|
Additional
Reading
Page 9 of 11
   
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
| Shaft Wall Performance
Comparisons |
| Type of Shaft Wall |
Masonry |
Poured- in-Place Concrete |
Solid Plaster |
Solid Gypsum Wall |
Gypsum Cavity Shaft
Wall |
| Thickness |
4.8" - 8" |
8" - 12" |
2" - 5" |
2-1/4" |
3-1/2" |
| Weight |
35 psf |
130 psf |
9 psf |
9 psf |
9 psf |
| Structural Characteristics
|
Stiff/ Brittle |
Stiff/ Brittle |
Stiff/ Brittle |
Elastic/ Ductile |
Elastic/ Ductile |
| Max. Height (at 5
psf) |
8' - 4" |
By Design |
Up to 18' |
Up to 18' |
Up to 28' |
| Impact Resistance
|
23 @ 250 ft/lbs |
By Design |
Up to 38 @ 250 ft/lbs |
99ft/lbs |
99ft/lbs |
| Fire Rating |
1-4 hours |
1-4 hours |
2 hours |
2 hours |
1-4 hours |
| Cost Index |
$$$$ |
$$$$$ |
$$ |
$ |
$ |
| All-Weather Construction
|
No |
Yes |
No |
Yes |
Yes |
| Speed of Erection
(1=fastest; 5=slowest) |
4 |
5 |
2 |
1 |
1 |
| Electric/ Plumbing
Chases |
No |
No |
No |
No |
No |
| Seismic |
No |
No |
No |
Yes |
Yes |
| Building Movement
|
No |
No |
No |
Yes |
Yes |
| Shear Wall Design |
No |
Yes |
No |
No |
No |
| Smooth Decoration
|
No |
Yes |
Yes |
Yes |
Yes |
| Sound Rating (STC) |
~ 40 |
~ 58 |
~ 44 |
Up to 40 |
Up to 52 |
| Elevator Interface
|
NA |
NA |
Yes |
Yes |
Yes |
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| * When used with an abuse-resistant gypsum
fiber panel. |
| Recommended Elevator
Shaft Pressure Load* |
| Elevator velocity ft./min. |
One or two elevators per shaft |
Three or more elevators per shaft |
| 0 to 80 |
5.0 psf |
5.0 psf |
| 180 to 1,000 |
7.5 psf |
5.0 psf |
| 1,000 to 1,800 |
10.0 psf |
7.5 psf |
| 1,800 to 3,000 |
15.0 psf |
7.5 psf |
| *Single-cab high-speed elevator
shafts may require special design considerations |
Page 9 of 11
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