Underwater Concrete (creating a crib for building a dock)
Underwater Concrete (creating a crib for building a dock)
(OP)
We are planning to construct a crib for the foundation of a dock in water that is approximately 6' deep. The crib will be approximately 10'(L) x 8'(W) x 6.5' (D). Can anyone provide me with suggestions on the best way to pour concrete underwater once the form has been constructed?
The lake bottom is rock and sand. There is no current to this lake. Is there a specific type of concrete that should be used? Would it be best to reinforce this structure? The lake does freeze and average ice thickness is approx. 8-12" annually.
The lake bottom is rock and sand. There is no current to this lake. Is there a specific type of concrete that should be used? Would it be best to reinforce this structure? The lake does freeze and average ice thickness is approx. 8-12" annually.





RE: Underwater Concrete (creating a crib for building a dock)
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Do you have plans and a permit?
RE: Underwater Concrete (creating a crib for building a dock)
Here is a somewhat dated article (1962) that describes the traditional way for placing concrete underwater with a what is called a tremie:
ftp://imgs.ebuild.com/woc/C620261.pdf
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RE: Underwater Concrete (creating a crib for building a dock)
RE: Underwater Concrete (creating a crib for building a dock)
You could still have some scour under your crib due to wave action from boat wakes, and the ice could shift things about.