2．合理堆碼、先放

(1)堆碼的(de)原則要求是在碼垛(duo)(duo)穩固、確保安(an)全(quan)的(de)條件下，做到按(an)品種、規格碼垛(duo)(duo)，不同品種的(de)材料要分別碼垛(duo)(duo)，

(2)禁止(zhi)在垛位附近存放對鋼管有腐蝕作(zuo)用(yong)的物(wu)品；

(3)垛底應墊高(gao)、堅固、平整，

(4)同種材料(liao)按(an)入庫先(xian)后分別堆碼(ma)，

(5)露天堆放的(de)型鋼，下(xia)面必須有木墊或(huo)條石(shi)，垛面略有傾(qing)斜，以利排水，并(bing)注(zhu)意材料安(an)放平直(zhi)，

(6)堆垛高度，人工作業(ye)的不(bu)超過1.2m，機械(xie)作業(ye)的不(bu)超過1.5m，

(7)垛(duo)與(yu)垛(duo)之間應留有(you)一定的通(tong)道(dao)，檢查道(dao)一般為(wei)O．5m，出入(ru)通(tong)道(dao)視(shi)材料大小和(he)運輸機械而定，

(8)垛底(di)墊(dian)(dian)高(gao)，若(ruo)倉庫為(wei)朝(chao)(chao)陽(yang)的水(shui)泥地(di)面(mian)，墊(dian)(dian)高(gao)O．1m即可；若(ruo)為(wei)泥地(di)，須墊(dian)(dian)高(gao)O．2～0.5m。若(ruo)為(wei)露天場地(di)，水(shui)泥地(di)面(mian)墊(dian)(dian)高(gao)O·3～O·5m，沙(sha)泥面(mian)墊(dian)(dian)高(gao)0.5～O．7m 9)露天堆放角鋼和槽鋼應俯放，即口朝(chao)(chao)下(xia)，工字鋼應立(li)放，鋼管的I槽面(mian)不能朝(chao)(chao)上，

鉚(liu)(liu)(liu)接在管(guan)壁厚(hou)度d≤1.5mm時(shi)，常采用翻邊鉚(liu)(liu)(liu)接，為(wei)(wei)避免管(guan)外側受力后產生(sheng)脫落，鉚(liu)(liu)(liu)接部位應(ying)在法蘭外側。鉚(liu)(liu)(liu)接直(zhi)徑(jing)應(ying)為(wei)(wei)板(ban)厚(hou)的2倍(bei)，但不得小于3mm，其(qi)凈長(chang)度L=2δ+1.5～2dmm。D為(wei)(wei)鉚(liu)(liu)(liu)釘(ding)(ding)(ding)直(zhi)徑(jing)，δ為(wei)(wei)連接鋼(gang)板(ban)的厚(hou)度，鉚(liu)(liu)(liu)釘(ding)(ding)(ding)與(yu)鉚(liu)(liu)(liu)釘(ding)(ding)(ding)之間的中心(xin)距(ju)(ju)一般為(wei)(wei)40～l00mm，鉚(liu)(liu)(liu)釘(ding)(ding)(ding)孔(kong)中心(xin)到板(ban)邊的距(ju)(ju)離(li)應(ying)保(bao)持(3～4) d。手(shou)工(gong)(gong)鉚(liu)(liu)(liu)接時(shi)，先把板(ban)材與(yu)角鋼(gang)劃好(hao)線，以確定鉚(liu)(liu)(liu)釘(ding)(ding)(ding)位置，再(zai)按鉚(liu)(liu)(liu)釘(ding)(ding)(ding)直(zhi)徑(jing)用手(shou)電(dian)鉆打(da)鉚(liu)(liu)(liu)釘(ding)(ding)(ding)孔(kong)，把鉚(liu)(liu)(liu)釘(ding)(ding)(ding)自內向外穿(chuan)過，墊(dian)好(hao)墊(dian)鐵(tie)，用鋼(gang)制(zhi)方錘打(da)堆釘(ding)(ding)(ding)尾，再(zai)用罩模罩上(shang)把釘(ding)(ding)(ding)尾打(da)成半圓形的釘(ding)(ding)(ding)帽。這種(zhong)方法工(gong)(gong)序(xu)較多，工(gong)(gong)效低，錘打(da)噪聲大，工(gong)(gong)人勞動(dong)強度大。

通風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)劃分(fen)不同(tong)區域的(de)(de)(de)工(gong)業通風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)對(dui)送(song)(song)風(feng)(feng)(feng)和(he)(he)(he)排(pai)(pai)風(feng)(feng)(feng)的(de)(de)(de)要(yao)求不同(tong)，區域較(jiao)大時(shi)(shi)，對(dui)應的(de)(de)(de)送(song)(song)風(feng)(feng)(feng)和(he)(he)(he)排(pai)(pai)風(feng)(feng)(feng)點(dian)也較(jiao)多，可將其分(fen)為多個送(song)(song)風(feng)(feng)(feng)和(he)(he)(he)排(pai)(pai)風(feng)(feng)(feng)的(de)(de)(de)子系(xi)(xi)(xi)統(tong)(tong)，通風(feng)(feng)(feng)管道圓三通制(zhi)作，由(you)1臺風(feng)(feng)(feng)機與其相連的(de)(de)(de)管道構成一個系(xi)(xi)(xi)統(tong)(tong)，方便管理。系(xi)(xi)(xi)統(tong)(tong)劃分(fen)的(de)(de)(de)依據主要(yao)為：生產工(gong)藝流(liu)程和(he)(he)(he)運行時(shi)(shi)間(jian)相同(tong)的(de)(de)(de)，建(jian)議(yi)劃分(fen)為一個系(xi)(xi)(xi)統(tong)(tong)；運行參數和(he)(he)(he)空氣處理要(yao)求相同(tong)的(de)(de)(de)，建(jian)議(yi)劃分(fen)為一個系(xi)(xi)(xi)統(tong)(tong)；位(wei)于風(feng)(feng)(feng)機附近的(de)(de)(de)排(pai)(pai)風(feng)(feng)(feng)量(liang)較(jiao)大的(de)(de)(de)排(pai)(pai)風(feng)(feng)(feng)點(dian)與遠處排(pai)(pai)風(feng)(feng)(feng)量(liang)較(jiao)小的(de)(de)(de)排(pai)(pai)風(feng)(feng)(feng)點(dian)不建(jian)議(yi)劃分(fen)為一個系(xi)(xi)(xi)統(tong)(tong)，這(zhe)將增(zeng)加排(pai)(pai)風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)阻力。另外(wai)，兩種或兩種以上有害物質(zhi)混合后能(neng)增(zeng)加毒性和(he)(he)(he)腐蝕(shi)性、容易引起火災和(he)(he)(he)的(de)(de)(de)，不能(neng)劃分(fen)為一個系(xi)(xi)(xi)統(tong)(tong)，建(jian)議(yi)單獨(du)設置排(pai)(pai)風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)(tong)。