division 05 metals · astm f1852 standard specification for “twist off” type tension control...

DIVISION 05

METALS

SDG 16086 West Bolivar High School Cafeteria 23 March 2018 Rosedale, Mississippi

100% Construction Documents STRUCTURAL STEEL FRAMING 051200 – Page 1 of 8

SECTION 051200: STRUCTURAL STEEL FRAMING PART 1 GENERAL 1.1 RELATED SECTIONS A. Division 1 Sections B. Section 052100 – Steel Joist Framing. C. Section 053100 – Steel Decking. 1.2 REFERENCES AISC – Steel Construction Manual, 14th Edition. AISC 303 – Code of Standard Practice for Steel Buildings and Bridges. AISC 341-10 – Seismic Provisions for Structural Steel Buildings dated June 22, 2010. AISC 360-10 – Specification for Structural Steel Buildings. AISC – Specification for Structural Joints Using ASTM A325 or A490 Bolts prepared by the

Research Council on Structural Connections. AWS D1.1 – Structural Welding Code. AWS A5.1 – Specification for Carbon Steel Electrodes for Shielded Metal Arc Welding. AWS A5.5 – Specification for Low-Alloy Steel Electrodes for Shielded Metal Arc Welding. AWS A5.17 – Specification for Carbon Steel Electrodes and Fluxes for Submerged Arc Welding. AWS A5.20 – Carbon Steel Electrodes for Flux Cored Arc Welding. SSPC – Steel Structures Painting Manual. ASTM A6 – Standard Specification for General Requirements for Rolled Structural Steel Bars,

Plates, Shapes, and Sheet Piling. ASTM A36 – Standard Specification for Carbon Structural Steel. ASTM A53 – Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded

and Seamless ASTM A108 – Standard Specification for steel Bar, Carbon and Alloy, Cold-Finished. ASTM A123 – Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel

Products.



ASTM A153 – Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware. ASTM A307 – Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod

60,000 PSI Tensile Strength. ASTM A325 – Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 KSI

Minimum Tensile Strength. ASTM A490 – Standard Specification for Structural Bolts, Alloy Steel, Heat-Treated, 150 KSI

Minimum Tensile Strength. ASTM A500 – Standard Specification for Cold-Formed Welded and Seamless Carbon Steel

Structural Tubing in Rounds and Shapes. ASTM A501 – Standard Specification for Hot-Formed Welded and Seamless Carbon Steel

Structural Tubing. ASTM A563 – Standard Specification for Carbons and Alloy Steel Nuts ASTM A572 – Standard Specification for High-Strength Low-Alloy Columbium Vanadium

Structural Steel.

ASTM A673 – Standard Specification for Sampling Procedure for Impact Testing of Structural Steel

ASTM A780 – Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip

Galvanized Coatings. ASTM A992 – Standard Specification for Structural Steel Shapes. ASTM A1085 – Standard Specification for Cold-Formed Welded Carbon Steel Hollow Structural

Sections (HSS) ASTM B695 – Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and

Steel ASTM F436 – Standard Specification for Hardened Steel Washers. ASTM F844 – Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General

Use. ASTM F1554 – Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-Ksi Yield

Strength. ASTM F1852 – Standard Specification for “Twist Off” Type Tension Control Structural

Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. ASTM F2280 – Standard Specification for “Twist Off” Type Tension Control Structural

Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 150 ksi Minimum Tensile Strength.



1.3 SUBMITTALS A. Refer to Structural Quality Assurance Plan in the Structural Drawings for additional submittal

requirements. B. Shop Drawings:

1. Contact Structural Engineer’s Construction Administrator prior to detailing structural steel

shop drawings. 2. Shop drawings shall be submitted on a 24” x 36” sheet minimum. 3. Shop drawings shall clearly indicate the profiles, sizes, ASTM Grade, spacing and locations

of structural steel members, including connections, attachments, anchorages, framed openings, sizes and types of fasteners, method of tightening fasteners, cambers, and the number, type and spacing of the stud shear connectors and headed studs.

4. Beam sizes shall be shown on the erection drawings (plans). 5. Submit shop drawings for review. 6. Reproduction of Structural Drawings for shop drawings is not permitted. Electronic drawing

files will not be provided to the Contractor. C. Maintain at construction office written welding procedures for each type of welded joint used in

accordance with AWS D1.1.

D. Submit certification that the fabricator meets the required qualifications and ultrasonic testing reports for complete penetration welds. If fabricator has an independent testing agency inspect fabrication as required by these specifications, submit the name and qualifications of the independent testing agency.

E. Upon request, submit the erection sequence and procedures to be used by the steel erector. 1.4 QUALITY ASSURANCE

A. Refer to the Structural Quality Assurance Plan in the Structural Drawings. 1.5 STORAGE A. Store materials off ground to permit easy access for inspection and identification. Store steel

members and packaged items in a manner that provides protection against contact with deleterious materials.

1.6 FABRICATOR'S QUALIFICATIONS

A. Steel fabricator shall meet the requirements in the Structural Quality Assurance Plan in the Structural Drawings.



PART 2 PRODUCTS 2.1 ANCHOR RODS A. Anchor Rods: Headed rod or a threaded rod with a heavy hexagonal nut and plate washer

welded to the bottom of the threaded rod conforming to ASTM F1554. B. Nuts and Washers: Two hexagonal nuts and two plate washers conforming to ASTM A36 for

each anchor rod assembly. 2.2 ROLLED STEEL SHAPES, PLATES, AND BARS A. Rolled Steel Shapes, Plates, and Bars: ASTM A36; ASTM A572, Grade 50; or ASTM A992 as

indicated by the Structural Drawings. ASTM A572, Grade 50 may be substituted for ASTM A992. 2.3 SQUARE, RECTANGULAR AND ROUND STEEL HOLLOW STRUCTURAL SECTIONS (HSS)

A. Hollow structural sections: ASTM A1085, 50 ksi minimum yield strength. 2.4 PIPE STEEL STRUCTURAL SECTIONS A. Pipe Structural Sections: ASTM A53, Gr. B, 35 ksi minimum yield strength. 2.5 NON-HIGH-STRENGTH FASTENERS A. Non-High-Strength Bolts: ASTM A307, Grade A, 60 ksi minimum, where noted on the Structural

Drawings. B. Hardened Steel Washers: ASTM F436. 2.6 HIGH-STRENGTH FASTENERS A. High-Strength Bolts: ASTM A325 or ASTM A490 as noted on the Structural Drawings. 3/4-inch

minimum diameter. B. Hardened steel washers shall conform to ASTM F436. C. Spline-Type Tension Control Bolts: ASTM spline-type tension control bolts with plain hardened

washers and suitable nuts are an acceptable alternate design bolt assembly. D. Do not use load indicating washers. 2.7 EXPANSION ANCHORS A. Expansion Anchors: See Structural Notes.



