根(gen)據施工(gong)(gong)(gong)(gong)地點，條件不(bu)(bu)同(tong)而不(bu)(bu)同(tong)，建(jian)筑(zhu)工(gong)(gong)(gong)(gong)程須全(quan)(quan)封(feng)(feng)(feng)閉(bi)，市區(qu)主(zhu)要(yao)道(dao)路(lu)或(huo)人(ren)流大的(de)不(bu)(bu)得低于2.5米(mi)，其余不(bu)(bu)得低于1.8米(mi)，一(yi)般半封(feng)(feng)(feng)閉(bi)多見于市政(zheng)工(gong)(gong)(gong)(gong)程，所謂(wei)的(de)半封(feng)(feng)(feng)閉(bi)指兩(liang)面(mian)(mian)(mian)或(huo)三(san)面(mian)(mian)(mian)設(she)(she)立圍(wei)(wei)(wei)擋，一(yi)面(mian)(mian)(mian)或(huo)兩(liang)面(mian)(mian)(mian)開放，便于施工(gong)(gong)(gong)(gong)機具材料的(de)進出。具體(ti)要(yao)怎么(me)設(she)(she)置根(gen)據招標(biao)文件、圖紙、現(xian)場(chang)環境，施工(gong)(gong)(gong)(gong)組(zu)織設(she)(she)計(ji)在(zai)保證安全(quan)(quan)的(de)情況下來(lai)確定。舉個例(li)子，假設(she)(she)市政(zheng)工(gong)(gong)(gong)(gong)程在(zai)鬧市，一(yi)個道(dao)路(lu)維修工(gong)(gong)(gong)(gong)程，半幅開放交(jiao)通，半幅維修，這個時候就(jiu)需要(yao)全(quan)(quan)封(feng)(feng)(feng)閉(bi)，保證不(bu)(bu)會有行人(ren)誤入而引發(fa)危(wei)險。再假設(she)(she)一(yi)條新建(jian)道(dao)路(lu)位于郊區(qu)，一(yi)端(duan)與老(lao)路(lu)相接，另一(yi)端(duan)為野地，那么(me)只需要(yao)在(zai)新老(lao)路(lu)交(jiao)接處(chu)設(she)(she)立單面(mian)(mian)(mian)的(de)圍(wei)(wei)(wei)墻(qiang)和一(yi)扇(shan)門即(ji)可(ke)，其余三(san)面(mian)(mian)(mian)可(ke)以不(bu)(bu)封(feng)(feng)(feng)閉(bi)。全(quan)(quan)封(feng)(feng)(feng)閉(bi)圍(wei)(wei)(wei)擋：將(jiang)整個施工(gong)(gong)(gong)(gong)范圍(wei)(wei)(wei)用硬質材料圍(wei)(wei)(wei)起來(lai)，組(zu)成(cheng)全(quan)(quan)封(feng)(feng)(feng)閉(bi)圍(wei)(wei)(wei)墻(qiang)半封(feng)(feng)(feng)閉(bi)：有一(yi)面(mian)(mian)(mian)或(huo)多個面(mian)(mian)(mian)不(bu)(bu)設(she)(she)圍(wei)(wei)(wei)擋的(de)，即(ji)為半封(feng)(feng)(feng)閉(bi)。

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