How to organize running water in Shanghai deep foundation pit

Deep foundation pit in Shanghai organizes running water through drainage riser. Considering the safety of the drainage system of Shanghai Shenkeng Hotel, in order to further improve the drainage capacity of the offset pipes, the toilet drainage of Shenkeng Hotel finally adopts the drainage mode of setting two main drainage risers for each tube well, the sewage and waste of the risers are merged, the sewage and waste of the branch pipes are separated, and the single and double floors are staggered with drainage risers. Therefore, deep pits in Shanghai organize flowing water through drainage risers.