100 x 75 x 10 UA

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

100 x 75 x 10 UA is an unequal angle with 100 × 75 mm legs, 9.5 mm thick, weighing 12.4 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.

100 x 75 x 10 UA drawn to scale. Save as SVG DXF

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Published dimensions

Property	Metric	Imperial
Leg length, d	100 mm	3.94 in
Second leg, b	75 mm	2.95 in
Thickness, t	9.5 mm	0.374 in
Mass per metre	12.4 kg/m	8.3 lb/ft
Area, A	1,580 mm²	2.45 in²
Second moment, Ix	1,547,000 mm⁴	3.7 in⁴
Second moment, Iy	744,000 mm⁴	1.8 in⁴
Principal maximum, I_max	1,890,000 mm⁴	4.5 in⁴
Principal minimum, I_min	401,000 mm⁴	1.0 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 100 x 75 x 10 UA the computed area agrees with the published value to 0.30% and I_x to 0.13%. Where a value is also published, the published one above is the one to quote.

Property	Value
Elastic modulus, Z_x	22,642 mm³
Elastic modulus, Z_y	13,352 mm³
Plastic modulus, S_x	41,309 mm³
Plastic modulus, S_y	24,310 mm³
Radius of gyration, rx	31.3 mm
Radius of gyration, ry	21.7 mm
Principal maximum, I_max (derived)	1,886,405 mm⁴
Principal minimum, I_min (derived)	401,377 mm⁴
Principal axis angle, θ_p	28.6°

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

Neighbouring sizes

Lighter125 x 75 x 8 UA11.8 kg/m Heavier125 x 75 x 10 UA14.2 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