USG SHEETROCK Gypsum Liner Panels - Manual

Preparation Identify the following system components are available to construct S HEETROCK Brand Cavity Shaft Wall System:
– S HEETROCK Brand Gypsum Liner Panels or
– S HEETROCK Brand Enhanced Gypsum Liner Panels
– S HEETROCK Brand Gypsum Panels, F IRECODE , F IRECODE C, or U LTRACODE Core
– USG Metal Framing Components (C-H Studs, J-Runner, E-Studs, Jamb Struts)
Other Fire-Resistive Elements/Materials: Coordinate installation of S HEETROCK Brand Shaft Wall assembly with sprayed
fire-resistive materials and other fire-resistive elements so that both elements remain complete and undamaged.
Cavity Shaft USG Metal Framing 1. Position steel J-runners at floor and ceiling with the short leg toward finish side of wall.
Wall Erection S HEETROCK Brand 2. Securely attach runners to structural supports with powder actuated fasteners at both ends and max. 24
Љ o.c.
Gypsum Liner Panels
3. For attachment to steel frame construction install floor and ceiling J-runners and J-Runners or E-Studs on columns
and beams before steel is fireproofed.
4. For attachment to structural steel use Z-shaped stand-off clips secured to structural steel before fireproofing
application.
5. Remove spray-fireproofing from J-Runners and E-Studs before installing gypsum liner panels
6. For wall heights less than maximum available panel height cut gypsum liner panels no more than 1
Љ less than
floor-to-ceiling height and erect vertically between J-Runners.
7. Where shaft wall height shaft exceed maximum available panel height pieces of gypsum liner panel must be butted
together.
a. Position gypsum liner panel end joints within upper and lower third points of wall.
b. Stagger joints top and bottom in adjacent panels.
c. Screw studs to runners on walls over 16
Ј.
8. Cut C-H studs 3/8
Љ to not more than 1/2Љ less than floor-to-ceiling height.
9. Install C-H studs between gypsum liner panels with liner securely engaged.
10. Terminations: Install full-length steel E-Studs or J-Runners vertically at T-intersections, corners, door jambs, and
columns.
11. Openings: Frame with vertical E-Stud or J-Runner at vertical edges, horizontal J-Runner at head and sill. Reinforce
as shown in USG System Folder SA926. Suitably frame all openings to maintain structural support for wall.
12. Elevator Door Frames: Install jamb struts each side of elevator door frames to act as strut-studs.
13. Steel Hinged Door Frames: Install floor-to-ceiling steel E-Studs each side to act as strut-studs.
14. Attach strut-stud to floor and ceiling runners with two 3/8
Љ Type S-12 pan head screws.Attach strut-studs
to jamb anchors with 1/2 Љ Type S-12 screws. Over steel doors, install a cut-to-length section of J-Runner and
attach to strut-studs with 3/8 Љ Type S-12 screws.
Resilient Channels 1. Install Resilient Channels (RC-1 or equivalent) horizontally to face of studs, within 6 Љ of floor and ceiling.
2. Apply Resilient Channels a maximum of 24 Љ o.c. vertically.
3. Attach Resilient Channels to studs with 3/8
Љ Type S screws driven through holes in mounting flange.
4. Splice channel by nesting directly over stud; screw-attach through both flanges. Reinforce with screws at both
ends of splice.
5. Install 1/2 Љ x 3Љ wide continuous gypsum filler strips to top and bottom runner.
6. Gypsum Panel Application with Resilient Channel: Apply base layer horizontally to resilient channels with end
joints staggered. Fasten with 1 Љ Type S screws 12Љ o.c.Apply face layer vertically with joints staggered; attach to
channels with 1-5/8 ЉType S screws 12Љ o.c.
S HEETROCK Brand Gypsum panels and fastening must be per the corresponding fire-resistance design number that is the
Gypsum Panels basis of design. See USG System Folder SA926 for specific fire-resistance design numbers.
S
HEETROCK
®
Brand
Gypsum Liner Panels
Application Tips
Page 1 of 2 Regular
Enhanced