File:Stresses in the web reinforcement of restrained concrete beams (1917) (14781883164).jpg

Identifier: stressesinwebrei00lars (find matches)
Title: Stresses in the web reinforcement of restrained concrete beams
Year: 1917 (1910s)
Authors: Larson, Louis J
Subjects: Concrete beams Bending stresses Theses
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Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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18 11. Loading. - The beams were loaded at four points with equalloads as shewn in Pig. 1« The inner loo els were applied at theone-third points of the 12-ft., test span, and the outer loadswere applied at points 32-iru, from the supports thus producing amQ;ttfoent ever the support twice that atfche center of the span. The load was transmitted to the concrete beam thru Jl- x g-in.,plates. They were set in plaster of paris in most cases in or-der to distribute the bearing and prevent crushing failure. Theconcrete bea rested upon 6* x 8-in., plates supported by rollers.The beam. generally rested directly upon the plates without em-bedment in plaster of paris and no crushing was observed due toqnequal bearings. The bottom of the beam was naturally smooth sono trouble Aould be expected in this direction. In one case when the beam was very much out of -plumb it was shimmed up with buildingin paper and ^another the beam was raised and set plumb in plaster ofparis. There were other instance

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