实际上哪个都需要的。把水疏走60cm,水就不会从地下再回来???
关键点:
1。坡度
2。地表一层粘性土,而非砂性土, 区域都是砂质土的话,此条没什么必要。
3。foundation wall waterproof
4。要在footing level, perforated drain pipe,而且畅通
At office now. have our drawing for your guys. This is for the situation when the groundwater is shallow and close to the footing. If the groundwater is far deep from the footing, inside moisture barrier and pipe, and outside core drain can be ignored. Out side pipe can be 100 mm
关键点:
1。坡度
2。地表一层粘性土,而非砂性土, 区域都是砂质土的话,此条没什么必要。
3。foundation wall waterproof
4。要在footing level, perforated drain pipe,而且畅通
At office now. have our drawing for your guys. This is for the situation when the groundwater is shallow and close to the footing. If the groundwater is far deep from the footing, inside moisture barrier and pipe, and outside core drain can be ignored. Out side pipe can be 100 mm