An I-beam, also known as H-beam, W-beam (for "wid... - dofaq.co
i beam

An I-beam, also known as H-beam, W-beam (for "wid...

wikipedia - 12 Aug 2015
An I-beam, also known as H-beam, W-beam (for "wide flange"), Universal Beam (UB), Rolled Steel Joist (RSJ), or double-T (especially in Polish, Bulgarian, Spanish, Italian and German), is a beam with an I or H-shaped cross-section. The horizontal elements of the "I" are known as flanges, while the vertical element is termed the "web". I-beams are usually made of structural steel and are used in construction and civil engineering.

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