Illinois Society of Architects · Chicago · leaf 217
of the ultimate strength to the working, or the proper allowable working, strength. Fundamental principles of engineering design are stability and economy: First, thestructure must safely withstand all the stresses which are to be applied to it; second,the structure must be built and maintained at… … Architectural Iron Work* JOSEPH HALSTED CO. RANDOLPH AND ELIZABETH STREETSCHICAGO TELEPHONE, MONROE 510 ORNAMENTAL IRON WORK IRON STAIRS ELEVATOR DOORS AND ENCLOSURES IRON STORE FRONTS IRON FENCES AND GRILLES STEEL BEAMS AND COLUMNS FIRE ESCAPES
Architecture · Building · Architects
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