W24x250 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W24x250 is an American wide-flange beam 26.3 inches (668 mm) deep with a 13.2 in (335.3 mm) flange, weighing 250 pounds per foot (372.1 kg/m) — that is what the "250" 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 | 26.3 in (668 mm) |
| Flange width bf | 13.2 in (335.3 mm) |
| Web thickness tw | 1.04 in (26.4 mm) |
| Flange thickness tf | 1.89 in (48 mm) |
Weight & Cross-Section
| Weight per foot | 250 lb/ft (372.1 kg/m) |
| 20 ft bar | 5,000 lb |
| 40 ft bar | 10,000 lb |
| Area A | 73.5 in² (474.2 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 8,490 in⁴ (353,379 cm⁴) |
| Section modulus Sx | 644 in³ (10,553 cm³) |
| Radius of gyration rx | 10.7 in |
| Moment of inertia Iy | 724 in⁴ (30,135 cm⁴) |
| Section modulus Sy | 110 in³ (1,803 cm³) |
| Radius of gyration ry | 3.14 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W24x229 | 26 × 13.1 | 229 | 7,650 | 588 | −8 % | −10 % |
| W24x250 (this page) | 26.3 × 13.2 | 250 | 8,490 | 644 | — | — |
Deflection example
A simply supported W24x250 spanning 42 ft with a 10 kip point load at midspan deflects 0.11 in (E = 29,000 ksi, Ix = 8,490 in⁴). The L/360 serviceability limit for this span is 1.4 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W24x250 beam weigh?
W24x250 weighs 250 pounds per foot (372.1 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 5,000 lb and a 40 ft bar 10,000 lb.
What are the dimensions of a W24x250?
W24x250 is 26.3 in (668 mm) deep with a 13.2 in (335.3 mm) wide flange. The web is 1.04 in thick and the flanges are 1.89 in thick. Note the actual depth differs from the nominal W24 label — always design with the actual value.
What are the dimensions of a W24x250 in mm?
W24x250 is 668 mm deep with a 335.3 mm wide flange; the web is 26.4 mm and the flange 48 mm thick. In metric section properties: Ix = 353,379 cm⁴, Sx = 10,553 cm³.
How much does a W24x250 weigh in kg?
372.1 kg per meter. A 6 m bar weighs 2,232 kg and a 12 m bar 4,465 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W24x250?
About the strong axis, Ix = 8,490 in⁴ (353,379 cm⁴) with section modulus Sx = 644 in³. About the weak axis, Iy = 724 in⁴ and Sy = 110 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W24x250 or W24x229 — what does one size down change?
W24x229 is about 8% lighter (229 vs 250 lb/ft) but about 10% less stiff (Ix 7,650 vs 8,490 in⁴). Check deflection before downsizing — stiffness falls much faster than weight.
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