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A rectangular beam made using concrete of fc' = 6000 psi and steel with fy= 60...

A rectangular beam made using concrete of fc' = 6000 psi and steel with fy= 60 ksi. The beam has a width B=20 in and a total depth of 20 in with an effective depth d=17.5 in. The tensile steel consists of 4 #11 bars at the bottom side.

a) Determine the maximum service load moment that can be resisted without stressing the concrete above 0.45fc' or the steel above 0.4fy.

b) Calculate the nominal flexural moment capacity of the beam.

c) Calculate the strain in steel in (tension) in the beam.

d) Calculate the resistance factor for the beam based on the strain in steel.

e) Determine the design moment capacity of the beam.

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Answer #1

Rectangular Bean b=20, R=2o, d=17:5, As= 4#11 = 481.5656.246 fola 6Kse, fy= boksi : P=0.75 @ Concrete pous fe= 0.45x6= 2.7

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