Illinois Society of Architects · Chicago · leaf 245
ic gravity of cement shallnot be less than 3.10. Sliould the test ofcement as received fall below this require-ment, a second test may be made upon asample ignited at a low red heat. Tlie lossin weight of the ignited cement shall notexceed 4 per cent. 241 Elevators ^Conveyors FOR EVERY PURPOSE The…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
