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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)
Define the Spalling - underwater inspection of bridge? A spall is a roughly circular or oval depression in the concrete. Corroding reinforcement can cause spalls and reinforcin
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Modulus of elasticity of light-weight concrete The modulus of elasticity of light-weight concrete is about 50 to 55% of that of normal-weight concrete. The loss of prestresses
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Explain Influence lines-reactions 1. Remove the support under investigation 2. Displace the beam vertically a distance of 1 unit. The resulting beam shape will be the sha
Q. Describe the Consolidation Settlement? The resulting settlements which are time-dependent and are termed consolidation settlements. After the consolidation settlements take
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Explain the Activitated Sludge (Aeration Tank)? The activated sludge treatment process is a biochemical oxidation process. Organic solids are stabilized through the oxidation p
types of staircases.
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