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Posted By Topic: Minimum depth of cover

Mar 31 2019 11:49

Interpreting table 3.6. CAT A system External to the building - does the 300mm additional depth of cover start after the concrete covering? E.g if the concrete covering is 100mm does it still require 300mm additonal depth or does anything over 75mm get deducted from the 300mm? Apologies for the confusing question.

Mar 31 2019 13:06

Between the Cat A system "and the upper surface of the ground or below any poured concrete laid on that surface"

So I take it as from the bottom of the concert regardless of depth of pour but it just has to be 75mm minimum


Mar 31 2019 18:28

Too right. Bugger. Cheers