A rectangular concrete beam 250 mm wideand 600 mm deep is pre-stressed by means of16 high tensile wires, each of 7 mm diameter,located Sat 200 mm from the bottom face ofthe beam at a given section. If the effectivepre-stress in the wires is 700 MPa, what is themaximum sagging bending moment (in kNm)(correct to 1-decimal place) due to live loadthat this section of the beam can withstandwithout causing tensile stress at the bottomface of the beam? Neglect the effect of deadload of beam.

GIVEN, A rectangular concrete beam of width=250mmDepth=600mmDiameter of wire=7mmEffective…

Answered: A rectangular concrete beam 250 mm wide…

A rectangular concrete beam 250 mm wide and 600 mm deep is pre-stressed by means of 16 high tensile wires, each of 7 mm diameter, located Sat 200 mm from the bottom face of

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 rectangular concrete beam 250 mm wide
and 600 mm deep is pre-stressed by means of
16 high tensile wires, each of 7 mm diameter,
located Sat 200 mm from the bottom face of
the beam at a given section. If the effective
pre-stress in the wires is 700 MPa, what is the
maximum sagging bending moment (in kNm)
(correct to 1-decimal place) due to live load
that this section of the beam can withstand
without causing tensile stress at the bottom
face of the beam? Neglect the effect of dead
load of beam.

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