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上海PE給水管(guan)的選(xuan)用及接法

三、建(jian)筑小區(qu)排水管材及(ji)接口及(ji)基礎選用

1.排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)材應(ying)(ying)根據排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)性(xing)(xing)質、成分、溫度、地(di)下(xia)水(shui)(shui)(shui)(shui)侵蝕性(xing)(xing)、外部荷(he)載、土(tu)壤情況和(he)施工條件(jian)等因素因地(di)制宜就(jiu)地(di)取材，條件(jian)許可(ke)的(de)情況下(xia)應(ying)(ying)優先采(cai)用(yong)(yong)(yong)埋地(di)塑料(liao)(liao)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)，并應(ying)(ying)按下(xia)列(lie)規定選用(yong)(yong)(yong)：重力流排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)宜選用(yong)(yong)(yong)埋地(di)塑料(liao)(liao)管(guan)(guan)(guan)(guan)、混凝土(tu)管(guan)(guan)(guan)(guan)或(huo)鋼筋混凝土(tu)管(guan)(guan)(guan)(guan)；排(pai)(pai)(pai)到(dao)小(xiao)區污水(shui)(shui)(shui)(shui)處(chu)理裝置的(de)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)宜采(cai)用(yong)(yong)(yong)塑料(liao)(liao)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)；穿越管(guan)(guan)(guan)(guan)溝、河道(dao)等特殊(shu)地(di)段(duan)或(huo)承壓的(de)管(guan)(guan)(guan)(guan)段(duan)可(ke)采(cai)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)或(huo)鑄鐵(tie)管(guan)(guan)(guan)(guan)，若(ruo)采(cai)用(yong)(yong)(yong)塑料(liao)(liao)管(guan)(guan)(guan)(guan)應(ying)(ying)外加金(jin)屬套(tao)管(guan)(guan)(guan)(guan)（套(tao)管(guan)(guan)(guan)(guan)直徑較塑料(liao)(liao)管(guan)(guan)(guan)(guan)外徑大200mm）；當排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)溫度大于40度時應(ying)(ying)采(cai)用(yong)(yong)(yong)金(jin)屬排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)或(huo)耐高溫的(de)塑料(liao)(liao)管(guan)(guan)(guan)(guan)；輸(shu)送腐蝕性(xing)(xing)污水(shui)(shui)(shui)(shui)的(de)管(guan)(guan)(guan)(guan)道(dao)可(ke)采(cai)用(yong)(yong)(yong)塑料(liao)(liao)管(guan)(guan)(guan)(guan)；位于道(dao)路及車行(xing)道(dao)下(xia)塑料(liao)(liao)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)的(de)環向彎(wan)曲剛度不宜小(xiao)于8kN/平(ping)米，位于小(xiao)區非(fei)車行(xing)道(dao)及其它地(di)段(duan)下(xia)塑料(liao)(liao)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)(guan)的(de)環向彎(wan)曲剛度不宜小(xiao)于4kN/平(ping)米。

2.接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)：塑料排水管(guan)道承插(cha)橡(xiang)膠(jiao)圈、粘(zhan)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)、熔接(jie)(jie)(jie)(jie)(jie)(jie)(jie)、卡箍等(deng)連(lian)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)方式(shi)，應(ying)根(gen)據管(guan)道材料性(xing)質和(he)管(guan)徑大(da)小選用(yong)。混(hun)凝(ning)土、鋼(gang)筋混(hun)凝(ning)土管(guan)有(you)橡(xiang)膠(jiao)圈、鋼(gang)絲網水泥砂漿抹(mo)帶(dai)、現(xian)澆混(hun)凝(ning)土套環(huan)和(he)膨(peng)脹水泥砂漿等(deng)四種接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)形(xing)式(shi)，應(ying)根(gen)據管(guan)口(kou)(kou)形(xing)式(shi)等(deng)因素確定；鑄鐵管(guan)可采(cai)用(yong)橡(xiang)膠(jiao)圈柔(rou)性(xing)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)和(he)水泥砂漿接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)；鋼(gang)管(guan)應(ying)采(cai)用(yong)焊接(jie)(jie)(jie)(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)；污水及(ji)合流排水管(guan)道宜選用(yong)柔(rou)性(xing)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)；當管(guan)道穿過粉砂、細砂層并在(zai)*地下水位下，或在(zai)地震(zhen)設防烈度(du)為(wei)8度(du)設防區時(shi)，應(ying)采(cai)用(yong)柔(rou)性(xing)接(jie)(jie)(jie)(jie)(jie)(jie)(jie)口(kou)(kou)。

