根(gen)(gen)據(ju)施工(gong)(gong)地點，條件不(bu)(bu)(bu)同(tong)(tong)而不(bu)(bu)(bu)同(tong)(tong)，建筑(zhu)工(gong)(gong)程(cheng)須全(quan)封(feng)閉(bi)(bi)，市區(qu)主要道(dao)路(lu)(lu)或(huo)(huo)人流大的不(bu)(bu)(bu)得低于2.5米(mi)(mi)，其余不(bu)(bu)(bu)得低于1.8米(mi)(mi)，一(yi)般(ban)半(ban)(ban)封(feng)閉(bi)(bi)多(duo)見于市政工(gong)(gong)程(cheng)，所謂的半(ban)(ban)封(feng)閉(bi)(bi)指兩面(mian)(mian)或(huo)(huo)三面(mian)(mian)設立圍(wei)(wei)(wei)擋(dang)，一(yi)面(mian)(mian)或(huo)(huo)兩面(mian)(mian)開放(fang)，便于施工(gong)(gong)機具材(cai)(cai)料(liao)的進出。具體(ti)要怎么(me)設置(zhi)根(gen)(gen)據(ju)招標文件、圖紙、現(xian)場環境，施工(gong)(gong)組織設計在保證安全(quan)的情(qing)況下來(lai)確定(ding)。舉個(ge)例子，假設市政工(gong)(gong)程(cheng)在鬧市，一(yi)個(ge)道(dao)路(lu)(lu)維(wei)修工(gong)(gong)程(cheng)，半(ban)(ban)幅開放(fang)交通，半(ban)(ban)幅維(wei)修，這個(ge)時候就需(xu)要全(quan)封(feng)閉(bi)(bi)，保證不(bu)(bu)(bu)會(hui)有(you)行(xing)人誤(wu)入而引發危險。再假設一(yi)條新(xin)建道(dao)路(lu)(lu)位于郊區(qu)，一(yi)端與老路(lu)(lu)相接(jie)，另一(yi)端為野地，那么(me)只(zhi)需(xu)要在新(xin)老路(lu)(lu)交接(jie)處設立單面(mian)(mian)的圍(wei)(wei)(wei)墻和(he)一(yi)扇(shan)門即(ji)可，其余三面(mian)(mian)可以不(bu)(bu)(bu)封(feng)閉(bi)(bi)。全(quan)封(feng)閉(bi)(bi)圍(wei)(wei)(wei)擋(dang)：將整個(ge)施工(gong)(gong)范(fan)圍(wei)(wei)(wei)用硬質材(cai)(cai)料(liao)圍(wei)(wei)(wei)起(qi)來(lai)，組成全(quan)封(feng)閉(bi)(bi)圍(wei)(wei)(wei)墻半(ban)(ban)封(feng)閉(bi)(bi)：有(you)一(yi)面(mian)(mian)或(huo)(huo)多(duo)個(ge)面(mian)(mian)不(bu)(bu)(bu)設圍(wei)(wei)(wei)擋(dang)的，即(ji)為半(ban)(ban)封(feng)閉(bi)(bi)。

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