DIVISION 5 - STRUCTURAL STEEL AND IRON WORK

Transcription

1 DIVISION 5 - STRUCTURAL STEEL AND IRON WORK SECTION STRUCTURAL METAL FRAMING PART 1.00 GENERAL 1.01 SCOPE OF WORK A. Work Included: Structural steel complete in place. Steel joists complete in place. 3. Anchor bolts Metal roof and floor decking. No prefabricated metal buildings allowed. B. Work Not Included: 1.02 QUALITY ASSURANCE 1. Miscellaneous steel. See Metal Fabrications. A. Applicable Publications 1. American Institute of Steel Construction (AISC): a. Manual of Steel Construction - 8th Edition. b. Structural Steel Detailing - 2nd Edition. 2. American Iron and Steel Institute (AISI): Cold-formed Steel Design Manual (Latest Edition). 3. American Society for Testing and Materials (ASTM): A36 A53 A32 A446 A525 Structural Steel Welded and Seamless Steel Pipe High Strength Bolts for Structural Steel Joints including Suitable Nuts and Plain Hardened Washers Steel Sheet, Zinc-Coated (galvanized) by the Hot Dip Process (structural) physical quality Steel Sheet, Zinc-Coated (Galvanized by the Hot- Dip Process, General Requirements. 4. American Welding Society (AWS): D1.1 Structural Welding Code 5. Steel Deck Institute (SDI): Basic Design Specifications. 6. Steel Joist Institute (SJI): Standard Specifications and Load Tables. 7. All of the applicable publications listed shall be in reference to the latest edition and/or amendments. PART 2.00 PRODUCTS 2.01 MATERIALS A. B. Structural steel: ASTM A36 and A53 (steel pipe) Anchor Bolts: ASTM A307 C. High Strength bolts: ASTM A325 D. E. Steel Joists and Joist Girders: ASTM A36 Steel roof deck: ASTM A446 F. Steel floor deck: ASTM A446 G. Shop painting and galvanizing 1. Structural steel and steel joists: Primer for work shall be an approved rust inhibitive primer compatible with finish paint coat Food Lion, L.L.C. Specifications 67

2 H. Paint all steel below grade with minimum 6 mils of black asphaltum STRUCTURAL STEEL A. Fabrication and erection: Fabrication and erection shall be in accordance with the "Specifications for the Design, Fabrication and Erection of Structural Steel for Buildings" of the AISC and the "AISC Code of Standard Practice". B. Connections 1. All connections shall be designed in accordance with the "Manual of Steel Construction" of the AISC. 2. All bolted connections are to be high strength bolts of size shown on drawings and installed in accordance with the AISC Specifications for Structural Joints, A All welded connections must meet the structural welding code referenced earlier. C. All shop and field welds shall be made only by certified welders as prescribed in the "Structural Welding Code" AWS D1.1. D. The Contractor alone shall be responsible for all errors of fabrication and for the correct fitting of all members. Contractor shall approve shop drawings before fabrication, paying special attention to I-beam restrictions on the plans. E. The Fabricator shall fabricate and furnish the required anchor bolts, to the job site, together with a plan showing their exact location, in sufficient time not to delay the installation of concrete foundation work. F. All edge angles to be set in concrete slab shall be galvanized. G. No deviation from column spacing shown on Food Lion, L.L.C. plans will be permitted STEEL JOISTS A. Design, fabrication and erection shall conform to the requirements of the Steel Joist Institute for open web steel joists. B. Field connections shall be welded as prescribed by the Steel Joist Institute, unless otherwise noted on plans. C. Standard accessories, including bridging of proper size and location for the type and spacing of joists, shall be as specified by the Steel Joist Institute, or as shown on plans. D. All joists shall be manufactured by one of the following: 1. A member company of the Steel Joist Institute. 2. A company (not a member of the Steel Joist Institute) must, prior to fabrication, submit to and receive approval from the Architect, the following items: a. Complete design calculations for the joist to be supplied. (Calculations must be stamped by a professional structural engineer who is registered in the state in which this is to be built.) b. Complete fabrication details, stamped by *...(See A) c. A certificate stating that the joist design materials and workmanship comply with these specifications Food Lion, L.L.C. Specifications 68

