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By: Robert Grupe
Director, Architectural and Technical Solutions, United States Gypsum Company

Phil Shaeffer
Manager, Codes and Technical Support, United States Gypsum Company

Dean Updegrove
Product Marketing Manager, United States Gypsum Company

Instructions

• Read the article "Gypsum Cavity Shaft Wall Systems: The Standard for Life Safety in Low-, Mid- and High-Rise Construction"and the additional reading material.
• Complete the questions below, then fill in your answers .
• Fill out and submit the AIA/CES education reporting form in the magazine or print the form to receive one AIA learning unit.

Questions:

LU: 1 HSW: 1

1. The type of shaft wall selected and its location impacts the amount of usable space in a building.
a. True
b. False

2. In comparing shaft wall performances, which has the lowest cost index?
a. Masonry
b. Poured-in-place concrete
c. Solid plaster
d. Gypsum panel

3. In comparing shaft wall performances, which has the fastest speed of erection?
a. Masonry
b. Poured-in-place concrete
c. Solid plaster
d. Gypsum panel

4. Which of the following components are NOT part of a gypsum shaft wall system:
a. Steel C-H-stud
b. Steel L-angles
c. Steel J-runners
d. Steel E-stud

5. Other commonly available materials may be substituted for the components of a tested gypsum shaft wall system.
a. True
b. False

6. During the installation of a gypsum shaft wall, what is the next step after a gypsum liner panel is inserted?
a. J-runners attached to the concrete floor and to the structure above
b. An E-stud is vertically attached along one side of the terminating wall
c. A C-H-stud is slid over the free edge of the liner panel

7. Insulation, plumbing and electrical lines can fit inside:
a. J-runners
b. C-H-studs
c. E-studs
d. The cavity between the gypsum liner panels and face layers

8. According to the design parameters set by Skilling, Helle, Christiansen, and Robertson, shaft walls should be capable of being built from one side only, obtain a two-hour fire rating and:
a. The shaft must be waterproof
b. Be oscillation-tested for one million cycles
c. Maximum height of an individual panel is 4 feet

9. When it comes to pressure loading, it is important to differentiate between intermittent and constant load tables when reviewing manufacturers’ limiting heights tables.
a. True
b. False

10. For pressure loading, if the shaft is to be used for HVAC and there is no sheet metal ductwork, which table should be used:
a. Intermittent
b. Constant

11. The recommended elevator shaft pressure load for a single shaft enclosing two elevators moving at 1,000 – 1,800 ft./min. is:
a. 5.0 psf
b. 7.5 psf
c. 10.0 psf
d. 15.0 psf

12. In order to withstand the positive and negative pressures created by elevators, J-runners at the top and bottom of the shaft wall should be at least:
a. 12 gauge
b. 30 gauge
c. 24 gauge
d. 48 gauge

13. Which abuse category would best meet the abuse-resistance conditions in a shaft wall design for a freight elevator?
a. Category One (Light Duty)
b. Category Two (Moderate Duty)
c. Category Three (Heavy Duty)
d. Category Five (Security)

Click here to print the reporting form.

1-800-USG-4YOU www.usg.com email: usg4you@usg.com

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