根(gen)(gen)據施工(gong)(gong)(gong)(gong)地(di)點，條(tiao)件(jian)不同而(er)不同，建筑工(gong)(gong)(gong)(gong)程須全(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)，市區主(zhu)要(yao)道(dao)路(lu)或(huo)人流(liu)大的(de)(de)不得低于2.5米，其余不得低于1.8米，一(yi)般(ban)半(ban)封(feng)(feng)閉(bi)(bi)(bi)多見于市政工(gong)(gong)(gong)(gong)程，所謂的(de)(de)半(ban)封(feng)(feng)閉(bi)(bi)(bi)指兩面(mian)或(huo)三面(mian)設(she)(she)立(li)圍(wei)擋，一(yi)面(mian)或(huo)兩面(mian)開放，便于施工(gong)(gong)(gong)(gong)機具(ju)材料的(de)(de)進出。具(ju)體要(yao)怎么(me)設(she)(she)置根(gen)(gen)據招標(biao)文件(jian)、圖(tu)紙、現場環境，施工(gong)(gong)(gong)(gong)組(zu)織設(she)(she)計在保證安全(quan)(quan)的(de)(de)情況(kuang)下來確定。舉個(ge)(ge)例子(zi)，假設(she)(she)市政工(gong)(gong)(gong)(gong)程在鬧市，一(yi)個(ge)(ge)道(dao)路(lu)維(wei)(wei)修工(gong)(gong)(gong)(gong)程，半(ban)幅開放交(jiao)通，半(ban)幅維(wei)(wei)修，這個(ge)(ge)時候就需要(yao)全(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)，保證不會有(you)行人誤(wu)入而(er)引發危險。再假設(she)(she)一(yi)條(tiao)新建道(dao)路(lu)位(wei)于郊(jiao)區，一(yi)端(duan)與(yu)老路(lu)相(xiang)接，另一(yi)端(duan)為野(ye)地(di)，那(nei)么(me)只需要(yao)在新老路(lu)交(jiao)接處設(she)(she)立(li)單面(mian)的(de)(de)圍(wei)墻(qiang)和一(yi)扇門即(ji)可，其余三面(mian)可以不封(feng)(feng)閉(bi)(bi)(bi)。全(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)圍(wei)擋：將(jiang)整個(ge)(ge)施工(gong)(gong)(gong)(gong)范圍(wei)用(yong)硬質(zhi)材料圍(wei)起來，組(zu)成(cheng)全(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)圍(wei)墻(qiang)半(ban)封(feng)(feng)閉(bi)(bi)(bi)：有(you)一(yi)面(mian)或(huo)多個(ge)(ge)面(mian)不設(she)(she)圍(wei)擋的(de)(de)，即(ji)為半(ban)封(feng)(feng)閉(bi)(bi)(bi)。

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