3 2.04 DECKING A. Steel roof deck shall be 1½" - 22 gauge with manufacturer's standard baked-on paint finish. Shop finish and installation shall be in strict accordance with manufacturer's specifications and the "Basic Design Specifications" of the SDI. Basic steel shall conform to ASTM A446. Deck shall be capable of supporting 50 pounds per square foot on simple span STORAGE OF MATERIAL ON SITE All material shall be delivered in good condition and shall be stored in a neat and orderly manner. If necessary, material shall be elevated to protect it from water and mud. Material shall be stored adjacent to the work as directed by the Architect/Engineer. PART 3.00 EXECUTION 3.01 INSTALLATION A. Erection of all steel work shall be true and in its designed location with members either plumb, level, or sloped as required. Temporary bracing or shoring of sufficient size and quantity shall be installed wherever necessary to permit the proper installation of the work in complete safety to all concerned and shall be left in place until the need for bracing ceases to exist. B. As joists are erected, they shall be secured to their supports by temporary or permanent connections. C. All decking shall be welded to supports by means of electric arc-welding. Welding shall be performed by certified welders. The welds shall be per SJ1 with 4 welds per sheet to each support and 1½ inch side lap welds at 36 inches on center unless otherwise noted on drawings. Perform all welding in accordance with AWS D1.1. D. Reinforce and frame all openings through roof as necessary for rigidity and load carrying capacity. All holes larger than 12 inches shall be reinforced PROTECTION Field touch-up paint: All surfaces, which show rust or damage to shop coat before finished painting has begun, shall be completely cleaned of rust, grease, dirt and other objectionable materials and repaired or spot-primed as directed. Paint shall be same as used for shop coat COORDINATION This work shall be coordinated so that all built-in, connected, and/or adjacent work on this project may be properly installed Food Lion, L.L.C. Specifications 69

4 SECTION LIGHT-GAGE FRAMING PART 1.00 GENERAL 1.01 Related work specified elsewhere. A. Section 05100, Structural Steel B. Section 09150, Gypsum Drywall 1.02 Quality Assurance A. Welders Qualifications: Refer to Section Submittals A. Shop Drawings: 1. Shop and field assembly details, including cuts and connections. 2. Types and locations of welds, rivets, bolts, and fastening devices. PART 2.00 PRODUCTS 2.01 Materials A. All interior light-gage metal framing and accessories shall be 25 gauge minimum and all exterior light-gage metal framing and accessories shall be 18 gauge minimum unless otherwise noted and shall be of the type, size, and spacing shown on the drawings. B. All structural members shall be designed in accordance with American Iron and Steel Institute (AISI) "Specification For the Design of Cold-Formed Steel Structural Members," 1980 edition. C. All interior framing members used for load bearing interior and exterior walls and non-load bearing curtain walls, shall be SJ studs and CR runners. (20 gauge min.) D. All screws, bolts, and fasteners shall be as recommended by framing manufacturer. E. Studs and runners from one manufacturer cannot be mixed with studs and runners from another manufacturer until the structural properties of the studs are compared. PART 3.00 EXECUTION 3.01 A. Erect lightgage metal framing in accordance with manufacturer's instructions and reviewed shop drawings. B. Clean surfaces, which will be in contact after assembly. C. Position members plumb, square, and true to line. D. Hold members firmly in position until permanently fastened. E. Prefabricated panels shall be square, with components attached in a manner as to prevent racking and to minimize distortion while lifting. F. All framing components shall be cut squarely for attachment to perpendicular members, or as required, for an angular fit against abutting members Food Lion, L.L.C. Specifications 70

