MC3X7.1 Dimensions & Weight

MC3X7.1 is an AISC miscellaneous channel with a nominal depth of 3 in, weighing 7.1 lb per foot — commonly used for stair stringers, lintels, trimmers, and edge framing.

Get the AISC weights table (Excel): MC3X7.1 and every other size

Free. Needs a free Steelflo account (also includes 3 free takeoffs, no card).

or start a free takeoff to count MC3X7.1 on your drawing.

Weights for every AISC size, in Excel. All AISC sizes in Excel. Free with a Steelflo account.

Get the weights table

MC3X7.1 Dimensions

Property	Imperial	Metric
Nominal depthfrom the designation	3 in	76.2 mm
Cross-section area (A)computed from weight and steel density	2.09 in²	13.5 cm²
Weight	7.1 lb/ft	10.6 kg/m

Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.

What does MC3X7.1 weigh and cost?

MC3X7.1 weighs 7.1 lb per foot. At an example material price of $0.92/lb that is about $6.53 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

Count them on my drawing →

Total weight

142 lbs

Material cost

$130.64

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 →

Tallying by hand?

Free steel takeoff template (Excel) with 4,600+ sections across 6 standards built in

Free. Needs a free Steelflo account (also includes 3 free takeoffs, no card).