Universal Beams - 406x178x85

United Kingdom Universal Beams (UB), often called I-beams, are structural steel elements with an 'I' or 'H' shaped cross-section designed to carry high bending loads. They are primarily employed in structural engineering and construction scenarios where long spans and significant load-bearing capacity are required without excessive weight. You will commonly find them used as primary horizontal supports in multi-storey buildings, commercial warehouses, and industrial frameworks to transfer floor and roof loads to columns. They are also heavily utilized in residential renovations, such as creating open-plan living spaces by supporting upper floors when load-bearing walls are removed. Additionally, UBs serve as critical components in civil engineering projects, including bridge decks, gantries, and temporary shoring systems for deep excavations, because their design maximizes efficiency by placing the steel exactly where the bending stresses are highest.

Dimensions

PropertyValue
kg/m85.3
D mm417.2
B mm181.9
t mm10.9
T mm18.2
r mm10.2
d mm360.4
b/T5
d/t33.1
C mm7
N mm96
n mm30
m21.52
m217.8

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Second Moment of Area (x-x) - cm431700
Second Moment of Area (y-y) - cm41830
Radius of Gyration (x-x) - cm17.1
Radius of Gyration (y-y) - cm4.11
Elastic Modulus (x-x) - cm31520
Elastic Modulus (y-y) - cm3201
Plastic Modulus (x-x) - cm31730
Plastic Modulus (y-y) - cm3313
Buckling Parameter - u0.881
Torsional Index - x24.4
Warping Constant - H dm60.728
Torsional Constant - J cm493
Area of Section - A cm2109

Full sortable table: Properties table for this category