首先，在鋼結構樓層板中要達到耐火1.5小時，總的來說可以選擇開口板、縮口板、閉口板三大類。廣東熱鍍鋅鋼管規范上混凝土要高于開口板肋頂之上80mm，并且板底需配置板底受力筋。還有一種就是再開口板底部刷防火涂料，涂料厚度大于等于15,這樣的話，只要達到構造要求高于肋頂5公分就可以了。熱鍍鋅鋼管價格而縮口(kou)(kou)板和閉口(kou)(kou)板，只需(xu)要(yao)總(zong)的樓(lou)板厚度大于等于110即(ji)可，但是(shi)縮口(kou)(kou)板雖然在防火方面比(bi)開口(kou)(kou)板要(yao)好(hao)。但是(shi)底(di)部還(huan)是(shi)需(xu)要(yao)加板底(di)受力筋，而閉口(kou)(kou)板則不需(xu)要(yao)。

隨著(zhu)鋼(gang)結(jie)構(gou)在(zai)建筑(zhu)材料中的(de)(de)(de)(de)興起，越(yue)來越(yue)多的(de)(de)(de)(de)人選擇(ze)使用(yong)鋼(gang)結(jie)構(gou)樓承(cheng)(cheng)板(ban)(ban)了，鋼(gang)結(jie)構(gou)構(gou)件(jian)工(gong)(gong)廠產(chan)業化生產(chan)大大縮短了工(gong)(gong)程工(gong)(gong)期，而樓板(ban)(ban)的(de)(de)(de)(de)施(shi)工(gong)(gong)方法卻成為影響工(gong)(gong)期的(de)(de)(de)(de)重要(yao)因素。采用(yong)那一(yi)代樓承(cheng)(cheng)板(ban)(ban)對(dui)于樓板(ban)(ban)的(de)(de)(de)(de)耐火性能也(ye)有區別。樓承(cheng)(cheng)板(ban)(ban)的(de)(de)(de)(de)厚(hou)(hou)度(du)一(yi)般都是(shi)按保(bao)險起見(jian)設計的(de)(de)(de)(de)比較厚(hou)(hou)，正常(chang)情況下鋼(gang)梁(liang)之(zhi)間(jian)的(de)(de)(de)(de)跨度(du)在(zai)2m以內(nei)樓承(cheng)(cheng)板(ban)(ban)厚(hou)(hou)度(du)在(zai)0.75-0.8mm就(jiu)(jiu)(jiu)可以了，2-2.5m樓承(cheng)(cheng)板(ban)(ban)厚(hou)(hou)度(du)用(yong)0.8-1.0就(jiu)(jiu)(jiu)可以了，跨度(du)在(zai)3-4米樓承(cheng)(cheng)板(ban)(ban)厚(hou)(hou)度(du)用(yong)1.5mm，超過5m的(de)(de)(de)(de)跨度(du)是(shi)用(yong)臨時支撐(cheng)，因素就(jiu)(jiu)(jiu)是(shi)混泥土(tu)澆(jiao)筑(zhu)的(de)(de)(de)(de)高(gao)度(du)，混泥土(tu)澆(jiao)筑(zhu)的(de)(de)(de)(de)越(yue)高(gao)，樓承(cheng)(cheng)板(ban)(ban)所需要(yao)的(de)(de)(de)(de)厚(hou)(hou)度(du)也(ye)就(jiu)(jiu)(jiu)越(yue)厚(hou)(hou)，還有一(yi)個大家容易忽略的(de)(de)(de)(de)因素就(jiu)(jiu)(jiu)是(shi)螺(luo)釘的(de)(de)(de)(de)好(hao)(hao)壞也(ye)是(shi)決定樓承(cheng)(cheng)板(ban)(ban)厚(hou)(hou)度(du)的(de)(de)(de)(de)，螺(luo)釘越(yue)好(hao)(hao)樓承(cheng)(cheng)板(ban)(ban)的(de)(de)(de)(de)承(cheng)(cheng)載力就(jiu)(jiu)(jiu)越(yue)強。

