根(gen)據(ju)施工(gong)(gong)(gong)地(di)點，條(tiao)件不(bu)同而(er)不(bu)同，建(jian)筑工(gong)(gong)(gong)程須(xu)全(quan)(quan)(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)，市(shi)區主要(yao)道(dao)路(lu)或人流大(da)的不(bu)得低于(yu)(yu)(yu)2.5米，其余不(bu)得低于(yu)(yu)(yu)1.8米，一(yi)(yi)般半(ban)(ban)封(feng)(feng)閉(bi)(bi)(bi)多(duo)(duo)見(jian)于(yu)(yu)(yu)市(shi)政工(gong)(gong)(gong)程，所謂(wei)的半(ban)(ban)封(feng)(feng)閉(bi)(bi)(bi)指(zhi)兩面(mian)(mian)(mian)或三面(mian)(mian)(mian)設(she)立(li)(li)圍擋，一(yi)(yi)面(mian)(mian)(mian)或兩面(mian)(mian)(mian)開放，便于(yu)(yu)(yu)施工(gong)(gong)(gong)機具(ju)材(cai)料的進出。具(ju)體要(yao)怎么設(she)置根(gen)據(ju)招標文件、圖紙(zhi)、現場環境(jing)，施工(gong)(gong)(gong)組織設(she)計在保證(zheng)安(an)全(quan)(quan)(quan)(quan)的情況下來確定。舉個(ge)(ge)例子，假設(she)市(shi)政工(gong)(gong)(gong)程在鬧市(shi)，一(yi)(yi)個(ge)(ge)道(dao)路(lu)維(wei)修(xiu)(xiu)工(gong)(gong)(gong)程，半(ban)(ban)幅(fu)開放交(jiao)通，半(ban)(ban)幅(fu)維(wei)修(xiu)(xiu)，這個(ge)(ge)時候就需要(yao)全(quan)(quan)(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)，保證(zheng)不(bu)會有(you)行人誤入而(er)引發危(wei)險。再假設(she)一(yi)(yi)條(tiao)新建(jian)道(dao)路(lu)位于(yu)(yu)(yu)郊(jiao)區，一(yi)(yi)端與老路(lu)相接，另一(yi)(yi)端為野(ye)地(di)，那么只需要(yao)在新老路(lu)交(jiao)接處(chu)設(she)立(li)(li)單面(mian)(mian)(mian)的圍墻(qiang)和一(yi)(yi)扇門(men)即可(ke)，其余三面(mian)(mian)(mian)可(ke)以(yi)不(bu)封(feng)(feng)閉(bi)(bi)(bi)。全(quan)(quan)(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)圍擋：將整個(ge)(ge)施工(gong)(gong)(gong)范圍用硬(ying)質(zhi)材(cai)料圍起來，組成全(quan)(quan)(quan)(quan)封(feng)(feng)閉(bi)(bi)(bi)圍墻(qiang)半(ban)(ban)封(feng)(feng)閉(bi)(bi)(bi)：有(you)一(yi)(yi)面(mian)(mian)(mian)或多(duo)(duo)個(ge)(ge)面(mian)(mian)(mian)不(bu)設(she)圍擋的，即為半(ban)(ban)封(feng)(feng)閉(bi)(bi)(bi)。

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