Masonry Magazine January 1967 Page. 28
Concrete Block gives your new commercial buildings a kind of complete fire-safety that sparkles!
Building professionals never had it so good. The variety of construction materials grows every day, giving the ways and means to more creative architectural flair and versatility.
Concrete block, for example, has suddenly made the building industry sit up and take notice. There are now more shapes and sizes of concrete block than ever before, more wall pattern possibilities than ever before.
But style doesn't count much without security: complete fire-safety. Block simply cannot burn. The excellent stability of concrete masonry proves consistent in fire tests by recognized laboratories.
The tests consist of exposing one side of a wall to fire of controlled intensity for a time equal to or greater than its rated fire-resistance time. Immediately, the hot face of the wall is subject to a fire-hose stream. Bearing walls also carry a load equal to 80 psi based on gross wall area. The wall must withstand the fire test without passage of flame or gases. Heat transmission must be limited to less than 250° F gain in temperature.
Little wonder concrete block is used so frequently in modern commercial buildings as well as schools, medical buildings, theaters and wherever large crowds of people congregate. (You'll even see the many faces of concrete block in local fire stations. What better testimonial is there for block's complete fire-safety?)
Make sure you have complete fire-safety in the next building or home you design.
NATIONAL CONCRETE MASONRY ASSOCIATION 2009 14th Street North, Arlington, Virginia 22201
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