濟(ji)南(nan)通(tong)(tong)(tong)風(feng)(feng)管(guan)(guan)道(dao)(dao)在(zai)工業(ye)及建(jian)筑(zhu)工程(cheng)中(zhong)(zhong)的(de)使用過程(cheng)中(zhong)(zhong)變得越來(lai)越科學，無論您是(shi)(shi)普通(tong)(tong)(tong)分還是(shi)(shi)工程(cheng)師，都會想(xiang)到施工過程(cheng)中(zhong)(zhong)都是(shi)(shi)小(xiao)管(guan)(guan)讓大管(guan)(guan)，小(xiao)管(guan)(guan)繞彎容(rong)易，造價低，這(zhe)屬于通(tong)(tong)(tong)風(feng)(feng)管(guan)(guan)道(dao)(dao)中(zhong)(zhong)的(de)避(bi)讓原則(ze)。很多人(ren)可能不知道(dao)(dao)通(tong)(tong)(tong)風(feng)(feng)管(guan)(guan)道(dao)(dao)工程(cheng)中(zhong)(zhong)還有這(zhe)種避(bi)讓原則(ze)。

　　①.常溫(wen)(wen)管(guan)(guan)(guan)讓(rang)高(gao)(低(di)(di))溫(wen)(wen)管(guan)(guan)(guan)(冷水(shui)管(guan)(guan)(guan)讓(rang)熱水(shui)管(guan)(guan)(guan)、非保(bao)溫(wen)(wen)管(guan)(guan)(guan)讓(rang)保(bao)溫(wen)(wen)管(guan)(guan)(guan))：通(tong)風管(guan)(guan)(guan)道工程高(gao)于常溫(wen)(wen)要考(kao)(kao)慮排(pai)氣(qi);低(di)(di)于常溫(wen)(wen)要考(kao)(kao)慮防結(jie)露(lu)保(bao)溫(wen)(wen)；

　　②.小管讓(rang)大管：小管繞彎(wan)容易，且造價低。氣體管讓(rang)水管：水流動(dong)的動(dong)力消耗大；

　　③.分支(zhi)管(guan)(guan)讓(rang)主干(gan)管(guan)(guan)：分支(zhi)管(guan)(guan)一(yi)般管(guan)(guan)徑較小(xiao)，通風管(guan)(guan)道工(gong)程避讓(rang)理由見第1條，另外還有(you)一(yi)點，分支(zhi)管(guan)(guan)的(de)影響范(fan)圍和重(zhong)要性不如主干(gan)管(guan)(guan)；

　　④.有壓(ya)管讓(rang)無壓(ya)管(壓(ya)力流(liu)管讓(rang)重力流(liu)管)：無壓(ya)管(或重力流(liu)管)改變坡度和流(liu)向，對流(liu)動影響較大；

　　⑤.氣體管(guan)讓水管(guan)：水流(liu)動(dong)的動(dong)力消耗大；

　　⑥.一般管道讓(rang)通(tong)風(feng)管：體(ti)積大，繞彎困難；

　　⑦.金屬管(guan)讓(rang)非(fei)金屬管(guan)：金屬管(guan)易彎曲(qu)、切割和連接；

　　⑧.給(gei)水管讓排(pai)水管：除了(le)上述第3條原因(yin)外，通(tong)常排(pai)水管管徑大，且(qie)水中雜質多(duo)；

　　⑨.低壓管讓高(gao)壓管：高(gao)壓管造(zao)價高(gao)，且(qie)強度要求也高(gao)；

　　⑩.有壓管(guan)(guan)讓(rang)無壓管(guan)(guan)(壓力(li)流(liu)管(guan)(guan)讓(rang)重力(li)流(liu)管(guan)(guan))：無壓管(guan)(guan)(或重力(li)流(liu)管(guan)(guan))改變(bian)坡(po)度和流(liu)向，對流(liu)動影響較大。