Questiom 1.) Is in the picture2.) Compute the stress in prestressed reinforcement at nominal strength ( Mpa ) if it has a span of 10m3.) Determine the number of 20-mm diameter bonded steel reinforcement needed to satisfy the NSCP requirements. Place the steep bars 75mm above the bottom of the beam. An I beam with a flange width of 500 mm and a thickness of 150 mm has a total depth of800 mm. Thickness of web is 150 mm. The prestressed beam is provided by unbondedtendons with an effective prestress after all losses fe 1100 MPa, fpy = 1500 MPa, fc' -36 MPa. Determine the Ultimate Moment Capacity (kN-m) of the beam if it is suppliedwith an unbonded tendons placed at 120 mnm above the bottom of the beam in addition tothat of the steel reinforcement A,, - 1750 mm-.

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Answered: 20-mm diameter bonded steel…

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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Questiom 1.) Is in the picture 2.) Compute the stress in prestressed reinforcement at nominal strength ( Mpa ) if it has a span of 10m 3.) Determine the number of 20-mm diameter bonded steel reinforcement needed to satisfy the NSCP requirements. Place the steep bars 75mm above the bottom of the beam.

An I beam with a flange width of 500 mm and a thickness of 150 mm has a total depth of
800 mm. Thickness of web is 150 mm. The prestressed beam is provided by unbonded
tendons with an effective prestress after all losses fe 1100 MPa, fpy = 1500 MPa, fc' -
36 MPa. Determine the Ultimate Moment Capacity (kN-m) of the beam if it is supplied
with an unbonded tendons placed at 120 mnm above the bottom of the beam in addition to
that of the steel reinforcement A,, - 1750 mm-.

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