wall framing to accommodate the 1" (25.4 mm) DensGlass® Shaftliner panels used as fireblocking between the floor levels. The UL Design U373 and U375 Area Separation Wall assemblies were evaluated at a height up to 44' (13,411 mm) and the ITS/WHI GP/WA 120-04 Area Separation Wall assemblies were evaluated at a height up to 68' (20,726 mm).

OVERVIEW CGC Shaft Wall Systems are non-load-bearing gypsum wall partition assemblies constructed from outside the shaft at each floor. Shafts are enclosed early in construction, and

5/17 · ShaftWall provides a lightweight, fire resistant structure to protect elements in confined spaces wherever access is limited to one side only. The system pro

Fire-Rated Assemblies 3 USG Shaft Wall Systems 09 20 00/USG BuyLine 2425 1 Hour Fire-rated Construction Non-loadbearing Acoustical Performance Construction Detail Description Test Number STC Test Number wt. 8 † 5/8 SHEETROCK® brand FIRECODE® Core gypsum UL

USG Shaft Wall Systems are non-load-bearing gypsum wall partition assemblies constructed from outside the shaft at each floor. Shafts are enclosed early in 

The clips are used to hold the area separation wall assembly in place at the floor, roof and truss line between adjacent units. Should a fire break out in one unit, the Aluminum Burn Clips on the fire-ridden side of the area-separation wall will melt, allowing the wall structure for that side to collapse.

4 OVERVIEW USG Shaft Wall Systems are non-load-bearing gypsum wall partition assemblies constructed from outside the shaft at each floor.

USG Shaftwall Systems These systems are nonload-bearing gypsum panel partitions designed to construct elevator shafts, mechanical shafts, stairwells, air 

USG Shaft Wall Systems are non-load-bearing gypsum wall partition assemblies constructed from outside the shaft at each floor. Shafts are enclosed early in construction, and the walls are finished later, along with interior partitions. Installation is quick and easy, using components and application procedures familiar to drywall contractors.

Shaftwall. One layer 1″ x 24″ (25.4 mm) ToughRock® Shaftliner or DensGlass® Shaftliner panel inserted between 2-1/2″ floor and ceiling runners of 2-1/2″ steel C-T, C-H studs. Opposite side: Base layer of 5/8″ (15.9 mm) ToughRock® Fireguard X® Products or 2/8″ (15.9 mm) DensArmor Plus® Fireguard® gypsum panels installed

8/19 · The assemblies listed below are a small sample of the UL Designs in which USG shaft wall systems can be used. For more details on fi re-rated assemblies, see USG literature SA926, Shaft Wall Systems. SSA926S_08.indd 3A926S_08.indd 3 99/13/07 1:33:52