W12X79 Dimensions & Weight

W12X79 is an AISC wide-flange (W) shape with an actual depth of 12.38 in and a 12.08 in wide flange, weighing 79 lb per foot — a common size for light floor framing, mezzanines, and residential beams.

W12X79 Dimensions

Property	Imperial	Metric
Depth (d)	12.38 in	314.5 mm
Flange width (bf)	12.08 in	306.8 mm
Cross-section area (A)	23.2 in²	149.7 cm²
Weight	79 lb/ft	117.6 kg/m

What does W12X79 cost?

At an example material price of $0.92/lb, W12X79 runs about $72.68 per foot, or roughly $1,454 for a 20-ft length.

Example pricing only. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.

Counting W12X79s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.

Related sizes

W12X1414 lb/ft
W12X1616 lb/ft
W12X1919 lb/ft
W12X2222 lb/ft
W12X2626 lb/ft
W12X3030 lb/ft
W12X3535 lb/ft
W12X4040 lb/ft

Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight