tee handle with

1 pointed end, stem of length to operate curb stop, and slotted end fitting curb stop head.

I. Tapping Sleeve and Tapping Valve: Complete assembly, including tapping sleeve, tapping valve, and

bolts and nuts. Use sleeve and valve compatible with tapping machine.

1. Tapping Sleeve: Mueller mechanical joint, Mueller Outlet Seal, American Uniseal or Kennedy

Square Seal. One hundred percent stainless steel sleeves may also be used, as manufactured by

Rockwell, Romac, or Ford provided that all metallic parts of the sleeves are 100% stainless steel

including bolts and nuts. All sleeves shall have a minimum of 150 psi working pressure. All taps

shall be machine drilled, no burned taps will be allowed.

J. Service Saddles and Corporation Stops: Complete assembly, including service saddle, corporation stop,

and bolts and nuts. Use service saddle and stop compatible with drilling machine.




1. Service Saddle: All bronze with double bronze straps and with a neoprene “O” ring gasket

attached to the body. The clamp shall ave corporation cock threads.

2. Corporation Stops: Bronze body and ground key plug, with AWWA C800 threaded inlet and

outlet matching service piping material.

3. Curb Stops: Bronze ball valve installed in a valve box located 2-ft from meter on street side.

2.6 WATER METERS

A. General: Water meters shall be purchased from the City of Greensboro. The Contractor shall coordinate

purchase and installation directly with the City of Greensboro. Contractor is responsible for all meter

costs and installation fees.

B. Detector-Type Water Meter: Refer to backflow preventer specification.

2.7 VAULTS

A. Concrete: Portland cement mix, 3000 psi .

1. Cement: ASTM C 150, Type I.

2. Fine Aggregate: ASTM C 33, sand.

3. Coarse Aggregate: ASTM C 33, crushed gravel.

4. Water: Potable.

B. Reinforcement: Steel conforming to the following:

1. Fabric: ASTM A 185, welded wire fabric, plain.

2. Reinforcement Bars: ASTM A 615, Grade 60, deformed.

C. Ladder: ASTM A 36, steel or polyethylene-encased steel steps.

D. Manhole: ASTM A 48, Class 35, gray-iron, 24-inch minimum diameter traffic frame and cover, of size

and weight indicated.

E. Drain: ASME A112.21.1M, cast-iron area drain, 4-in. Include body anchor flange, light-duty cast-iron

grate, bottom outlet, and integral or field-installed bronze ball or clapper-type backwater valve.

2.8 FIRE HYDRANTS

A. General: Cast-iron body, compression-type valve, opening against pressure and closing with pressure, 6-

inch mechanical joint inlet, 150-psig working pressure, break-away impact type. Hydrants shall be Clow

Medallion, Mueller Centurion, American Mark-73, Kennedy K-81D, M&H Model 929, or US Pipe

Metropolitan 250.

B. Outlet Threads: NFPA 1963, external hose nozzles with National Standard Threads. Include cast-iron

caps with steel chains.

C. Operating and Cap Nuts: Pentagon 1-1/2 inch point to flat.

D. Direction of Opening: Open hydrant valve by turning operating nut to the left, or counterclockwise.

E. Finish: Hydrant shall be painted as required by the City of Greensboro with a minimum of 4 mils of

fusion bonded or brush applied liquid epoxy AWWA approved for potable water. All other interior and

exterior ferrous metal surfaces shall receive one coat of primer paint in accordance with AWWA

standards. The exterior of the lower barrel shall receive one finish coat of black asphaltic varnish. The




exterior of the upper barrel, caps and bonnet shall receive one finish coat of enamel paint. Contractor

shall apply one full additonal coat to restore hydrant finish after installation and prior to final acceptance

by the City.

F. Dry-Barrel Fire Hydrants: AWWA C502, two 2-1/2-inch and one 4-1/2-inch outlets, 4-1/2-inch main

valve, drain valve, and 6-inch mechanical joint elbow. Bronze to bronze threads shall be provided

between the hydrant seat or seat ring and the seat attaching assembly. All hydrants shall include cast or

ductile epoxy lined shoe, rubber drain seals and positive, protective valve stop device.

2.9 FIRE DEPARTMENT CONNECTIONS

A. Exposed, Sidewalk Fire Department Connections: 5-in x 4-in with 30-deg turndown, 5-in Storz

connection inlet, 4-in female NPS outlet. Include cap and chain; fixed (no swivel) connection. Connect

to galvanized steel elbow and FDC pipe; and round sidewalk escutcheon plate marked “AUTO

SPRKLR”. Provide 1-in, ¼ (quarter) turn valve tapped into FDC pipe at 12-in above finish grade.

B. Wafer Check Valve: UL Listed/FM Approved, ductile iron body, bronze clapper and seat ring, ‘O’ ring

seals, stainless spring closure, with ½” ball drip valve below seat to allow valve to drain water from FDC.

C. Signage: Approx. 18”x10”, steel, white background with min. 6” red lettering, marked FDC, mounted on

a galvanized steel pole with concrete footing. Mounting height to bottom of sign: 5-ft. min.

2.10 ANCHORAGES

A. Clamps, Straps, and Washers: ASTM A 506, steel.

B. Rods: ASTM A 575, steel.

C. Rod Couplings: ASTM A 197, malleable iron.

D. Bolts: ASTM A 307, steel.

E. Cast-Iron Washers: ASTM A 126, gray iron.

F. Concrete Reaction Backing: Portland cement concrete mix, 3000 psi.

1. Cement: ASTM C 150, Type I.

2. Fine Aggregate: ASTM C 33, sand.

3. Coarse Aggregate: ASTM C 33, crushed gravel.

4. Water: Potable.

2.11 IDENTIFICATION

A. Metallic-Lined Plastic Underground Warning Tapes: Detectable polyethylene plastic tape with metallic

core, 6 inches wide by 4 mils thick, solid blue in color with continuously printed caption in black letters

"CAUTION - WATER LINE BURIED BELOW."

2.12 ALARM DEVICES

A. Supervisory Switches: Single pole, double throw; designed to signal valve in other than fully open

position. UL 753, FM approved, of type and sizes to mate and match piping and equipment.

2.13 BACKFLOW PREVENTERS




A. General: Backflow preventers and procedures shall be in accordance with the City of Greensboro Cross-

Connection, Backflow and Back-Siphonage Control Water System Policy.

B. Reduced Pressure (RP or RPZ) Backflow Preventers – ¾” thru 2”: ASSE 1013, AWWA C511, CSA B64

Certified and USC Foundation for Cross Connection Control and Hydraulic Research approved with full

port, resilient seated ball valve shut-off valves and ball valve test cocks. Include 2 spring loaded, center

stem guided check valves and one hydraulically dependent differential relief valve.

C. Reduced Pressure Detector Assembly (RPDA) Backflow Preventers – 2-1/2” thru 10”: ASSE 1047, USC

Foundation for Cross Connection Control and Hydraulic Research approved, FM approved and UL listed,

with OS&Y gate valves on inlet and outlet, and strainer on inlet. Include test cocks and pressure-

differential relief valve with ASME A112.1.2 air gap fitting located between 2 positive-seating check

valves and test cocks, and bypass with diplacement-type water meter, valves, and reduced pressure

backflow preventer, for continuous-pressure application. Assembly shall be of a compact design utilizing

a flow orientation of inlet flow vertical up, outlet flow vertical down at the direct outlet of the gate valves.

Wilkins Model 475DA or approved equal. Gate valves on backflow preventers on fire protection systems

shall be equiped with supervisiory switches.

2.14 PROTECTIVE ENCLOSURES

A. General: Manufactured, ASSE 1060 certified, weather-resistant enclosure designed to protect

aboveground water piping equipment or specialties. Enclosures shall be sized as required for access and

service of protected unit. Enclosures for compact design backflow preventors shall be no larger than

64”(L)x60”(W)x60”(H) Enclosures shall be as manufactured by Hot Box or approved equal.

1. Housing: Reinforced-aluminum or reiforced-fiberglass construction with factory applied paint.

Paint color to be selected by Designer from manufacturer’s standard color choices. Unpainted

aluminum exterior will not be allowed.

2. Drain openting: Sized to alleviate a full release by the backflow preventer.

3. Access doors with locking device.

4. Insulation inside housing.

5. Thermostatically controlled electric heater (for 2-1/2” or larger backflow preventers) or plug-

connected self-limiting temperature control pipe heating cable (for 2” and smaller backflow

preventors) and connection to power supply. Heating equipment shall be designed and furnished

by the enclosure manufacturer.

6. Concrete base slab: 4 inch thick of dimensions required to extend at least 6 inches beyond edges of

housing. Provide PVC sleeves at pipe penetrations of slab.

7. Anchoring devices to attach housing to base with stainless steel mouting hardware.

PART 3 - EXECUTION

3.1 GENERAL

A. All construction shall conform to the requirements of the City of Greensboro and the NCDOT as

applicable in addition to the requirements state herein.

3.2 EARTHWORK

A. Excavation, trenching, and backfilling are specified in Division 31 Section "Earth Moving."

3.3 SERVICE ENTRANCE PIPING

A. Extend water system piping and connect to water supply source and building water distribution and fire

protection systems in locations and pipe sizes indicated.




1. Terminate domestic water system piping at 5-feet outside building wall until building water

systems are installed. Terminate piping with caps, plugs, or other fittings as required for piping

material. Make connections to building water system when those systems are installed.

2. Terminate fire protection water system 12-in above finish floor elevation within building with

caps, plugs, or flanges as required for piping material. Coordinate exact locaiton with fire

protection contractor. Install restrained joints for buried piping within 60 inches of building. Use

restrained-joint pipe and fittings, thrust blocks, anchors, tie-rods and clamps, and other supports at

vertical and horizontal offsets.

3.4 JOINT CONSTRUCTION

A. Ductile-Iron Piping Gasketed Joints: Construct joints according to AWWA C600.

B. Flanged Joints: Align flanges and install gaskets. Assemble joints by sequencing bolt tightening. Use

lubricant on bolt threads.

3.5 PIPING SYSTEMS - COMMON REQUIREMENTS

A. General Locations and Arrangements: Drawings indicate general location and arrangement of piping

systems. Indicated locations and arrangements were used to size pipe and calculate friction loss,

expansion, pump sizing, and other design considerations. Install piping as indicated except where

deviations to layout are approved on coordination drawings.

B. Install piping at indicated slope.

C. Install components having pressure rating equal to or greater than system operating pressure.

D. Install piping free of sags and bends.

E. Locate groups of pipes parallel to each other, spaced to permit valve servicing.

F. Install fittings for changes in direction and branch connections.

G. Piping Connections: Except as otherwise indicated, make piping connections as specified below.

1. Install unions, in piping 2 inches and smaller, adjacent to each valve and at final connection to

each piece of equipment having 2-inch or smaller threaded pipe connection.

2. Install flanges, in piping 2-1/2 inches and larger, adjacent to flanged valves and at final connection

to each piece of equipment having flanged pipe connection.

3. Install dielectric fittings to connect piping of dissimilar metals.

3.6 PIPING INSTALLATION

A. Water Main Connection: Tap water main with size and in location as indicated according to requirements

of water utility. Obtain all required tap, right-of-way, pavement cut, and/or other permits prior to

beginning construction.

1. Install tapping sleeve and tapping valve according to manufacturer's installation instructions.

2. Install tapping sleeve on pipe to be tapped. Position flanged outlet for gate valve.

3. Install gate valve onto tapping sleeve. Comply with AWWA C600. Install valve with stem

pointing up and with cast-iron valve box.




4. Use tapping machine compatible with valve and tapping sleeve; cut hole in main. Remove tapping

machine and connect water service piping.

5. Install service clamps and corporation stops in size, quantity, and arrangement required by utility

company standards and according to manufacturer's installation instructions.

6. Install service clamps on pipe to be tapped. Position outlet for corporation stop.

7. Install corporation stops into service clamps. Install valve with stem pointing up and with cast-iron

valve box.

8. Install curb stop in service piping with head pointing up and with cast-iron service box.

9. Install manifold for multiple taps in water main.

10. Use drilling machine compatible with service clamp and corporate stop. Drill hole in main.

Remove drilling machine and connect water service piping.

B. Comply with requirements of NFPA 24 for materials and installation.

C. Install ductile-iron pipe and ductile-iron and cast-iron fittings according to AWWA C600.

D. Install copper tube and wrought-copper fittings according to CDA No. 404/0 "Copper Tube Handbook."

E. Bury piping at minimum depth of 48 inches below finished grade and not less than 18 inches below

average local frost depth.

F. Tunneling: Install pipe under streets or other obstructions that cannot be disturbed by tunneling, jacking,

or a combination of both.

G. Shoring or bracing of pits, trenches and other excavations shall be in accordance with the requirements of

NCDOT and OSHA.

H. The subgrade at the bottom of the trench shall be shaped to secure uniform support throughout the length

of the pipe. A space shall be excavated under the bell of each pipe to provide space to relieve bearing

pressure on the bell and provide room to adequately make the joint.

I. Open ends of pipe shall be plugged with a standard plug or cap at all times when pipe laying is not in

progress. Trench water shall not be permitted to enter pipe.

J. Backfill material shall be free from stones greater than 4-inches in diameter, construction material debris,

frozen material, organic matter, or unstable material. Backfill materials shall be placed in loose lifts of 8-

inches or less in depth. All backfill shall be compaced to not less than 95% of the standard Proctor

maximum dry density except the final foot beneath pavement or slab areas where this requirement shall be

increased to 98% of the standard Proctor maximum dry density.

K. Install and test fire protection piping and appurtenances in accordance with the specific requirements of

the City of Greensboro and applicable NFPA requirements.

3.7 ANCHORAGE INSTALLATION

A. Anchorages: Install anchorages for tees, plugs and caps, bends, crosses, valves, and hydrant branches.

Include anchorages for the following piping systems:

1. Gasketed-Joint, Ductile-Iron Piping: According to AWWA C600.

2. Fire Service Piping: According to NFPA 24.

B. Apply full coat of asphalt or other acceptable corrosion-retarding material to surfaces of installed ferrous

anchorage devices.




3.8 FIRE HYDRANT INSTALLATION

A. Install fire hydrants as indicated on the Drawings.

3.9 ROUGHING-IN FOR WATER METERS

A. Install rough-in piping and specialties for water meter installation as indicated on the Drawings and

according to the City of Greensboro’s requirements. Meter to be installed by City personel.

3.10 PIT CONSTRUCTION AND INSTALLATION

A. Construct pits of poured-in-place concrete or provide precast concrete pits of dimensions indicated, with

access frame and cover, ladder, and drain. Include sleeves with waterproof mechanical sleeve seals for

pipe entry and exit.

B. Connect area drain outlet to storm drain

3.11 FIRE DEPARTMENT CONNECTION INSTALLATION

A. Install fire department connections in locations indicated in accordance with NFPA 14 and 24.

B. Install wafer check valve with ball drip valve at each fire department connection. Install concrete or cast

iron vault set on #57 washed stone at wafer check valve.

C. Orient nozzles of FDC toward vehicle travelway.

C. Install signage out of pedestrian and vehicle travelways near FDC. Front of sign to face primary vehicle

travelway.

3.12 IDENTIFICATION INSTALLATION

A. Install continuous plastic underground warning tape during back-filling of trench for underground water

service piping. Locate 6 inches to 8 inches below finished grade, directly over piping.

B. Attach nonmetallic piping label permanently to main electrical meter panel.

3.13 ALARM DEVICE INSTALLATION

A. Comply with NFPA 24 for devices and methods of valve supervision.

B. Supervisory Switches: Supervise valves in open position.

1. Valves: Grind away portion of exposed valve stem. Bolt switch, with plunger in stem depression,

to OS&Y gate-valve yoke.

2. Indicator Posts: Drill and thread hole in upper-barrel section at target plate. Install switch, with

toggle against target plate, on barrel of indicator post.

C. Connect alarm devices to building fire alarm system. Wiring and fire-alarm devices are specified in

Division 13.

3.14 FIELD QUALITY CONTROL

A. Piping Tests: Water mains shall be tested in the following general sequence:




1. Flush the main per AWWA C651 (ensure minimum velocity of 2.5-fps during flushing);

2. Perform hydrostatic tests;

3. Introduce the appropriate amount of chlorine by tapping the main;

4. Hold chlorine solution in main;

5. Flush the main AWWA C651 (ensure minimum velocity of 2.5-fps during flushing);

6. Sample and perform bacteriological tests;

7. Backfill pipe.

B. All tests shall be performed under the observation of the City of Greensboro Inspector.

C. Only potable water shall be used.

D. Hydrostatic Tests: Test at a pressure of 150-psi at the lowest elevation of the line for 2 hours. The test

pressure shall be maintained during the duration of the test by use of a by-pass pumping system.

1. All main installations shall be pressure tested between each main line valve in accordance with

AWWA C600, Section 4 for ductile iron pipe and AWWA C605 for PVC pipe. The test shall be

performed using a suitable pump and an accurate pressure gauge. Immediately upon completion of

a section of main, 150 psi (+/- 5 psi) of pressure shall be applied and held for 2 hours. The

acceptable leakage rate shall not exceed the following limits per 1,000 feet of pipe per 2 hours.

Pipe Size (in) Allowable Leakage (gal)

4 0.73

6 1.11

8 1.47

10 1.84

12 2.21

2. Failure of the water main to comply with the above acceptable leakage rate, shall require the

contractor to replace any defective materials to insure a watertight installation. After any

inadequacies have been corrected, the leakage rate shall again be tested. The test shall be repeated

until that portion of the main is brought into compliance with the permissible leakage rate. All re-

testing shall be performed at no additional cost to the Owner.

