1. 地漏

 廁所、盥洗室、衛生間及(ji)其他房(fang)間需從地(di)(di)(di)面排水時(shi)，應(ying)設置地(di)(di)(di)漏。地(di)(di)(di)漏應(ying)設置在易(yi)濺水的器具(ju)附近及(ji)地(di)(di)(di)面的最低處。地(di)(di)(di)漏的頂面標高應(ying)低于(yu)地(di)(di)(di)面5mm~10mm.地(di)(di)(di)漏水封深度不得小于(yu)50mm。

 淋浴室(shi)內(nei)地漏的直徑(jing)，可按表1-9來確定。

 a. 防(fang)返溢地漏

 地漏(lou)是室內排(pai)水(shui)(shui)(shui)系統排(pai)水(shui)(shui)(shui)口位置最低處(chu)。當排(pai)水(shui)(shui)(shui)管(guan)堵塞時(shi)，污水(shui)(shui)(shui)（廢水(shui)(shui)(shui)）往往從地漏(lou)處(chu)返(fan)溢(yi)而(er)造成室內進水(shui)(shui)(shui)，因此，建筑上不適用防(fang)返(fan)溢(yi)地漏(lou)。

  防(fang)返溢(yi)地(di)(di)(di)漏(lou)(lou)適(shi)用(yong)于(yu)建筑(zhu)排(pai)(pai)(pai)水(shui)(shui)(shui)系統(tong)中地(di)(di)(di)面(mian)排(pai)(pai)(pai)水(shui)(shui)(shui)和(he)家用(yong)洗衣機排(pai)(pai)(pai)水(shui)(shui)(shui)。防(fang)返溢(yi)多(duo)用(yong)地(di)(di)(di)漏(lou)(lou)可用(yong)于(yu)浴盆(pen)(pen)和(he)洗臉盆(pen)(pen)排(pai)(pai)(pai)水(shui)(shui)(shui)。圖1-19為防(fang)返溢(yi)多(duo)用(yong)地(di)(di)(di)漏(lou)(lou)安裝(zhuang)示意圖。當(dang)地(di)(di)(di)漏(lou)(lou)因堵塞而致排(pai)(pai)(pai)水(shui)(shui)(shui)量減少(shao)時，可取出(chu)水(shui)(shui)(shui)封套，清洗地(di)(di)(di)漏(lou)(lou)內部(bu)，便可恢復(fu)原狀態(tai)重新(xin)排(pai)(pai)(pai)水(shui)(shui)(shui)。

 b. 地漏安裝程序和要(yao)求

 在樓(lou)板上預留(liu)安裝孔(kong)，放置地(di)漏(lou)，連接排水管道、調整地(di)漏(lou)與地(di)面(mian)(mian)的高(gao)度，使地(di)漏(lou)的頂面(mian)(mian)標高(gao)低于地(di)面(mian)(mian)5mm~10mm,細石混凝土分層嵌(qian)實(shi)。安裝時應確保地(di)漏(lou)垂直度及頂面(mian)(mian)水平。

2. 存水彎

  存水(shui)(shui)彎是(shi)(shi)一(yi)種特殊的(de)彎管。當(dang)衛(wei)生(sheng)器(qi)具(ju)排(pai)水(shui)(shui)后，彎管里面存有(you)一(yi)定深(shen)(shen)度(du)的(de)水(shui)(shui)，這個深(shen)(shen)度(du)稱為水(shui)(shui)封深(shen)(shen)度(du)。其(qi)作(zuo)用(yong)是(shi)(shi)防(fang)止排(pai)水(shui)(shui)管道系統所產生(sheng)臭(chou)氣(qi)、有(you)害氣(qi)體、可燃(ran)氣(qi)體以(yi)及小(xiao)蟲、小(xiao)動物通(tong)過衛(wei)生(sheng)器(qi)具(ju)進(jin)入室內。當(dang)衛(wei)生(sheng)器(qi)具(ju)、工業(ye)廢水(shui)(shui)受水(shui)(shui)器(qi)和生(sheng)活污水(shui)(shui)管道，或其(qi)他可能產生(sheng)有(you)害氣(qi)體的(de)排(pai)水(shui)(shui)管道連(lian)接時，必(bi)須在排(pai)水(shui)(shui)口以(yi)下(xia)設(she)置(zhi)存水(shui)(shui)彎。衛(wei)生(sheng)器(qi)具(ju)構造內已有(you)存水(shui)(shui)彎時，不必(bi)在排(pai)水(shui)(shui)口以(yi)下(xia)設(she)置(zhi)存水(shui)(shui)彎，如坐便器(qi)。存水(shui)(shui)彎的(de)水(shui)(shui)封深(shen)(shen)度(du)一(yi)般不小(xiao)于(yu)50mm。存水彎(wan)有(you)S形(xing)(xing)、P形(xing)(xing)和瓶形(xing)(xing)。