檢查口（checkhole，checkpipe）指的是帶有可開啟檢查蓋的短管，裝設(shè)在排水立管及較長水平管段上，作檢查和清通之用。 　　檢查口一般裝于立管，供立管與橫支管連接處有異物堵塞時清掏用，多層或高層建筑的排水立管上每隔一層就應(yīng)裝一個，檢查口間距不大于10m。但在{zd2}層和設(shè)有衛(wèi)生器具的兩層以上坡頂建筑物的{zg}層必須設(shè)置檢查口，平頂建筑可用通氣口代替檢查口。另外，立管如裝有乙字管，則應(yīng)在乙字管上部設(shè)檢查口。當(dāng)排水橫支管管段超過規(guī)定長度時，也應(yīng)設(shè)置檢查口。檢查口設(shè)置高度一般從地面至檢查口中心1m為宜。 

Examination of the mouth checkhole checkpipe refers to with nipple inspection cover can be opened, installed in the vertical drainage tube and long horizontal pipe, the inspection and clear. Examination of the mouth usually installed in the vertical tube, for vertical pipe and a cross pipe connections blockage when Qingtao with, multilayer or high-rise building water drainage riser on every layer should be packed in a, check hole spacing was less than 10m. But in the bottom and a sanitary ware two floors above the crest of a hill building top must check the settings in mouth, flat topped buildings available vent instead of inspection port. In addition, if the vertical pipe is equipped with a word tube, the upper part of the second word tube should be set up. When the drainage pipe exceeds the horizontal branch length, should also set up checkpoints. Check port setting height from the ground to the center of the 1m to check the appropriate.