根(gen)據施(shi)工(gong)(gong)(gong)(gong)地點，條件不同(tong)而不同(tong)，建筑工(gong)(gong)(gong)(gong)程須全封(feng)(feng)閉(bi)，市(shi)(shi)區主要(yao)道(dao)路或(huo)人(ren)流大(da)的(de)不得低于2.5米，其(qi)余(yu)不得低于1.8米，一(yi)(yi)般半(ban)(ban)(ban)封(feng)(feng)閉(bi)多見(jian)于市(shi)(shi)政工(gong)(gong)(gong)(gong)程，所謂的(de)半(ban)(ban)(ban)封(feng)(feng)閉(bi)指兩面(mian)或(huo)三面(mian)設(she)立(li)圍(wei)(wei)擋(dang)，一(yi)(yi)面(mian)或(huo)兩面(mian)開放，便于施(shi)工(gong)(gong)(gong)(gong)機(ji)具材料的(de)進出。具體(ti)要(yao)怎(zen)么(me)設(she)置根(gen)據招標文(wen)件、圖紙、現(xian)場環境，施(shi)工(gong)(gong)(gong)(gong)組織設(she)計在(zai)(zai)(zai)保證(zheng)安(an)全的(de)情況下來(lai)確定。舉個例(li)子(zi)，假設(she)市(shi)(shi)政工(gong)(gong)(gong)(gong)程在(zai)(zai)(zai)鬧市(shi)(shi)，一(yi)(yi)個道(dao)路維(wei)修工(gong)(gong)(gong)(gong)程，半(ban)(ban)(ban)幅(fu)開放交通(tong)，半(ban)(ban)(ban)幅(fu)維(wei)修，這個時候就(jiu)需要(yao)全封(feng)(feng)閉(bi)，保證(zheng)不會有行人(ren)誤入而引發危險。再假設(she)一(yi)(yi)條新(xin)(xin)建道(dao)路位于郊區，一(yi)(yi)端(duan)與老(lao)路相接(jie)，另一(yi)(yi)端(duan)為野地，那么(me)只(zhi)需要(yao)在(zai)(zai)(zai)新(xin)(xin)老(lao)路交接(jie)處設(she)立(li)單面(mian)的(de)圍(wei)(wei)墻和一(yi)(yi)扇門即可，其(qi)余(yu)三面(mian)可以不封(feng)(feng)閉(bi)。全封(feng)(feng)閉(bi)圍(wei)(wei)擋(dang)：將(jiang)整個施(shi)工(gong)(gong)(gong)(gong)范(fan)圍(wei)(wei)用硬(ying)質材料圍(wei)(wei)起(qi)來(lai)，組成全封(feng)(feng)閉(bi)圍(wei)(wei)墻半(ban)(ban)(ban)封(feng)(feng)閉(bi)：有一(yi)(yi)面(mian)或(huo)多個面(mian)不設(she)圍(wei)(wei)擋(dang)的(de)，即為半(ban)(ban)(ban)封(feng)(feng)閉(bi)。

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