《建筑設計防火規(guī)范》GB-解讀最終版

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總則.........................................................................................................................................................1術語、符號.................................................................................................................................................22.1術語..................................................................................................................................................22.2符號..................................................................................................................................................4廠房和倉庫.................................................................................................................................................53.1火災危險性分類...............................................................................................................................53.2廠房和倉庫的耐火等級...................................................................................................................73.3廠房或倉庫的層數、面積和平面布置...........................................................................................93.4廠房的防火間距.............................................................................................................................13快3.5鼓倉庫的防火間袖距防......掀......痛......犧......卸......辱......直......偏......放......自......曉......奧......癥......菌......祝......騙......帽......怒......魔......生......萍.....1緒7鳳3.6兩廠房和倉庫的樸防爆留......瘡......容......敗......載......沉......綠......予......液......躍......澤......東......被......穩(wěn)......朝......言......庫......杯......那......征......調.19嫂3.7姑廠房的安全疏屬散途......納......拘......保......通......氣......詠......澤......壇......潤......弦......傻......蛇......求......不......駱......智......串......催......援......涉.....2反1改3.8震倉庫的安全疏典散槳......枕......名......午......哄......貧......餅......藍......預......痰......敘......頌......宋......塵......塵......舉......悄......枝......寸......灣......皮.....2恰2棄甲、乙、丙類頃液體、氣體儲風罐（區(qū)）和可溪燃材料堆場元......脫......梅......崖......長......奔......銳......話......淹......摔......腦......蝴......品24鼓4.1傷一般規(guī)定御.....鄙......刻......克......墻......輛......搬......常......鋸......敢......殿......胖......財......銹......年......舞......鵝......資......灌......團......搞......棕......裳.....2急4返4.2街甲、乙、丙類匯液體儲罐（區(qū)驟）的防火間距靠......茅......擠......會......掛......吉......心......痛......穗......捐......岸......硬......伙......毅...24開4.3貴可燃、助燃氣切體儲罐（區(qū)）良的防火間距梅......摩......月......召......鳳......封......非......父......者......強......慢......鎖......灑......儀......于.27把4.4傷液化石油氣儲拆罐（區(qū)）的防節(jié)火間距街......賄......晉......耳......愿......添......音......私......笨......揀......棚......茶......降......循......獲......統(tǒng)...31再4.5倦可燃材料堆場王的防火間距目......襪......決......接......禿......電......蝕......管......片......慣......觀......昏......巾......與......周......病......逆......什......凳.33爪民用建筑法.....牌......咽......劍......貿......膀......葛......拼......午......闖......文......閥......旦......崗......睬......薄......般......團......挺......洗......管......瘋......鈴......美......末....35戀5.1痕建筑分類和耐土火等級低......為......古......共......戶......撞......映......旦......齡......友......寸......籃......等......唉......邁......吳......淺......疾......弊......拉...35際5.2知總平面布局全......朱......勿......誤......坐......燒......毫......豬......投......胖......閣......進......鍵......召......敞......斤......結......倘......萍......呆......槳......翁......魔.37刺5.3嫁防火分區(qū)和層誦數弦......返......收......彈......勵......黎......誠......訪......誓......塑......氧......葛......唐......沃......原......化......當......維......波......彼......柄.....3避9代5.4過平面布置布.....旋......憤......扛......挺......雹......兩......值......窩......燕......車......餓......次......仰......崖......嫩......希......咸......強......橋......池......盜......秩.....4擁1遞5.5易安全疏散和避廈難麥......招......辰......牙......媽......瞎......賣......規(guī)......噴......匙......淺......努......洪......垮......古......哄......靜......絨......見......眾......波.....4榜6鍵建筑構造葡.....共......布......活......擾......洽......垮......破......耕......躍......我......則......殿......冊......欠......鮮......重......心......容......路......骨......坊......砍......捧......忙....56借6.1琴防火墻潔.....葬......欠......欠......曠......余......碑......遠......轉......羞......流......瞞......緩......川......嚴......佳......朋......筑......艦......累......琴......醬......仍......洲...56酬6.2腥建筑構件和管棕道井疼......笨......聾......五......棒......跡......弟......陜......坑......館......向......俱......臥......峰......拴......構......賊......流......型......脾......轉.56瓶6.3蝦屋頂、悶頂和闖建筑縫隙五......環(huán)......軟......淺......劇......徐......敏......槽......燥......凍......他......三......帖......余......骨......渣......洗......蒙......戒.....5垃8嶼6.4樸疏散樓梯間和館疏散樓梯等賭......腎......搬......擱......摧......蝦......郊......苦......捐......瘦......統(tǒng)......磨......月......港......慘......鄰......濁......黎......窗.59迫6.5戶防火門、窗和犁防火卷簾邊......醋......洪......獎......抓......遲......損......習......耗......絮......排......酬......削......憂......綱......太......炒......末......栽.....6識2欄6.6滑天橋、棧橋和咬管溝腿......甘......他......著......蓋......鑄......輪......級......艘......諸......菊......哀......滲......所......陷......樹......恐......復......設......芽......朋.641松6.7撇建筑保溫和外坡墻裝飾公......務......張......軍......凡......甜......傲......渡......壯......驗......許......連......春......之......落......猶......慌......癥......是......構...6478910

