W16X31 Dimensions & Weight
W16X31 is an AISC wide-flange (W) shape with an actual depth of 15.88 in and a 5.53 in wide flange, weighing 31 lb per foot — a workhorse size for floor beams and roof framing on commercial jobs.
W16X31 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 15.88 in | 403.4 mm |
| Flange width (bf) | 5.53 in | 140.3 mm |
| Cross-section area (A) | 9.12 in² | 58.8 cm² |
| Weight | 31 lb/ft | 46.1 kg/m |
What does W16X31 weigh and cost?
W16X31 weighs 31 lb per foot. At an example material price of $0.92/lb that is about $28.52 per foot. Set your quantity, length, and price to total your own run:
Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Pricing more than one size? Build a full member list in the free calculator →
Stop counting W16X31s by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every W16X31, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight