A. Calculate the stress in the concrete at the top and bottom extreme fibers under a positive bending moment of 78 kip, in psi (neglect steel reinforcement) B. If f'c= 3200 psi and normal weight of concrete is used, does cracking occurs? What is the maximum uniformly distributed load the beam can carry if it is used as a simple beam with a 26 ft span without exceeding the modulus of rupture of the concrete, in Ib/ft?

A. Calculate the stress in the concrete at the top and bottom extreme fibers under a positive bending moment of 78 kip, in psi (neglect steel reinforcement) B. If f'c= 3200 psi and normal weight of concrete is used, does cracking occurs? What is the maximum uniformly distributed load the beam can carry if it is used as a simple beam with a 26 ft span without exceeding the modulus of rupture of the concrete, in Ib/ft?

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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Question

Please give me the correct solution of this problem in principle of reinforced/prestressed concrete

A. Calculate the stress in the concrete at the top and bottom extreme fibers under a
positive bending moment of 78 kip, in psi (neglect steel reinforcement)
B. If f'c= 3200 psi and normal weight of concrete is used, does cracking occurs? What
is the maximum uniformly distributed load the beam can carry if it is used as a
simple beam with a 26 ft span without exceeding the modulus of rupture of the
concrete, in lb/ft?
250 mm
80 mm
130 mm
80 min
80 mm

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