鍬滅火救援設施劈.....危......首......摟......弦......秀......侵......懂......必......慌......脾......寧......乒......廊......飽......福......貼......辮......臭......降......找......臉......全......廣..66壓7.1尋消防車道果.....興......鉛......悔......主......棍......握......晚......崗......答......配......頑......祖......剝......艙......匠......姐......在......廚......乳......辱......嗓......叮.....6贊6撲7.2朵救援場地和入挺口蔽......卷......統(tǒng)......舟......防......薯......貓......蚊......鉗......音......慈......永......覺......帶......懷......隆......顫......貼......艷......骨......本.....6神7疾7.3膀消防電梯俘.....莊......帳......剩......尖......卵......夾......畝......雁......能......軌......捎......翠......雙......堅......別......廟......差......新......牧......徹......霧......脅.....6謀8欺7.4適直升機停機坪以......刻......雁......恨......釣......鄰......皇......根......兼......田......專......遙......賄......麻......修......武......脆......皺......猛......貍......忙......臂...69勇消防設施的設頌置訂.....釘......濫......世......河......布......頌......經......鈴......聞......堪......析......福......貓......松......刮......壞......皇......每......歷......兆......欺......掃....70任8.1寧一般規(guī)定婚.....梁......章......吹......淋......尚......據......姿......享......杜......步......汪......欄......藍......賊......塘......梯......鮮......殲......此......箱......筐......鞠.....7納0爬8.2通室內消火栓系多統(tǒng)渴......棗......鏡......驚......歌......璃......唐......默......牲......異......泊......鬧......亮......聰......眨......宮......您......睛......路......屆......浮.....7攔1堤8.3榆自動滅火系統(tǒng)選......奶......蹲......笨......究......筒......釀......夾......鹿......糕......條......飲......蔽......燃......塘......六......醫(yī)......損......努......簽......常......盞...72妄8.4鮮火災自動報警知系統(tǒng)盛......挨......貢......險......頃......這......僑......行......涌......也......阻......修......情......雖......適......懲......臣......千......曾......痛......乘.75酷8.5烤防煙和排煙設傭施吉......組......哈......送......遇......錄......價......腳......父......河......婆......梳......矛......竄......軋......余......掩......要......憲......煉......心.....7積6張供暖、通風和暗空氣調節(jié)脆......削......宣......慶......嚴......杠......扒......叉......櫻......宋......石......廟......燭......漠......呆......甘......弟......系......繪......烤......經....78柱9.1葛一般規(guī)定嘗.....鑒......海......遞......蛋......編......茶......公......嬌......蜓......晚......止......五......艦......錘......遇......適......慣......挖......遍......塞......喬......為.....7就8習9.2香供暖息.....參......叛......止......警......招......泳......畝......福......漠......繭......炕......似......過......坊......康......態(tài)......繪......憂......冰......假......縮......羽......吼...78貨9.3液通風和空氣調蓄節(jié)廢......月......矮......孤......耽......醒......著......殘......枝......眼......滅......墾......既......導......采......共......掏......并......各......浩......矛.....7朝9肆電氣娃.....態(tài)......逆......鐮......啦......觀......昌......到......利......豐......氣......墊......牛......繪......營......拴......獅......休......嚴......拖......攪......脖......孟......棍......吐......咸....82區(qū)10.1謙消防電源及其燃配電宣......澤......爆......天......猴......誤......隙......芬......惹......覽......囑......碼......覺......盒......跑......疊......兵......斧......薪......造.....8階2損10.2廚電力線路及電幻器裝置梯......殿......武......綿......廚......汗......樸......湯......倘......執(zhí)......蠟......旨......目......秀......網......謎......旨......昏......獅......塵.83攜10.3識消防應急照明嗓和疏散指示標四志股......額......航......度......滲......連......凳......趨......扮......紛......貞......非......敘......會......伐......國......樸...84封11愈木結構建筑曠......摸......辟......秤......比......猛......慣......霞......致......焦......傭......漂......國......摩......吃......軋......芽......濤......違......慌......桶......忠......蒼......寧....8612

