Unequal Angles

Rolled steel angle – unequal are called “angle” or “L-shape”. The are described by giving both leg lengths (longer first) and the wall thickness (all in mm), eg. 150 x 100 x 8 RSA. With the longer leg being in a vertical position, its loading capabilities are greater than equal angles, therefore they are often used as lintels. Unequal angles are also used as brackets for cleat connections. Similarly to equal angles, they are of the used for balconies, platforms, stairs, concrete supports, etc.

Section Designation
a x b x t mm
Section Dimensions
a mm
Section Dimensions
b mm
Section Dimensions
t mm
Mass per metre
M kg/m
Radius Root
r 1 mm
Radius Toe
r2mm
Distance of centre of gravity
Cxcm
Distance of centre of gravity
Cycm
Angle x-x Axis to
u-u Axis Tanα
Second Moment of Area
Axis Ix cm4
Second Moment of Area
Axis Iy cm4
Second Moment of Area
Axis Ixy cm4
Second Moment of Area
Axis Iu cm4
Second Moment of Area
Axis Iv cm4
Radius of Gyration Axis
rx cm
Radius of Gyration Axis
ry cm
Radius of Gyration Axis
ru cm
Radius of Gyration Axis
rv cm
Elastic Modulus Axis
Zx cm3
Elastic Modulus Axis
Zy cm3
Area of section
A cm2
Section Designation
a x b x t mm
Section Dimensions
a mm
Section Dimensions
b mm
Section Dimensions
t mm
Mass per metre
M kg/m
Radius Root
r 1 mm
Radius Toe
r2mm
Distance of centre of gravity
Cxcm
Distance of centre of gravity
Cycm
Angle x-x Axis to
u-u Axis Tanα
Second Moment of Area
Axis Ix cm4
Second Moment of Area
Axis Iy cm4
Second Moment of Area
Axis Ixy cm4
Second Moment of Area
Axis Iu cm4
Second Moment of Area
Axis Iv cm4
Radius of Gyration Axis
rx cm
Radius of Gyration Axis
ry cm
Radius of Gyration Axis
ru cm
Radius of Gyration Axis
rv cm
Elastic Modulus Axis
Zx cm3
Elastic Modulus Axis
Zy cm3
Area of section
A cm2
200x150x18 200 150 18 47.1 15 7.5 6.33 3.85 0.548 2376 1146 -963 2904 618 6.29 4.37 6.96 3.21 174 103 60
200x150x15 200 150 15 39.6 15 7.5 6.21 3.73 0.551 2022 979 -824 2476 526 6.33 4.4 7 3.23 147 86.9 50.5
200x150x12 200 150 12 32 15 7.5 6.08 3.61 0.552 1652 803 -675 2025 430 6.36 4.44 7.04 3.25 119 70.5 40.8
200x100x15 200 100 15 33.7 15 7.5 7.16 2.22 0.259 1758 299 -406 1864 194 6.4 2.64 6.58 2.12 137 38.4 43
200x100x12 200 100 12 27.3 15 7.5 7.03 2.1 0.262 1440 247 -336 1528 159 6.43 2.67 6.63 2.14 111 31.3 34.8
200x100x10 200 100 10 23 15 7.5 6.93 2.01 0.263 1219 210 -285 1294 135 6.46 2.68 6.65 2.15 93.2 26.3 29.2
150x90x15 150 90 15 26.6 12 6 5.21 2.23 0.354 761 205 -225 841 126 4.74 2.46 4.98 1.93 77.7 30.4 33.9
