Universal Beams - 686x254x170

Steel universal beams (UBs), often called "I-beams," are structural steel bars with a cross-section shaped like the letter "I". They feature a vertical central section (the web) and two horizontal flat plates at the top and bottom (the flanges) that are perfectly parallel to each other. The web is designed to resist vertical shearing forces, while the long flanges provide exceptional strength against bending under heavy loads. Because they are highly efficient at carrying weight across long spans with minimal bending, they are the go-to choice for main structural supports, floor joists, and roof beams in modern commercial and residential buildings.

Individual CAD files can be downloaded as either DWG files or compressed in a ZIP folder

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
cm4170000
cm46630
cm28
cm5.53
cm34920
cm3518
cm35630
cm3811
u0.872
x31.8
H dm67.42
J cm4308
A cm2217

Full sortable table: Properties table for this category