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2.Metal framing shall be zinc coated in conformance to requirements of ASTM A926, G60.

3.Metal framing shall be manufactured in conformance to ASTM C645.

4.Install metal framing according to ASTM C1007, Standard Specification for Installation of Load-Bearing (Transverse and Axial) Steel Studs and Related Accessories.

B.Studs: SSMA, ICBO ER-4943P, minimum yield 33 ksi, hot-dipped galvanized or electro galvanized sheet steel, G-60, C Stud type, punched web (except tracks and joists), C-shaped, sizes required to conform to details and scheduled wall thicknesses.  Studs shall be rolled from new steel sheet and shall not be produced from re-rolled steel.  Stud flanges shall not be less than 1-5/16 inch wide; track flanges, not less than 1-1/4 inch wide.

1.Wall Framing and Furring for Plaster and Mortar Beds: Studs and tracks shall be 18 gage minimum, unless otherwise indicated.

2.Wall Framing and Furring for Gypsum Wallboard: Studs and tracks shall be 20 gage minimum, unless otherwise indicated.

3.Load-Bearing Studs: Studs and members thicker than 18 gage (0.0438 inch) shall conform to requirements of Section 05410, Load-Bearing Metal Studs.

4.Stud gages indicated on Drawings or specified are the minimum. Where required stud height and/or loads exceed code requirements or manufacturer's recommendations, provide heavier gage studs and/or decrease stud spacing as necessary to conform to code requirements.

C.Suspended and Furred Ceiling Systems and Wall Furring: Suspended ceiling framing system shall support finished ceiling, light fixtures, air diffusers, and accessories, as required. suspension system shall provide a maximum deflection of L/240. Carrying channels shall be fabricated from minimum 0.0548 inch thick cold-rolled steel, 1-1/2 inch wide x 7/16 inch deep. Carrying channels for supports under ducts shall be 2 inches in size as specified. Carrying channels shall be fabricated from hot-dip galvanized coated sheet.

1.Plaster Ceilings: Cross furring members shall conform to ASTM C 645, and shall be fabricated from cold-rolled steel, 3/4 inch wide x 7/16 inch deep. Furring members shall be fabricated from hot-dip galvanized coated sheet.

2.Gypsum Wallboard Ceilings: Furring members shall be fabricated from cold-rolled steel, 7/8 inch x 2-9/16 inches. Furring members shall be fabricated from hot-dip galvanized coated sheet.

D.Framed Ceilings: Framed ceiling framing system shall support finished ceiling, light fixtures, air diffusers, and accessories, as required. suspension system shall provide a maximum deflection of L/240.

1.Plaster and Gypsum Wallboard Ceilings: Ceiling joists shall conform to ASTM C 645, hot-dip galvanized coated steel, C-shaped, unpunched, 20 gage minimum thickness, unless noted otherwise.

E.Shaft Wall Framing Members:  CH studs and J runners, 20 gage minimum for 2, 4 or 6 inch studs, conforming to ASTM 645, fabricated of steel conforming to ASTM A 653, hot-dip galvanized.

03/29/2005

PROJECT NAMEMETAL SUPPORT ASSEMBLIES

SCHOOL NAME09100-3

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