2.8 ADHESIVE ANCHORS A. Adhesive Anchors: See Structural Notes. 2.9 SCREW ANCHORS A. Screw Anchors: See Structural Notes. 2.10 HEADED STUDS A. Headed Studs: ASTM A108, comply with AWS D1.1. Provide studs with the diameter shown on

the Structural Drawings. 2.11 WELD ELECTRODES A. Weld Electrodes: AWS A5.1, A5.5, A5.l7, or A5.20 E-70 series low hydrogen electrodes. 2.12 PAINT A. Oxide Primer: AISC Specifications, Code of Standard Practice, and SSPC Steel Structure

Painting Manual, unless indicated otherwise. B. Paint Primer: Free of lead and chromate and comply with State and Federal volatile organic

compound (VOC) requirements. C. Paint Primer: Compatible with finish coating. 2.13 GALVANIZE A. Galvanized Coating: ASTM A123. B. Galvanize Bolts, Nuts, and Washers: ASTM A153 when used to connect steel members that are

specified to be galvanized. C. Expansion Anchors, Adhesive Anchors, or Screw Anchors: Where specified to be galvanized,

anchors shall be mechanically galvanized in accordance with ASTM B695, Class 65, Type I. PART 3 EXECUTION 3.1 GENERAL A. Fabricate and erect structural steel in accordance with AISC Specifications and Code of Standard

Practice. B. Notify Architect/Structural Engineer and Structural Testing/Inspection Agency at least 48 hours

prior to structural steel fabrication and erection.



3.2 ANCHOR ROD SETTING A. Provide templates for setting anchor rods. Position anchor rods by using templates with two nuts

to secure in place prior to placement of concrete. B. Do not erect steel where anchor rod nuts will not have full threads. 3.3 CONNECTIONS A. Provide a minimum of two fasteners at each bolted connection. B. Ensure fasteners are lubricated prior to installation. C. Provide high-strength bolted connections in accordance with AISC Specifications for Structural

Joints using ASTM A325 or A490 Bolts. D. Provide connections for expansion and contraction where steel beams connect to concrete walls

or concrete columns and at expansion joints. Secure nuts on bolts against loosening. (Dent threads with a chisel.)

3.4 FASTENER INSTALLATION A. Bolts shall be installed in holes of the connection and brought to snug tight condition. Tighten

connection progressing systematically from the most rigid part to the free edges of the connection to minimize relaxation of the bolts.

B. High-strength bolts installed shall have a hardened washer under the element turned in

tightening. C. Installation and tightening of bolts shall conform to the AISC Specifications for Structural Joints. 3.5 EXPANSION ANCHOR INSTALLATION A. Install in accordance with manufacturer's recommendation and the ICC ESR report for the

particular anchor used. B. Minimum Embedment: See Structural Notes on Drawings. 3.6 ADHESIVE ANCHOR INSTALLATION A. Install in accordance with manufacturer's recommendation and the ICC ESR or IAPMO-UES

report for the particular anchor used. B. Minimum Embedment: See Structural Notes on Drawings.



3.7 SCREW ANCHOR INSTALLATION A. Install in accordance with manufacturer's recommendation and the ICC ESR report for the

particular anchor used. B. Minimum Embedment: See Structural Notes on Drawings. 3.8 HEADED STUDS A. Headed studs shall be installed in accordance with AWS D1.1 with the resulting in-place length

after burn-off as shown on the Structural Drawings. B. Do not locate headed studs closer than 1-1/4 inches from the edge of embedded steel member to

the centerline of the stud. C. Remove ceramic arc shields after welding studs. 3.9 WELDING A. Comply with AWS D1.1. Use prequalified weld procedures. B. Provide end returns where fillet welds terminate at ends or sides. Returns shall be continuous for

a distance of not less than two times the nominal size of the weld. C. Complete penetration joints shall be backgouged to sound metal before the second side is

welded or have 1/4-inch root opening with 3/16 x 1 inch backing bar. Access holes are required. Filling access holes is not required.

D. Remove all slag and weld splatter from deposited weld metal. 3.10 SPLICING A. Splice members only where indicated unless authorized in writing by Structural Engineer. B. Provide shim plates at bottom flange splice at continuous beam splices with different depths. 3.11 CUTTING A. Do not use flame cutting to correct errors unless authorized in writing. B. Re-entrant corners shall have a minimum radius of one inch and be free of notches. Notches and

gouges resulting from flame cutting shall be finished to a smooth appearance. 3.12 MILL SCALE A. Remove loose mill scale.



3.13 BOLT HOLES A. Cut, drill, or punch holes perpendicular to metal surfaces. Do not enlarge holes by burning. Drill

or punch holes in bearing plates. Remove burrs. 3.14 PAINTING A. Paint steel that is not encased in concrete, plaster, or sprayed fireproofing. Do not shop paint in

areas to be field welded, contact surfaces of slip critical connections, or areas to receive special finishes.

