. The theory of the flexure and strength of rectangular flat plates applied to reinforced concrete floor slabs . TISCHERS CREEK BRIDGE, DULUTH, are 26 feet longtitudinallyThis type is built with spans up to 500. View of Reinforcement in Place TISCHERS CREEK BRIDGE, DULUTH, MINN. Designed by C. A. P. Turner Geo. H. Lounsbury, Contractor FLAT SLAB FLOORS 1. The superiority of flat slab floors supported directly on columns,over other forms of construction when looked at from the stand-point of lower cost, better lighting, greater neatness of appearance,and increased safety and rapidity


. The theory of the flexure and strength of rectangular flat plates applied to reinforced concrete floor slabs . TISCHERS CREEK BRIDGE, DULUTH, are 26 feet longtitudinallyThis type is built with spans up to 500. View of Reinforcement in Place TISCHERS CREEK BRIDGE, DULUTH, MINN. Designed by C. A. P. Turner Geo. H. Lounsbury, Contractor FLAT SLAB FLOORS 1. The superiority of flat slab floors supported directly on columns,over other forms of construction when looked at from the stand-point of lower cost, better lighting, greater neatness of appearance,and increased safety and rapidity of construction, is so general!}^, orrather so universally conceded as to render any reliable informationrelative to the scientific computation of stresses in this type of con-struction of great interest. Heidenreich, in his Engineers PocketBook on Reinforced Concrete, page 89, classifies this type as floorswithout beams and girders—^Mushroom System. Since ^mushroom, as applied to concrete, is an arbitrary orfanciful term, and indeed, almost a contradictory one, a word ofexplanation as to its origin may be of interest. The term wasoriginated by C. A. P. Turner, of Minneapolis, and applied to hisflat plate constr


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