An I-beam is any of various structural members with an I or H-shaped cross-section. Technical terms for similar items include H-beam, universal column (UC), w-beam, universal beam (UB), rolled steel joist (RSJ), or double-T. I-beams are typically made of structural steel and serve a wide variety of construction uses.
An I-beam used to support the first floor of a house
Mark di Suvero's Victor's Lament (foreground in red) on the campus of Muhlenberg College in Allentown, Pennsylvania, is an I-beam sculpture paying tribute to the rich history of steelmaking in the Lehigh Valley region of the eastern Pennsylvania.
A rusty riveted steel I-beam
Structural steel is a category of steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices, etc., are regulated by standards in most industrialized countries.
Structural steel roof at Manchester Victoria Station
A steel I-beam, in this case used to support timber joists in a house
Metal deck and open web steel joist receiving spray fireproofing plaster, made of polystyrene-leavened gypsum
