A 300 mm X 450 mm exterior beam is reinforced with 2 - Ø20 mm and 1 – Ø25 mm bars on the first layer of tension reinforcement (larger bar is at the middle), 2 tension reinforcement, 3 – Ø25 mm for compression reinforcement and Ø12 mm for stirrups. From analysis the depth of the tension zone is 344 mm, if the tension steel has a yield strength of 420 MPa and the compression steel has a yield strength of 414 MPa. Determine the following using all the NSCP provision (larger bar always governs the spacing) to check and layout the beam: Ø25 mm on the second layer of A. The compressive stress in the concrete B. The depth of compression block C. Ultimate Moment Capacity of the beam

A 300 mm X 450 mm exterior beam is reinforced with 2 - Ø20 mm and 1 – Ø25 mm bars on the first layer of tension reinforcement (larger bar is at the middle), 2 tension reinforcement, 3 – Ø25 mm for compression reinforcement and Ø12 mm for stirrups. From analysis the depth of the tension zone is 344 mm, if the tension steel has a yield strength of 420 MPa and the compression steel has a yield strength of 414 MPa. Determine the following using all the NSCP provision (larger bar always governs the spacing) to check and layout the beam: Ø25 mm on the second layer of A. The compressive stress in the concrete B. The depth of compression block C. Ultimate Moment Capacity of the beam

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A 300 mm X 450 mm exterior beam is reinforced with 2 – Ø20 mm and 1 - Ø25 mm bars on the first
layer of tension reinforcement (larger bar is at the middle), 2
tension reinforcement, 3 – Ø25 mm for compression reinforcement and Ø12 mm for stirrups. From
analysis the depth of the tension zone is 344 mm, if the tension steel has a yield strength of 420 MPa
and the compression steel has a yield strength of 414 MPa. Determine the following using all the
NSCP provision (larger bar always governs the spacing) to check and layout the beam:
Ø25 mm on the second layer of
-
A. The compressive stress in the concrete
B. The depth of compression block
C. Ultimate Moment Capacity of the beam

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