本帖最后由 WeSay 于 2009-8-19 22:47 编辑 + p$ g; z- u3 a! p# `) u# w2 N9 \3 k& J' R7 N# L: W, F9 J4 e
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988., ` U9 I0 G5 e2 R/ H! ?4 `& P
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。" L! h _, g6 E2 s# L
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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.