炒城市交通隧道版.....短......秀......稀......愁......膨......倡......塵......兄......適......至......冤......是......喂......朽......元......偷......矩......燈......氧......跡......壟......列......鄰90前12.1覺一般規(guī)定翅.....田......蝕......噴......黃......勵......搶......碎......棒......恰......壘......錫......急......察......盲......短......皮......依......婦......助......佛......吸......析...90甲12.2格消防給水和滅級火設施辨......她......肚......諸......探......寄......魯......趴......卻......見......條......孕......嘴......其......廣......翁......丈......妥......杏......綠.91淋12.3資通風和排煙系混統(tǒng)徹......挺......縫......并......魄......搜......賠......隔......光......毒......第......悉......結......財......愈......耽......絲......刃......逐......飛......陣...92窩12.4鉛火災自動報警朋系統(tǒng)績......泉......虹......鄉(xiāng)......芽......夜......壇......顫......貝......穗......可......肉......亦......擁......駱......服......策......瑞......議......滴.....9憐3嘴12.5腐供電及其他盜......牌......期......蹦......何......京......仿......肌......撓......氣......覽......決......峰......瑞......征......蕩......傅......師......診......噴......卵......俗.....9禁3籮附錄匹A魚建筑高度和建汗筑層數的計算氧方法俱.....板......水......木......趁......邊......玩......燥......妥......取......不......繳......邪......余......曠......赤......怨...95底附錄認B亞防火間距的計勿算方法媽.....攝......挨......碌......殲......污......鹽......籮......棕......釋......刺......替......介......打......值......朽......釣......述......忍......莫.....9忙6攪附錄屋C撒隧道內承重結觀構體的耐火極甜限試驗升溫曲濫線倚.....喘......稿......袖......尤......索......縮......穿......晝......麥......偉......浪......殼......乖.97芽和相應的判定殿標準煤.....陰......置......蛙......走......愉......撇......篇......辟......嚷......翠......吹......茫......軌......悉......齊......策......擔......季......駐......越......尼......堅......趣97災本規(guī)范用詞說寇明蹲.....俯......蓬......唯......批......腹......槐......款......猛......杠......惰......斜......腰......奶......朽......茶......悶......恥......漢......灌......軌......繼......吩......封....98析引用標準名錄皮.....甘......擦......于......江......左......晴......督......怎......糊......照......少......領......仁......頁......甘......遮......壽......禁......址......幣......正......贈......杯......讓..992菊CONTEN小TS討1Gene捧ralpr她ovisio慘ns...刮......淹......枕......蒜......達......欲......致......仰......辟......亮......區(qū)......漠......叫......膚......納......助......籍......晚......股......教......膠......蓮......亭123

如Terms昏andsy啞mbols番......印......剝......爪......數......棉......穴......悟......狼......內......馬......海......帶......持......賢......萌......眾......進......啄......震......障......些......討..2糊2.1Te身rms...叫......躍......舒......糾......丙......嚇......鴿......險......痛......蓬......蘿......彼......駐......炎......觸......解......晃......累......咳......錯......撫......握......賢......帆....2冊2.2Sy客mbols謠......燈......紀......淺......陶......釘......粒......早......詢......撒......遵......結......尖......歌......堡......丑......膽......耕......織......潔......久......珍......高......妖..3桑Factor戚ybuil亞dings亦andst血orages泳......摧......幣......逢......鄙......督......顛......呢......錦......自......石......亦......聚......撤......職......料......其......號......拔......抬...5賠3.1Cl忘assifi爬cation伴offi利rehaz睬ards..雄......料......異......嚴......創(chuàng)......貓......孟......圍......匯......駐......鴉......殊......帶......饑......駱......破......湖......潛.....53.23.33.43.5

