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STEEL EQUAL ANGLE SECTION PROPERTIES

Steel equal angle (equal-leg L-shape) section properties for structural engineering design. Use this tool to obtain geometric properties, section moduli, radii of gyration, torsional properties, and workable gage data for standard equal-leg angle profiles.

Section properties are given with respect to the X, Y, and Z principal axes. The Z axis is defined as the axis with the smallest radius of gyration and is typically the critical axis for column buckling.

Input parameters for steel equal angle section
INPUT PARAMETERS
Actual Depth Thickness

 

Steel equal angle section properties – calculated results
Steel equal-leg angle (L-shape) standard structural steel section
RESULTS 
Parameter Value
Designation --- --- ---
Distance from outer face of flange to web toe of fillet k --- in
Weight per unit length W --- lb/ft
Cross section area A --- in2
Leg dimensions Long Leg d --- in
Short Leg b ---
Thickness t ---
Axis X-X Area moment of inertia about X axis Ix --- in4
Elastic section modulus about X axis Sx --- in3
Radius of gyration about X axis rx --- in
Vertical distance from the outer edge of the angle leg to its centroid y --- in
Plastic section modulus about X axis Zx --- in3
Vertical distance from the designated edge of member to its plastic neutral axis yp --- in
Axis Y-Y Area moment of inertia about Y axis Iy --- in4
Elastic section modulus about Y axis Sy --- in3
Radius of gyration about Y axis ry --- in
Horizontal distance from the outer edge of the angle leg to its centroid x --- in
Plastic section modulus about Y axis Zy --- in3
Horizontal distance from the designated edge of member to its plastic neutral axis xp --- in
Axis Z-Z Area moment of inertia about Z axis Iz --- in4
Elastic section modulus about Z axis Sz --- in3
Radius of gyration about Z axis rz --- in
Tangent of the angle of inclination wrt. Y axis Tan α --- ---
Flexural- Torsional Properties Polar moment of area J --- in4
Warping constant Cw --- in6
Polar radius of gyration about the shear center ro --- in
Reduction Factor for Unstiffened Slender Elements Qs (Fy = 36 ksi) --- ---
Workable gage ** g --- in
g1 ---
g2 ---

Note: Use dot “.” as the decimal separator when entering numerical values.

Note: Other gages are permitted to suit specific requirements, subject to clearance and minimum edge-distance limitations.

Supplements

Reference

  • American Institute of Steel Construction, Manual of Steel Construction, 13th Edition. Chicago: AISC, 2005.
  • Oberg, E., Jones, F. D., Horton, H. L., & Ryffel, H. H. (2012). Machinery's Handbook, 29th edition. Industrial Press Inc., pp 2594–2597.
  • A 6/A 6M - 05a, Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling.