SHS 88.9x88.9x4.78 CISC · Weight & Dimensions

CISC, cold-formed sections · Square Hollow Section

Square Hollow Sections (SHS) are tubular profiles with equal sides, ideal for columns and compression members due to their uniform buckling resistance in all directions.

Also known as: PTR 88.9x88.9 cal 6 (México) · Caño estructural 88.9x88.9 (Argentina)

The SHS 88.9x88.9x4.78 steel profile weighs 12.2 kg/m (8.17 lb/ft), has a depth of 88.9 mm (3.50 in), flange width 88.9 mm (3.50 in). Cross-sectional area: 1,549.535 mm². Moment of inertia Ix = 179.15 cm⁴, Iy = 179.15 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	88.9 mm	3.50 in
Width (b)	88.9 mm	3.50 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	12.2 kg/m	8.17 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,549.53 mm²	2.402 in²
Moment of inertia (Ix)	179.15 cm⁴	4.30 in⁴
Moment of inertia (Iy)	179.15 cm⁴	4.30 in⁴
Elastic section modulus (Sx)	40.3 cm³	2.459 in³
Elastic section modulus (Sy)	40.3 cm³	2.459 in³
Plastic section modulus (Zx)	48.23 cm³	2.943 in³
Plastic section modulus (Zy)	48.23 cm³	2.943 in³
Radius of gyration (rx)	3.4 cm	1.339 in
Radius of gyration (ry)	3.4 cm	1.339 in