3.基(ji)礎(chu)：采用(yong)塑料排水(shui)管(guan)道時(shi)，一(yi)般均采用(yong)砂石基(ji)礎(chu)。采用(yong)混凝(ning)(ning)土、鋼筋混凝(ning)(ning)土承插口(kou)(kou)管(guan)，地基(ji)承載力特(te)征值fak不小于(yu)100kpa時(shi)，宜(yi)優先采用(yong)橡(xiang)膠圈接口(kou)(kou)、砂石（或土弧）基(ji)礎(chu)，fak小于(yu)100kpa時(shi)，應(ying)(ying)計算確定；采用(yong)混凝(ning)(ning)土、鋼筋混凝(ning)(ning)土管(guan)，剛性接口(kou)(kou)時(shi)，應(ying)(ying)采用(yong)混凝(ning)(ning)土帶(dai)狀基(ji)礎(chu)，但需(xu)每(mei)20~25m設(she)一(yi)個柔性接口(kou)(kou)，且該處混凝(ning)(ning)土基(ji)礎(chu)設(she)變形縫。

四、給水管道管材(cai)

1.埋地管(guan)(guan)(guan)(guan)道的管(guan)(guan)(guan)(guan)材，應(ying)具有(you)耐腐性和能承受相應(ying)的地面荷載的能力。當(dang)DN>75mm時(shi)可(ke)采(cai)(cai)用球墨鑄鐵管(guan)(guan)(guan)(guan)、給(gei)水(shui)塑(su)(su)料(liao)管(guan)(guan)(guan)(guan)和復合管(guan)(guan)(guan)(guan)；當(dang)不大(da)于75時(shi)，可(ke)采(cai)(cai)用塑(su)(su)料(liao)管(guan)(guan)(guan)(guan)、復合管(guan)(guan)(guan)(guan)或經(jing)穩靠防腐處理的鋼管(guan)(guan)(guan)(guan)。小區(qu)室外埋地敷設的塑(su)(su)料(liao)管(guan)(guan)(guan)(guan)應(ying)采(cai)(cai)用硬聚氯乙烯(xi)（PVC-U）給(gei)水(shui)管(guan)(guan)(guan)(guan)和聚乙烯(xi)（PE）給(gei)水(shui)管(guan)(guan)(guan)(guan)。

室外明敷管(guan)道一般不宜采用鋁塑復合(he)管(guan)、給水塑料管(guan)。
室內(nei)(nei)(nei)給(gei)(gei)水(shui)管(guan)(guan)(guan)(guan)(guan)應選(xuan)用(yong)(yong)耐腐蝕和安裝連接方便(bian)穩(wen)靠的管(guan)(guan)(guan)(guan)(guan)材。明(ming)敷(fu)或嵌墻(qiang)敷(fu)設一般可采(cai)用(yong)(yong)塑(su)料給(gei)(gei)水(shui)管(guan)(guan)(guan)(guan)(guan)、復(fu)(fu)合(he)(he)管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)薄(bo)(bo)壁不(bu)銹鋼管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)不(bu)銅管(guan)(guan)(guan)(guan)(guan)、經穩(wen)靠防腐處(chu)理(li)的鋼管(guan)(guan)(guan)(guan)(guan)。敷(fu)設在地面(mian)找平層(ceng)內(nei)(nei)(nei)宜采(cai)用(yong)(yong)建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)硬聚(ju)氯(lv)乙(yi)烯管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)聚(ju)丙烯管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)聚(ju)乙(yi)烯管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)氯(lv)化(hua)聚(ju)氯(lv)乙(yi)烯管(guan)(guan)(guan)(guan)(guan)，鋁(lv)塑(su)復(fu)(fu)合(he)(he)管(guan)(guan)(guan)(guan)(guan)、建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)超薄(bo)(bo)壁不(bu)銹鋼塑(su)料復(fu)(fu)合(he)(he)管(guan)(guan)(guan)(guan)(guan)，管(guan)(guan)(guan)(guan)(guan)道直徑不(bu)得大于DN20~DN25。高層(ceng)建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)立管(guan)(guan)(guan)(guan)(guan)不(bu)宜采(cai)用(yong)(yong)塑(su)料管(guan)(guan)(guan)(guan)(guan)。給(gei)(gei)水(shui)泵房內(nei)(nei)(nei)及輸水(shui)干(gan)管(guan)(guan)(guan)(guan)(guan)宜采(cai)用(yong)(yong)法蘭連接的建(jian)(jian)筑(zhu)(zhu)給(gei)(gei)水(shui)鋼塑(su)復(fu)(fu)合(he)(he)管(guan)(guan)(guan)(guan)(guan)和給(gei)(gei)水(shui)鋼塑(su)復(fu)(fu)合(he)(he)壓(ya)力(li)管(guan)(guan)(guan)(guan)(guan)。

水(shui)(shui)(shui)(shui)池（箱(xiang)(xiang)、塔）內浸水(shui)(shui)(shui)(shui)部(bu)分管(guan)(guan)(guan)道宜采用(yong)(yong)耐(nai)腐蝕(shi)(shi)金屬(shu)管(guan)(guan)(guan)材或(huo)內外(wai)涂塑(su)(su)(su)焊接鋼管(guan)(guan)(guan)及管(guan)(guan)(guan)件(jian)(jian)（包括法(fa)蘭、水(shui)(shui)(shui)(shui)泵吸水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)、溢水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)、吸水(shui)(shui)(shui)(shui)喇叭、溢水(shui)(shui)(shui)(shui)漏斗等）。進(jin)出管(guan)(guan)(guan)及泄水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)宜采用(yong)(yong)管(guan)(guan)(guan)內外(wai)壁及管(guan)(guan)(guan)口端涂塑(su)(su)(su)鋼管(guan)(guan)(guan)段或(huo)球墨鑄(zhu)鐵管(guan)(guan)(guan)（一(yi)般用(yong)(yong)于水(shui)(shui)(shui)(shui)塔）或(huo)塑(su)(su)(su)料(liao)(liao)管(guan)(guan)(guan)（一(yi)般用(yong)(yong)于水(shui)(shui)(shui)(shui)池、水(shui)(shui)(shui)(shui)箱(xiang)(xiang)）。當采用(yong)(yong)塑(su)(su)(su)料(liao)(liao)進(jin)水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)時，其安裝杠桿(gan)式進(jin)水(shui)(shui)(shui)(shui)浮(fu)球閥(fa)端部(bu)的管(guan)(guan)(guan)段應采用(yong)(yong)耐(nai)用(yong)(yong)消費(fei)品(pin)腐蝕(shi)(shi)金屬(shu)管(guan)(guan)(guan)及管(guan)(guan)(guan)件(jian)(jian)，浮(fu)球閥(fa)等進(jin)水(shui)(shui)(shui)(shui)設備的重量不得(de)作用(yong)(yong)在管(guan)(guan)(guan)道上(shang)。一(yi)般進(jin)出水(shui)(shui)(shui)(shui)管(guan)(guan)(guan)為(wei)塑(su)(su)(su)料(liao)(liao)管(guan)(guan)(guan)時宜將從水(shui)(shui)(shui)(shui)池（箱(xiang)(xiang)）至*個閥(fa)門的管(guan)(guan)(guan)段改為(wei)耐(nai)腐蝕(shi)(shi)的金屬(shu)管(guan)(guan)(guan)。

2.采(cai)用(yong)塑料管時，其供水(shui)系統壓力一般不(bu)應大于0.60MPA（PVC-U、PP-R、PP-B管可不(bu)大于1.0MPA）水(shui)溫不(bu)應超過該管材的有關規定。

五、雨(yu)水管(guan)材與附件

1.屋面雨水系統應采用承(cheng)壓管道、管配件（包括伸縮器）和接口，額定壓力(li)不小(xiao)于建(jian)筑高度靜水壓。內(nei)排(pai)水系統、虹吸(xi)系統的管道及接口還應能(neng)承(cheng)受(shou)0.9個大氣壓力(li)的真空(kong)負壓。

2.水泵提升(sheng)系統(tong)的排出管采用承壓(ya)管道、管件(jian)和接口(kou)，額定壓(ya)力不小(xiao)于水泵揚程的1.5倍(bei)。

3.高(gao)層建(jian)筑屋面(mian)雨(yu)(yu)水(shui)系統、水(shui)泵加壓排出(chu)管(guan)，其管(guan)道及接(jie)口應(ying)為承壓的金(jin)屬管(guan)、鋼塑復合管(guan)、承壓塑料管(guan)等。非金(jin)屬管(guan)材的抗環變形(xing)外壓力應(ying)大于0.15MPA。高(gao)層建(jian)筑室內雨(yu)(yu)水(shui)管(guan)道不得(de)使(shi)用重力流污廢水(shui)系統排水(shui)管(guan)材。

4.多層建筑屋面雨水(shui)(shui)系統(tong)、雨水(shui)(shui)集水(shui)(shui)池(chi)的(de)集水(shui)(shui)管道，可(ke)采用(yong)承壓較低的(de)管材、管件和接口，管材可(ke)用(yong)排(pai)水(shui)(shui)塑(su)料(liao)管、金屬管等。

5.雨水(shui)斗受日照(zhao)強烈，材質宜為金(jin)屬。