9 VA 051200 STRUCTURAL STEEL FRAMING 673-23-104.docx

Install Fall Protection Anchorage and Guardrails for Bldg 1 and 2 Project: 673-23-104

SECTION 05 12 00

STRUCTURAL STEEL FRAMING

GENERAL

SUMMARY

Section Includes:

Structural steel shapes, plates, and bars.

Structural pipe.

Bolts, nuts, and washers.

RELATED REQUIREMENTS

Materials Testing and Inspection During Construction: Section 01 45 29, TESTING LABORATORY SERVICES.

Roof Decks Framing: Section 03 51 16, GYPSUM CONCRETE ROOF DECKS.

Floor Decks Framing: Section 03 55 11, GYPSUM CONCRETE FLOOR DECKS.

Steel Joist: Section 05 21 00, STEEL JOIST FRAMING.

Steel Decking: Section 05 31 00, STEEL DECKING.

Composite Steel Deck: Section 05 36 00, COMPOSITE METAL DECKING.

Fireproofing: Section 07 81 00, APPLIED FIREPROOFING.

Steel Framing: Section 13 34 19, METAL BUILDING SYSTEMS.

Steel Finishes: Section 09 06 00, SCHEDULE FOR FINISHES.

Steel Support: Section 10 13 00, DIRECTORIES.

Painting: Section 09 91 00, PAINTING.

Steel Piles: Section 31 62 00, DRIVEN PILES.

APPLICABLE PUBLICATIONS

Comply with references to extent specified in this section.

American Institute of Steel Construction (AISC):

AISC Manual - Steel Construction Manual, 14th Ed.

30310 - Code of Structural Steel Buildings and Bridges.

36010: Specification for Structural Steel Buildings.

The American Society of Mechanical Engineers (ASME):

B18.22.109 - Washers: Helical SpringLock, Tooth Lock, and Plain Washers.

American Welding Society (AWS):

D1.1/D1.1M15 - Structural Welding Code - Steel.

ASTM International (ASTM):

A6/A6M14 - General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling.

A36/A36M14 - Carbon Structural Steel.

A53/A53M12 - Pipe, Steel, Black and HotDip, ZincCoated, Welded and Seamless.

A123/A123M15 - Zinc (HotDip Galvanized) Coatings on Iron and Steel Products.

A242/A242M13 - HighStrength LowAlloy Structural Steel.

A283/A283M13 - Low and Intermediate Tensile Strength Carbon Steel Plates.

A30714 - Carbon Steel Bolts, Studs, and Threaded Rod 60,000 PSI Tensile Strength.

A500/A500M13 - ColdFormed Welded and Seamless Carbon Steel Structural Tubing and Rounds and Shapes.

A501/A501M14 - HotFormed Welded and Seamless Carbon Steel Structural Tubing and Rounds and Shapes.

A572/A572M15 - HighStrength LowAlloy ColumbiumVanadium Structural Steel.

A992/A992M15 - Structural Shapes.

F2329/F2329M15 - Zinc Coating, HotDip, Requirements for Application to Carbon and Alloy steel Bolts, Screws, washers, Nuts, and Special Threaded Fasteners.

F3125/F3125M-15 - Standard Specification for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) Minimum Tensile Strength, Inch and Metric Dimensions Master Painters Institute (MPI):

No. 18 - Primer, Zinc Rich, Organic.

Military Specifications (Mil. Spec.):

MILP21035 - Paint, High Zinc Dust Content, Galvanizing, Repair.

Occupational Safety and Health Administration (OSHA):

29 CFR 1926.752(e) - Guidelines For Establishing The Components Of A SiteSpecific Erection Plan.

29 CFR 19262001 - Safety Standards for Steel Erection.

Research Council on Structural Connections (RCSC) of The Engineering Foundation:

Specification for Structural Joints Using ASTM F3125 Bolts.

SUBMITTALS

Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Submittal Drawings:

Show size, configuration, and fabrication and installation details.

Sustainable Construction Submittals:

Recycled Content: Identify postconsumer and preconsumer recycled content percentage by weight.

Test Reports: Certify products comply with specifications.

Welders' qualifying tests.

Certificates: Certify each product complies with specifications.

Structural steel.

Steel connections.

Welding materials.

Shop coat primer paint.

Qualifications: Substantiate qualifications comply with specifications.

Fabricator with project experience list.

Installer with project experience list.

Welders and welding procedures.

Delegated Design Drawings and Calculations: Signed and sealed by responsible Architect/Engineer.

Connection calculations.

Record Surveys: Signed and sealed by responsible surveyor or engineer.

QUALITY ASSURANCE

Fabricator Qualifications: AISC Quality Certification participant designated as AISC Certified Plant, Category STD.

Regularly fabricates specified products.

Fabricated specified products with satisfactory service on five similar installations for minimum five years.

Installer Qualifications: AISC Quality Certification Program participant designated as AISCCertified Erector, Category ACSE.

Regularly installs specified products.

Installed specified products with satisfactory service on five similar installations for minimum five years.

Before commencement of Work, ensure steel erector provides written notification required by OSHA 29 CFR 1926.752(e). Submit a copy of the notification to Contracting Officer's Representative.

