W24x94 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W24x94 is an American wide-flange beam 24.3 inches (617.2 mm) deep with a 9.07 in (230.4 mm) flange, weighing 94 pounds per foot (139.9 kg/m) — that is what the "94" in the designation means. All values below are the standard AISC published section properties used in US structural design, with metric equivalents alongside.
Typical uses: floor and roof framing, columns, headers, and general steel construction. For a quick stiffness check, see the deflection example below or open the beam calculator with your own span and load.
Dimensions
| Depth d | 24.3 in (617.2 mm) |
| Flange width bf | 9.07 in (230.4 mm) |
| Web thickness tw | 0.515 in (13.1 mm) |
| Flange thickness tf | 0.875 in (22.2 mm) |
Weight & Cross-Section
| Weight per foot | 94 lb/ft (139.9 kg/m) |
| 20 ft bar | 1,880 lb |
| 40 ft bar | 3,760 lb |
| Area A | 27.7 in² (178.7 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 2,700 in⁴ (112,382 cm⁴) |
| Section modulus Sx | 222 in³ (3,638 cm³) |
| Radius of gyration rx | 9.87 in |
| Moment of inertia Iy | 109 in⁴ (4,537 cm⁴) |
| Section modulus Sy | 24 in³ (393 cm³) |
| Radius of gyration ry | 1.98 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W24x84 | 24.1 × 9.02 | 84 | 2,370 | 196 | −11 % | −12 % |
| W24x94 (this page) | 24.3 × 9.07 | 94 | 2,700 | 222 | — | — |
| W24x104 | 24.1 × 12.8 | 104 | 3,100 | 258 | +11 % | +15 % |
Deflection example
A simply supported W24x94 spanning 39 ft with a 10 kip point load at midspan deflects 0.27 in (E = 29,000 ksi, Ix = 2,700 in⁴). The L/360 serviceability limit for this span is 1.3 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W24x94 beam weigh?
W24x94 weighs 94 pounds per foot (139.9 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 1,880 lb and a 40 ft bar 3,760 lb.
What are the dimensions of a W24x94?
W24x94 is 24.3 in (617.2 mm) deep with a 9.07 in (230.4 mm) wide flange. The web is 0.52 in thick and the flanges are 0.88 in thick. Note the actual depth differs from the nominal W24 label — always design with the actual value.
What are the dimensions of a W24x94 in mm?
W24x94 is 617.2 mm deep with a 230.4 mm wide flange; the web is 13.1 mm and the flange 22.2 mm thick. In metric section properties: Ix = 112,382 cm⁴, Sx = 3,638 cm³.
How much does a W24x94 weigh in kg?
139.9 kg per meter. A 6 m bar weighs 839 kg and a 12 m bar 1,679 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W24x94?
About the strong axis, Ix = 2,700 in⁴ (112,382 cm⁴) with section modulus Sx = 222 in³. About the weak axis, Iy = 109 in⁴ and Sy = 24 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W24x94 or W24x104 — what does one size up change?
W24x104 is about 11% heavier (104 vs 94 lb/ft) but about 15% stiffer (Ix 3,100 vs 2,700 in⁴). Going one step up within the same depth group is usually the cheapest way to cut deflection.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About