根據施(shi)工(gong)(gong)(gong)地點，條件不同(tong)而不同(tong)，建筑(zhu)工(gong)(gong)(gong)程(cheng)(cheng)須全(quan)封(feng)(feng)閉，市區(qu)主要道路或(huo)人流大(da)的(de)不得低于(yu)2.5米，其余不得低于(yu)1.8米，一般半(ban)(ban)(ban)封(feng)(feng)閉多見于(yu)市政(zheng)工(gong)(gong)(gong)程(cheng)(cheng)，所謂的(de)半(ban)(ban)(ban)封(feng)(feng)閉指兩面(mian)(mian)(mian)或(huo)三面(mian)(mian)(mian)設(she)(she)立(li)圍(wei)擋，一面(mian)(mian)(mian)或(huo)兩面(mian)(mian)(mian)開放(fang)，便于(yu)施(shi)工(gong)(gong)(gong)機具材料的(de)進出。具體要怎么設(she)(she)置根據招(zhao)標文(wen)件、圖紙、現場環境，施(shi)工(gong)(gong)(gong)組織(zhi)設(she)(she)計在(zai)(zai)保證(zheng)安全(quan)的(de)情(qing)況下來(lai)確(que)定。舉個(ge)(ge)例子，假設(she)(she)市政(zheng)工(gong)(gong)(gong)程(cheng)(cheng)在(zai)(zai)鬧市，一個(ge)(ge)道路維(wei)修工(gong)(gong)(gong)程(cheng)(cheng)，半(ban)(ban)(ban)幅(fu)開放(fang)交通，半(ban)(ban)(ban)幅(fu)維(wei)修，這個(ge)(ge)時候就需(xu)要全(quan)封(feng)(feng)閉，保證(zheng)不會(hui)有行人誤入而引發(fa)危險。再(zai)假設(she)(she)一條新(xin)(xin)建道路位于(yu)郊區(qu)，一端與老(lao)(lao)路相接，另(ling)一端為野地，那么只需(xu)要在(zai)(zai)新(xin)(xin)老(lao)(lao)路交接處設(she)(she)立(li)單面(mian)(mian)(mian)的(de)圍(wei)墻(qiang)和一扇(shan)門即(ji)可，其余三面(mian)(mian)(mian)可以不封(feng)(feng)閉。全(quan)封(feng)(feng)閉圍(wei)擋：將整個(ge)(ge)施(shi)工(gong)(gong)(gong)范圍(wei)用硬質材料圍(wei)起(qi)來(lai)，組成全(quan)封(feng)(feng)閉圍(wei)墻(qiang)半(ban)(ban)(ban)封(feng)(feng)閉：有一面(mian)(mian)(mian)或(huo)多個(ge)(ge)面(mian)(mian)(mian)不設(she)(she)圍(wei)擋的(de)，即(ji)為半(ban)(ban)(ban)封(feng)(feng)閉。

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