Universal Beams - 686x254x170

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/m170.2
D mm692.9
B mm255.8
t mm14.5
T mm23.7
r mm15.2
d mm615.1
b/T5.4
d/t42.4
C mm9
N mm132
n mm40
m22.35
m213.8

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Second Moment of Area (x-x) - cm4170000
Second Moment of Area (y-y) - cm46630
Radius of Gyration (x-x) - cm28
Radius of Gyration (y-y) - cm5.53
Elastic Modulus (x-x) - cm34920
Elastic Modulus (y-y) - cm3518
Plastic Modulus (x-x) - cm35630
Plastic Modulus (y-y) - cm3811
Buckling Parameter - u0.872
Torsional Index - x31.8
Warping Constant - H dm67.42
Torsional Constant - J cm4308
Area of Section - A cm2217

Full sortable table: Properties table for this category