A symmetrical I section beam with total depth of 600 mm, moment of inertia of 5.0 x 10 mmand concrete area of 113,500 mm2 will be used on a 9.0 m simple span. Assume unit weight ofconcrete is equal to 24 kN/m. The beam carries a concentrated live load of 30 kN at midspan.The beam will be pre-tensioned with multiple seven-wire strands below the centroid at constanteccentricity of 200 mm. The initial and final prestressing force is 1000 kN and 800 kNrespectively. Calculate the net deflection under service loads if E 13734 MPa. (Note: include thesign if the answer is negative) (mm)

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Answered: Calculate the net deflection under…

Engineering

Civil Engineering

Calculate the net deflection under service loads

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

Beams

In structural engineering, a beam is a component made of a variety of materials (including steel alloys, and wood) that can resist loads applied laterally to the beam axis. Members, elements, rafters, shafts, and purlins are all terms used to describe beams.

Question

A symmetrical I section beam with total depth of 600 mm, moment of inertia of 5.0 x 10 mm
and concrete area of 113,500 mm2 will be used on a 9.0 m simple span. Assume unit weight of
concrete is equal to 24 kN/m. The beam carries a concentrated live load of 30 kN at midspan.
The beam will be pre-tensioned with multiple seven-wire strands below the centroid at constant
eccentricity of 200 mm. The initial and final prestressing force is 1000 kN and 800 kN
respectively. Calculate the net deflection under service loads if E 13734 MPa. (Note: include the
sign if the answer is negative) (mm)

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