A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, - 0.9 in, b2 - 2.7 in., and d - 1.8 in. The elastic modulus of the steel is E, - 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the bronze is E2 - 15,000 ksi, and its allowable bending stress is 14 ksi. Calculate the allowable bending moment that can be applied about the z centroidal axis. Bronze (2) Steel (1) b2
A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, - 0.9 in, b2 - 2.7 in., and d - 1.8 in. The elastic modulus of the steel is E, - 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the bronze is E2 - 15,000 ksi, and its allowable bending stress is 14 ksi. Calculate the allowable bending moment that can be applied about the z centroidal axis. Bronze (2) Steel (1) b2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, - 0.9 in, bz - 2.7 in.,
and d- 1.8 in. The elastic modulus of the steel is E, - 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the
bronze is E2 - 15,000 ksi, and its allowable bending stress is 14 ksi. Calculate the allowable bending moment that can be applied about
the z centroidal axis.
Bronze (2)
d
Steel
(1)
bị
b2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf2ba5cc-43de-4012-8d00-232781b6e8fe%2F14448ac4-0552-4f0f-8dee-8f2b74273d83%2Fr0p5nkw_processed.png&w=3840&q=75)
Transcribed Image Text:A composite beam made of steel and bronze has the cross section shown. The cross-sectional dimensions are b, - 0.9 in, bz - 2.7 in.,
and d- 1.8 in. The elastic modulus of the steel is E, - 30,000 ksi, and its allowable bending stress is 17 ksi. The elastic modulus of the
bronze is E2 - 15,000 ksi, and its allowable bending stress is 14 ksi. Calculate the allowable bending moment that can be applied about
the z centroidal axis.
Bronze (2)
d
Steel
(1)
bị
b2
![Assume the transformed steel section reaches its allowable bending stress first. Calculate the magnitude of the allowable bending
moment that can be applied in this case.
Answer:
M-
i
Ib-in.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf2ba5cc-43de-4012-8d00-232781b6e8fe%2F14448ac4-0552-4f0f-8dee-8f2b74273d83%2Fqbtspri_processed.png&w=3840&q=75)
Transcribed Image Text:Assume the transformed steel section reaches its allowable bending stress first. Calculate the magnitude of the allowable bending
moment that can be applied in this case.
Answer:
M-
i
Ib-in.
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