W24x146 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W24x146 is an American wide-flange beam 24.7 inches (627.4 mm) deep with a 12.9 in (327.7 mm) flange, weighing 146 pounds per foot (217.3 kg/m) — that is what the "146" 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 | 24.7 in (627.4 mm) |
| Flange width bf | 12.9 in (327.7 mm) |
| Web thickness tw | 0.65 in (16.5 mm) |
| Flange thickness tf | 1.09 in (27.7 mm) |
Weight & Cross-Section
| Weight per foot | 146 lb/ft (217.3 kg/m) |
| 20 ft bar | 2,920 lb |
| 40 ft bar | 5,840 lb |
| Area A | 43 in² (277.4 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 4,580 in⁴ (190,633 cm⁴) |
| Section modulus Sx | 371 in³ (6,080 cm³) |
| Radius of gyration rx | 10.3 in |
| Moment of inertia Iy | 391 in⁴ (16,275 cm⁴) |
| Section modulus Sy | 60.5 in³ (991 cm³) |
| Radius of gyration ry | 3.01 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W24x131 | 24.5 × 12.9 | 131 | 4,020 | 329 | −10 % | −12 % |
| W24x146 (this page) | 24.7 × 12.9 | 146 | 4,580 | 371 | — | — |
| W24x162 | 25 × 13 | 162 | 5,170 | 414 | +11 % | +13 % |
Deflection example
A simply supported W24x146 spanning 40 ft with a 10 kip point load at midspan deflects 0.17 in (E = 29,000 ksi, Ix = 4,580 in⁴). The L/360 serviceability limit for this span is 1.33 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W24x146 beam weigh?
W24x146 weighs 146 pounds per foot (217.3 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 2,920 lb and a 40 ft bar 5,840 lb.
What are the dimensions of a W24x146?
W24x146 is 24.7 in (627.4 mm) deep with a 12.9 in (327.7 mm) wide flange. The web is 0.65 in thick and the flanges are 1.09 in thick. Note the actual depth differs from the nominal W24 label — always design with the actual value.
What are the dimensions of a W24x146 in mm?
W24x146 is 627.4 mm deep with a 327.7 mm wide flange; the web is 16.5 mm and the flange 27.7 mm thick. In metric section properties: Ix = 190,633 cm⁴, Sx = 6,080 cm³.
How much does a W24x146 weigh in kg?
217.3 kg per meter. A 6 m bar weighs 1,304 kg and a 12 m bar 2,607 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W24x146?
About the strong axis, Ix = 4,580 in⁴ (190,633 cm⁴) with section modulus Sx = 371 in³. About the weak axis, Iy = 391 in⁴ and Sy = 60.5 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W24x146 or W24x162 — what does one size up change?
W24x162 is about 11% heavier (162 vs 146 lb/ft) but about 13% stiffer (Ix 5,170 vs 4,580 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