Caustic fluid blocking member in the base of a manhole
作者： Julian P. Trangsrud
DOI:
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摘要: A base for a manhole or catch basin structure having an embedded plastic canal-bed liner and corresponding blocking member hood. The has annular, outwardly extending flange which becomes in sidewall of the to form unitary when concrete is poured. not subject delamination from includes bosses additional anchoring base. hood serve protect sidewalls corrosive fluids, thus useful life structure. may be secured engaged sealed rim liner.
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