本帖最后由 WeSay 于 2009-8-19 22:47 编辑 " }- B: k& S/ I8 H8 h; j( r" e* {0 `
A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.* f& k5 I0 u1 I9 i/ {, {
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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+ |# o$ t6 h/ o* m$ c' Q 3 V8 x0 E! d4 O8 h" t0 Z5 Y7 P% z2 \7 nIn 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.