Universal Beams - 406x178x54

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/m54.1
D mm402.6
B mm177.7
t mm7.7
T mm10.9
r mm10.2
d mm360.4
b/T8.15
d/t46.8
C mm6
N mm96
n mm22
m21.48
m227.3

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Second Moment of Area (x-x) - cm418700
Second Moment of Area (y-y) - cm41020
Radius of Gyration (x-x) - cm16.5
Radius of Gyration (y-y) - cm3.85
Elastic Modulus (x-x) - cm3930
Elastic Modulus (y-y) - cm3115
Plastic Modulus (x-x) - cm31050
Plastic Modulus (y-y) - cm3178
Buckling Parameter - u0.871
Torsional Index - x38.3
Warping Constant - H dm60.392
Torsional Constant - J cm423.1
Area of Section - A cm269

Full sortable table: Properties table for this category