Problem 1: 12" A rectangular reinforced concrete beam with dimensions b314 in, d 25 in, and h = 28 in is reinforced with three No 10 bars. Material strengths are fy 60,000 psi 24" and f, 5000 psi. Isd (a) Find the moment that will produce the first cracking at the bottom surface of the beam, basing your calculation on I, the moment of inertia of the gross concrete section. (b) Repeat the calculation, using I, the moment of inertia of the uncracked transformed section. (c) Determine the maximum moment that can be carried without stressing the concrete beyond 0.45 f. or the steel beyond 0.60 fy. sso13
Problem 1: 12" A rectangular reinforced concrete beam with dimensions b314 in, d 25 in, and h = 28 in is reinforced with three No 10 bars. Material strengths are fy 60,000 psi 24" and f, 5000 psi. Isd (a) Find the moment that will produce the first cracking at the bottom surface of the beam, basing your calculation on I, the moment of inertia of the gross concrete section. (b) Repeat the calculation, using I, the moment of inertia of the uncracked transformed section. (c) Determine the maximum moment that can be carried without stressing the concrete beyond 0.45 f. or the steel beyond 0.60 fy. sso13
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Hope your help concrete design (CE410) thanks
Transcribed Image Text:Problem 1:
12"
A rectangular reinforced concrete beam with dimensions
b314 in, d 25 in, and h = 28 in is reinforced with three
No 10 bars. Material strengths are fy 60,000 psi
24"
and f, 5000 psi.
Isd
(a) Find the moment that will produce the first cracking at the bottom surface of
the beam, basing your calculation on I, the moment of inertia of the gross
concrete section.
(b) Repeat the calculation, using I, the moment of inertia of the uncracked
transformed section.
(c) Determine the maximum moment that can be carried without stressing the
concrete beyond 0.45 f. or the steel beyond 0.60 fy.
sso13
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