防(fang)煙樓(lou)梯(ti)間(jian)及其前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)；消防(fang)電梯(ti)間(jian)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)或合用(yong)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)；避(bi)難(nan)走道(dao)的(de)(de)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)、避(bi)難(nan)間(jian)。建(jian)筑(zhu)高(gao)度不(bu)大于50m的(de)(de)公(gong)共建(jian)筑(zhu)、廠(chang)房、倉庫和建(jian)筑(zhu)高(gao)度不(bu)大于100m的(de)(de)住宅建(jian)筑(zhu)，當其防(fang)煙樓(lou)梯(ti)間(jian)的(de)(de)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)或合用(yong)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)符合條件之一時，樓(lou)梯(ti)間(jian)可不(bu)設置水泥(ni)煙道(dao)管：前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)或合用(yong)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)采用(yong)敞開的(de)(de)陽臺、凹廊；前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)或合用(yong)前(qian)(qian)(qian)(qian)室(shi)(shi)(shi)(shi)具(ju)有不(bu)同(tong)朝向的(de)(de)可開啟外(wai)窗，且可開啟外(wai)窗的(de)(de)面(mian)積滿足自然(ran)排煙口的(de)(de)面(mian)積要求。

廠(chang)房(fang)或(huo)倉庫的(de)(de)下列場(chang)所(suo)或(huo)部(bu)位應設(she)置排煙設(she)施：人員或(huo)可燃物較(jiao)(jiao)多的(de)(de)丙類(lei)生產(chan)場(chang)所(suo)，丙類(lei)廠(chang)房(fang)內建筑面積大于300m2，且經常(chang)有人停留或(huo)可燃物較(jiao)(jiao)多的(de)(de)地(di)上房(fang)間；建筑面積大于5000m2的(de)(de)丁類(lei)生產(chan)車(che)間；占地(di)面積大于1000m2的(de)(de)丙類(lei)倉庫；高度(du)大于32m的(de)(de)高層廠(chang)房(fang)內長度(du)大于20m的(de)(de)疏(shu)散走(zou)道，其他廠(chang)房(fang)內長度(du)大于40m的(de)(de)疏(shu)散走(zou)道。

民(min)用建筑(zhu)(zhu)的下(xia)列場(chang)所或部位應設置排煙(yan)設施(shi)：設置在(zai)一、二、三層(ceng)(ceng)且房(fang)(fang)間(jian)建筑(zhu)(zhu)面積大(da)于(yu)100m2的歌(ge)(ge)舞娛樂放映(ying)游藝場(chang)所，設置在(zai)四層(ceng)(ceng)及以(yi)上(shang)(shang)樓層(ceng)(ceng)、地(di)下(xia)或半地(di)下(xia)的歌(ge)(ge)舞娛樂放映(ying)游藝場(chang)所；公(gong)(gong)共(gong)建筑(zhu)(zhu)內(nei)(nei)建筑(zhu)(zhu)面積大(da)于(yu)100m2且經常有人停(ting)留的地(di)上(shang)(shang)房(fang)(fang)間(jian)；公(gong)(gong)共(gong)建筑(zhu)(zhu)內(nei)(nei)建筑(zhu)(zhu)面積大(da)于(yu)300m2且可燃物較多的地(di)上(shang)(shang)房(fang)(fang)間(jian)；建筑(zhu)(zhu)內(nei)(nei)長(chang)度(du)大(da)于(yu)20m的疏散走(zou)道(dao)。

地(di)下(xia)或(huo)半(ban)地(di)下(xia)建(jian)筑、地(di)上建(jian)筑內(nei)的(de)無窗房間，當總建(jian)筑面(mian)積大(da)于(yu)200m2或(huo)一個房間建(jian)筑面(mian)積大(da)于(yu)50m2，且經常有人停留或(huo)可燃物較多時，應(ying)(ying)設置(zhi)排(pai)煙(yan)設施。機械排(pai)煙(yan)系(xi)統(tong)(tong)(tong)與隧道的(de)通風系(xi)統(tong)(tong)(tong)宜分開設置(zhi)。合用時，合用的(de)通風系(xi)統(tong)(tong)(tong)應(ying)(ying)具備在火災時快速轉換的(de)功能，并應(ying)(ying)符合機械排(pai)煙(yan)系(xi)統(tong)(tong)(tong)的(de)要求。

隧道(dao)內設(she)置的(de)(de)(de)機械排(pai)(pai)煙(yan)(yan)(yan)系(xi)統應(ying)(ying)(ying)符合下列(lie)規定：采用全(quan)橫向和半橫向通(tong)風(feng)(feng)(feng)方式時，可通(tong)過排(pai)(pai)風(feng)(feng)(feng)管(guan)道(dao)排(pai)(pai)煙(yan)(yan)(yan)；采用縱向排(pai)(pai)煙(yan)(yan)(yan)方式時，應(ying)(ying)(ying)能(neng)(neng)迅速(su)組織氣(qi)(qi)流、有效(xiao)排(pai)(pai)煙(yan)(yan)(yan)，其(qi)排(pai)(pai)煙(yan)(yan)(yan)風(feng)(feng)(feng)速(su)應(ying)(ying)(ying)根據隧道(dao)內的(de)(de)(de)最不(bu)利火災規模確定，且縱向氣(qi)(qi)流的(de)(de)(de)速(su)度(du)不(bu)應(ying)(ying)(ying)小于(yu)2m/s，并應(ying)(ying)(ying)大于(yu)臨界(jie)風(feng)(feng)(feng)速(su)；排(pai)(pai)煙(yan)(yan)(yan)風(feng)(feng)(feng)機和煙(yan)(yan)(yan)氣(qi)(qi)流經(jing)的(de)(de)(de)風(feng)(feng)(feng)閥、消(xiao)聲器、軟接(jie)等輔助設(she)備，應(ying)(ying)(ying)能(neng)(neng)承受(shou)設(she)計(ji)的(de)(de)(de)隧道(dao)火災煙(yan)(yan)(yan)氣(qi)(qi)排(pai)(pai)放溫度(du)，并應(ying)(ying)(ying)能(neng)(neng)在250℃下連續正(zheng)常運行不(bu)小于(yu)1.0h。排(pai)(pai)煙(yan)(yan)(yan)管(guan)道(dao)的(de)(de)(de)耐火極限不(bu)應(ying)(ying)(ying)低于(yu)1.00h。