本帖最后由 WeSay 于 2009-8-19 22:47 编辑 % G' B0 O7 L3 k$ _0 @
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A sump pump is part of a building's foundation drainage system and it has been a requirement since 1988. ) T6 V: V6 C: o. S2 i; f/ m1 m, I, U" D% E9 t http://www.edmonton.ca/for_resid ... ps-residential.aspx
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( i6 G' b ^' v7 y+ ~9 T5 ~9 q/ D# l! I! _" [
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.