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無(wú)畏，堅(jiān)守，突破170ADO54050離散量模塊有福之州-福建福州
則每m重量=.785×[4×（32+2-4）+.215×（3.5×3.5-2×1.2×1.2）]=1.48kg槽鋼(kg/m)W=.785×[hd+2t(b-d)+.349(R*R-r*r)]h=高d=腰厚b=腿長(zhǎng)R=內(nèi)弧半徑t=平均腿厚求8mm×43mm×5mm的槽鋼的每m重量。從冶金產(chǎn)品目錄中查出槽鋼t為R為r為4。則每m重量=.785×[8×5+2×8×（43-5）+.349×（8×8-4×4）]=8.4kg工字鋼(kg/m)W=.785×[hd+2t(b-d)+.615(R*R-r*r)]h=高d=腰厚b=腿長(zhǎng)R=內(nèi)弧半徑t=平均腿厚求25mm×118mm×1mm的工字鋼每m重量。

               
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向上引管，應(yīng)堵好管口，并用臨時(shí)支桿（如鋼筋等）將管沿敷設(shè)方向挑起。為使盒、箱平正，標(biāo)高準(zhǔn)確，可將管子敷設(shè)至盒、箱邊1mm處，待墻體砌筑到位，再穩(wěn)盒、箱，與管連接。穩(wěn)住盒、箱。用線墜或水平尺找正，同墻的盒、箱應(yīng)掛線找平；并考慮抹灰厚度，使盒，箱口與抹灰后的墻面平齊。b剔槽敷設(shè)的管段，只允許豎向剔槽，嚴(yán)禁別橫槽及預(yù)留過(guò)大，影響墻體強(qiáng)度。剔槽前，應(yīng)在槽兩邊彈線，用快鏨子剔。加氣混凝土墻，應(yīng)用刀鋸鋸兩邊，再剔。
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