Collapse of a Car Park Canopy
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 4
Abstract
A completed car park canopy collapsed shortly after its completion. The structural system of the car park canopy was a T steel structure of unequal cantilevers connected to the ground at the base with eight 25-mm anchor bolts. The collapse was a progressive one starting with the steel structure located at one end of the roof. An investigation of the causes of collapse was carried out. Before the collapse, the maximum tension acting on an anchor bolt was not more than 10% of the tensile strength of the bolt. This investigation shows that the use of incompatible bolts and nuts such as in the case reported lead to the total loss of the tension capacity of anchor bolts in 3 days.
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References
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Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 26, 2013
Accepted: Dec 20, 2013
Published online: Dec 21, 2013
Published in print: Aug 1, 2014
Discussion open until: Oct 27, 2014
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