本帖最后由 WeSay 于 2009-8-19 22:47 编辑 6 S0 |2 z, G5 i9 a& H) e( x$ V5 _0 ?1 j: R! G- I
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.; h! C" j' p0 M( m2 n
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。 " s/ Q t# F6 h: Q8 l7 o& a* G % A# G4 c9 r. G; lIn 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.