本帖最后由 WeSay 于 2009-8-19 22:47 编辑 % V. G h2 w: A; n( ?7 j7 y, y; y2 D: u
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.! I* ?. @3 N6 o; z+ e# W0 u+ `
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。) @ F: z% ^2 O: N. ~8 P
! W, R/ g! ?; x4 g; T2 h5 r7 GIn 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.