Illinois Society of Architects · Chicago · leaf 313
dust-tight. F. Wall Stacks. (1) All wall stacks or wall pipes, heads,boots, ells, tees, angles and other connectionsshall be made of bright tin or galvanizediron and shall be covered with not less thanone thickness of 12-pound per one hundredsquare foot of asbestos paper. All such pipesshall be… … li m ^ 8 S 5 >
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
