1. 地(di)漏

 廁(ce)所、盥洗室、衛生間及(ji)其他房間需從(cong)地(di)(di)面(mian)(mian)排水時(shi)，應(ying)設置(zhi)地(di)(di)漏。地(di)(di)漏應(ying)設置(zhi)在易濺水的器具附近及(ji)地(di)(di)面(mian)(mian)的最低處(chu)。地(di)(di)漏的頂面(mian)(mian)標高應(ying)低于地(di)(di)面(mian)(mian)5mm~10mm.地(di)(di)漏水封深度不(bu)得小于50mm。

 淋浴室內地漏的直(zhi)徑，可按(an)表1-9來確定(ding)。

 a. 防返(fan)溢地漏

 地(di)漏(lou)是室內(nei)排水(shui)(shui)(shui)系統排水(shui)(shui)(shui)口位(wei)置最低處。當排水(shui)(shui)(shui)管(guan)堵塞時(shi)，污(wu)水(shui)(shui)(shui)（廢水(shui)(shui)(shui)）往往從(cong)地(di)漏(lou)處返(fan)溢而(er)造(zao)成室內(nei)進水(shui)(shui)(shui)，因此，建筑上不適用防返(fan)溢地(di)漏(lou)。

  防(fang)返(fan)溢地(di)(di)漏(lou)適用(yong)(yong)于建筑(zhu)排(pai)水(shui)系統(tong)中地(di)(di)面排(pai)水(shui)和(he)家用(yong)(yong)洗(xi)衣機排(pai)水(shui)。防(fang)返(fan)溢多用(yong)(yong)地(di)(di)漏(lou)可(ke)用(yong)(yong)于浴(yu)盆和(he)洗(xi)臉盆排(pai)水(shui)。圖1-19為防(fang)返(fan)溢多用(yong)(yong)地(di)(di)漏(lou)安裝示意(yi)圖。當地(di)(di)漏(lou)因堵塞而致(zhi)排(pai)水(shui)量減少(shao)時(shi)，可(ke)取出水(shui)封套，清洗(xi)地(di)(di)漏(lou)內部(bu)，便可(ke)恢復原狀態重新排(pai)水(shui)。

 b. 地漏安(an)裝(zhuang)程序(xu)和要求

 在樓(lou)板上預留安裝孔，放置地(di)漏，連接排水(shui)管道、調(diao)整(zheng)地(di)漏與地(di)面(mian)的高度，使地(di)漏的頂面(mian)標高低于地(di)面(mian)5mm~10mm,細石混(hun)凝土分(fen)層嵌(qian)實。安裝時應確保地(di)漏垂直度及頂面(mian)水(shui)平。

2. 存(cun)水彎

  存(cun)(cun)水(shui)(shui)(shui)(shui)彎(wan)(wan)是一種(zhong)特殊的(de)彎(wan)(wan)管(guan)(guan)。當衛(wei)生器(qi)(qi)具(ju)排(pai)(pai)水(shui)(shui)(shui)(shui)后(hou)，彎(wan)(wan)管(guan)(guan)里面存(cun)(cun)有一定(ding)深度的(de)水(shui)(shui)(shui)(shui)，這個深度稱(cheng)為水(shui)(shui)(shui)(shui)封(feng)深度。其作用是防(fang)止排(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)道系統(tong)所產生臭氣(qi)、有害氣(qi)體、可(ke)燃氣(qi)體以及小(xiao)蟲、小(xiao)動物通過衛(wei)生器(qi)(qi)具(ju)進入室內(nei)。當衛(wei)生器(qi)(qi)具(ju)、工業(ye)廢水(shui)(shui)(shui)(shui)受(shou)水(shui)(shui)(shui)(shui)器(qi)(qi)和生活(huo)污水(shui)(shui)(shui)(shui)管(guan)(guan)道，或其他(ta)可(ke)能產生有害氣(qi)體的(de)排(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)道連(lian)接(jie)時，必須在(zai)排(pai)(pai)水(shui)(shui)(shui)(shui)口(kou)以下設置存(cun)(cun)水(shui)(shui)(shui)(shui)彎(wan)(wan)。衛(wei)生器(qi)(qi)具(ju)構造內(nei)已有存(cun)(cun)水(shui)(shui)(shui)(shui)彎(wan)(wan)時，不必在(zai)排(pai)(pai)水(shui)(shui)(shui)(shui)口(kou)以下設置存(cun)(cun)水(shui)(shui)(shui)(shui)彎(wan)(wan)，如坐便器(qi)(qi)。存(cun)(cun)水(shui)(shui)(shui)(shui)彎(wan)(wan)的(de)水(shui)(shui)(shui)(shui)封(feng)深度一般不小(xiao)于50mm。存水彎有S形、P形和瓶形。