B. Field paint as required steel that has been welded or that is unpainted after connections have

been tightened. 3.15 GALVANIZING A. Galvanize shelf angles that support the exterior building veneer, for example brick shelf angles. B. Galvanize environmentally exposed steel, for example mechanical equipment supports. C. Touch-up welds and abrasions in galvanized members in accordance with ASTM A780. END OF SECTION 051200


100% Construction Documents STEEL JOIST FRAMING 052100 – Page 1 of 5

SECTION 052100: STEEL JOIST FRAMING PART 1 GENERAL 1.1 SECTION INCLUDES A. Section includes the design, manufacture, and erection of steel joists shown in the Structural

Drawings. 1.2 RELATED SECTIONS A. Division 1 Sections B. Section 051200 – Structural Steel Framing. C. Section 053100 – Steel Decking. 1.3 REFERENCES ASTM A307 – Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile

Strength. AWS D1.1 – Structural Welding Code. OSHA – Safety and Health Regulations for Construction, Steel Erection, Open Web Steel Joists,

Part 1926.757. SJI – Standard Specifications for Open Web Steel Joists, K-Series. SSPC – Paint 15 Steel Joist Shop Primer. VULCRAFT – Specifications for Vulcraft Super Longspan Steel Joists, SLH-Series. 1.4 DESIGN REQUIREMENTS A. Steel joists and bridging shall be designed by a Structural Engineer licensed in the project state in

accordance with the Steel Joist Institute (SJI) Standard Specifications. B. Refer to Structural Drawings for special design requirements, if any. 1.5 SUBMITTALS A. Refer to Structural Quality Assurance Plan in the Structural Drawings for additional submittal

requirements. B. Shop Drawings:

1. Shall include the following:



a. Plan of joist layout showing mark, number, type, location, bracing, and spacing of joists. b. Connection and seat details. c. Bridging requirements.

2. Shall be signed and sealed by an Engineer licensed in the Project state. C. Upon request, submit the erection sequence and procedures to be used by the steel erector. 1.6 QUALITY ASSURANCE

A. Refer to the Structural Quality Assurance Plan in the Structural Drawings.

1.7 QUALIFICATIONS A. Manufacturer shall be a member of the Steel Joist Institute. 1.8 DELIVERY, STORAGE, AND HANDLING A. Store and handle joists as recommended in SJI Standard Specifications. PART 2 PRODUCTS 2.1 ROLLED STEEL PLATES, SHAPES, AND BARS A. Steel: Steel in accordance with SJI Standard Specifications. 2.2 UNFINISHED BOLTS, WASHERS, AND NUTS A. Unfinished Bolts: ASTM A307, Grade A, 60 ksi minimum tensile strength. Provide compatible

hexagonal nuts and plain washers. 2.3 WELD ELECTRODES A. Weld Electrodes: E-70 series low hydrogen electrodes conforming to AWS A5.1 or A5.5, A5.17

or A5.20. B. Provide proper storage for electrodes to maintain flux quality. 2.4 PAINT A. Primer shall conform to Steel Structures Painting Council Specification SSPC – Paint 15.



PART 3 EXECUTION 3.1 MANUFACTURE AND ERECTION A. Manufacture and erect joists in accordance with SJI Standard Specifications and OSHA Steel

Erection Standards. B. Members shall have parallel top and bottom chords unless otherwise indicated. C. Provide for connections of kickers and hangers to members. D. Provide bottom chord extensions at columns and as indicated by the Construction Drawings.

Weld bottom chords to members after dead loads have been applied. E. Provide ceiling extensions in areas having ceilings attached directly to joist bottom chord (not

suspended ceilings). Extend ends to within 1/2 inch of the finished wall surface unless otherwise indicated.

F. Camber joists according to recommendations in the SJI Standard Specifications, unless noted

otherwise on Structural Drawings. Negative camber and bent joists are unacceptable. G. Do not erect joists until supporting work is secured. H. Provide bridging complying with SJI Standard Specifications. Provide for connections where

bridging terminates. 3.2 CONCENTRATED LOADS ON JOISTS A. Do no place concentrated loads on the joists that are not shown in the Structural Drawings

without receiving written consent from the steel joist manufacturer. Reinforcement required for concentrated loads applied to either the top or bottom chord shall be designed by joist manufacturer.

3.3 HEADER UNITS A. Provide header units to support openings in floor or roof system not framed with steel shapes. 3.4 SHOP PAINTING A. Remove loose scale, heavy rust, and other foreign materials from joists and accessories before

application of shop paint. B. Apply one shop coat of steel joist primer paint to joists and accessories, by spray, dipping, or

other method to provide a continuous dry paint film thickness of not less than 1.50 mil.



3.5 BEARING A. Extend ends of steel joists not less than 4 inches over masonry and concrete supports. Extend

ends of joists not less than 2½ inches over steel supports. Positive attachment to support shall be made by welding or bolting. In such cases where a shorter end bearing length must be used, such condition must be designed.

B. Fabricate sloped bearing seats where indicated on Drawings or where slope of joist exceeds ¼

inch per foot. 3.6 WELDING A. Perform welding in accordance with AWS D1.1 "Structural Welding Code". Use AWS Certified

Welders. B. Weld ends of joists resting on steel supports with the minimum weld specified by the SJI standard

specifications, unless otherwise indicated in the Structural Drawings. C. Remove all slag and weld splatter from deposited weld material. 3.7 BRIDGING INSTALLATION A. Permanently fasten bridging before the application of loads. Secure to steel beams or CMU walls

where possible; otherwise terminate bridging with X-bracing to joists top chord. B. In areas where joists will be exposed to view, align bridging in straight rows to create uniform

appearance. 3.8 PROTECTION A. Provide means for adequate distribution of concentrated loads so that carrying capacity of joists

is not exceeded during construction. B. Provide temporary bridging, bracing, connections, and anchors to ensure lateral stability during

construction. C. Joists damaged during construction shall be replaced or repaired with procedures submitted by

the joist manufacturer. 3.9 CUTTING A. Do not field cut or apply heat to joists unless authorized in writing.



3.10 REPAIRS OR MODIFICATIONS A. If a steel joist is damaged or its bearing condition must be modified, Contractor shall have the

joist supplier provide a sketch showing the required repairs or modifications. END OF SECTION 052100


100% Construction Documents STEEL DECKING 053100 – Page 1 of 4

SECTION 053100: STEEL DECKING PART 1 GENERAL 1.1 RELATED SECTIONS A. Division 1 Sections B. Section 051200 – Structural Steel Framing. C. Section 052100 – Steel Joist Framing. 1.2 REFERENCES AISI – Specifications for the Design of Cold-Formed Steel Structural Members. AWS D1.1 – Structural Welding Code. AWS A5.5 – Specifications For Low Alloy Steel Covered Arc-Welding. SDI 31 – Design Manual for Composite Decks, Form Decks, and Roof Decks SDI RDCH1 – Roof Deck Construction Handbook SDI DDMO3 – Diaphragm Design Manual, Third Edition ASTM A653 – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron

Alloy-Coated (Galvannealed) by the Hot-Dip Process. ASTM A1008 – Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-

Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable.

