Question 1 – Temperature StressesThe railroad network in South Africa (Metrorail/Prasa) consists of steel rails of standardlength, 12 m, connected together. Due to the large variation in minimum and maximumseasonal temperatures in South Africa, a clearance of 3 mm is set (at 160C in winter)between the rails to accommodate expansion and contraction of the steel.1.1 Determine the stress that will be induced in the rails if the temperature rises to 360Cin the summer afternoons.1.2 Will this stress permanently damage the rails? Motivate your answer.(For steel: E = 200 GPa and α = 12×10-6/ OC)

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Answered: The railroad network in South Africa…

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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Question 1 – Temperature Stresses

The railroad network in South Africa (Metrorail/Prasa) consists of steel rails of standard
length, 12 m, connected together. Due to the large variation in minimum and maximum
seasonal temperatures in South Africa, a clearance of 3 mm is set (at 16⁰C in winter)
between the rails to accommodate expansion and contraction of the steel.
1.1 Determine the stress that will be induced in the rails if the temperature rises to 36⁰C
in the summer afternoons.
1.2 Will this stress permanently damage the rails? Motivate your answer.
(For steel: E = 200 GPa and α = 12×10-6/ ^OC)

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