1. 地(di)漏(lou)

 廁所、盥洗室(shi)、衛生(sheng)間及其(qi)他房間需從地(di)面排(pai)水時，應設(she)置地(di)漏(lou)。地(di)漏(lou)應設(she)置在易濺水的器具附近及地(di)面的最低處。地(di)漏(lou)的頂面標(biao)高應低于地(di)面5mm~10mm.地(di)漏(lou)水封深度不得小于50mm。

 淋浴室(shi)內地漏的直徑，可按表(biao)1-9來(lai)確定(ding)。

 a. 防(fang)返溢(yi)地(di)漏

 地漏是室內(nei)排水(shui)系統(tong)排水(shui)口(kou)位(wei)置最(zui)低處。當排水(shui)管(guan)堵塞時，污(wu)水(shui)（廢水(shui)）往(wang)往(wang)從(cong)地漏處返(fan)溢(yi)而造(zao)成室內(nei)進水(shui)，因(yin)此(ci)，建(jian)筑(zhu)上不適用防返(fan)溢(yi)地漏。

  防返(fan)溢地(di)(di)漏(lou)(lou)適用(yong)于建筑排水(shui)(shui)系統中(zhong)地(di)(di)面排水(shui)(shui)和(he)家用(yong)洗衣(yi)機排水(shui)(shui)。防返(fan)溢多用(yong)地(di)(di)漏(lou)(lou)可(ke)用(yong)于浴盆和(he)洗臉(lian)盆排水(shui)(shui)。圖1-19為防返(fan)溢多用(yong)地(di)(di)漏(lou)(lou)安裝示意圖。當地(di)(di)漏(lou)(lou)因堵塞而致(zhi)排水(shui)(shui)量(liang)減少時(shi)，可(ke)取出水(shui)(shui)封套，清洗地(di)(di)漏(lou)(lou)內部，便可(ke)恢復原狀(zhuang)態重新(xin)排水(shui)(shui)。

 b. 地漏安裝程序和要求

 在樓板上預(yu)留(liu)安裝(zhuang)孔，放置地(di)漏(lou)，連(lian)接排水(shui)管道、調(diao)整地(di)漏(lou)與地(di)面(mian)的(de)高(gao)度(du)，使地(di)漏(lou)的(de)頂面(mian)標(biao)高(gao)低于地(di)面(mian)5mm~10mm,細石混凝土分層嵌實。安裝(zhuang)時應確保地(di)漏(lou)垂直度(du)及頂面(mian)水(shui)平(ping)。

2. 存(cun)水彎

  存(cun)水(shui)(shui)(shui)(shui)(shui)(shui)彎(wan)是(shi)一種特殊(shu)的彎(wan)管(guan)。當衛(wei)(wei)生(sheng)(sheng)(sheng)器(qi)具(ju)排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)(shui)后(hou)，彎(wan)管(guan)里面存(cun)有(you)一定深度(du)的水(shui)(shui)(shui)(shui)(shui)(shui)，這個深度(du)稱為(wei)水(shui)(shui)(shui)(shui)(shui)(shui)封深度(du)。其作用是(shi)防止排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)(shui)管(guan)道(dao)系(xi)統所產生(sheng)(sheng)(sheng)臭氣、有(you)害(hai)(hai)氣體、可燃氣體以及小(xiao)蟲、小(xiao)動物(wu)通過(guo)衛(wei)(wei)生(sheng)(sheng)(sheng)器(qi)具(ju)進入室內(nei)。當衛(wei)(wei)生(sheng)(sheng)(sheng)器(qi)具(ju)、工業廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)受(shou)水(shui)(shui)(shui)(shui)(shui)(shui)器(qi)和(he)生(sheng)(sheng)(sheng)活污(wu)水(shui)(shui)(shui)(shui)(shui)(shui)管(guan)道(dao)，或其他可能(neng)產生(sheng)(sheng)(sheng)有(you)害(hai)(hai)氣體的排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)(shui)管(guan)道(dao)連接時(shi)(shi)，必(bi)須(xu)在(zai)(zai)排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)(shui)口以下(xia)(xia)設(she)置存(cun)水(shui)(shui)(shui)(shui)(shui)(shui)彎(wan)。衛(wei)(wei)生(sheng)(sheng)(sheng)器(qi)具(ju)構造內(nei)已(yi)有(you)存(cun)水(shui)(shui)(shui)(shui)(shui)(shui)彎(wan)時(shi)(shi)，不必(bi)在(zai)(zai)排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)(shui)口以下(xia)(xia)設(she)置存(cun)水(shui)(shui)(shui)(shui)(shui)(shui)彎(wan)，如坐便器(qi)。存(cun)水(shui)(shui)(shui)(shui)(shui)(shui)彎(wan)的水(shui)(shui)(shui)(shui)(shui)(shui)封深度(du)一般不小(xiao)于50mm。存(cun)水彎有(you)S形、P形和瓶形。