69 36 1500 K B Node 1 Node 2 55.3° A 21.1 10.5 30 243 35.8° Node 3 D 24 24
69 36 1500 K B Node 1 Node 2 55.3° A 21.1 10.5 30 243 35.8° Node 3 D 24 24
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The deep beam shown in figure supports a factored column load of 1450 kips. The beam and all columns are 24 in. wide with d = 108 in. For the shown strut-and-tie model it is assumed that horizontal and vertical confinement reinforcement will be provided to justify using Bs = 0.75 for inclined struts (horizontal reinforcement is #10 @ 12 in. on each face while vertical reinforcement is #5 @10 inches 2 legged stirrups). Including the weight of the beam, check the strength of the struts, and design reinforcement for the bottom tension tie. Use normal-weight concrete with f'c = 5000 psi and use fy = 60 ksi.
Transcribed Image Text:69
36
1500 K
B
Node 1
Node 2
55.3°
A
21.1 10.5
30
243
35.8°
Node 3
D
24
24
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