5 G. Axially loaded studs shall be installed in a manner which will assure that their ends are positioned against the inside of runner web prior to fastening. H. Insulation equal to that specified elsewhere shall be provided in all doubled jamb studs and doubled headers not accessible to insulation contractors. I. Fastening of components shall be with self-drilling screws or welding. Screws shall be of sufficient size to insure the strength of the connection. Wire tying of components shall not be permitted. All welds shall be touched up with a zincrich paint. J. Metal furring on sales area walls to have at least one horizontal run at the lower edge to block air flow behind the drywall Food Lion, L.L.C. Specifications 71

6 SECTION METAL FABRICATIONS PART 1.00 GENERAL 1.01 SCOPE OF WORK A. Work included 1.02 QUALITY ASSURANCE All miscellaneous steel and metal work as shown and detailed on the drawings and as specified herein, including, but not limited to, the following: Loose lintels and loose bolts. Clip angles and other loose steel shapes, including sheet steel Anchors, anchor bolts, and concrete inserts. Setting compound for railings. 5. Metal stairs and railings Metal ladders. Column, beams, hangers, etc., required to support mechanical equipment and mechanical/electrical center. 8. Guard posts and guard rails. A. Applicable Publications 1. American Institute of Steel Construction (AISC): Manual of Steel Construction - 8th Edition 2. American Society for Testing and Materials (ASTM) A27 A36 A32 Mild-to-Medium Strength Carbon-Steel Castings for General Application Structural Steel High-Strength Bolts for Structural Steel Joints including Suitable Nuts and Plain Hardened Washers 3. American Welding Society (AWS): D1.1 Structural Welding Code 4. All of the applicable publications listed shall be in reference to the latest edition and/or amendment. PART 2.00 PRODUCTS 2.01 MATERIALS A. Materials: 1. Stock materials, patterns, products and standard methods of fabrication will be approved, provided they comply with these specifications and drawings. 2. Paint for priming steel and iron work concealed from view shall be red lead or red oxide. Primer for steel and iron exposed to view shall be approved rust inhibitive primer (not red lead). 3. All non-ferrous materials shall have non-ferrous screws, bolts, anchors, fasteners, accessories, etc., of the same material. B. Loose lintels, loose bolts, clip angles and other loose steel shapes, anchors, anchor bolts, etc., shall be of sizes, shapes and weights shown on the drawings or as otherwise required when not shown. C. Steel shall conform to ASTM Specification A36 for structural steel and A27 for cast steel. Architectural and miscellaneous steel not otherwise specified shall be mild steel Food Lion, L.L.C. Specifications 72

7 D. Steel Shapes Furnish and install all lightweight structural steel shapes to be used as lintels, ladders, railings, pit covers, anchors, clips, clip angles, etc., not otherwise furnished under another division of the specifications, whether or not implied by the drawings. E. Anchoring/setting compound for pipe railings, anchor bolts or other fixtures in concrete should have a 7 day compressive strength of 5,000 psi similar or equal to: "Thorogrip" as manufactured by Thoro System Products or equal made by Master Builders or Thoro System Products. PART 3.00 EXECUTION 3.01 INSTALLATION A. All work shall be installed in strict accordance with printed directions and recommendations of the manufacturer and in accordance with the best practice and workmanship. All exposed welds shall be ground smooth. B. All work shall be installed by skilled mechanics COORDINATION WITH OTHER TRADES 3.03 PROTECTION The work described in this Section shall be carefully coordinated with all related adjacent or connected work of this contract. A. The work described in this division, except where noted otherwise, shall receive a shop applied priming coat of paint before delivery to the job. Do not prime galvanized material. B. All surfaces which show rust or damage to shop coat (before finish painting has begun) shall be completely cleaned of rust, grease, dirt, etc., and reprimed or spot-primed as directed. C. The contractor shall protect all materials from damage until acceptance of job by the Owner. Any materials which become damaged shall be replaced as directed by Architect-Engineer or Food Lion, L.L.C Food Lion, L.L.C. Specifications 73