[ㄷ형강] (KS D 3503, 3515/3502) 표준단면치수 Standard Sectional Dimension (㎜) 단위중량 Unit Weight (㎏/m) 표면적 Paint Area (㎡/ton) 단면적 Sectional Area (㎠) 단면계수 Modulus of Section (㎠) H X B t1 t2 W S A Zx Zy 75 x 40 5 7 6.92 43.353 8.818 20.2 4.54 100 x 50 5 7.5 9.36 41.667 11.92 37.8 7.82 125 x 65 6 8 13.4 37.164 17.11 68 14.4 150 x 75 *150 x 75 6.5 10 18.6 31.559 23.71 115 23.6 9 12.5 24 24.25 30.59 140 28.3 200 x 80 200 x 90 7.5 11 24.6 28.659 31.33 195 30.8 8 13.5 30.3 24.554 38.65 249 45.9 250 x 90 *250 x 90 9 13 34.6 24.85 44.07 335 46.5 11 14.5 40.2 20.846 51.17 375 51.7 300 x 90 *300 x 90 9 13 38.1 24.724 48.527 429 48 10 15.5 43.8 21.461 55.74 494 56 380 x 100 *380 x 100 *380 x 100 10.5 16 54.5 20.899 69.39 762 73.3 13 16.5 62 18.29 78.96 822 75.8 13 20 67.3 16.85 85.71 924 89.5