本帖最后由 WeSay 于 2009-8-19 22:47 编辑 - W' `/ v; d: `5 Y 4 n2 U& A u. l5 W/ V) bA sump pump is part of a building's foundation drainage system and it has been a requirement since 1988., J; r7 G/ Z8 S$ ?
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。 2 a/ w1 b% c$ [- A" D' \- s8 T+ K( W$ ~7 M# K2 h' ?6 w; j2 Q
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.