艦Firer零esista膊ncecl怪assof捏facto息rybui業(yè)ldings些ands國torage攤s....球......浩......貧......講......回......瘦......存......瘦......塵......損......測...7信Storie莖s,occ宵upied驅areaa首ndpla尤nearr雁angeme晝ntof配factor怕ybuil挺dings禿andst脅orages瘡.....址......排......鄙......慎......揮9維Fires怪eparat需iondi吧stance腸offac展toryb叫uildin齊gs...學......帶......編......掏......串......鏟......補......竄......版......秒......占......仁......憶......題..13婚Fires巾eparat絹iondi塊stance憑ofst納orages徑.....裝......油......振......暮......姓......甲......截......責......費......擁......栽......忍......仗......殲......熊......旗.17握3.6Ex辣plosio份nprev醒ention狂offa巧ctory炊buildi慨ngsan犯dstor寺ages.論......另......憐......瀉......午......蒜......慧......氧......匠......夾......泰....193.7

賣Safee祥vacuat侵ionof況facto夢rybui爬ldings靠......朵......醋......娘......關......魄......叼......講......祖......翠......騰......粥......繼......造......信......天.....2博1慕3.8Sa設feeva寫cuatio煎nofs雹torage皆s.....同......及......役......蠢......衰......對......遇......霜......龍......將......別......蘭......助......膨......繁......綱......某......船..224

如Class鼓A,B,趕Cliqu漏idand括gast聾anks蔽（藍tankf乖arm份）葡ands域tackya立rdfor狂combu浪stible背s....殊......奉......糧......繭......偽....24愧4.1Ge勤neral幫requir梅ement.甜......話......乏......悅......暫......輪......類......魯......府......亂......債......挖......跑......日......西......推......加......稿......濃......滋.....2置44.24.34.4

嫁Fires份eparat李iondi阿stance辰ofCl美assA,惠B,C咽liquid賢tanks昂（筍tankf汪arm笨）畫......津......蝶......陜......博......極......朱......滿.24矩Fires例eparat役iondi漠stance爛ofco貢mbusti執(zhí)blean描dcomb閘ustion并-suppo鈔rting奏gasta聞nks這（涂tankf肯arm肥）日....2醒7辟Fires尸eparat桑iondi摟stance視ofLP疏Gtank刑s算（敲tankf梳arm觀）忽.....趴......糧......住......劉......玻......鞭......嘉......恰......排......榴......且..31凡4.5Fi覺resep作aratio閃ndist折anceo咐fstac虹kyard便forco宋mbusti鞭bles.田......渠......敲......融......拿......利......佛......蘇......繼......貢......立.....3蒼35

徒Civil衰Buildi察ng...秧......柿......咸......律......含......口......慕......巡......奉......梅......毒......故......久......末......筒......晃......登......文......泥......完......論......藏......階.....3掌5兇5.1Cl椒assifi孔cation惰andf澡irere刃sistan疑cecla茂ss...擴......損......粥......贈......氣......械......飛......納......抓......購......謎......逝......架......巴......物...35梳5.2Ge價neral寨layout全.....候......絹......朽......麗......拳......綱......來......介......裂......掏......硬......浸......吼......供......蓋......范......盆......狂......財......興......凡....375.3

沙Firec柜ompart愈menta丑ndsto坦ries.硬......頂......療......衡......崇......乎......侵......腫......扁......么......核......泰......跌......黎......較......爛......過......所...39類5.4Pl除anear短rangem鼓ent...信......葬......鳥......殼......藍......究......董......運......歡......芒......恐......白......員......屬......妹......討......豪......晌......柜......唱......菌41扁5.6Sa古feeva揉cuatio橋nand度refuge泥.....死......輛......核......雖......戀......收......艦......毀......寒......謙......介......銹......半......倦......徑......君......廢......則..466

許Buildi俯ngcon辱struct宴ion...調......解......委......咐......電......揪......糠......脆......面......機......累......辜......滅......棍......濱......惰......逼......絨......暫......溉......威......段556.1

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脈為了預防建筑立火災，減少火壯災危害，保護蹈人身和財產安庭全，制定本規(guī)附范。攻本規(guī)范適用于視下列新建、擴里建和改建的建潑筑：廠房；倉庫；民用建筑；白甲、乙、丙類僚液體儲罐（區(qū)飾）；老可燃、助燃氣真體儲罐（區(qū)）軌；任可燃材料堆場沉；削城市交通隧道資。蜜人民防空工程間、石油和天然夜氣工程、石油貨化工工程和火離力發(fā)電廠與變懂電站等的建墳筑防火設計，口當有專門的國節(jié)家標準時，宜成從其規(guī)定。

殖本規(guī)范不適用草于火藥、炸藥符及其制品廠房率（倉庫）、花罷炮廠房（倉庫鍵）的建筑防火設計。

就同一建筑內設家置多種使用功叨能場所時，不姐同使用功能場隙所之間應進行耍防火分揉隔，該建筑及沒其各功能場所號的防火設計應愿根據本規(guī)范的竄相關規(guī)定確定歌。

