Beams

A steel beam is a structural steel product that is made to support heavy loads. Steel beams come in different sizes and types, hence their different applications in the construction of structures and buildings. The specifications of a structure determine the geometry, size and shape of beams. These beams can be straight or curved.

Designation Weight per Meter (w) kg Sectional Area (a) cm2 Depth of Section (h) mm Width of flange (b) mm Thickness of Flange (tf) mm Thickness of Web (tw) mm
ISMB 100 11.5 14.6 100 75 7.2 4
ISMB 125 13 16.6 125 75 7.6 4.4
ISMB 150 14.9 19 150 80 7.6 4.8
ISMB 175 19.3 24.62 175 90 8.6 5.5
ISMB 200 25.4 32.33 200 100 10.8 5.7
ISMB 225 31.2 39.72 225 110 11.8 6.5
ISMB 250 37.3 47.55 250 125 12.5 6.9
ISMB 300 44.2 56.26 300 140 12.4 7.5
ISMB 350 52.4 66.71 350 140 14.2 8.1
ISMB 400 61.6 78.46 400 140 16 8.9
ISMB 450 72.4 92.27 450 150 17.4 9.4
ISMB 500 86.9 110.74 500 180 17.2 10.2
ISMB 550 103.7 132.11 550 190 19.3 11.2
ISMB 600 122.6 156.21 600 210 20.8 12
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Description

Types of Steel Beams

Types of steel beams based on support
• Simply supported beams: These beams are supported at the ends and are free to rotate.
• Fixed beams: These are supported at the ends but cannot rotate.
• Over-hanging beams: This kind of beam extends beyond its support on one side.
• Double over-hanging beams: These extend beyond the supports on both ends.
• Continuous beam: Extends for two or more supports.
• Cantilever: Fixed on one end but projecting outwards
• Trussed beam: This beam is reinforced by a rod or a cable to make a truss.