I-Beam Girder Small 183×320 Medium 367×640 Large 587×1024 Download Tiff Original 1368×2388 | (164.3 KB) Description An I-Beam girder is a load bearing beam of steel or iron. It is shaped like a capital letter I. Keywords bridge, building, construction, integrity, ironwork, metallurgy, steel, strength Galleries Construction Industry, Iron and Steel Industry Source: