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熱軋普通 h b t w t r r 1 截面面積 每米重量 外表面積 I x Wx S x i. x I y Wy i. y 工字鋼規(guī)格 cm2 kg/m m2/m cm4 cm cm4 cm3 cm I10 100 68 4.5 7.6 6.5 3.3 14.33 11.25 0.43 245 49 28.2 4.14 32.8 9.6 1.51 I12.6 126 74 5 8.4 7 3.5 18.1 14.21 0.5 488 77.4 44.4 5.19 46.9 12.7 1.61 I14 140 80 5.5 9.1 7.5 3.8 21.5 16.88 0.55 712 101.7 58.4 5.75 64.3 16.1 1.73 I16 160 88 6 9.9 8 4 26.11 20.5 0.62 1127 140.9 80.8 6.57 93.1 21.1 1.8
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