StructureCalcs

75 x 50 x 5 UA

Unequal Angle · AS/NZS 3679.1 · Australia / New Zealand

75 x 50 x 5 UA is an unequal angle with 75 × 50 mm legs, 4.6 mm thick, weighing 4.4 kg/m. The dimensions below are the published AS/NZS 3679.1 values; the drawing is generated from them.

Unequal Angles put the longer leg where connection or stiffness demands it; like every angle they buckle about tilted principal axes, and the principal pair is published here.

75 x 50 x 5 UA drawn to scale. Save as SVG DXF

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Published dimensions

PropertyMetricImperial
Leg length, d75 mm2.95 in
Second leg, b50 mm1.97 in
Thickness, t4.6 mm0.181 in
Mass per metre4.4 kg/m3.0 lb/ft
Area, A560 mm²0.87 in²
Second moment, Ix321,200 mm⁴0.8 in⁴
Second moment, Iy115,400 mm⁴0.3 in⁴
Principal maximum, Imax370,000 mm⁴0.9 in⁴
Principal minimum, Imin66,600 mm⁴0.2 in⁴

Derived section properties

Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For 75 x 50 x 5 UA the computed area agrees with the published value to 0.09% and Ix to 0.07%. Where a value is also published, the published one above is the one to quote.

PropertyValue
Elastic modulus, Zx6,267 mm³
Elastic modulus, Zy2,995 mm³
Plastic modulus, Sx11,398 mm³
Plastic modulus, Sy5,409 mm³
Radius of gyration, rx23.9 mm
Radius of gyration, ry14.3 mm
Principal maximum, Imax (derived)369,630 mm⁴
Principal minimum, Imin (derived)66,596 mm⁴
Principal axis angle, θp23.6°

Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed.

Neighbouring sizes

Lighter65 x 50 x 5 UA4.0 kg/mHeavier65 x 50 x 6 UA5.2 kg/m

Where these numbers come from

Published AS/NZS 3679.1 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API