150x90x12 150 90 12 21.6 12 6 5.08 2.12 0.358 627 171 -188 694 104 4.77 2.49 5.02 1.94 63.3 24.8 27.5
150x90x10 150 90 10 18.2 12 6 5 2.04 0.36 533 146 -160 591 88.3 4.8 2.51 5.05 1.95 53.3 21 23.2
150x75x15 150 75 15 24.8 11 5.5 5.53 1.81 0.254 713 120 -161 754 78.8 4.75 1.94 4.88 1.58 75.3 21 31.6
150x75x12 150 75 12 20.2 11 5.5 5.41 1.69 0.259 589 99.9 -136 624 64.9 4.79 1.97 4.93 1.59 61.4 17.2 25.7
150x75x10 150 75 10 17 11 5.5 5.32 1.61 0.261 501 85.8 -117 532 55.3 4.81 1.99 4.96 1.6 51.8 14.6 21.6
125x75x12 125 75 12 17.8 11 5.5 4.31 1.84 0.354 354 95.5 -105 391 58.5 3.95 2.05 4.15 1.61 43.2 16.9 22.7
125x75x10 125 75 10 15 11 5.5 4.23 1.76 0.357 302 82.1 -90.1 334 49.9 3.97 2.07 4.18 1.61 36.5 14.3 19.1
125x75x8 125 75 8 12.2 11 5.5 4.14 1.68 0.36 247 67.6 -74.2 274 40.9 4 2.09 4.21 1.63 29.6 11.6 15.5
100x75x12 100 75 12 15.4 10 5 3.27 2.03 0.54 189 90.2 -75.3 230 49.5 3.1 2.14 3.42 1.59 28 16.5 19.7
100x75x10 100 75 10 13 10 5 3.19 1.95 0.544 162 77.6 -65.1 197 42.2 3.12 2.16 3.45 1.59 23.8 14 16.6
100x75x8 100 75 8 10.6 10 5 3.1 1.87 0.547 133 64.1 -53.8 162 34.6 3.14 2.18 3.47 1.6 19.3 11.4 13.5
100x65x10 100 65 10 12.3 10 5 3.36 1.63 0.41 154 51 -50.8 175 30.2 3.14 1.81 3.35 1.39 23.2 10.5 15.6
100x65x8 100 65 8 9.94 10 5 3.27 1.55 0.413 127 42.2 -42.2 144 24.8 3.16 1.83 3.37 1.4 18.9 8.54 12.7
100x65x7 100 65 7 8.77 10 5 3.23 1.51 0.415 113 37.6 -37.5 128 22 3.17 1.83 3.39 1.4 16.6 7.53 11.2
80x60x8 80 60 8 8.34 8 4 2.55 1.56 0.544 66.3 31.8 -26.7 80.8 17.3 2.5 1.73 2.76 1.27 12.2 7.16 10.6
80x60x7 80 60 7 7.36 8 4 2.51 1.52 0.546 59 28.4 -23.8 72 15.4 2.51 1.74 2.77 1.28 10.7 6.34 9.38
80x60x6 80 60 6 6.37 8 4 2.47 1.48 0.547 51.4 24.8 -20.8 62.8 13.4 2.52 1.75 2.78 1.29 9.29 5.49 8.11
75x50x8 75 50 8 7.39 7 3.5 2.52 1.29 0.43 52 18.4 -17.7 59.6 10.8 2.35 1.4 2.52 1.07 10.4 4.95 9.41
75x50x6 75 50 6 5.65 7 3.5 2.44 1.21 0.435 40.5 14.4 -14 46.6 8.36 2.37 1.42 2.55 1.08 8.01 3.81 7.19
65x50x8 65 50 8 6.75 6 3 2.11 1.37 0.569 34.8 17.7 -14.4 43 9.57 2.01 1.44 2.23 1.05 7.93 4.89 8.6
65x50x6 65 50 6 5.16 6 3 2.04 1.29 0.575 27.2 14 -11.4 33.8 7.43 2.03 1.46 2.27 1.06 6.1 3.77 6.58
65x50x5 65 50 5 4.35 6 3 1.99 1.25 0.577 23.2 11.9 -9.72 28.8 6.32 2.05 1.47 2.28 1.07 5.14 3.19 5.54
60x30x6 60 30 6 3.99 6 3 2.2 0.721 0.252 18.2 3.02 -4.08 19.2 1.99 1.89 0.771 1.95 0.626 4.78 1.32 5.08
60x30x5 60 30 5 3.37 6 3 2.15 0.681 0.255 15.6 2.6 -3.54 16.5 1.7 1.9 0.779 1.96 0.629 4.04 1.12 4.29
40x25x4 40 25 4 1.93 4 2 1.36 0.623 0.38 3.89 1.16 -1.21 4.35 0.701 1.26 0.688 1.33 0.534 1.47 0.619 2.46
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