Illinois Society of Architects · Chicago · leaf 215
f the ultimate strength to the w^orking, 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… … JOSEPH HALSTED CO. Telephone 510 Monroe STRUCTURAL AND ORNAMENTAL IRON WORK Ornamental Iron Work Iron Stairs Iron Store FrontsIron Fences and Grilles Elevator Doors and Enclosures Steel Beams and Columns Fire Escapes 388-390 W. Randolph St. CHICAGO
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Catalog] (1891)](https://img.insideoutlibrary.com/img/200/ia-catalog1891repo-35-31.webp)