用(yong)(yong)(yong)電(dian)鍍(du)(du)(du)(du)法(fa)制造這(zhe)種(zhong)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)具有良(liang)好(hao)的(de)(de)加工(gong)性(xing)。但(dan)鍍(du)(du)(du)(du)層(ceng)較薄，耐腐蝕性(xing)不如(ru)熱浸法(fa)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)；單(dan)(dan)面(mian)(mian)鍍(du)(du)(du)(du)和雙面(mian)(mian)差(cha)(cha)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)。單(dan)(dan)面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)，即只在一(yi)面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)的(de)(de)產(chan)品(pin)。在焊接、涂(tu)裝、防銹(xiu)(xiu)處理、加工(gong)等方面(mian)(mian)，具有比(bi)雙面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)好(hao)的(de)(de)適應性(xing)。為克服(fu)單(dan)(dan)面(mian)(mian)未涂(tu)鋅(xin)(xin)(xin)(xin)(xin)(xin)的(de)(de)缺點，又有一(yi)種(zhong)在另面(mian)(mian)涂(tu)以薄層(ceng)鋅(xin)(xin)(xin)(xin)(xin)(xin)的(de)(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)，即雙面(mian)(mian)差(cha)(cha)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)；合(he)金、復合(he)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)。它是用(yong)(yong)(yong)鋅(xin)(xin)(xin)(xin)(xin)(xin)和其他(ta)金屬如(ru)鉛、鋅(xin)(xin)(xin)(xin)(xin)(xin)制成(cheng)合(he)金乃至(zhi)復合(he)鍍(du)(du)(du)(du)成(cheng)的(de)(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)。這(zhe)種(zhong)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)既具有防銹(xiu)(xiu)性(xing)能，又有良(liang)好(hao)的(de)(de)涂(tu)裝性(xing)能。 除上(shang)述(shu)五種(zhong)外(wai)，還有彩色鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)、印花涂(tu)裝鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)、聚氯乙烯疊層(ceng)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)等。但(dan)目前常用(yong)(yong)(yong)的(de)(de)仍(reng)為熱浸鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)。 鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)按用(yong)(yong)(yong)途又可分(fen)為一(yi)般用(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)、建筑(zhu)外(wai)側板(ban)(ban)(ban)(ban)用(yong)(yong)(yong)、結(jie)構用(yong)(yong)(yong)、瓦壟板(ban)(ban)(ban)(ban)用(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)和深沖(chong)用(yong)(yong)(yong)等鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)。

鍍鋅(xin)(xin)鋼(gang)板(ban)(ban)按(an)用(yong)(yong)(yong)途(tu)又可分為一般用(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)、建筑(zhu)外側板(ban)(ban)用(yong)(yong)(yong)、結構用(yong)(yong)(yong)、瓦壟板(ban)(ban)用(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)和深沖(chong)用(yong)(yong)(yong)等鍍鋅(xin)(xin)鋼(gang)板(ban)(ban)。熱(re)鍍鋅(xin)(xin)板(ban)(ban)主(zhu)要應用(yong)(yong)(yong)于建筑(zhu)外用(yong)(yong)(yong)，建筑(zhu)內用(yong)(yong)(yong)，民用(yong)(yong)(yong)，門窗(chuang)，家具，機械，電(dian)子及家用(yong)(yong)(yong)電(dian)器(qi)等領(ling)域。也有機箱用(yong)(yong)(yong)這個，不過(guo)熱(re)鍍鋅(xin)(xin)板(ban)(ban)不放輻射的(de)(de)。空(kong)調，冰箱，微波(bo)爐(lu)及其(qi)類似家電(dian)背面(mian)的(de)(de)那(nei)個板(ban)(ban)就(jiu)是(shi)熱(re)鍍鋅(xin)(xin)板(ban)(ban)。鍍鋅(xin)(xin)層(ceng)(ceng)通(tong)過(guo)鈍化處(chu)(chu)(chu)理(li)(li)，可減少(shao)潮溫貯運(yun)條(tiao)件下(xia)產生折銹蝕(shi)(白(bai)銹) 。但(dan)這種(zhong)化學(xue)處(chu)(chu)(chu)理(li)(li)的(de)(de)防腐(fu)蝕(shi)性能是(shi)有限的(de)(de)，而且，妨(fang)礙大多數涂料的(de)(de)附(fu)著性。這種(zhong)處(chu)(chu)(chu)理(li)(li)一般不用(yong)(yong)(yong)在鋅(xin)(xin)鐵合金鍍層(ceng)(ceng)，除光整表面(mian)外，作為常規，生產廠對其(qi)他(ta)類型的(de)(de)鍍鋅(xin)(xin)層(ceng)(ceng)均進行鈍化處(chu)(chu)(chu)理(li)(li)。

