% X+ V N6 K( j" W/ f& _7 gA sump pump is part of a building's foundation drainage system and it has been a requirement since 1988.7 E L( K5 l6 R2 K$ f3 h
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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。$ ^# U( j3 V; R9 l" G7 l9 }+ a' S
0 j5 P3 z- s) Q: w( n: WIn 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.