DOUBLY REINFORCED BEAM A 300 mm X 450 mm exterior beam is reinforced with 2 – Ø20 mm and 1 - Ø25 mm bars on the firstlayer of tension reinforcement (larger bar is at the middle), 2tension reinforcement, 3 – Ø25 mm for compression reinforcement and Ø12 mm for stirrups. Fromanalysis the depth of the tension zone is 344 mm, if the tension steel has a yield strength of 420 MPaand the compression steel has a yield strength of 414 MPa. Determine the following using all theNSCP 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 concreteB. The depth of compression blockC. Ultimate Moment Capacity of the beam

data we have datermine the compressive stress in concrete f'g = 420 mpa d = 322.2653 mmTension…

Answered: if the tension steel has a yie f 414…

Engineering

Civil Engineering

if the tension steel has a yie f 414 MPa. Determine the acing) to check and layout

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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Concept explainers

Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.

Question

DOUBLY REINFORCED 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

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