本帖最后由 WeSay 于 2009-8-19 22:47 编辑 & H: e$ K' h) L; h6 J- n. E
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A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.+ X$ W6 r2 k6 b' ?
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。 7 b x' @* a! n9 v3 E0 i* [ Q7 ~7 t
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.