本帖最后由 WeSay 于 2009-8-19 22:47 编辑 + J1 B0 U0 }! Y" _ ) N' c N f2 V4 a, C. ZA sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.& P2 `( J$ o# @+ M: [
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。) N* \7 n7 T' V7 K
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In 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.