End grain epoxy gluing of threaded rod into timber pile
End grain epoxy gluing of threaded rod into timber pile
(OP)
I have a consultant who has specified this unusual method of fixing a steel joist (of a pedestrian bridge) to each timber pile support. The concerns that I have are that the timber will shrink over its life and that the 40 mm diameter hole will no longer secure the epoxy and its threaded rod to the pile.
I propose a secure mechanical fixing as an alternative. Does anyone have any comments?
I propose a secure mechanical fixing as an alternative. Does anyone have any comments?






RE: End grain epoxy gluing of threaded rod into timber pile
RE: End grain epoxy gluing of threaded rod into timber pile
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RE: End grain epoxy gluing of threaded rod into timber pile
I not sure what you exact situation is, however in most case shrinkage cause the section to get smaller, so I don't think the hole will get larger.
One other thought if you are dealing with solid sawn timbers they are probably at a much higher moisture content then glulams. Your bigger concern may be checking in the area of the hole.
RE: End grain epoxy gluing of threaded rod into timber pile
IPENZ Transactions, Vol. 24, No. 1/CE, 1997
RE: End grain epoxy gluing of threaded rod into timber pile
RE: End grain epoxy gluing of threaded rod into timber pile
The steel bars achieved large pull out and bending strength. But, my concern in still that the timber pile may have been moist / wet when the threaded rod was epoxied in place. I am unsure if epoxy will bond adequately with damp / moist timber?
Regards
RE: End grain epoxy gluing of threaded rod into timber pile
Mike McCann
MMC Engineering