Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 169
SYSTEM A, TYPE IIAuthorized for use by the Bureau of Buildings, New York Cit\-, for load of 350 lbs. per square foot. Factor of Safetj- of Ten. f^^^fWjj ^jjv?y/j^gfa^NMii>g,A.| //^aocj ^/ccr^cT^ … SYSTEM A, TYPE IIIThe ceilmgs of any building where this system is used will always be dry and free from discoloring. The space over ceiling is found to be ofvery great service as a pipe space, and also has the effect of entirely deadening sound. Add to the above the fact that in case of fire the…
Building materials
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