A test is conducted on a beam loaded by endcouples. The fibres at layer CD are found tolengthen by 0.03 mm and fibres at layer AB shortenby 0.09 mm is 20 mm gauge length as shown in thefigure. Taking E-2×10 N/mm², the flexural stressat top fibres would beCDAB50 mm100 mm(a) 900 N/mm² tensile(b) 1000 N/mm² tensile(c) 1200 N/mm² tensile(d) 1200 N/mm² compressive→→75 mm

Given data : increase in length of CD = 0.03 mm Decrease in length of AB is 0.09 mm Gauge length =…

A test is conducted on a beam loaded by end couples. The fibres at layer CD are found to lengthen by 0.03 mm and fibres at layer AB shorten by 0.09 mm is 20 mm gauge length as shown in the figure. Taking E-2x10' N/mm², the flexural stress at top fibres would be 50 mm

A test is conducted on a beam loaded by end couples. The fibres at layer CD are found to lengthen by 0.03 mm and fibres at layer AB shorten by 0.09 mm is 20 mm gauge length as shown in the figure. Taking E-2x10' N/mm², the flexural stress at top fibres would be 50 mm

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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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

A test is conducted on a beam loaded by end
couples. The fibres at layer CD are found to
lengthen by 0.03 mm and fibres at layer AB shorten
by 0.09 mm is 20 mm gauge length as shown in the
figure. Taking E-2×10 N/mm², the flexural stress
at top fibres would be
CD
A
B
50 mm
100 mm
(a) 900 N/mm² tensile
(b) 1000 N/mm² tensile
(c) 1200 N/mm² tensile
(d) 1200 N/mm² compressive
→→
75 mm

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