1.3 SUBMITTALS A. Notify the Structural Engineer prior to detailing shop drawings. B. Submit detailed shop drawings showing layout and types of deck panels, weld sizes, weld

patterns and conditions requiring closure panels, supplementary framing, sump pans, cant strips, cut openings, special jointing or other accessories.

C. Submit manufacturer’s information including section properties, deck gage, material yield

strength, etc. for each type of steel deck required. The submittal shall demonstrate that the deck complies with the minimum section and material properties indicated in the structural notes and this Specification.

D. Submit supporting documentation and manufacturer’s information for deck that does not comply

with the minimum section and material properties specified. Deck shall be designed for the design criteria outlined herein and the submittal shall be stamped and signed by an Engineer licensed in the project state.



E. Upon request, submit mill certification that the steel supplied meets these Specifications. F. Upon request, submit written welding procedures. G. Submit manufacturer's certification of compliance with supplementary framing, sump pans, cant

strips, curb openings, special jointing and other accessories. 1.4 QUALITY ASSURANCE

A. Refer to the Structural Quality Assurance Plan in the Structural Drawings. B. Welders shall be certified by AWS for the welding process involved. C. Fire Rated Assemblies: For steel decking that is a part of a specified fire rated assembly, identify

steel deck bundles with labels bearing the U.L. mark. 1.5 STORAGE A. Store materials off ground to permit easy access for inspection and identification. Store steel

members and packaged items in a manner that provides protection against contact with deleterious materials.

PART 2 PRODUCTS

2.1 GENERAL A. Provide steel deck sheets of three spans minimum wherever possible. 2.2 DECK ATTACHMENT A. Use E-60 series electrodes conforming to AWS A5.5. B. Provide weld washers for material thinner than 22 gage. 2.3 ROOF DECK A. Roof Deck: Steel sheets, minimum yield strength of 33,000 pounds per square inch, ASTM

A653, Grade 33 or higher, deck types and gages as indicated on Drawings. B. Finish: Galvanized, G60 coating. 2.4 ROOF SUMP PANS A. Roof Sump Pans: Single piece of 14 gage galvanized sheet steel with level bottoms and sloping

sides to direct water flow to drain, when required by Architect. Size to receive roof drains and with bearing flanges not less than 3 inches wide



PART 3 EXECUTION 3.1 GENERAL A. Installer must examine the areas and conditions under which metal decking is to be installed and

notify the Contractor in writing of conditions detrimental to the proper and timely completion of the work. Do not proceed with the Work until unsatisfactory conditions have been corrected in a manner acceptable to the Installer.

B. Steel deck shall be installed in accordance with the approved shop drawings, requirements of the

Steel Deck Institute, the manufacturer’s recommendations, and any applicable regulatory, safety guidelines.

3.2 PLACEMENT A. Place steel deck units on supporting steel framework and adjust to final position before

permanently fastening. Install deck units and accessories in accordance with manufacturer's recommendations and the Drawings, and as specified herein.

3.3 CUTTING A. Cut holes in deck indicated by the Drawings. Other holes required shall be supplied by those

requiring them. Obtain written authorization for additional holes and cutting not indicated on erection drawings.

3.4 WELDING A. Perform welding in accordance with AWS Structural Welding Code. B. Install weld washers for deck thinner than 22 gage. 3.5 CONCENTRATED LOADS A. Concentrated loads suspended from the steel deck shall not exceed 50 pounds. No more than

one suspended load shall be located in the sheet width in any span. 3.6 DECK SUPPORTS A. Fasten deck to steel framework at ends and at each intermediate support by welding according to

manufacturer's specifications unless indicated otherwise on structural drawings or otherwise specified herein. Do not weld deck in place until all bolted and welded connections for the structural frame are complete. A minimum of one floor over the area to be decked is to be bolted and welded prior to welding deck in place.



3.7 ROOF DECK A. Place roof deck in straight alignment. Lap ends of sheets two inches. B. Attach side laps of roof deck with screws spaced at a maximum of 24 inches on center for spans

greater than 4 feet unless shown otherwise on the Drawings. C. Weld roof deck in place by welding with 5/8-inch puddle welds spaced 12 inches on center at

each support, unless shown otherwise by the Drawings. 3.8 ROOF SUMP PANS A. Recess pans not less than 1½ inches below roof deck surface, unless otherwise shown or

required by deck configuration. Holes for drains will be cut in the field.

END OF SECTION 053100

D|B 16086 West Bolivar High School Cafeteria 23 March 2018 Rosedale, Mississippi

100% Construction Documents METAL FABRICATIONS 055000 - Page 1 of 13

SECTION 055000 - METAL FABRICATIONS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Steel framing and supports for overhead doors and grilles. 2. Steel framing and supports for mechanical and electrical equipment. 3. Steel framing and supports for applications where framing and supports are not specified

in other Sections. 4. Shelf angles. 5. Metal ladders. 6. Metal floor plate and supports. 7. Miscellaneous steel metal trim including steel angle corner guards, steel edgings and

loading-dock edge angles. 8. Loose bearing and leveling plates for applications where they are not specified in other

Sections. 9. Steel handrail systems.

B. Products furnished, but not installed, under this Section:

1. Loose steel lintels. 2. Anchor bolts, steel pipe sleeves, slotted-channel inserts, and wedge-type inserts

indicated to be cast into concrete or built into unit masonry. 3. Steel weld plates and angles for casting into concrete for applications where they are not

specified in other Sections.

C. Related Sections:

1. Division 03 Section "Cast-in-Place Concrete" for installing anchor bolts, steel pipe sleeves, slotted-channel inserts, wedge-type inserts, and other items cast into concrete.

2. Division 04 Section "Unit Masonry" for installing loose lintels, anchor bolts, and other items built into unit masonry.