隊建筑防火設計漠應遵循國家的喚有關方針政策梁，針對建筑及涂其火災特點，社從全局出破發(fā)，統(tǒng)籌兼顧尖，做到安全適袖用、技術先進呀、經濟合理。

林建筑高度大于階250m辰的建筑，除應刺符合本規(guī)范的佳要求外，尚應價結合實際情況痰采挺取更加嚴格的悄防火措施，其掌防火設計應提基交國家消防主依管部門組織專興題研究、論證雁。

洲建筑防火設計船除應符合本規(guī)師范的規(guī)定外，稅尚應符合國家姨現行有關標準痕的規(guī)定。1媽2趴術語、符號2.1術語

啞高層建筑旺high-期riseb敗uildin浩g題建筑高度大于暗27m料的住宅建筑和惠建筑高度大于豎24m理的非單層廠房啄、倉庫和其他療民用建筑。偷注：建筑高度翅的計算應符合擔本規(guī)范附錄符A返的規(guī)定。

裙房

podium壤在高層建筑主盾體投影范圍外另，與建筑主體境相連且建筑高韻度不大于西24m劍的附屬建筑。

重要公共建筑

頭import串antpu奔blicb齡uildin阻g口發(fā)生火災可能脈造成重大人員菊傷亡、財產損孕失和嚴重社會鉗影響的公共建騾筑。

商業(yè)服務網點

訂commer悉cialf愁acilit盞ies皆設置在住宅建拜筑的首層或首棍層及二層，每同個分隔單元建譽筑面積不大于嫁300m狹2叮的商寸店、郵政所、院儲蓄所、理發(fā)種店等小型營業(yè)慨性用房。

高架倉庫

勁highr奮ackst巨orage注貨架高度大于企7m昂且采用機械化免操作或自動化床控制的貨架倉斷庫。

半地下室

圖semi-b線asemen羅t啦房間地面低于寇室外設計地面患的平均高度大隆于該房間平均低凈高嬸1/3長，且不大于裙1/2者。

地下室

巷baseme瓣nt傲房間地面低于擾室外設計地面昌的平均高度大闖于該房間平均萬凈高貧1/2欠者。

明火地點

除openf敢lamel劍ocatio炊n猜室內外有外露堤火焰或赤熱表貧面的固定地點搜（民用建筑內熱的灶具、電磁寨爐等除外）。

散發(fā)火花地點

怒sparki類ngsit初e禮有飛火的煙囪允或進行室外砂室輪、電焊、氣旦焊、氣割等作偷業(yè)的固定地點兼。

耐火極限

權firer唯esista芬ncera扎ting蠅在標準耐火試補驗條件下，建晉筑構件、配件川或結構從受到絮火的作用時起獸，至失去承蟲載能力、完整榴性或隔熱性時印止所用時間，鹿用小時表示。

防火隔墻

通firep勤artiti小onwal具l燥建筑內防止火遣災蔓延至相鄰糟區(qū)域且耐火極砌限不低于規(guī)定譽要求的不燃性答墻體。2

次防火墻柄fire激wall員防止火災蔓延老至相鄰建筑或耍相鄰水平防火妖分區(qū)且耐火極蘋限不低于黑3.00h挎的不燃性墻體。

避難層（間）

義refuge的floor營（逗room忙）厘建筑內用于人畏員暫時躲避火爆災及其煙氣危敲害的樓層（房懸間）。

安全出口

餓safety瓦exit沫供人員安全疏想散用的樓梯間資和室外樓梯的媽出入口或直通所室內外安全區(qū)所域的出口。

封閉樓梯間

羞enclos休edsta臉ircase弟在樓梯間入口吸處設置門，以偏防止火災的煙肯和熱氣進入的水樓梯間。

防煙樓梯間

膝smoke-董proof振stairc誰ase趁在樓梯間入口墨處設置防煙的祥前室、開敞式嘴陽臺或凹廊（肚統(tǒng)稱前室）等倚設施，且通背向前室和樓梯醒間的門均為防記火門，以防止宴火災的煙和熱罵氣進入的樓梯玩間。

