W18X35 Dimensions & Weight
W18X35 is an AISC wide-flange (W) shape with an actual depth of 17.7 in and a 6 in wide flange, weighing 35 lb per foot — a workhorse size for floor beams and roof framing on commercial jobs. It is the lightest of the 23 W18 sizes listed here.
Count every W18X35 on your drawing — upload a PDF, get the member list. 3 free takeoffs, no card.
Count every W18X35 on your drawing. Count W18X35 on your drawing. 3 free takeoffs, no card.
Start a free takeoffW18X35 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 17.7 in | 449.6 mm |
| Flange width (bf) | 6 in | 152.4 mm |
| Cross-section area (A) | 10.3 in² | 66.5 cm² |
| Weight | 35 lb/ft | 52.1 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does W18X35 weigh and cost?
W18X35 weighs 35 lb per foot. At an example material price of $0.92/lb that is about $32.20 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