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표준단면치수 Standard Sectional Dimension (mm) 단면적 Sectional Area 단위중량 Unit Weight 단면2차모멘트 Moment of Inertia (㎝²) 단면2차반지름 Radius of Gyration (㎝) 단면계수 Modulus of Section (㎝³) HxB t r¹ r² (㎝²) (㎏/m) max.lu min.lv lx.ly max.lu min.lv Zx,Zy 25x25 3 4 2 1.427 1.12 1.26 0.332 0.747 0.94 0.483 0.448 30x30 3 4 2 1.727 1.36 2.26 0.59 0.908 1.14 0.585 0.661 40x40 3 4.5 2 2.336 1.83 5.60 1.46 1.23 1.55 0.790 1.21 4 4.5 3 2.937 2.42 7.09 1.84 1.21 1.53 0.78 1.55 5 4.5 3 3.755 2.95 8.59 2.25 1.20 1.51 0.774 1.91 45x45 4 6.5 3 3.492 2.74 10.30 2.70 1.36 1.72 0.880 2 50x50 4 6.5 3 3.892 3.06 14.4 3.76 1.53 1.92 0.983 2.49 6 6.5 4.5 5.644 4.43 20 5.23 1.5 1.88 0.963 3.55 60x60 4 6.5 3 4.692 3.68 25.4 6.62 1.85 2.33 1.19 3.66 5 6.5 3 5.802 4.55 31.2 8.09 1.84 2.32 1.18 4.52 6 6.5 4.5 6.844 5.37 35.9 9.3 1.82 2.29 1.17 5.24 65x65 6 8.5 4 7.527 5.91 46.6 12.2 1.98 2.49 1.27 6.27 8 8.5 6 9.761 7.66 58.3 15.3 1.94 2.44 1.25 7.97 70x70 6 8.5 4 8.127 6.38 58.9 15.3 2.14 2.69 1.37 7.33 75x75 6 8.5 4 8.727 6.85 73.2 19 2.3 2.9 1.48 8.47 9 8.5 6 12.69 9.96 102 26.7 2.25 2.84 1.45 12.1 12 8.5 6 16.56 13 129 24.5 2.222 2.79 1.44 15.7 80x80 6 8.5 4 9.327 7.32 89.6 23.2 2.46 3.1 1.58 9.7 7 8.5 4 10.797 8.48 102.4 26.8 2.44 3.08 1.58 11.12 90x90 6 10 5 12.22 8.28 128 33.4 2.77 3.48 1.78 14.2 7 10 5 15.39 9.59 148 38.3 2.76 3.48 1.77 17.65 9 10 7 15.39 12.1 182 47.3 2.72 3.44 1.75 17.65 10 10 7 17.0 13.3 199 51.7 2.71 3.42 1.74 19.5 13 10 7 21.71 17.0 248 65.3 2.68 3.38 1.73 24.8 100x100 7 10 5 13.62 10.7 205 53.2 3.08 3.88 1.98 17.7 10 10 7 19.00 14.9 278 72.0 3.04 3.83 1.95 24.4 13 10 7 24.31 19.1 348 91.1 3 3.78 1.94 31.1 120x120 8 12 5 18.76 14.7 410 106 3.71 4.67 2.38 29.5 130x130 9 12 6 22.74 17.9 583 150 4.01 5.06 2.57 38.7 12 12 8.5 29.76 23.4 743 192 3.96 5 2.54 49.9 15 12 8.5 36.75 28.8 902 234 3.93 4.95 2.53 61.5 150x150 10 14 7 29.21 22.9 997 258 4.63 5.84 2.97 57.3 12 14 7 34.77 27.3 1.18 304 4.61 5.82 2.96 68.1 15 14 7 42.74 33.6 1.41 365 4.56 5.75 2.92 82.6 19 14 10 53.38 41.9 1.73 451 4.52 5.69 2.91 103.0 175x175 12 15 11 40.52 31.8 1.86 480 5.38 6.78 3.44 91.8 15 15 11 50.21 39.4 2.29 589 5.35 6.75 3.42 114.0 200x200 15 17 12 57.75 45.3 3.47 891 6.14 7.75 3.93 150.0 20 17 12 76.00 59.7 4.49 1.16 6.09 7.68 3.9 197.0 25 17 12 93.75 73.6 5.42 1.41 6.04 7.61 3.88 242.0 250x250 25 24 12 119.40 93.7 11 2.86 7.63 9.64 4.9 388.0 35 24 18 162.60 128 14.4 3.79 7.49 9.42 4.83 519.0