斬避難走道踩exit學passag急eway著采取防煙措施滾且兩側設置耐臨火極限不低于仿3.00h殲的防火隔墻，蛛用于人員安全卡通行圓至室外的走道熟。

閃點

辰flash剛point搶在規(guī)定的試驗帖條件下，可燃午性液體或固體獵表面產生的蒸芳氣與空氣形成醒的混合犁物，遇火源能家夠閃燃的液體琴或固體的最低疏溫度（采用閉狠杯法測定）。

爆炸下限

命lower坡explos奏ionli隸mit熔可燃的蒸氣、差氣體或粉塵與沖空氣組成的混汗合物，遇火源倚即能發(fā)生爆炸混的最低濃度。

沸溢性油品

違boil-o喝veroi款l透含水并在燃燒若時可產生熱波零作用的油品。

防火間距

千fires澆eparat第iondi段stance膏防止著火建筑帳在一定時間內刺引燃相鄰建筑炮，便于消防撲鋒救的間隔距離雙。設注：防火間距載的計算方法應虧符合本規(guī)范附聽錄造B厲的規(guī)定。

防火分區(qū)

質firec羅ompart著ment朝在建筑內部采考用防火墻、樓乒板及其他防火失分隔設施分隔憤而成，能在一鋪定時間內形防止火災向同改一建筑的其余脆部分蔓延的局始部空間。

防煙分區(qū)

眾smoke疤compar姓tment涉在建筑內部采材用擋煙設施分權隔而成，能在子一定時間內防罷止火災煙氣向互同一建筑3障的其余部分蔓笑延的局部空間涉。

充實水柱

策fullw機aters瞧pout絮從水槍噴嘴起遼至射流埋90%知的水柱水量穿聞過直徑鼻380mm挽圓孔處的一段襖射流長度。2.2符號敬A類——怎泄壓面積C——泄壓比泳D繞——泊儲罐的直徑百D蒼N交——戀管道的公稱直嚴徑恥Δ譽H澤——猴建筑高差箱L挎——霞隧道的封閉段粉長度N——人數n——座位數綢K崇——見爆炸特征指數纖V壺——奔建筑物、堆場靠的體積，儲罐魂、瓶組的容積源或容量陷W規(guī)——座可燃材料堆場旗或糧食筒倉、它席穴囤、土圓鬼倉的儲量4食3捧廠房和倉庫起3.1缺火災危險性分裝類

搏生產的火災危繼險性應根據生珍產中使用或產刃生的物質性質刷及其數量等因禽素劃分，籍可分為甲、乙競、丙、丁、戊鄭類，并應符合附表的規(guī)定。表

濃生產的火災危辛險性分類

翁同一座廠房或猜廠房的任一防奪火分區(qū)內有不軋同火災危險性乘生產時，廠房魄或防火分石區(qū)內的生產火壓災危險性類別藝應按火災危險濕性較大的部分壩確定；當生產甚過程中使用或貌產5生產的火災生產的火災危險性類別使用或產生下列物質生產的火災危險性特征甲1．閃點小于28℃的液體2．爆炸下限小于10%的氣體3．常溫下能自行分解或在空氣中氧化能導致迅速自燃或爆炸的物質4．常溫下受到水或空氣中水蒸氣的作用，能產生可燃氣體并引起燃燒或爆炸的物質5．遇酸、受熱、撞擊、摩擦、催化以及遇有機物或硫磺等易燃的無機物，極易引起燃燒或爆炸的強氧化劑6．受撞擊、摩擦或與氧化劑、有機物接觸時能引起燃燒或爆炸的物質7．在密閉設備內操作溫度不小于物質本身自燃點的生產乙1．閃點不小于28℃，但小于60℃的液體2．爆炸下限不小于10%的氣體3．不屬于甲類的氧化劑4．不屬于甲類的易燃固體5．助燃氣體6．能與空氣形成爆炸性混合物的浮游狀態(tài)的粉塵、纖維、閃點不小于60℃的液體霧滴丙1．閃點不小于60℃的液體2．可燃固體丁1．對不燃燒物質進行加工，并在高溫或熔化狀態(tài)下經常產生強輻射熱、火花或火焰的生產2．利用氣體、液體、固體作為燃料或將氣體、液體進行燃燒作其他用的各種生產3．常溫下使用或加工難燃燒物質的生產戊常溫下使用或加工不燃燒物質的生產御生易燃、可燃丙物的量較少，塊不足以構成爆著炸或火災危險胞時，可按實際修情況確定；當良符秘合下述條件之軌一時，可按火督災危險性較小的的部分確定：1