3. Division 05 Section "Structural Steel Framing." for structural-steel framing system components.

4. Division 06 Sections “Rough Carpentry” for metal framing anchors and timber connectors.

1.3 PERFORMANCE REQUIREMENTS

A. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes acting on exterior metal fabrications by preventing buckling, opening of joints, overstressing of components, failure of connections, and other detrimental effects.



1. Temperature Change: 120 deg F, ambient; 180 deg F, material surfaces.

1.4 SUBMITTALS

A. Shop Drawings: Detail fabrication and erection of each metal fabrication indicated. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items. Show fabrication and installation details for metal fabrications.

1. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items. Provide templates for anchors and bolts specified for installation under other Sections.

B. Samples for Verification: For each type and finish of extruded nosing and tread.

1.5 QUALITY ASSURANCE

A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Welding Qualifications: Qualify procedures and personnel according to the following:

1. AWS D1.1/D1.1M, "Structural Welding Code - Steel." 2. AWS D1.2/D1.2M, "Structural Welding Code - Aluminum." 3. AWS D1.6, "Structural Welding Code - Stainless Steel."

1.6 PROJECT CONDITIONS

A. Field Measurements: Where metal fabrications are indicated to fit walls and other construction, verify dimensions by field measurements before fabrication and indicate measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work. Verify actual locations of walls and other construction contiguous with metal fabrications by field measurements before fabrication. 1. Established Dimensions: Where field measurements cannot be made without delaying

the Work, establish dimensions and proceed with fabricating metal fabrications without field measurements. Coordinate construction to ensure that actual dimensions correspond to established dimensions. Allow for trimming and fitting.

1.7 COORDINATION

A. Coordinate selection of shop primers with topcoats to be applied over them. Comply with paint and coating manufacturers' written recommendations to ensure that shop primers and topcoats are compatible with one another.

B. Coordinate installation of anchorages for metal fabrications and steel weld plates and angles for casting into concrete. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete or masonry. Deliver such items to Project site in time for installation.



PART 2 - PRODUCTS

2.1 METALS, GENERAL

A. Metal Surfaces, General: Provide materials with smooth, flat surfaces unless otherwise indicated. For metal fabrications exposed to view in the completed Work, provide materials with smooth, flat surfaces without blemishes. Do not use materials with exposed pitting without seam marks, roller marks, rolled trade names, or roughness, blemishes.

2.2 FERROUS METALS

A. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M.

B. Rolled-Steel Floor Plate: ASTM A 786/A 786M, rolled from plate complying with ASTM A 36/A 36M or ASTM A 283/A 283M, Grade C or D.

C. Steel Tubing: ASTM A 500, cold-formed steel tubing.

D. Steel Pipe: ASTM A 53/A 53M, standard weight (Schedule 40) unless another weight is indicated or required by structural loads. otherwise indicated.

E. Cast-in-place Anchors in Concrete: Anchors of type indicated below, fabricated from corrosion-resistant materials capable of sustaining, without failure, the load imposed within a safety factor of 4, as determined by testing per ASTM E 488, conducted by a qualified independent testing agency.

1. Threaded or wedge type; galvanized ferrous castings, either ASTM A 47 (ASTMA 47M malleable iron or ASTM A 27/1 27M cast steel. Provide bolts, washers, and shims as needed, hot-dip galvanized per ASTM A 153/A 153M.

F. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

G. Slotted Channel Framing: Cold-formed metal box channels (struts) complying with MFMA-4.

1. Size of Channels: As indicated. 2. Material: Galvanized steel, ASTM A 653/A 653M. 3. Material: Cold-rolled steel, ASTM A 1008/A 1008M.

H. Cast Iron: Either gray iron, ASTM A 48/A 48M, or malleable iron, ASTM A 47/A 47M, unless otherwise indicated.

2.3 PAINT

A. Shop Primer for Ferrous Metal: Fast-curing, lead-and chromate-free, universal modified-alkyd primer complying with performance requirements in FS TT-P-664; selected for good resistance to normal atmospheric corrosion, compatibility with finish paint systems indicated, and capability to provide a sound foundation for field-applied topcoats despite prolonged exposure.

B. Galvanizing Repair Paint: High-zinc-dust-content paint for regalvanizing welds in steel, complying with SSPC-Paint 20.



C. Bituminous Paint: Cold-applied asphalt mastic complying with SSPC-Paint 12, except containing no asbestos fibers, or cold-applied asphalt emulsion complying with ASTM D 1187.

2.4 NONFERROUS METALS

A. Aluminum Plate and Sheet: ASTM B 209, Alloy 6061-T6.

B. Aluminum Extrusions: ASTM B 221, Alloy 6063-T6.

C. Aluminum-Alloy Rolled Tread Plate: ASTM B 632/B 632M, Alloy 6061-T6.

D. Aluminum Castings: ASTM B 26/B 26M, Alloy 443.0-F.

E. Bronze Plate, Sheet, Strip, and Bars: ASTM B 36/B 36M, Alloy UNS No. C28000 (muntz metal, 60 percent copper).

F. Bronze Extrusions: ASTM B 455, Alloy UNS No. C38500 (extruded architectural bronze).

G. Bronze Castings: ASTM B 584, Alloy UNS No. C83600 (leaded red brass) or No. C84400 (leaded semired brass).

2.5 FASTENERS

A. General: Unless otherwise indicated, provide Type 304 stainless-steel fasteners for exterior use and zinc-plated fasteners with coating complying with ASTM B 633 or ASTM F 1941, Class Fe/Zn 5, at exterior walls. Select fasteners for type, grade, and class required.

1. Provide stainless-steel fasteners for fastening aluminum. 2. Provide stainless-steel fasteners for fastening stainless steel. 3. Provide stainless-steel fasteners for fastening nickel silver. 4. Provide bronze fasteners for fastening bronze.

B. Steel Bolts and Nuts: Regular hexagon-head bolts, ASTM A 307, Grade A; with hex nuts, ASTM A 563; and, where indicated, flat washers.

C. Steel Bolts and Nuts: Regular hexagon-head bolts, ASTM A 325, Type 3; with hex nuts, ASTM A 563, Grade C3; and, where indicated, flat washers.

D. Stainless-Steel Bolts and Nuts: Regular hexagon-head annealed stainless-steel bolts, ASTM F 593; with hex nuts, ASTM F 594; and, where indicated, flat washers; Alloy Group 1.

