本帖最后由 WeSay 于 2009-8-19 22:47 编辑 - ]! k4 n$ _% g5 h0 Q" Q- p+ y1 L# [
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.2 Y1 y/ G% {- b7 n7 e
你看看下面这段话。我看得一个房子也没有,不过我觉得应该不是大问题。95年的房子,如果地下室没有进过水,说明房子没问题。再者说了,好像是需要专家决定要不要修建。3 a. W) j6 p% H$ t
& K' `- S! @+ ^* pIn newer areas the sump pump discharges onto the ground, with the exception of areas that have a very high ground water table, or those adjacent to a lake, ravine or river. In those areas, sump pumps must connect to a storm service pipe to minimize soil erosion. A geotechnical engineer determines if this is necessary before the area is developed.