歉火災危險性較騾大的生產部分流占本層或本防魔火分區(qū)建筑面抗積的比例小于幸5%菠或飄丁、戊類廠房恒內的油漆工段盯小于木10%巾，且發(fā)生火災載事故時不足以墳蔓延至其他部壽位或果火災危險性較件大的生產部分源采取了有效的置防火措施；2

味丁、戊類廠房貧內的油漆工段幟，當采用封閉催噴漆工藝，封凈閉噴漆空間內臂保持負尺壓、油漆工段任設置可燃氣體歪探測報警系統(tǒng)管或自動抑爆系視統(tǒng)，且油漆工宰段占所在防火喊分單區(qū)建筑面積的拴比例不大于歪20%眨。

街儲存物品的火滿災危險性應根角據儲存物品的量性質和儲存物疑品中的可燃物油數量等希因素劃分，可眨分為甲、乙、沙丙、丁、戊類律，并應符合表誓的規(guī)定。表

刪儲存物品的火媽災危險性分類

貢同一座倉庫或嶼倉庫的任一防彎火分區(qū)內儲存攻不同火災危險蜻性物品時，倉訪庫或防6儲存物品的火儲存物品的火災危險性類別儲存物品的火災危險性特征甲1．閃點小于28℃的液體2．爆炸下限小于10%的氣體，受到水或空氣中水蒸氣的作用能產生爆炸下限小于10%氣體的固體物質3．常溫下能自行分解或在空氣中氧化能導致迅速自燃或爆炸的物質4．常溫下受到水或空氣中水蒸汽的作用，能產生可燃氣體并引起燃燒或爆炸的物質5．遇酸、受熱、撞擊、摩擦以及遇有機物或硫磺等易燃的無機物，極易引起燃燒或爆炸的強氧化劑6．受撞擊、摩擦或與氧化劑、有機物接觸時能引起燃燒或爆炸的物質乙1．閃點不小于28℃，但小于60℃的液體2．爆炸下限不小于10%的氣體3．不屬于甲類的氧化劑4．不屬于甲類的易燃固體5．助燃氣體6．常溫下與空氣接觸能緩慢氧化，積熱不散引起自燃的物品丙1．閃點不小于60℃的液體2．可燃固體丁難燃燒物品戊不燃燒物品旅火分區(qū)的火災溉危險性應按火僻災危險性最大鋤的物品確定。

橫丁、戊類儲存泡物品倉庫的火嬸災危險性，當這可燃包裝重量亮大于物品本身序重量藍1/4額或可燃包裝體是積大于物品本既身體積的叢1/2辜時，應按丙類姥確定。仔3.2號廠房和倉庫的釣耐火等級

剃廠房和倉庫的辭耐火等級可分處為一、二、三蓬、四級，相應鏡建筑構件的燃莫燒性能和覺耐火極限，除癢本規(guī)范另有規(guī)蟲定外，不應低威于表的規(guī)定。表

埋不同耐火等級項廠房和倉庫建疾筑構件的燃燒呀性能和耐火極抵限（竊h撕）7構件名稱構件名稱耐火等級構件名稱一級二級三級四級墻防火墻不燃性3.00不燃性3.00不燃性3.00不燃性3.00墻承重墻不燃性3.00不燃性2.50不燃性2.00難燃性0.50墻樓梯間和前室的墻電梯井的墻不燃性2.00不燃性2.00不燃性1.50難燃性0.50墻疏散走道兩側的隔墻不燃性1.00不燃性1.00不燃性0.50難燃性0.25墻非承重外墻房間隔墻不燃性0.75不燃性0.50難燃性0.50難燃性0.25柱不燃性3.00不燃性2.50不燃性2.00難燃性0.50梁不燃性2.00不燃性1.50不燃性1.00難燃性0.50樓板不燃性1.50不燃性1.00不燃性0.75難燃性0.50屋頂承重構件不燃性1.50不燃性1.00難燃性0.50可燃性疏散樓梯不燃性1.50不燃性1.00不燃性0.75可燃性吊頂（包括吊頂擱柵）不燃性0.25難燃性0.25難燃性0.15可燃性恰注：二級耐火舍等級建筑內采蹦用不燃材料的漆吊頂，其耐火汽極限不限。

鴿高層廠房，甲禮、乙類廠房的鐘耐火等級不應愿低于二級，建松筑面積不大于印300m年2駐的獨立甲、乙魂類單層廠房可瞞采用三級耐火銜等級的建筑。

旋單、多層丙類頭廠房和多層丁曾、戊類廠房的脊耐火等級不應尺低于三級。均使用或產生丙誦類液體的廠房供和有火花、赤御熱表面、明火擇的丁類廠房，續(xù)其耐火等堆級均不應低于溪二級；當為建永筑面積不大于棟500m洽2蘇的單層丙類廠淚房或建筑面積耐不大于斑1000m臘2片的單層丁類廠圈房時，可采用們三級耐火等級艱的建筑。

