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Thermally induced strains and stresses in cast iron water distribution pipes: an experimental investigation

Jesson, DA, Le Page, BH, Mulheron, MJ, Smith, PA, Wallen, A, Cocks, R, Farrow, J and Whiter, JT (2010) Thermally induced strains and stresses in cast iron water distribution pipes: an experimental investigation Journal of Water Supply Research and Technology-Aqua, 59. pp. 221-229.

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Full-scale tests have been carried out on lengths of unrestrained and restrained plain and jointed distribution pipe sections (similar to 4 '' or similar to 100 mm internal diameter) in order to investigate the strains and loads generated in cast iron water distribution mains as a result of temperature fluctuations. Tests on unrestrained sections enabled the coefficient of thermal expansion of the pipe material to be measured. In a fully restrained situation, which can occur in a pipe section in service when the joints are locked, tensile stresses arise from a decrease in temperature ( in accordance with the predictions of a simple one-dimensional model) and it is shown that these stresses are sufficiently high to fracture a corroded pipe. In situations where the tensile stress leads to joint slippage, leakage through the joint is observed. Water leakage was also observed through the wall of corroded pipes that retained sufficient structural stability to carry load without failure.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
Jesson, DA
Le Page, BH
Mulheron, MJ
Smith, PA
Wallen, A
Cocks, R
Farrow, J
Whiter, JT
Date : 2010
DOI : 10.2166/aqua.2010.078
Additional Information : ©IWA Publishing 2010. The definitive peer-reviewed and edited version of this article is published in Journal of Water Supply: Research and Technology, 59 (4) 221-229 2010 DOI 10.2166/aqua.2010.078 and is available at
Depositing User : Symplectic Elements
Date Deposited : 13 Jan 2012 11:32
Last Modified : 31 Oct 2017 14:20

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