Welders and Welding Procedures Qualifications: AWS D1.1/D1.1M.

WARRANTY

Construction Warranty: FAR clause 52.24621, "Warranty of Construction."

PRODUCTS

SYSTEM PERFORMANCE

Delegated Design: Prepare submittal documents including design calculations and drawings signed and sealed by registered design professional, licensed in state where project is located.

Design structural steel framing connections complying with specified performance:

Load Capacity: Resist full capacity of supported framing member. Account for connection and member loads and eccentricities.

Request additional design criteria when necessary to complete connection design.

Configuration: Design and detail all connections for each member size, steel grade and connection type to resist the loads and reactions indicated on the drawings or specified herein. Use details consistent with details shown on drawings, supplementing where necessary. The details shown on drawings are conceptual and do not indicate the required weld sizes or number of bolts unless specifically noted. Use rational engineering design and standard practice in detailing, accounting for all loads and eccentricities in both the connection and the members. Promptly notify the Contracting Officer Representative of any location where the connection design criteria is not clearly indicated. The design of all connections is subject to the review and acceptance of the Contracting Officer's Representative. Submit structural calculations prepared and sealed by a qualified engineer registered in the state where the project is located. Submit calculations for review before preparation of detail drawings.

MATERIALS

WShapes:

ASTM A992/A992M.

ASTM A572/A572M; Grade 65.

ASTM A529; Grade 55.

SShapes:

ASTM A36/A36M.

ASTM A572/A572M; Grade 65.

ASTM A529; Grade 55.

Channel and Angles:

ASTM A36/A36M.

ASTM A572/A572M; 65.

ASTM A529; Grade 55.

Plates and Bars:

ASTM A36/A36M.

ASTM A572/A572M; Grade 65.

ASTM A529; Grade 55.

Hollow Structural Sections:

ASTM A500/A500M.

ASTM A501/A501M.

Structural Pipe: ASTM A53/A53M, Grade B.

Bolts, Nuts and Washers: Galvanized for galvanized framing.

Highstrength bolts, including nuts and washers: ASTM F3125.

Bolts and nuts, other than highstrength: ASTM A307, Grade A.

Plain washers, other than those in contact with highstrength bolt heads and nuts: ASME B18.22.1.

Welding Materials: AWS D1.1, type to suit application.

PRODUCTS - GENERAL

Basis of Design: Section 09 06 00, SCHEDULE FOR FINISHES.

FABRICATION

Fabricate structural steel according to Chapter M, AISC 360.

Shop and Field Connections:

Weld connections according to AWS D1.1/D1.1M. Welds shall be made only by welders and welding operators who have been previously qualified by tests as prescribed in AWS D1.1 to perform type of work required.

HighStrength Bolts: Highstrength bolts tightened to a bolt tension minimum 70 percent of their minimum tensile strength. Tightening done with properly calibrated wrenches, by turnofnut method or by use of direct tension indicators (bolts or washers). Tighten bolts in connections identified as slipcritical using Direct Tension Indicators. Twistoff torque bolts are not an acceptable alternate fastener for slip critical connections.

FINISHES

Shop Priming:

Prime paint structural steel according to AISC 303, Section 6.

Interstitial Space Structural Steel: Prime paint, unless indicated to receive sprayed on fireproofing.

Shop Finish Painting: Apply primer and finish paint as specified in Section 09 91 00, PAINTING.

Do not paint:

Surfaces within 50 mm (2 inches) of field welded joints.

Surfaces indicated to be encased in concrete.

Surfaces receiving sprayed on fireproofing.

Beam top flanges receiving shear connector studs applied.

Structural Steel Galvanizing: ASTM A123/A123M, hot dipped, after fabrication. Touchup after erection: Clean and wire brush any abraded and other spots worn through zinc coating, including threaded portions of bolts and welds and touchup with galvanizing repair paint.

Galvanize structural steel framing installed at exterior locations.

Bolts, Nuts, and Washers Galvanizing: ASTM F2329, hotdipped.

ACCESSORIES

General: Shop paint steel according to AISC 303, Section 6.

Finish Paint System: Primer and finish as specified in Section 09 91 00, PAINTING.

Galvanizing Repair Paint: MPI No. 18.

EXECUTION

ERECTION

Erect structural steel according to AISC 303 and AISC 360.

Set structural steel accurately at locations and elevations indicated on drawings.

Maintain erection tolerances of structural steel within AISC 303 requirements.

Pour Stop Elevation Tolerance: 6 mm (1/4 inch), maximum, before concrete placement.

Weld and bolt connections as specified for shop connections.

FIELD PAINTING

After welding, clean and prime weld areas to match adjacent finish.

Touchup primer damaged by construction operations.

Apply galvanizing repair paint to galvanized coatings damaged by construction operations.

Finish Painting: As specified in Section 09 91 00, PAINTING.

FIELD QUALITY CONTROL

Record Survey:

Engage registered land surveyor or registered civil engineer as specified in Section 01 00 00, GENERAL REQUIREMENTS to perform survey.

Measure and record structural steel framing plumbness, level, and alignment after completing bolting and welding and before installation of work supported by structural steel.

Identify deviations from allowable tolerances specified in AISC Manual.

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