凡使用或儲存特錄殊貴重的機器旺、儀表、儀器僅等設備或物品艘的建筑，其耐綿火等級叢不應低于二級索。

灣鍋爐房的耐火杯等級不應低于鋒二級，當為燃氧煤鍋爐房且鍋徹爐的總蒸發(fā)量司不大于億4t/h雜時，可采用三鉛級耐火等級的迷建筑。

霉油浸變壓器室著、高壓配電裝疑置室的耐火等貍級不應低于二竭級，其他防火鞭設計應符柴合現行國家標妻準《火力發(fā)電雨廠和變電站設肅計防火規(guī)范》龜GB502禽29透等標準的規(guī)定酒。

殃高架倉庫、高弟層倉庫、甲類喊倉庫、多層乙鏡類倉庫和儲存臥可燃液體的多乞層丙類留倉庫，其耐火濃等級不應低于櫻二級。欺單層乙類倉庫煙，單、多層丙算類倉庫和多層摩丁、戊類倉庫診，其耐火等級佳不應低于三級。

欠糧食筒倉的耐常火等級不應低愿于二級；二級番耐火等級的糧傳食筒倉可采用打鋼板倉。匙糧食平房倉的仙耐火等級不應飲低于三級；二濕級耐火等級的在散裝糧食平房遙倉可采用無守防火保護的金銳屬承重構件。

顫甲、乙類廠房蛙和甲、乙、丙亡類倉庫內的防愿火墻，其耐火堤極限不應低于陶4.00h表。胡一、二級耐火巴等級單層廠房啦（倉庫）的柱拘，其耐火極限貓分別不應低于蓄2.50h皺和伯2.00h改。

發(fā)采用自動噴水隨滅火系統(tǒng)全保寒護的一級耐火士等級單、多層太廠房（倉庫）盒的屋頂刑承重構件，其祝耐火極限不應閱低于屆1.00h鴨。尖除一級耐火等斑級的建筑外，迅下列建筑構件帝可采用無防火塵保護的金屬結進構，其中能魂受到甲、乙、摘丙類液體或可今燃氣體火焰影炸響的部位應采戚取外包覆不燃規(guī)材料或其他防斬火保護措施：123

扯設置自動滅火保系統(tǒng)的單層丙妹類廠房的梁、巡柱和屋頂承重葵構件；鄙設置自動滅火逗系統(tǒng)的多層丙柴類廠房的屋頂畜承重構件；懂單、多層丁、輛戊類廠房（倉玉庫）的梁、柱除和屋頂承重構婦件。鴉除甲、乙類倉飯庫和高層倉庫態(tài)外，一、二級石耐火等級建筑戲的非承重外墻終，當采8霜用不燃性墻體它時，其耐火極榜限不應低于熊0.25h機；當采用難燃進性墻體時，不做應低于廈0.50h堵。閃4職層及陡4孔層以下的一、剛二級耐火等級孕丁、戊類地上驗廠房（倉庫）匯的非承重外墻統(tǒng)，劈當采用不燃性凳墻體時，其耐析火極限不限；澆當采用難燃性櫻輕質復合墻體于時，其表面材違料掙應為不燃材料煮、內填充材料羊的燃燒性能不般應低于孕B榜2多級。材料的燃幻燒性能分級應西符合夠現行國家標準免《建筑材料及稈制品燃燒性能均分級》拜GB862警4肌的規(guī)定。

鞋二級耐火等級照廠房（倉庫）樂內的房間隔墻納，當采用難燃喚性墻體時，其矩耐火極鍵限應提高璃0.25h屋。

因二級耐火等級亭多層廠房和多迎層倉庫內采用灰預應力鋼筋混薄凝土的樓板，蝕其耐火還極限不應低于期0.75h草。

演一、二級耐火齡等級廠房（倉安庫）的上人平獸屋頂，其屋面罩板的耐火極限嚷分別不勸應低于打1.50h燃誼和嫁1.00h顆。

膀一、二級耐火咸等級廠房（倉刪庫）的屋面板滴應采用不燃材癢料，但其屋面臨防水層乏和絕熱層可采浴用可燃材料；蚊當為少4役層及蝕4