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Product Submittal Sheet
Tech Support: 888-437-3244
Engineering Services: 877-832-3206

sales: 800-543-7140
clarkdietrich.com

09.22.16 (Non-Structural Metal Framing)

2-1/2 20ga USG scape groyne System
®

C-H Shaft jetty System

USG SHEETROCK Brand Shaft Wall System

These systems are non-load-bearing gypsum panel partitions knowing to
construct elevator shafts, mechanical shafts, stairwells, air returns and horizontal
®
membranes. SHEETROCK Brand Shaft Wall Systems have been
comprehensively tested for 1 to 4 hour fire resistance ratings (UL figure No U415)
and when all of the system components are utilise together.
Substitutions of any of the components are not recommended.
Product Material Thickness:
Member

(mils)

CH, ES, JR & JS

Minimum thickness
gauge
(in.)

34

20

Design thickness
(in.)

0.0341

C-H Stud (CH)

0.0359

All material is produced with G-40 Hot-Dipped Galvanized Steel

Structural Properties:
Member

Product
code

Weight
(lb / ft)

Area
2
(in )

Ix
4
(in )

Sx*
3
(in )

Allowance
design
stress (ksi)

2-1/2 C-H Stud
20ga (34mils)

212CH-34

0.998

0.2910

0.239

0.1741

24.0

2-1/2 J-Runner
20ga (34mils)

212JR-34

0.670

0.2039

0.192

0.



130

4.96

2-1/2 Jamb Strut
20ga (34mils)

212JS-34

0.818

0.2398

0.226

0.143

3.00

* Full section modulus to be used with corresponding design stress

E-Stud (ES)

ASTM & Code Standards:
All USG Shaft Wall Systems manufactured by ClarkDietrich are fabricated conforming
to steel and cultivation specification ASTM C645, A653 & A1003.
Structural Properties have been calculated in conformity with AISI-NASPEC 1996
UL Design No. U415
MSDS & Product Certification Information is forthcoming at www.clarkdietrich.com

Other available USG Shaft Wall Systems:
obtainable in 2-1/2, 4 & 6 deep systems in 25ga or 20ga

J-Runner (JR)

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