E. Anchor Bolts: ASTM F 1554, Grade 36, of dimensions indicated; with nuts, ASTM A 563; and, where indicated, flat washers.

1. Hot-dip galvanize or provide mechanically deposited, zinc coating where item being fastened is indicated to be galvanized.

F. Eyebolts: ASTM A 489.

G. Machine Screws: ASME B18.6.3.

H. Lag Bolts Screws: ASME B18.2.1.



I. Wood Screws: Flat head, carbon steel, ASME B18.6.1.

J. Plain Washers: Round, carbon steel, ASME B18.22.1.

K. Lock Washers: Helical, spring type, carbon steel, ASME B18.21.1.

L. Expansion Anchors: Anchor bolt and sleeve assembly of material indicated below with capability to sustain, without failure, a load equal to six times the load imposed when installed in unit masonry and equal to four times the load imposed when installed in concrete, as determined by testing per ASTM E 488, conducted by a qualified independent testing agency.

1. Material: Carbon-steel components zinc-plated to comply with ASTM B 633, Class Fe/Zn 5.

M. Anchors, General: Anchors capable of sustaining, without failure, a load equal to six times the load imposed when installed in unit masonry and four times the load imposed when installed in concrete, as determined by testing according to ASTM E 488, conducted by a qualified independent testing agency.

N. Toggle Bolts: FS FF-B-588, tumble-wing type, class and style as needed.

O. Cast-in-Place Anchors in Concrete: Either threaded type or wedge type unless otherwise indicated; galvanized ferrous castings, either ASTM A 47/A 47M malleable iron or ASTM A 27/A 27M cast steel. Provide bolts, washers, and shims as needed, all hot-dip galvanized per ASTM F 2329.

P. Post-Installed Anchors: Torque-controlled expansion anchors or chemical anchors.

1. Material for Interior Locations: Carbon-steel components zinc plated to comply with ASTM B 633 or ASTM F 1941, Class Fe/Zn 5, unless otherwise indicated.

2. Material for Exterior Locations and Where Stainless Steel is Indicated: Alloy Group 1 stainless-steel bolts, ASTM F 593, and nuts, ASTM F 594.

Q. Slotted-Channel Inserts: Cold-formed, hot-dip galvanized-steel box channels (struts) complying with MFMA-4, 1-5/8 by 7/8 inches by length indicated with anchor straps or studs not less than 3 inches long at not more than 8 inches o.c. Provide with temporary filler and tee-head bolts, complete with washers and nuts, all zinc-plated to comply with ASTM B 633, Class Fe/Zn 5, as needed for fastening to inserts.

2.6 MISCELLANEOUS MATERIALS

A. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

B. Shop Primers: Provide primers that comply with Division 09 painting Sections.

C. Universal Shop Primer: Fast-curing, lead- and chromate-free, universal modified-alkyd primer complying with MPI#79 and compatible with topcoat.

1. Use primer containing pigments that make it easily distinguishable from zinc-rich primer.

D. Epoxy Zinc-Rich Primer: Complying with MPI#20 and compatible with topcoat.



E. Galvanizing Repair Paint: High-zinc-dust-content paint complying with SSPC-Paint 20 and compatible with paints specified to be used over it.

F. Bituminous Paint: Cold-applied asphalt emulsion complying with ASTM D 1187.

G. Nonshrink, Metallic Grout: Factory-packaged, ferrous-aggregate grout complying with ASTM C 1107, specifically recommended by manufacturer for heavy-duty loading applications.

H. Nonshrink, Nonmetallic Grout: Factory-packaged, nonstaining, noncorrosive, nongaseous grout complying with ASTM C 1107. Provide grout specifically recommended by manufacturer for interior and exterior applications.

I. Concrete: Comply with requirements in Division 03 Section "Cast-in-Place Concrete" for normal-weight, air-entrained, concrete with a minimum 28-day compressive strength of 3000 psi.

2.7 FABRICATION, GENERAL

A. Shop Assembly: Preassemble items in the shop to greatest extent possible to minimize field splicing and assembly. Disassemble units only as necessary for shipping and handling limitations. Use connections that maintain structural value of joined pieces. Clearly mark units for reassembly and coordinated installation.

B. Cut, drill, Shear and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch unless otherwise indicated. Remove sharp or rough areas on exposed surfaces.

C. Ease exposed edges to a radius of approximately 1/32 inch (1 mm), unless otherwise indicated. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work.

D. Form exposed work true to line and level with accurate angles and surfaces and straight sharp edges.

E. Weld corners and seams continuously to comply with the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. At exposed connections, finish exposed welds and surfaces smooth and blended so no

roughness shows after finishing and contour of welded surface matches that of adjacent surface.

F. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners or welds where possible. Where Use exposed fasteners of type indicated or, if not indicated, are required, use Phillips flat-head (countersunk) fasteners unless otherwise indicated. Locate joints where least conspicuous.

G. Fabricate seams and other connections that will be exposed to weather in a manner to exclude water. Provide weep holes where water may accumulate.

H. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish hardware, screws, and similar items.



I. Allow for thermal movement resulting from the following maximum change (range) in ambient and surface temperatures by preventing buckling, opening up of joints, over stressing of components, failure of connections, and other detrimental effects. Base engineering calculation on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

1. Temperature Change (Range): 120 deg F (67 deg C), ambient; 180 deg F (100 deg C), material surfaces.

J. Provide for anchorage of type indicated; coordinate with supporting structure. Fabricate and Space anchoring devices to secure metal fabrications rigidly in place and to support indicated loads.

1. Where units are indicated to be cast into concrete or built into masonry, equip with integrally welded steel strap anchors, 1/8 by 1-1/2 inches, with a minimum 6-inch embedment and 2-inch hook, not less than 8 inches from ends and corners of units and 24 inches o.c., unless otherwise indicated.

2.8 MISCELLANEOUS FRAMING AND SUPPORTS

A. General: Provide steel framing and supports that are not a part of structural-steel framework as necessary to complete the Work. not specified in other Sections as needed to complete the Work.

B. Fabricate units from structural-steel shapes, plates, and bars of welded construction unless otherwise indicated. Fabricate to sizes, shapes, and profiles indicated and as necessary to receive adjacent construction retained by framing and supports. Cut, drill, and tap units to receive hardware, hangers, and similar items.

1. Fabricate units from slotted channel framing where indicated. 2. Where units are indicated to be cast into concrete or built into masonry, equip with

integrally welded steel strap anchors 1-1/4 inches (32 mm) wide by ¼ inch (6 mm) thick by 8 inches (200 mm) long at 24 inches (600 mm) o.c., unless otherwise indicated.

3. Furnish inserts for units installed after concrete is placed.

C. Fabricate supports for operable partitions from continuous steel beams of sizes indicated with attached bearing plates, anchors, and braces as indicated. Drill or punch bottom flanges of beams to receive partition track hanger rods; locate holes where indicated on operable partition Shop Drawings.

D. Fabricate steel girders for wood frame construction from continuous steel shapes of sizes indicated.

1. Provide bearing plates welded to beams where indicated. 2. Drill or punch girders and plates for field-bolted connections where indicated. 3. Where wood nailers are attached to girders with bolts or lag screws, drill or punch holes

at 24 inches o.c.

E. Fabricate steel pipe columns for supporting wood frame construction from steel pipe with steel baseplates and top plates as indicated. Drill or punch baseplates and top plates for anchor and connection bolts and weld to pipe with fillet welds all around. Make welds the same size as pipe wall thickness unless otherwise indicated.

1. Unless otherwise indicated, fabricate from Schedule 40 steel pipe.



2. Unless otherwise indicated, provide 1/2-inch baseplates with four 5/8-inch anchor bolts and 1/4-inch top plates.

F. Galvanize miscellaneous framing and supports where indicated.

2.9 SHELF ANGLES

A. Fabricate shelf angles from steel angles of sizes indicated and for attachment to concrete framing. Provide horizontally slotted holes to receive 3/4-inch bolts, spaced not more than 6 inches from ends and 24 inches o.c., unless otherwise indicated.

1. Provide mitered and welded units at corners. 2. Provide open joints in shelf angles at expansion and control joints. Make open joint

approximately 2 inches larger than expansion or control joint.

B. For cavity walls, provide vertical channel brackets to support angles from backup masonry and concrete. Align expansion joints in angles with indicated control and expansion joints in cavity-wall exterior wythe.

C. Galvanize shelf angles located in exterior walls.

D. Furnish wedge-type concrete inserts, complete with fasteners, to attach shelf angles to cast-in-place concrete.

2.10 METAL LADDERS

A. General: Fabricate ladders for locations shown, with dimensions, spacing, details, and anchorages as indicated.

1. Comply with ANSI A14.3 unless otherwise indicated. 2. For elevator pit ladders, comply with ASME A17.1.

B. Steel Ladders:

1. Space siderails 16 inches apart unless otherwise indicated. 2. Space siderails of elevator pit ladders 12 inches apart. 3. Siderails: Continuous, 3/8-by-2-1/2-inch. 4. Rungs: 3/4-inch- diameter steel bars, spaced 12 inches (300 mm) o.c. 5. Fit rungs in centerline of siderails; plug-weld and grind smooth on outer rail faces. 6. Provide nonslip surfaces on top of each rung, either by coating rung with aluminum-oxide

granules set in epoxy-resin adhesive or by using a type of manufactured rung filled with aluminum-oxide grout.

7. Provide nonslip surfaces on top of each rung by coating with abrasive material metallically bonded to rung.

8. Provide platforms as indicated fabricated from welded or pressure-locked steel bar grating, supported by steel angles. Limit openings in gratings to no more than 1/2 inch in least dimension.

9. Support each ladder at top and bottom and not more than 60 inches o.c. with welded or bolted steel brackets. Size brackets to support design loads specified in ANSI A14.3.

10. Galvanize exterior ladders, including brackets and fasteners.



2.11 METAL FLOOR PLATE

A. Fabricate from rolled-steel floor plate of thickness indicated below:

1. Thickness: As indicated.

B. Provide grating sections where indicated fabricated from welded or pressure-locked steel bar grating. Limit openings in gratings to no more than 1/2 inch in least dimension.

C. Provide steel angle supports as indicated.

D. Include steel angle stiffeners, and fixed and removable sections as indicated.

E. Provide flush steelbar drop handles for lifting removable sections, one at each end of each section.

2.12 MISCELLANEOUS STEEL TRIM

A. Unless otherwise indicated, fabricate units from steel shapes, plates, and bars of profiles shown with continuously welded joints and smooth exposed edges. Miter corners and use concealed field splices where possible.

B. Provide cutouts, fittings, and anchorages as needed to coordinate assembly and installation with other work. Provide anchors, welded to trim, for embedding in concrete or masonry construction, spaced not more than 6 inches (150 mm) from each end, 6 inches (150 mm) from corners, and 24 inches (600 mm) o.c., unless otherwise indicated.

C. Galvanize exterior miscellaneous steel trim.

2.13 LOOSE BEARING AND LEVELING PLATES

A. Provide loose bearing and leveling plates for steel items bearing on masonry or concrete construction. Drill plates to receive anchor bolts and for grouting.

B. Galvanize plates.

2.14 LOOSE STEEL LINTELS

A. Fabricate loose steel lintels from steel angles and shapes of size indicated for openings and recesses in masonry walls and partitions at locations indicated. Fabricate in single lengths for each opening unless otherwise indicated.

B. Weld adjoining members together to form a single unit where indicated.

C. Size loose lintels to provide bearing length at each side of openings equal to 1/12 of clear span but not less than 8 inches unless otherwise indicated.

D. Galvanize loose steel lintels located in exterior walls.



2.15 STEEL WELD PLATES AND ANGLES

A. Provide steel weld plates and angles not specified in other Sections, for items supported from concrete construction as needed to complete the Work. Provide each unit with no fewer than two integrally welded steel strap anchors for embedding in concrete.

2.16 FINISHES, GENERAL

A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes.

