W21X57 Dimensions & Weight
W21X57 is an AISC wide-flange (W) shape with an actual depth of 21.06 in and a 6.56 in wide flange, weighing 57 lb per foot — a size you will see on longer floor spans and transfer framing.
Count every W21X57 on your drawing — upload a PDF, get the member list. 3 free takeoffs, no card.
Count every W21X57 on your drawing. Count W21X57 on your drawing. 3 free takeoffs, no card.
Start a free takeoffW21X57 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 21.06 in | 534.9 mm |
| Flange width (bf) | 6.56 in | 166.5 mm |
| Cross-section area (A) | 16.7 in² | 107.7 cm² |
| Weight | 57 lb/ft | 84.8 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does W21X57 weigh and cost?
W21X57 weighs 57 lb per foot. At an example material price of $0.92/lb that is about $52.44 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.
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Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight