' X7 @- g# l9 I5 B) K4 AA sump pump is part of a building's foundation drainage system and it has been a requirement since 1988. 6 H$ ?* S) M$ S3 B; |. g% C 6 M( p$ j% K: z, q4 q) z! J5 `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。 A: ]) R- z. P! ^% ^( t" F5 e% v
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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.