1、07-11 05 12 00 - 1 0SECTION 05 12 00 STRUCTURAL STEEL FRAMING SPEC WRITER NOTE: Delete between / -/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION: This section specifies structural ste
2、el shown and classified by Section 2, Code of Standard Practice for Steel Buildings and Bridges. 1.2 RELATED WORK: A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES. B. Painting: Section 09 91 00, PAINTING. C. Steel Joist: Section 05 21 00, STEEL
3、JOIST FRAMING. D. Steel Decking: Section 05 31 00, STEEL DECKING. E. Composite Steel Deck: Section 05 36 00, COMPOSITE METAL DECKING. F. Fireproofing: Section 07 81 00, APPLIED FIREPROOFING. SPEC WRITER NOTE: AISC has a certification program in effect that confirms that a certified structural steel
4、fabricating plant has the procedures and commitment to produce fabricated steel of the required quality for a given category of structural steel framing. Consider deleting the category certification if there is a minimal amount of steel on the job. Categories are Sbd: Simple steel building structure
5、s, and Cbd: Complex steel building structures. 1.3 QUALITY ASSURANCE: A. Fabricator and erector shall maintain a program of quality assurance in conformance with Section 8, Code of Standard Practice for Steel Buildings and Bridges. Work shall be fabricated in an AISC certified Category / Conventiona
6、l Steel Structures / Complex Steel Building Structures / fabrication plant. B. Before authorizing the commencement of steel erection, the controlling contractor shall ensure that the steel erector is provided with the written notification required by 29 CFR 1926.752. Provide copy of this notificatio
7、n to the Resident Engineer. 1.4 TOLERANCES: Fabrication tolerances for structural steel shall be held within limits established by ASTM A6, by Section 7, Code of Standard Practice for Buildings and Bridges, and by Standard Mill Practice - General Provided by IHSNot for ResaleNo reproduction or netwo
8、rking permitted without license from IHS-,-,-07-11 05 12 00 - 2 Information (AISC ASD Manual, Ninth Edition, Page 1-145 / LRFD Manual, Second Edition, Page 1-183 /), except as follows: A. Elevation tolerance for column splice points at time member is erected is 10 mm (3/8 inch). B. Elevation toleran
9、ce for top surface of steel beams and girders at connections to columns at time floor is erected is 13 mm (1/2 inch). C. Elevation tolerance for closure plates at the building perimeter and at slab openings prior to concrete placement is 6 mm (1/4 inch). 1.5 DESIGN: A. Connections: Design and detail
10、 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 the details shown on the Drawings, supplementing where necessary. The details shown on the Drawings are conceptual and d
11、o 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 Resident Engineer of any location where the
12、 connection design criteria is not clearly indicated. The design of all connections is subject to the review and acceptance of the Resident Engineer. Submit structural calculations prepared and sealed by a qualified engineer registered in the state where the project is located. Submit calculations f
13、or review before preparation of detail drawings. /B. Cooling Tower Supports: Unless otherwise shown on the Contract Documents, the design, location, and dimensions of cooling tower supports are based upon a typical installation. Contractor shall furnish and install at no additional cost to the Gover
14、nment, adequate structural supports for equipment furnished for this installation. Design shall be based on loads supplied by the Cooling Tower Manufacturer and must include an allowance for wind and other lateral loads. Submit detailed drawings and design calculations, prepared by a registered Prof
15、essional Engineer, for approval before members are fabricated. / 1.6 REGULATORY REQUIREMENTS: A. AISC: Specification for Structural Steel Buildings - Allowable Stress Design. / LRFD Specification for Structural Steel Buildings. / B. AISC: Code of Standard Practice for Steel Buildings and Bridges. 1.
16、7 SUBMITTALS: A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Shop and Erection Drawings: Complete C. Certificates: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 12 00 - 3 1. Structural steel. 2.
17、 Steel for all connections. 3. Welding materials. 4. Shop coat primer paint. D. Test Reports: 1. Welders qualifying tests. E. Design Calculations and Drawings: 1. Connection calculations, if required. /2. Cooling Tower Supports: If not designed on the Structural Drawings/. F. Record Surveys. 1.8 APP
18、LICABLE PUBLICATIONS: A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by basic designation only. B. American Institute of Steel Construction (AISC): 1. Specification for Structural Steel Buildings - Allowable Stress Design and
19、Plastic Design (Second Edition, 2005) 2. Load and Resistance Factor Design Specification for Structural Steel Buildings (Second Edition, 1995) 3. Code of Standard Practice for Steel Buildings and Bridges (2010). C. American National Standards Institute (ANSI): B18.22.1-65(R2008) . Plain Washers B18.
20、22M-81(R2000) Metric Plain Washers D. American Society for Testing and Materials (ASTM): A6/A6M-09 Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling A36/A36M-08 Standard Specification for Carbon Structural Steel A53/A53M-10 Standard Sp
21、ecification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless A123/A123M-09 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products A242/A242M-04(R2009) . Standard Specification for High-Strength Low-Alloy Structural Steel A283/A283M-03(R2007) .
22、Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates A307-10 Standard Specification for Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 12 00 - 4 A325-
23、10 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength A490-10 Standard Specification for Heat-Treated Steel Structural Bolts 150 ksi Minimum Tensile Strength A500/A500M-10 Standard Specification for Cold Formed Welded and Seamless Carbon Steel Stru
24、ctural Tubing in Rounds and Shapes A501-07 Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing A572/A572M-07 Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel A992/A992M-06 Standard Specification for Structural Steel Shapes E.
25、 American Welding Society (AWS): D1.1/D1.1M-10 Structural Welding Code-Steel F. Research Council on Structural Connections (RCSC) of The Engineering Foundation: Specification for Structural Joints Using ASTM A325 or A490 Bolts G. Military Specifications (Mil. Spec.): MIL-P-21035 Paint, High Zinc Dus
26、t Content, Galvanizing, Repair H. Occupational Safety and Health Administration (OSHA): 29 CFR Part 1926-2001 Safety Standards for Steel Erection PART 2 - PRODUCTS 2.1 MATERIALS: A. Structural Steel: ASTM / A36, / A242, / A283, / A572, Grade / A992 /. B. Structural Tubing: ASTM A500, Grade B. C. Str
27、uctural Tubing: ASTM A501. D. Steel Pipe: ASTM A53, Grade B. E. Bolts, Nuts and Washers: 1. High-strength bolts, including nuts and washers: ASTM / A325 / A490 /. 2. Bolts and nuts, other than high-strength: ASTM A307, Grade A. 3. Plain washers, other than those in contact with high-strength bolt he
28、ads and nuts: ANSI Standard B18.22.1. F. Zinc Coating: ASTM A123. G. Galvanizing Repair Paint: Mil. Spec. MIL-P-21035. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 12 00 - 5 PART 3 - EXECUTION 3.1 CONNECTIONS (SHOP AND FIELD): A. Welding:
29、 Welding in accordance with AWS D1.1. 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. B. High-Strength Bolts: High-strength bolts tightened to a bolt tension not less than proof load giv
30、en in Specification for Structural Joints Using ASTM A325 or A490 Bolts. Tightening done with properly calibrated wrenches, by turn-of-nut method or by use of direct tension indicators (bolts or washers). Tighten bolts in connections identified as slip-critical using Direct Tension Indicators or the
31、 turn-of-the-nut method. Twist-off torque bolts are not an acceptable alternate fastener for slip critical connections. 3.2 FABRICATION: Fabrication in accordance with Chapter M, Specification for Steel Buildings - Allowable Stress Design and Plastic Design / Load and Resistance Factor Design. / 3.3
32、 SHOP PAINTING: A. General: Shop paint steel with primer in accordance with Section 6, Code of Standard Practice for Steel Buildings and Bridges. B. Shop paint for steel surfaces is specified in Section 09 91 00, PAINTING. C. Do not apply paint to following: 1. Surfaces within 50 mm (2 inches) of jo
33、ints to be welded in field. 2. Surfaces which will be encased in concrete. 3. Surfaces which will receive sprayed on fireproofing. 4. Top flange of members which will have shear connector studs applied. /D. Structural steel in the interstitial space that does not receive sprayed on fireproofing shal
34、l be painted with primer in accordance with general requirement of shop painting. / E. Zinc Coated (Hot Dip Galvanized) per ASTM A123 (after fabrication): Touch-up after erection: Clean and wire brush any abraded and other spots worn through zinc coating, including threaded portions of bolts and wel
35、ds and touch-up with galvanizing repair paint. 3.4 ERECTION: A. General: Erection in accordance with Section 7, Code of Standard Practice for Steel Buildings and Bridges. B. Temporary Supports: Temporary support of structural steel frames during erection in accordance with Section 7, Code of Standar
36、d Practice for Steel Buildings and Bridges. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 12 00 - 6 3.5 FIELD PAINTING: A. After erection, touch-up steel surfaces specified to be shop painted. After welding is completed, clean and prime ar
37、eas not painted due to field welding. B. Finish painting of steel surfaces is specified in Section 09 91 00, PAINTING. 3.6 SURVEY: Upon completion of finish bolting or welding on any part of the work, and prior to start of work by other trades that may be supported, attached, or applied to the struc
38、tural steel work, submit a certified report of survey to Resident Engineer for approval. Reports shall be prepared by Registered Land Surveyor or Registered Civil Engineer as specified in Section 01 00 00, GENERAL REQUIREMENTS. Report shall specify that location of structural steel is acceptable for plumbness, level and alignment within specified tolerances specified in the AISC Manual. - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
