PROBLEM NO. 2 A 4.5m simply supported rectangular reinforced concrete beam has a width of 300 mm, effective depth of 530 mm and total depth of 600 mm. The beam is to be reinforced with 20mmø bars. The concrete strength fe 21 MPa and the steel yield strength fy = 275 MPa. The beam carries a pre-cast 100- mm-thick concrete slab that is 4 m wide. The unit weight of concrete is 24 kN/m3. Floor live load is 2.4 kPa. At ultimate condition, U = 1.2D + 1.6L. 1. Calculate the factored moment. 2. Determine the governing steel ratio following the requirements of NSCP. 3. Determine the minimum number of 20mmo bars required as tension reinforcement.

PROBLEM NO. 2 A 4.5m simply supported rectangular reinforced concrete beam has a width of 300 mm, effective depth of 530 mm and total depth of 600 mm. The beam is to be reinforced with 20mmø bars. The concrete strength fe 21 MPa and the steel yield strength fy = 275 MPa. The beam carries a pre-cast 100- mm-thick concrete slab that is 4 m wide. The unit weight of concrete is 24 kN/m3. Floor live load is 2.4 kPa. At ultimate condition, U = 1.2D + 1.6L. 1. Calculate the factored moment. 2. Determine the governing steel ratio following the requirements of NSCP. 3. Determine the minimum number of 20mmo bars required as tension reinforcement.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.1.3P

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PROBLEM NO. 2
A 4.5m simply supported rectangular reinforced concrete
beam has a width of 300 mm, effective depth of 530 mm and
total depth of 600 mm. The beam is to be reinforced with
20mmø bars. The concrete strengthfc = 21 MPa and the steel
yield strength f = 275 MPa. The beam carries a pre-cast 100-
mm-thick concrete slab that is 4 m wide. The unit weight of
concrete is 24 kN/m3. Floor live load is 2.4 kPa. At ultimate
condition, U = 1.2D + 1.6L.
1. Calculate the factored moment
2. Determine the governing steel ratio following the
requirements of NSCP.
3. Determine the minimum number of 20mmo bars
required as tension reinforcement.

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