1. 地漏

 廁所、盥洗室、衛生(sheng)間及(ji)其他(ta)房間需從(cong)地(di)(di)面排水(shui)時，應設置地(di)(di)漏。地(di)(di)漏應設置在易(yi)濺(jian)水(shui)的(de)器具附近(jin)及(ji)地(di)(di)面的(de)最低(di)(di)處。地(di)(di)漏的(de)頂(ding)面標高應低(di)(di)于(yu)地(di)(di)面5mm~10mm.地(di)(di)漏水(shui)封深度不得小于(yu)50mm。

 淋浴室內地漏的(de)直徑，可按表1-9來確定。

 a. 防返溢地漏

 地(di)漏(lou)是室(shi)內排水(shui)系統排水(shui)口(kou)位置最(zui)低處。當排水(shui)管堵(du)塞時，污(wu)水(shui)（廢水(shui)）往(wang)(wang)往(wang)(wang)從(cong)地(di)漏(lou)處返溢(yi)而造成室(shi)內進水(shui)，因此(ci)，建筑(zhu)上不適用防返溢(yi)地(di)漏(lou)。

  防(fang)返(fan)(fan)溢(yi)地(di)(di)漏(lou)(lou)(lou)適用(yong)于建(jian)筑(zhu)排(pai)(pai)水(shui)(shui)系(xi)統(tong)中地(di)(di)面排(pai)(pai)水(shui)(shui)和(he)家用(yong)洗衣機排(pai)(pai)水(shui)(shui)。防(fang)返(fan)(fan)溢(yi)多(duo)用(yong)地(di)(di)漏(lou)(lou)(lou)可用(yong)于浴(yu)盆和(he)洗臉盆排(pai)(pai)水(shui)(shui)。圖1-19為防(fang)返(fan)(fan)溢(yi)多(duo)用(yong)地(di)(di)漏(lou)(lou)(lou)安裝示意圖。當地(di)(di)漏(lou)(lou)(lou)因(yin)堵塞而致(zhi)排(pai)(pai)水(shui)(shui)量減少時，可取出水(shui)(shui)封套，清洗地(di)(di)漏(lou)(lou)(lou)內部(bu)，便可恢復原狀態重新排(pai)(pai)水(shui)(shui)。

 b. 地漏安裝程序和要(yao)求

 在樓板上預留安(an)裝孔，放置地(di)(di)漏(lou)(lou)(lou)，連接排水管道、調整(zheng)地(di)(di)漏(lou)(lou)(lou)與地(di)(di)面(mian)(mian)的(de)高(gao)度(du)，使(shi)地(di)(di)漏(lou)(lou)(lou)的(de)頂面(mian)(mian)標高(gao)低(di)于(yu)地(di)(di)面(mian)(mian)5mm~10mm,細石混凝土分層嵌實(shi)。安(an)裝時應確(que)保地(di)(di)漏(lou)(lou)(lou)垂直度(du)及(ji)頂面(mian)(mian)水平。

2. 存水彎(wan)

  存水(shui)(shui)(shui)(shui)(shui)彎(wan)是(shi)一(yi)種特殊的(de)(de)彎(wan)管。當衛(wei)(wei)生(sheng)器(qi)具(ju)(ju)排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)后，彎(wan)管里面(mian)存有一(yi)定(ding)深度的(de)(de)水(shui)(shui)(shui)(shui)(shui)，這個(ge)深度稱為水(shui)(shui)(shui)(shui)(shui)封(feng)深度。其作用(yong)是(shi)防止排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)管道系(xi)統所(suo)產(chan)生(sheng)臭(chou)氣(qi)、有害(hai)(hai)氣(qi)體、可(ke)燃(ran)氣(qi)體以及小(xiao)蟲、小(xiao)動物通過衛(wei)(wei)生(sheng)器(qi)具(ju)(ju)進入(ru)室(shi)內(nei)(nei)。當衛(wei)(wei)生(sheng)器(qi)具(ju)(ju)、工業廢水(shui)(shui)(shui)(shui)(shui)受水(shui)(shui)(shui)(shui)(shui)器(qi)和生(sheng)活污水(shui)(shui)(shui)(shui)(shui)管道，或其他可(ke)能產(chan)生(sheng)有害(hai)(hai)氣(qi)體的(de)(de)排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)管道連(lian)接時(shi)，必須在排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)口以下(xia)(xia)設(she)置存水(shui)(shui)(shui)(shui)(shui)彎(wan)。衛(wei)(wei)生(sheng)器(qi)具(ju)(ju)構(gou)造內(nei)(nei)已有存水(shui)(shui)(shui)(shui)(shui)彎(wan)時(shi)，不必在排(pai)(pai)水(shui)(shui)(shui)(shui)(shui)口以下(xia)(xia)設(she)置存水(shui)(shui)(shui)(shui)(shui)彎(wan)，如(ru)坐便(bian)器(qi)。存水(shui)(shui)(shui)(shui)(shui)彎(wan)的(de)(de)水(shui)(shui)(shui)(shui)(shui)封(feng)深度一(yi)般不小(xiao)于(yu)50mm。存(cun)水彎有S形(xing)、P形(xing)和瓶(ping)形(xing)。