(A)-Use the ultimate strength method to determine the design strength (Mu) for the beam shown in figure below, is limited in cross section for engineering reasons (fy = 400 MPa, fc = 25 MPa, a = 185 mm, fs=fy, d = 60 mm, D = 0.734). Assume design as doubly reinforced concrete.

(A)-Use the ultimate strength method to determine the design strength (Mu) for the beam shown in figure below, is limited in cross section for engineering reasons (fy = 400 MPa, fc = 25 MPa, a = 185 mm, fs=fy, d = 60 mm, D = 0.734). Assume design as doubly reinforced concrete.

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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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)-Use the ultimate strength method to determine the design strength
(Mu) for the beam shown in figure below, is limited in cross
section for engineering reasons (fy = 400 MPa, fc = 25 MPa,
a = 185 mm, fs=fy, d = 60 mm, D = 0.734). Assume design as
doubly reinforced concrete.
400mm
300mm
O
O
2020
6025
00
(B)- In the working stress method, proved K= nfc/(fs+nfc)

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Step 1: (A) Calculation of design strength Mu for the beam

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Step 2: Calculation of As1 and As'

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Step 3: (B) Proof for 'K'

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