SeatworkThe beam shown is prestressed by using a bonded (stress relieved tendons) with a specified tensilestrength of prestressing tendons strength fpu=1350 MPa, fc'=35 MPa. The area of prestressedreinforcement in tension zone Aps=1000 mm?. The specific yield strength of prestressing tendonssd,foy=1160 MPa.а.What is the value of the stress in prestressed reinforcement at nominal strength (Aps)b.What is the value of the depth of the compression block.С.What is the ultimate moment capacity of the prestressed beam.0.85fc'430NA|(d-a/2)· A=1000T=Ap.Sps250

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The beam shown is prestressed by u strength of prestressing tendons stre

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 1.5.4P: A tensile test was performed on a metal specimen with a diameter of 1 2 inch and a gage length (the...

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Concept explainers

Composite Construction

Composite construction is the construction of structures in which two or more materials are used. Regarding structural engineering, composite construction is a construction where two materials are bound together in a technical manner such that both the materials act as a single unit to carry and transfer the load. The motives of composite construction are to increase the structural strength, make structures more aesthetic, and provide a sustainable environment.

Question

Seatwork
The beam shown is prestressed by using a bonded (stress relieved tendons) with a specified tensile
strength of prestressing tendons strength fpu=1350 MPa, fc'=35 MPa. The area of prestressed
reinforcement in tension zone Aps=1000 mm?. The specific yield strength of prestressing tendons
sd,
foy=1160 MPa.
а.
What is the value of the stress in prestressed reinforcement at nominal strength (Aps)
b.
What is the value of the depth of the compression block.
С.
What is the ultimate moment capacity of the prestressed beam.
0.85fc'
430
NA
|(d-a/2)
· A=1000
T=Ap.Sps
250

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