Masonry Magazine April 2004 Page. 35
Cell Vent
Comes in 7 Colors:
Gear
Coco Tan Brow
Ebony
Rust
obtain an identical fire rating by testing two wall panels, one for each phase of the standardized test. Thus, some products are able to achieve the same fire rating as a concrete masonry wall without providing the same level of protection. This inequity is not general public knowledge.
With the poor fire performance statistics for the U.S., building codes should be working to increase protection for occupants. However, the general trend in building codes is an arguable over-reliance on sprinklers to provide protection in fire events. Thus, instead of promoting improved fire containment and overall balanced design for fire safety, the International Building Code has continued the practice of trading off the protection provided by fire-rated assemblies for increased use of sprinklers.
Attributes of Masonry in Relation to Fire Safety
MASONRY WALLS provide the best option to designers seeking fire containment as an integral strategy to fire safety. Masonry is noncombustible and provides a minimum one-hour fire rating, as opposed to wood frame that can burn in 15 minutes even with immediate response from the local fire department.
Any four-inch masonry wall will provide a minimum of one hour of protection and can easily exceed four hours of protection, using thicker wall sections. Not only does concrete masonry resist heat transfer, it also provides more protection than most available systems from falling debris and other impacts that can threaten the barrier protection provided by the fire-rated assembly. Also, due to the noncombustible nature of masonry, it will not contribute to toxic smoke or provide more fuel to a conflagration.
Use smoke detectors and sprinklers, but also take into account the benefits that concrete masonry fire-rated assemblies can provide. The redundancy of a balanced design approach is needed to protect occupants and property.
Subjective specs:
1. Use a Cell Vent every 16" in the first course.
2. Use a Cell Vent every 16" over all doors and windows (wherever flashing is used).
3. Reset Cell Vent 3/8" to 1/2".
Standard Sizes:
Regular 3/8" X 21/2" X 33/0
Jumbo 3/8" X 33/8" X 33/8"
Ships next day
Ships next day
Popular Special Sizes:
3/8" X 35/8" X 4"
3/8" X 75/8" X 75/8"
3/8" X 12" X 12"
3/8" X 8"X8"
1/4" X 21/2" X 33/8"
Give us 4 working days for special sizes
Samples available on request.
With seven colors, we should be able to match your mortar.
We have the largest selection of Cell Vent colors to meet every situation.
We have special sizes when your job needs them.
U.S. Wire, Inc.
731 Prior Ave N. St. Paul, MN 55104
Phone: 651-646-4523 Fax: 651-646-9168
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April 2004
Masonry 33