kes care of any expansion of the steel or concrete, and absolutely prevents shalingof the glass, which occurs in all other constructions, and which was impossible toovercome until Simplex w^as placed on the market. Thisis the only sidewalk construction that dues not require experts to set, themost… … Simplex Constfuction, Showing Mktiiod and Simpliccty of Tnstau.,\tion. Simplex system of skylights consists of a pre-formed factory-made slab of reinforcedconcrete, insuring the proper spacing and placing of reinforcement. Pre-formed slab islyi in. in thickness, with heavy I-beam reinforcement one…
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