" ]0 U0 s) w9 C9 u; l7 K. PA sump pump is part of a building's foundation drainage system and it has been a requirement since 1988." M8 z4 j/ J8 q8 Y9 h2 R
% P; |) r# B: D/ D0 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。 / b/ {6 W8 g" _) o/ m% Q$ d0 F; ?- T
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.