Illinois Society of Architects · Chicago · leaf 261
plied to the metalin a bed of cement mortar; hollow tiles«:hall be constructed In such a manner thatthere shall be one air -space of at leastthree-fourths of an Inch by the width ofthe metal surface to be covered within suciiclay coverings the minimum thickness ofconcrete on the bottom and sides of…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