B. Finish metal fabrications after assembly.

C. Finish exposed surfaces to remove tool and die marks and stretch lines, and to blend into surrounding surface.

2.17 STEEL AND IRON FINISHES

A. Galvanizing: Hot-dip galvanize items as indicated to comply with ASTM A 153/A 153M for steel and iron hardware and with ASTM A 123/A 123M for other steel and iron products.

1. Do not quench or apply post galvanizing treatments that might interfere with paint adhesion.

B. Shop prime iron and steel items not indicated to be galvanized unless they are to be embedded in concrete, sprayed-on fireproofing, or masonry, or unless otherwise indicated.

1. Shop prime with universal shop primer.

C. Preparation for Shop Priming: Prepare uncoated ferrous-metal surfaces to comply with minimum requirements indicated below for SSPC surface-preparation specifications and environmental exposure conditions of installed metal fabrications:

1. Exterior Items (SSPC Zone 1B): SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 2. Items Indicated to Receive Zinc-Rich Primer: SSPC-SP 6/NACE No. 3, "Commercial

Blast Cleaning." 3. Items Indicated to Receive Primers Specified in Division 09 Section "High-Performance

Coatings": SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 4. Other Items Interiors (SSPC Zone 1A): SSPC-SP 3, "Power Tool Cleaning."

D. Shop Priming: Apply shop primer to uncoated surfaces of metal fabrications, except those with galvanized finishes and those to be embedded in concrete, sprayed-on fireproofing, or masonry, unless otherwise indicated. Apply shop primer to comply with SSPC-PA 1, "Paint Application Specification No. 1: Shop, Field, and Maintenance Painting of Steel," for shop painting.

1. Stripe paint corners, crevices, bolts, welds, and sharp edges.

2.18 STAINLESS-STEEL FINISHES

A. Remove tool and die marks and stretch lines or blend into finish.



B. Grind and polish surfaces to produce uniform, directionally textured, polished finish indicated, free of cross scratches. Run grain with long dimension of each piece.

C. Bright, Directional Polish: No. 4 finish.

D. When polishing is completed, passivate and rinse surfaces. Remove embedded foreign matter and leave surfaces chemically clean.

2.19 ALUMINUM FINISHES

A. Finish designations prefixed by AA comply with the system established by the Aluminum Association for designating aluminum finishes.

B. As-Fabricated Finish: AA-M10 (Mechanical Finish: as fabricated, unspecified).

C. Class I, Clear Anodic Finish: AA-M12C22A41 (Mechanical Finish: nonspecular as fabricated; Chemical Finish: etched, medium matte; Anodic Coating: Architectural Class I, clear coating 0.018 mm or thicker) complying with AAMA 611.

PART 3 - EXECUTION

3.1 INSTALLATION, GENERAL

A. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installing metal fabrications. Set metal fabrications accurately in location, alignment, and elevation; with edges and surfaces level, plumb, true, and free of rack; and measured from established lines and levels.

B. Fit exposed connections accurately together to form hairline joints. Weld connections that are not to be left as exposed joints but cannot be shop welded because of shipping size limitations. Do not weld, cut, or abrade surfaces of exterior units that have been hot-dip galvanized after fabrication and are for bolted or screwed field connections.

C. Field Welding: Comply with the following requirements:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. At exposed connections, finish exposed welds and surfaces smooth and blended so no

roughness shows after finishing and contour of welded surface matches that of adjacent surface.

D. Fastening to In-Place Construction: Provide anchorage devices and fasteners where metal fabrications are required to be fastened to in-place construction. Provide threaded fasteners for use with concrete and masonry inserts, toggle bolts, through bolts, lag screws, wood screws, and other connectors.

E. Provide temporary bracing or anchors in formwork for items that are to be built into concrete, masonry, or similar construction.



F. Corrosion Protection: Coat concealed surfaces of aluminum that will come into contact with grout, concrete, masonry, wood, or dissimilar metals with a heavy coat of bituminous paint. the following:

1. Cast Aluminum: Heavy coat of bituminous paint. 2. Extruded Aluminum: Two coats of clear lacquer.

3.2 INSTALLING MISCELLANEOUS FRAMING AND SUPPORTS

A. General: Install framing and supports to comply with requirements of items being supported, including manufacturers' written instructions and requirements indicated on Shop Drawings, if any.

B. Anchor supports for operable partitions securely to and rigidly brace from building structure.

C. Support steel girders on solid grouted masonry, concrete, or steel pipe columns. Secure girders with anchor bolts embedded in grouted masonry or concrete or with bolts through top plates of pipe columns.

1. Where grout space under bearing plates is indicated for girders supported on concrete or masonry, install as specified in "Installing Bearing and Leveling Plates" Article.

D. Install pipe columns on concrete footings with grouted baseplates. Position and grout column baseplates as specified in "Installing Bearing and Leveling Plates" Article.

1. Grout baseplates of columns supporting steel girders after girders are installed and leveled.

3.3 INSTALLING PREFABRICATED BUILDING COLUMNS

A. Install prefabricated building columns to comply with AISC's "Specification for Structural Steel Buildings" and with requirements applicable to listing and labeling for fire-resistance rating indicated.

3.4 INSTALLING BEARING AND LEVELING PLATES

A. Clean concrete and masonry bearing surfaces of bond-reducing materials, and roughen to improve bond to surfaces. Clean bottom surface of plates.

B. Set bearing and leveling plates on wedges, shims, or leveling nuts. After bearing members have been positioned and plumbed, tighten anchor bolts. Do not remove wedges or shims but, if protruding, cut off flush with edge of bearing plate before packing with grout.

1. Use nonshrink grout, either metallic or nonmetallic, in concealed locations where not exposed to moisture; use nonshrink, nonmetallic grout in exposed locations unless otherwise indicated.

2. Pack grout solidly between bearing surfaces and plates to ensure that no voids remain.



3.5 ADJUSTING AND CLEANING

A. Touchup Painting: Immediately after erection, clean field welds, bolted connections, and abraded areas. Paint uncoated and abraded areas with the same material as used for shop painting to comply with SSPC-PA 1 for touching up shop-painted surfaces.

1. Apply by brush or spray to provide a minimum 2.0-mil dry film thickness.

B. Touchup Painting: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint are specified in Division 09 painting Sections.

C. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair galvanizing to comply with ASTM A 780.

END OF SECTION 055000