# EQUAL ANGLE SECTION PROPERTIES CALCULATOR

Equal angle section properties calculator for moment of inertia and area calculation.

 Unit System (Quick selection) MetricInch INPUT PARAMETERS Parameter Value Leg [b] mm cm m inch ft Thickness [t] Length [L] Density [p] g/cm^3 kg/m^3 lb/in^3
 RESULTS Parameter Value Cross section area [A] --- mm^2 cm^2 inch^2 ft^2 Mass [M] --- kg lb Second moment of area about x axis [Ix] --- mm^4 cm^4 inch^4 ft^4 Second moment of area about y axis [Iy] --- Radius of gyration [rx] --- mm cm m inch ft Radius of gyration [ry] --- Distance from the centroid to the back of the long leg [xc] --- mm cm m inch ft Distance from the centroid to the back of the short leg [yc] ---

Note: Use dot "." as decimal separator.

### Definitions:

Second Moment of Area: The capacity of a cross-section to resist bending.

Radius of Gyration (Area): The distance from an axis at which the area of a body may be assumed to be concentrated and the second moment area of this configuration equal to the second moment area of the actual body about the same axis.

### Angle Section Formula:

 ANGLE WITH EQUAL LEGS Parameter Symbol Equation Cross section area A A = t(2b - t) Area moment of inertia Ix Ix = 1/3*[b4 - (b-t) * (b-t)3] - A * (b - yc)2 Area moment of inertia Iy Iy = 1/3*[b4 - (b-t) * (b-t)3] - A * (b - xc)2 Distance from the centroid to the back of the long leg xc xc=(b2+bt-t2)/(2*(2b-t)) Distance from the centroid to the back of the short leg yc yc=(b2+bt-t2)/(2*(2b-t)) Mass M M = ALρ Radius of gyration rx rx = (Ix/A)^0.5 Radius of gyration ry ry = (Iy/A)^0.5