A reinforced concrete beam section is "b" wide and "h" deep. It is to be reinforced with the given diameter and number of pieces below, stirrups is 10 mmØ with clear concrete covering of 40 mm. Consider f'c = 32 MPa and fy = 415 MPa. 1) If the beam is reinforced with 4 - 25mmØ tension steel only, calculate the tension steel strain et. 2) If the beam is reinforced with 6-28mmØ tension steel (in two layers of 3 bars each with 25 mm clear distance between layers), calculate the tension steel strain et. 3) Calculate the flexural strength of the beam in question 2.

A reinforced concrete beam section is "b" wide and "h" deep. It is to be reinforced with the given diameter and number of pieces below, stirrups is 10 mmØ with clear concrete covering of 40 mm. Consider f'c = 32 MPa and fy = 415 MPa. 1) If the beam is reinforced with 4 - 25mmØ tension steel only, calculate the tension steel strain et. 2) If the beam is reinforced with 6-28mmØ tension steel (in two layers of 3 bars each with 25 mm clear distance between layers), calculate the tension steel strain et. 3) Calculate the flexural strength of the beam in question 2.

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

A reinforced concrete beam section is "b" wide and "h" deep. It is to be reinforced with the given diameter and number
of pieces below, stirrups is 10 mmØ with clear concrete covering of 40 mm. Consider f'c = 32 MPa and fy = 415 MPa.
1) If the beam is reinforced with 4 - 25mmØ tension steel only, calculate the tension steel strain et.
2) If the beam is reinforced with 6-28mmØ tension steel (in two layers of 3 bars each with 25 mm clear distance between layers),
calculate the tension steel strain et.
3) Calculate the flexural strength of the beam in question 2.
4) Determine the total unfactored dead load and live load using the result in problem 3 that the beam can carry if dead load is
30% of the total live load. Use "L" as total beam length. Assume that the beam is simply supported.
5) Determine the superimpose dead load that the beam can carry from the resut in problem 4 if concrete weighs 23.6kN/m3.
b
380mm
h
520mm
L
5.70m

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