|Table of Contents |Section Contents|

PROPERTIES OF STRUCTURAL SHAPES - UNEQUAL ANGLES

wa = weight per foot of aluminum sections, lb
ws = weight per foot of steel sections, lb
A = area, in^2
I = moment of inertia, in^4
k = radius of gyration, in
x and y = respective centroidal distances, in
Z = section modulus, in^3

Size            wa   ws    A    I1-1  k1-1 Z1-1 y    
--------------- ---- ----- ---- ----- ---- ---- ---- 
2 x 1-1/2 x 1/8 0.51  1.44 0.42  0.17 0.63 0.12 0.60 
2 x 1-1/2 x 1/4 0.98  2.77 0.81  0.31 0.62 0.23 0.66
3 x 2 x 3/16    1.10  3.07 0.91  0.82 0.95 0.40 0.94 
3 x 2-1/2 x 1/4 1.58  4.5  1.31  1.12 0.92 0.53 0.89 
3 x 2-1/2 x 3/8 2.32  6.6  1.92  1.60 0.91 0.78 0.94 
3 x 2-1/2 x 1/2 3.02  9.4  2.49  2.03 0.90 1.01 0.99 
4 x 3 x 1/4     2.05  5.8  1.69  2.68 1.26 0.96 1.21 
4 x 3 x 1/2     3.95 11.1  3.25  4.96 1.24 1.85 1.31
6 x 4 x 3/8     4.36 12.3  3.60 13.02 1.90 3.17 1.90 
6 x 4 x 1/2     5.74 16.2  4.74 16.95 1.89 4.19 1.96 
--------------- ---- ----- ---- ----- ---- ---- ---- 

Size            I2-2 k2-2 Z2-2 x    I3-3 k3-3
--------------- ---- ---- ---- ---- ---- ----
2 x 1-1/2 x 1/8 0.08 0.44 0.07 0.36 0.04 0.32 
2 x 1-1/2 x 1/4 0.15 0.43 0.14 0.41 0.08 0.32
3 x 2 x 3/16    0.29 0.56 0.19 0.46 0.17 0.43
3 x 2-1/2 x 1/4 0.70 0.73 0.38 0.64 0.35 0.52
3 x 2-1/2 x 3/8 1.00 0.72 0.55 0.69 0.51 0.51
3 x 2-1/2 x 1/2 1.26 0.71 0.72 0.74 0.65 0.51
4 x 3 x 1/4     1.29 0.87 0.56 0.72 0.70 0.64
4 x 3 x 1/2     2.36 0.85 1.08 0.82 1.30 0.63
6 x 4 x 3/8     4.63 1.13 1.50 0.91 2.67 0.86
6 x 4 x 1/2     6.01 1.13 1.98 0.97 3.47 0.86
--------------- ---- ---- ---- ---- ---- ----