本帖最后由 WeSay 于 2009-8-19 22:47 编辑 6 t5 A5 |! K7 p9 C' d% v! C
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A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.# n! Q% v8 k5 Z9 ^! x- [
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。 4 h8 I9 U+ N/ I- k5 x3 k ( r+ o: \) u; i! k5 ~6 _. Z; cIn 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.