ENVIRONMENT-FRIENDLY TRENCH COVER WHICH SECURES PERMEABILITY DUE TO A HIGH PERMEABILITY CREVICE MODULUS

摘要

PURPOSE: An environment-friendly trench cover which secures permeability due to a high permeability crevice modulus is provided to block the overflow of bad smell from a sewage drain buried under underground.;CONSTITUTION: An environment-friendly trench cover comprises a frame member(4), a plurality of pedestals(10), an insertion part(9) and a porous mat(2). The frame member accomplishes the outside frame body. A plurality of supporting boards is arranged between the frame members at a regular interval. A plurality of supporting boards forms a drain hole(7) between the vertical plates.;COPYRIGHT KIPO 2011