彎頭(tou)風管面積計算方法是(shi)什么？
風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)作(zuo)安(an)裝(zhuang)以(yi)(yi)(yi)(yi)施(shi)工圖(tu)(tu)(tu)(tu)(tu)規(gui)格不(bu)(bu)同按(an)(an)(an)(an)展開面積(ji)(ji)(ji)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，不(bu)(bu)扣除檢查(cha)孔、測(ce)定(ding)(ding)孔、送(song)風(feng)(feng)(feng)(feng)(feng)口(kou)、吸(xi)風(feng)(feng)(feng)(feng)(feng)口(kou)等(deng)所(suo)(suo)占面積(ji)(ji)(ji)。圓(yuan)(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)F＝π×D×L式中(zhong)(zhong)(zhong)F-圓(yuan)(yuan)(yuan)形(xing)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)展開面積(ji)(ji)(ji)（以(yi)(yi)(yi)(yi)m2為(wei)(wei)(wei)(wei)(wei)單(dan)(dan)(dan)(dan)位(wei)(wei)）；D-圓(yuan)(yuan)(yuan)形(xing)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)直徑(jing)(jing)(jing)；L-管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)。矩形(xing)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)按(an)(an)(an)(an)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)周(zhou)長(chang)乘以(yi)(yi)(yi)(yi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)。2、通風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)彎(wan)頭的(de)(de)表面積(ji)(ji)(ji)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)規(gui)則(ze)是管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)延伸至相(xiang)交(jiao)的(de)(de)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)。3、三(san)(san)通：風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)長(chang)度(du)(du)(du)(du)一(yi)律以(yi)(yi)(yi)(yi)施(shi)工圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)準(zhun)(zhun)（主(zhu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)與(yu)支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)以(yi)(yi)(yi)(yi)其(qi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)交(jiao)點(dian)劃分(fen)），包(bao)(bao)(bao)(bao)括彎(wan)頭、三(san)(san)通、變徑(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、天圓(yuan)(yuan)(yuan)地(di)方(fang)(fang)(fang)(fang)等(deng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)的(de)(de)長(chang)度(du)(du)(du)(du)，但不(bu)(bu)得包(bao)(bao)(bao)(bao)括部件(jian)(jian)所(suo)(suo)占長(chang)度(du)(du)(du)(du)。直徑(jing)(jing)(jing)和(he)周(zhou)長(chang)按(an)(an)(an)(an)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)尺寸(cun)為(wei)(wei)(wei)(wei)(wei)準(zhun)(zhun)展開，咬(yao)口(kou)重(zhong)疊(die)部分(fen)已(yi)包(bao)(bao)(bao)(bao)括在(zai)定(ding)(ding)額(e)內，不(bu)(bu)得另行增加。   定(ding)(ding)額(e)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)規(gui)則(ze)中(zhong)(zhong)(zhong)規(gui)定(ding)(ding)：風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)長(chang)度(du)(du)(du)(du)一(yi)律以(yi)(yi)(yi)(yi)施(shi)工圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)準(zhun)(zhun)（主(zhu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)與(yu)支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)以(yi)(yi)(yi)(yi)其(qi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)交(jiao)點(dian)劃分(fen)），包(bao)(bao)(bao)(bao)括彎(wan)頭、三(san)(san)通、變徑(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、天圓(yuan)(yuan)(yuan)地(di)方(fang)(fang)(fang)(fang)等(deng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)的(de)(de)長(chang)度(du)(du)(du)(du)，但不(bu)(bu)得包(bao)(bao)(bao)(bao)括部件(jian)(jian)所(suo)(suo)占長(chang)度(du)(du)(du)(du)。直徑(jing)(jing)(jing)和(he)周(zhou)長(chang)以(yi)(yi)(yi)(yi)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)尺寸(cun)為(wei)(wei)(wei)(wei)(wei)準(zhun)(zhun)（變徑(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、天圓(yuan)(yuan)(yuan)地(di)方(fang)(fang)(fang)(fang)均按(an)(an)(an)(an)大頭口(kou)徑(jing)(jing)(jing)尺寸(cun)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)），咬(yao)口(kou)重(zhong)疊(die)部分(fen)已(yi)包(bao)(bao)(bao)(bao)括在(zai)定(ding)(ding)額(e)內，不(bu)(bu)得另行增加。僅(jin)供參(can)考。   