The beam shown is prestressed usinga bonded (stress relieved tendons)with a specified tensile strength ofprestressing tendons fpu = 1350MPa, and fc' = 35 MPa. The area ofprestressed reinforcement in tensionzone Aps = 1000 mm². The specified%3Dyield strength of prestressingtendons fpy = 1160 MPa. Which ofthe following gives the ultimatemoment capacity of the prestressedbeam. (kN-m)0.85fc'a430NA.-(d-a/2)· Ap=1000250

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Engineering

Civil Engineering

ed (stress SS specified to ssing tend SSI

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter1: Introduction

Section: Chapter Questions

Problem 1.5.6P: The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular...

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Concept explainers

Connections

In steel structures, connections are the members that join two or more steel members. The connections are the most important members of any steel structure, and hence, they are designed more carefully. The majority of the construction cost of steel structures is incurred due to the connections. The design of connections is done as per the recommendations and specifications of the American Institute of Steel Construction (AISC).

Question

The beam shown is prestressed using
a bonded (stress relieved tendons)
with a specified tensile strength of
prestressing tendons fpu = 1350
MPa, and fc' = 35 MPa. The area of
prestressed reinforcement in tension
zone Aps = 1000 mm². The specified
%3D
yield strength of prestressing
tendons fpy = 1160 MPa. Which of
the following gives the ultimate
moment capacity of the prestressed
beam. (kN-m)
0.85fc'
a
430
NA.-
(d-a/2)
· Ap=1000
250

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