A rectangular concrete beam, 250mm and600mm deep, is prestressed by means of four-14mm diameter high-tensile bars located200mm from the soffit of the beam. If theeffective stress in the wires is 700N/mm^2,what is the maximum bending moment thatcan be applied to the section without causingtension at the bottom of the beam in kN/m?(Input magnitude only and round off to 2decimal places.)

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what is the maximum bending moment that can be applied to the section without causing tension at the bottom of the beam in kN/m?

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

Members with compression and bending

Compression members are structural elements that carry compressive axial force. They are the vertical members of a building that support beams and their design, which is governed by buckling and strength. Columns are known as struct or compression members, which are subjected to compressive forces. These members provide stiffness to the building and avoid any imperfection regarding the transfer of axial load. For instance, webs in a truss, braces in a framed structure, tiers, and so on.

Question

A rectangular concrete beam, 250mm and
600mm deep, is prestressed by means of four-
14mm diameter high-tensile bars located
200mm from the soffit of the beam. If the
effective stress in the wires is 700N/mm^2,
what is the maximum bending moment that
can be applied to the section without causing
tension at the bottom of the beam in kN/m?
(Input magnitude only and round off to 2
decimal places.)

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