W21X55 Dimensions & Weight
W21X55 is an AISC wide-flange (W) shape with a cross-section area of 16.16 in², weighing 55 lb per foot — a size that shows up in general building framing.
Count every W21X55 on your drawing — upload a PDF, get the member list. 3 free takeoffs, no card.
Count every W21X55 on your drawing. Count W21X55 on your drawing. 3 free takeoffs, no card.
Start a free takeoffW21X55 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Nominal depthfrom the designation | 21 in | 533.4 mm |
| Cross-section area (A)computed from weight and steel density | 16.16 in² | 104.3 cm² |
| Weight | 55 lb/ft | 81.8 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does W21X55 weigh and cost?
W21X55 weighs 55 lb per foot. At an example material price of $0.92/lb that is about $50.60 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