I am installing a couple of small plastic manholes/inspection chambers about
325mm dia.
What is the proper way to seal between the riser rings for a water test?
The rings are a push fit without the gaskets of the larger diameter chambers..
mark
Sealing plastic manhole rings
Sep 04, 2012
1 Replies
325mm dia.
They don't need sealing - the bottom one will be sat on concrete or a plastic moulded base, and the next one up will be about 150mm above this. If the manhole should ever fill up, a small amount of leakage into the soil is the least of your worries
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