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6.Control Joints: Ceiling control joints for expansion and contraction shall be located where indicated on drawings.  A control joint or intermediate blocking shall be installed where ceiling framing members change direction.

PROJECT ARCHITECT NOTE: LOCATE CEILING CONTROL JOINTS ON DRAWINGS.

a.Interior Ceilings With Perimeter Relief: Control joints shall be installed so linear dimensions between control joints shall not exceed 50 feet in either direction or more than 2500 square feet in area.

b.Interior Ceilings Without Perimeter Relief: Control joints shall be installed so linear dimensions between control joints shall not exceed 30 feet in either direction nor more than 900 square feet in area.

D.Splay Wires and Compression Struts:  Install as detailed and as required to prevent upward and sideward motion under seismic conditions, as required by code.

E.Suspension Under Ducts:  For hangers spaced at 4 to 5-1/2 foot centers, provide 6 gage hanger wires with minimum 2 inch runner channels spaced at maximum 48 inch centers.  For greater spans, design system for live load of l0 pounds per square foot of area plus dead load and provide a detail in Shop Drawings.

F.Furring:  Provide framing for horizontal furring as shown or required. Conform to above requirements as applicable.

3.03CONNECTIONS TO METAL DECKING

A.Provide pre-molded neoprene filler strips matching flute profile for non-fire-rated walls and partitions covered on one or both sides up to metal decking.

B.The top runner track of fire-rated partitions shall be a minimum of 20 gage and fastened to metal deck with required fasteners at spacing required for fire rating, but in no case over 16 inches on center. Neither wallboard nor metal studs shall be fastened to top runner to allow for slab deflection. Areas above runner shall be friction fit with a minimum depth of 2-1/2 inch of 4 pounds per cubic foot mineral wool insulation.  A minimum of 1/2 inch of firestopping compound shall be installed to each side of mineral wool insulation for 1-hour system, and 1 inch of firestopping for a 2-hour system. Install required special tracks, angles, fasteners and strips of gypsum wallboard as required to achieve required fire resistance rating.

C.Proprietary fire-rated top tracks are installed in accordance with manufacturer's recommendations and fire rating approval requirements.

3.04CLEANING

A.Remove debris, rubbish, and waste material and legally dispose of off Project site.

3.03PROTECTION

A.Protect Work of this section until Substantial Completion.

END OF SECTION

03/29/2005

PROJECT NAMEMETAL SUPPORT ASSEMBLIES

SCHOOL NAME09100-7

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