601 4th Avenue Schematic Design Project Specification March 2009 ...

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601 Fourth Avenue OUTLINE SPECIFICATION Seattle, Washington 051213 – ARCHITECTURALLY EXPOSED STRUCTURAL STEEL FRAMING 2.9 FINISHES: A. Galvanized Steel Assemblies: Shop galvanize steel and prepare ready for field painting. Page 4 of 4 PART 3 - EXECUTION 3.1 INSTALLATION A. Perform cutting, drilling, and fitting required for installing metal items. Set items accurately in location, alignment, and elevation; with edges and surfaces level, plumb, true, and free of rack. B. Touch up galvanizing of field welds. END OF SECTION 19 December, 2008 Foster + Partners
601 Fourth Avenue OUTLINE SPECIFICATION Seattle, Washington 054100 - COLD-FORMED METAL FRAMING Page 1 of 2 PART 1 - GENERAL 1.1 SECTION REQUIREMENTS A. Summary: .1 Load-bearing metal stud framing for exterior wall construction. B. Related Sections: .1 Section 092116 - Gypsum Board Assemblies for non-load-bearing metal stud framing. 1.2 SYSTEM DESCRIPTION A. Wind Pressure: Base designs on wind pressures per applicable Building Code, unless reduced pressures can be justified as with low buildings. Corner pressures are to be distributed as per the applicable Building Code. B. Differential Movements Design: Base vertical deflection gaps on the assumption that other system installations occur no sooner than 2 months after shoring is removed from concrete construction, and they are free to deflect. Provide greater clearances when earlier installation of framing is anticipated. .1 Vertical movement between any 2 floors: Allow for 1/2 inch minimum. .2 Horizontal displacement between floors: Allow for 2-3/8 inch minimum unless otherwise indicated on the Structural Engineer’s Drawings, whichever is greater. Include for maximum inelastic response displacements calculated in accordance with applicable Building Code, unless otherwise included on the Structural Engineer’s Drawings. 1.3 PERFORMANCE REQUIREMENTS A. Structural Performance: Load-bearing metal framing to be capable of withstanding out of plane design loads without deflections greater than: .1 Exterior Load-Bearing Partition Walls: Horizontal deflection of 1/240 of the wall height. 1.4 SUBMITTALS A. Product Data: For each material. B. Shop Drawings: Prepared, signed and sealed by a professional structural engineer licensed in the State of place of the Project. C. Mill certificates. D. Welder certificates. 1.5 QUALITY ASSURANCE A. Comply with AISI's "North American Specification for the Design of Cold-Formed Steel Structural Members and Commentary" for calculating structural characteristics of metal framing. B. Mill certificates signed by steel sheet producer. C. Welding: Qualify procedures and personnel according to AWS D1.1, "Structural Welding Code Steel," and AWS D1.3, “Structural Welding Code - Sheet Steel”. 19 December, 2008 Foster + Partners
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