本帖最后由 WeSay 于 2009-8-19 22:47 编辑 . y, r1 R7 c- k! D$ n( w1 E* x( v: u3 T$ z# o
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.+ k. z: N4 m( H3 s9 `; ^
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。 * D- [+ @: W. J) T* d# Q- z. s @ ~6 J9 ~& ]/ O1 n, `
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.