E. Private Fire Service System Flushing & Testing: Perform flushing and all tests as required by NFPA 14

and NFPA 24. Contractor is responsible for performing and coordinating fire system installation and

testing in accordance with the requirements of the City of Greensboro.

1. Complete and submit “Contractor’s Material and Test Certificate for Underground Piping” (NFPA

14) upon satisfactory completion of system flushing and all tests.

F. Chlorination

1. All additions or replacements to the water system, including fire lines and backflow prevention

devices, shall be chlorinated prior to being placed into service. Such chlorination shall be

performed under the observation of a City of Greensboro Inspector.

2. Pipe subjected to contaminating materials shall be treated as directed by the Engineer. Should

such treatment fail to cleanse the pipe, replacement shall be required. The Owner and Engineer

shall bear no portion of any cost sustained by the contractor in meeting this specification.

3. Chlorination of a completed line shall be carried out after completing the pressure test and in the

following manner:




a. Tap will be made at the control valve at the upstream end of the line and at all extremities

of the line including valves. These taps shall be located in such a manner as to allow high

test hypoclorite (HTH) solution to be fed into all parts of the line.

b. A solution of water containing HTH (65%) available chlorine shall be intoduced into the

line by regulated pumping at the control valve tap. The solution shall contain such a

concentration of HTH that wikk produce a uniform concentration of 100-ppm total chlorine

immediately after chlorination. The chart below shows the required quantity of 65% HTH

compound to be contained in the solution in each 1000-foot section of line to produce the

desired concentration of 100-ppm.

Pipe Size

(in)

Lbs. of HTH (65%)

Per 1000-ft of Pipe

4 0.84

6 1.88

8 3.35

10 5.70

12 7.53

c. The HTH solution shall be circulated in the main by opening the control valve and

systematically manipulating hydrants and taps at the line extremities. The HTH solution

must be pumped in at a constant rate for each discharge rate in order that a uniform

concentration will be produced in the mains.

d. Service lines shall be sterilized by methods acceptable to the City of Greensboro and the

Engineer, and the contractor shall have the same responsibility for the laterals as for mains

in regard to bearing the full cost of any corrective measures needed to comply with

bacteriological or other requirements.

e. The HTH solution shall remain in lines for no less thatn 24-hours.

f. Extreme care shall be exercised at all times to prevent the HTH solution from entering

existing mains.

F. Bacteriological Sampling

1. Free residual chlorine after 24-hours shall be at least 10 ppm, or the lines shall be re-chlorinated

and re-tested at no additional cost to the Owner.

2. Flushing of lines in accordance with AWWA C651 may proceed after 24-hours of chlorination,

provided free residual chlorine analysis is satisfactory. Flushing shall be continued until a check

shows that the lines contain only the normal chlorine residual. Sufficient precautions shall be

taken to the satisfaction of the inspector to ensure that the impact of the water is absorbed and the

water is conveyed without erosion or property damage.

3. Samples for bacteriological analysis shall be collected for each section of pipe between main line

valves in the presence of the City of Greensboro or the Enginner after flushing is completed. The

contractor shall furnish such assistance as may be required to secure the samples.

4. In the event that two successive bacteriologic tests fail, that section of the main shall be re-

chlorinated by the contractor and new tests performed prior to moving to the next section of main.

Re-chlorination and re-testing shall be performed at no additional cost to the Owner.

5. At the satisfactory completion of the bacteriological testing, the line shall be placed into service

under the supervision of the Engineer. All valves shall be fully opened, and the Engineer shall

report each valve placed into service to the Utilities Maintenance Division where a permanent

record will be kept of the number of valve stem turns.

G. Backflow Prevention Device Certification

1. All new backflow prevention devices shall be tested and certified by a inspector approved by the

City of Greensboro prior to operation of the water system. Performance, coordination and




submittal of documentation of the testing and certification shall be the responsibility of the

Contractor.

3.15 BACKFLOW PREVENTER INSTALLATION

A. Install backflow preventers of type, size, and capacity indicated. Include valves and test cocks. Install

according to plumbing and health department authorities having jurisdiction.

B. Do not install bypass around backflow preventer.

C. Do not install reduced-pressure-principle-type in pit.

D. Support backflow preventers, valves, and piping on 3000-psi minimum, portland-cement-mix concrete

piers.

E. Contractor shall contract with qualified personel to perform and provide certification of installed backflow

prevention devices.

END OF SECTION