工程(cheng)量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)規(gui)則(ze)一(yi)、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)按(an)(an)(an)(an)設計(ji)(ji)(ji)(ji)(ji)(ji)(ji)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)以(yi)(yi)(yi)(yi)展開面積(ji)(ji)(ji)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)平(ping)方(fang)(fang)(fang)(fang)米為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。檢查(cha)孔、測(ce)定(ding)(ding)孔、送(song)風(feng)(feng)(feng)(feng)(feng)口(kou)、吸(xi)風(feng)(feng)(feng)(feng)(feng)口(kou)所(suo)(suo)占面積(ji)(ji)(ji)不(bu)(bu)除。風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)展開面積(ji)(ji)(ji)不(bu)(bu)包(bao)(bao)(bao)(bao)括風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)口(kou)重(zhong)疊(die)部分(fen)面積(ji)(ji)(ji)。二、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)長(chang)度(du)(du)(du)(du)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)時一(yi)律以(yi)(yi)(yi)(yi)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)準(zhun)(zhun)(主(zhu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)與(yu)支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)以(yi)(yi)(yi)(yi)其(qi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)交(jiao)接點(dian)劃分(fen))，包(bao)(bao)(bao)(bao)括彎(wan)頭、三(san)(san)通、變管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、天圓(yuan)(yuan)(yuan)地(di)方(fang)(fang)(fang)(fang)等(deng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)的(de)(de)長(chang)度(du)(du)(du)(du)，但不(bu)(bu)得包(bao)(bao)(bao)(bao)括部件(jian)(jian)所(suo)(suo)占的(de)(de)長(chang)度(du)(du)(du)(du)。三(san)(san)、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)導流葉(xie)片(pian)制(zhi)作(zuo)安(an)裝(zhuang)按(an)(an)(an)(an)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)葉(xie)片(pian)的(de)(de)面積(ji)(ji)(ji)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)平(ping)方(fang)(fang)(fang)(fang)米為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。四、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)檢查(cha)孔制(zhi)作(zuo)安(an)裝(zhuang)按(an)(an)(an)(an)設計(ji)(ji)(ji)(ji)(ji)(ji)(ji)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)尺寸(cun)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)重(zhong)量(liang)(liang)(liang)(liang)，以(yi)(yi)(yi)(yi)千克(ke)為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。五、溫(wen)度(du)(du)(du)(du)、風(feng)(feng)(feng)(feng)(feng)量(liang)(liang)(liang)(liang)測(ce)定(ding)(ding)孔制(zhi)作(zuo)安(an)裝(zhuang)依(yi)據其(qi)型號，按(an)(an)(an)(an)設計(ji)(ji)(ji)(ji)(ji)(ji)(ji)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)數量(liang)(liang)(liang)(liang)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)個為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。六、柔性軟(ruan)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)安(an)裝(zhuang)按(an)(an)(an)(an)設計(ji)(ji)(ji)(ji)(ji)(ji)(ji)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)心線(xian)(xian)(xian)長(chang)度(du)(du)(du)(du)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)米為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)；柔性軟(ruan)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)閥門安(an)裝(zhuang)按(an)(an)(an)(an)設計(ji)(ji)(ji)(ji)(ji)(ji)(ji)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)數量(liang)(liang)(liang)(liang)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)個為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。七、軟(ruan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(帆(fan)布)接口(kou)制(zhi)作(zuo)安(an)裝(zhuang)按(an)(an)(an)(an)圖(tu)(tu)(tu)(tu)(tu)示(shi)(shi)(shi)(shi)尺寸(cun)，以(yi)(yi)(yi)(yi)平(ping)方(fang)(fang)(fang)(fang)米為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。八、風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)運輸(shu)按(an)(an)(an)(an)薄鋼(gang)板通風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)、靜壓箱、罩(zhao)類等(deng)按(an)(an)(an)(an)展開面積(ji)(ji)(ji)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)算(suan)(suan)(suan)，以(yi)(yi)(yi)(yi)平(ping)方(fang)(fang)(fang)(fang)米為(wei)(wei)(wei)(wei)(wei)計(ji)(ji)(ji)(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)單(dan)(dan)(dan)(dan)位(wei)(wei)。