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Given:
beam deminsions: flange width=22" FLANGE THICKNESS=7" WEB WIDTH=7" SECTION HEIGHT=40"
f'c=5000psi f'ci=3500psi fpu=270ksi Ap=eighteen 1/2" diam strands superimposed load=.85k/ft: 40' simple span Type I cement; moist cured Pretensioned beam Required:
1. Estimate prestress losses at midspan 90 days after release. (elastic shortening,creep,shrinkage,steel relaxation)
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A concrete contractor historical records show that the construction duration for a cast-in-place foundation formwork is 1,000-SF/crew-day. Determine the number of days a 200,000-SF
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The problem in the link below. ">http://www.expertsmind.com/questions/plot-vertical-displacement-cantilever-beam-30134382.aspx#
Define the Transmissivity and Reynold Number TRANSMISSIVITY: (T) A measurement of the rate of groundwater movement through different soil and rock materials. For both confined
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Question Why is slump specified in concrete carriageway comparatively low like 30mmwhen compared with normal concrete like 75mm? Answer Slump of concrete carriageway
Pre-tensioning systems In the previous unit we have seen different steps in a pretensioning operation. Tendon wires or strands (formed as a rope type arrangement made of sever
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