Calculate the uniform load w, (in addition to the beam weight) that will cause the section shown to begin to crack if used as a 28-ft simply supported beam. Use normal weight concrete with Ls 4000 psi. = 60,000 psi, E= 29,000 ksi, and the reinforced concrete weight = 150 lb/ft. 4 in. Il 28 ft 4 in. 22 in. 30 in. 2 in. 2 in. -12 in.- 3 #9
Calculate the uniform load w, (in addition to the beam weight) that will cause the section shown to begin to crack if used as a 28-ft simply supported beam. Use normal weight concrete with Ls 4000 psi. = 60,000 psi, E= 29,000 ksi, and the reinforced concrete weight = 150 lb/ft. 4 in. Il 28 ft 4 in. 22 in. 30 in. 2 in. 2 in. -12 in.- 3 #9
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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
Transcribed Image Text:Calculate the uniform load w (in addition to the beam weight) that will cause the section shown
to begin to crack if used as a 28-ft simply supported beam. Use normal weight concrete with
L=4000 psi. f = 60,000 psi, E₁=29,000 ksi, and the reinforced concrete weight = 150 lb/ft³.
4 in.
28 ft
4 in.
22 in. 30 in.
2 in.
2 in.
3 #9
●
||—12 in—-|
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