Determine the bending moment that can make a crack on the given cross section. The cross section is reinforced with four No. 11 (in-lb) bars. The concrete tensile strength can be estimated by 7.5√f. The concrete modulus of Elasticity can be estimated by 57000√f. Use the transformed section. Given Properties E. := 29000000-psi f₂ = 60000-psi h:= 24 in f':= 4000-psi f, = 60000-psi f=4000-psi b:= 36 in 2-½ typ -36⁰- E.:= 29000000-psi E = 57000fpsi = 3604997 psi 24"
Determine the bending moment that can make a crack on the given cross section. The cross section is reinforced with four No. 11 (in-lb) bars. The concrete tensile strength can be estimated by 7.5√f. The concrete modulus of Elasticity can be estimated by 57000√f. Use the transformed section. Given Properties E. := 29000000-psi f₂ = 60000-psi h:= 24 in f':= 4000-psi f, = 60000-psi f=4000-psi b:= 36 in 2-½ typ -36⁰- E.:= 29000000-psi E = 57000fpsi = 3604997 psi 24"
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Determine the bending moment that can make a crack on the given cross section. The cross section is reinforced with four No. 11 (in-lb) bars.
Transcribed Image Text:Determine the bending moment that can make a crack on the
given cross section. The cross section is reinforced with four No.
11 (in-lb) bars. The concrete tensile strength can be estimated by
7.5√√f. The concrete modulus of Elasticity can be estimated by
57000√ √f. Use the transformed section.
Given Properties
E = 29000000-psi
f, = 60000-psi
h:= 24 in
f':= 4000 psi
f₁ = 60000-psi
b:= 36 in
h:= 24 in
fi:= 4000-psi
b:= 36 in
2-12
typ
E = 29000000-psi
-36⁰-
=57000fpsi = 3604997 psi
24"
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