2. A reinforced concrete beam having a width of 310 mm and an overall depth of 550mm is reinforced with 2-25 mm compression bars and 8- 25 mm tension bars both having fy = 415 MPa. Concrete protective covering is 50 mm from the centroid of the bar group. Unit weight of concrete is 23.5 kN/m3. Concrete strength fc' = 21 MPa. The beams is supported as shown. L1 = 8m and L2 = 3m. Other than the weight of the beam, the beam will support a uniform live load. Calculate the following: a) the balance tension steel area. b) the ultimate moment capacity of the beam. c) maximum uniform service liveload that the beam can carry. Wo, W L. BA
2. A reinforced concrete beam having a width of 310 mm and an overall depth of 550mm is reinforced with 2-25 mm compression bars and 8- 25 mm tension bars both having fy = 415 MPa. Concrete protective covering is 50 mm from the centroid of the bar group. Unit weight of concrete is 23.5 kN/m3. Concrete strength fc' = 21 MPa. The beams is supported as shown. L1 = 8m and L2 = 3m. Other than the weight of the beam, the beam will support a uniform live load. Calculate the following: a) the balance tension steel area. b) the ultimate moment capacity of the beam. c) maximum uniform service liveload that the beam can carry. Wo, W L. BA
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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a reinforced concrete beam having a width of 300mm and an overall depth of 550mm is reinforced with 2-25mm compression bars and 8-25 mm bars tension both having fy=415 MPa. The concrete protective covering is 50 mm from the centroid of the bar group. Unit weight of concrete is 23.6 kN/m^3. concrete strength f'c=20.7 MPa. the beam is supported as shown, L1=8m, L2=3m
Transcribed Image Text:2. A reinforced concrete beam having a width of
310 mm and an overall depth of 550mm is
reinforced with 2-25 mm compression bars and 8-
25 mm tension bars both having fy = 415 MPa.
Concrete protective covering is 50 mm from the
centroid of the bar group. Unit weight of concrete
is 23.5 kN/m3. Concrete strength fc' = 21 MPa.
The beams is supported as shown. L1 = 8m and L2
= 3m. Other than the weight of the beam, the beam
will support a uniform live load.
Calculate the following:
a) the balance tension steel area.
b) the ultimate moment capacity of the beam.
c) maximum uniform service liveload that the
beam can carry.
Wo, W
L.
L:
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