Reinforced concrete beams 300 mm wide and 500 mm deep are spaced 2.5 m on centers. The beams support a slab 100 mm thick carrying a superimposed dead load of 3 kPa and a live load of 4.8 kPa. In the typical frame shown below, columns E and H are removed so that girder BEHK supports beams DEF at E and GHI at H. Concrete weighs 24 kN/m³. Use 20mm bars and 10 mm stirrups. Concrete strength is f's = 21 MPa and steel yield strength fy= 275 MPa 6 m 6 m B. ‚C А 2.5 m D E 2.5 m G 2.5 m K Design the amount of reinforcement for a maximum positive moment in beam DEF. Present your answer in mm2 and the number of 20mm bars required. Consider T-beam action if possible. • Design the amount of reinforcement for a maximum negative moment in beam DEF. Present your answer in mm2 and the number of 20mm bars required. Consider T-beam action if possible.
Reinforced concrete beams 300 mm wide and 500 mm deep are spaced 2.5 m on centers. The beams support a slab 100 mm thick carrying a superimposed dead load of 3 kPa and a live load of 4.8 kPa. In the typical frame shown below, columns E and H are removed so that girder BEHK supports beams DEF at E and GHI at H. Concrete weighs 24 kN/m³. Use 20mm bars and 10 mm stirrups. Concrete strength is f's = 21 MPa and steel yield strength fy= 275 MPa 6 m 6 m B. ‚C А 2.5 m D E 2.5 m G 2.5 m K Design the amount of reinforcement for a maximum positive moment in beam DEF. Present your answer in mm2 and the number of 20mm bars required. Consider T-beam action if possible. • Design the amount of reinforcement for a maximum negative moment in beam DEF. Present your answer in mm2 and the number of 20mm bars required. Consider T-beam action if possible.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Reinforced concrete beams 300 mm wide and 500 mm deep are spaced 2.5 m on centers. The
beams support a slab 100 mm thick carrying a superimposed dead load of 3 kPa and a live load
of 4.8 kPa. In the typical frame shown below, columns E and H are removed so that girder BEHK
supports beams DEF at E and GHI at H. Concrete weighs 24 kN/m³. Use 20mm bars and 10 mm
stirrups. Concrete strength is f's = 21 MPa and steel yield strength fx= 275 MPa
6 m
6 m
B.
A
2.5 m
F
2.5 m
G
H
2.5 m
K
Design the amount of reinforcement for a maximum positive moment in beam DEF.
Present your answer in mm2 and the number of 20mm bars required. Consider T-beam
action if possible.
Design the amount of reinforcement for a maximum negative moment in beam
DEF. Present your answer in mm² and the number of 20mm bars required.
Consider T-beam action if possible.
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