樓(lou)(lou)承板(ban)(ban)(ban)組合板(ban)(ban)(ban)是一(yi)種十分合理的結構方式，它能(neng)夠按其(qi)各組成部件所處(chu)(chu)的方位和特(te)色，充分發(fa)揮鋼材抗(kang)拉和混(hun)凝土(tu)抗(kang)壓功能(neng)好的長(chang)(chang)處(chu)(chu)，并具有杰出的抗(kang)震功能(neng)、施工功能(neng)。這(zhe)(zhe)種結構現在被廣(guang)泛運(yun)用于國內外修建(jian)中(zhong)，但在國內大都(dou)將(jiang)樓(lou)(lou)承板(ban)(ban)(ban)當作模板(ban)(ban)(ban)運(yun)用，而(er)沒有充分發(fa)揮樓(lou)(lou)承板(ban)(ban)(ban)的效果。 與一(yi)般鋼筋混(hun)凝土(tu)樓(lou)(lou)板(ban)(ban)(ban)比較，樓(lou)(lou)承板(ban)(ban)(ban)組合樓(lou)(lou)板(ban)(ban)(ban)具備以下(xia)長(chang)(chang)處(chu)(chu)：樓(lou)(lou)承板(ban)(ban)(ban)能(neng)夠作為現澆混(hun)凝土(tu)的模板(ban)(ban)(ban)。這(zhe)(zhe)樣就省掉了施工中(zhong)裝(zhuang)置和撤除模板(ban)(ban)(ban)等(deng)工序，然后節約(yue)了時刻(ke)和勞動力;當樓(lou)(lou)承板(ban)(ban)(ban)裝(zhuang)置好今(jin)后將(jiang)能(neng)夠作為施工平臺運(yun)用。

鍍(du)鋅(xin)(xin)是(shi)一種經(jing)常(chang)采用(yong)(yong)的(de)(de)(de)經(jing)濟而有效的(de)(de)(de)防(fang)腐方法。鋅(xin)(xin)產量的(de)(de)(de)一半左(zuo)右均(jun)用(yong)(yong)于此種工藝。鍍(du)鋅(xin)(xin)卷(juan)是(shi)為防(fang)止(zhi)鋼板表面遭受腐蝕(shi)延長其使(shi)用(yong)(yong)壽命，在鋼板表面涂(tu)以一層金屬鋅(xin)(xin)，這種涂(tu)鋅(xin)(xin)的(de)(de)(de)鋼板稱為鍍(du)鋅(xin)(xin)卷(juan)。鍍(du)鋅(xin)(xin)卷(juan)主要用(yong)(yong)于建筑(zhu)、家電、汽車、容器(qi)、交通(tong)及(ji)家業等領域。特別是(shi)鋼結(jie)構建筑(zhu)、汽車制造(zao)、鋼板倉制造(zao)等行(xing)業。耐(nai)腐蝕(shi)強、表面質(zhi)量好、得利(li)于深(shen)加工、經(jing)濟實用(yong)(yong)等。有關(guan)產品標準(zhun)都列(lie)明鍍(du)鋅(xin)(xin)卷(juan)推薦的(de)(de)(de)標準(zhun)厚度(du)、長度(du)和寬(kuan)度(du)及(ji)其允許偏差。鍍(du)鋅(xin)(xin)卷(juan)厚度(du)偏差一般(ban)在0.05mm，長寬(kuan)偏差一般(ban)在5mm ，板材的(de)(de)(de)厚度(du)一般(ban)在0.2-3.2之間 。