W14x74 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W14x74 is an American wide-flange beam 14.2 inches (360.7 mm) deep with a 10.1 in (256.5 mm) flange, weighing 74 pounds per foot (110.1 kg/m) — that is what the "74" 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 | 14.2 in (360.7 mm) |
| Flange width bf | 10.1 in (256.5 mm) |
| Web thickness tw | 0.45 in (11.4 mm) |
| Flange thickness tf | 0.785 in (19.9 mm) |
Weight & Cross-Section
| Weight per foot | 74 lb/ft (110.1 kg/m) |
| 20 ft bar | 1,480 lb |
| 40 ft bar | 2,960 lb |
| Area A | 21.8 in² (140.6 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 795 in⁴ (33,090 cm⁴) |
| Section modulus Sx | 112 in³ (1,835 cm³) |
| Radius of gyration rx | 6.04 in |
| Moment of inertia Iy | 134 in⁴ (5,577 cm⁴) |
| Section modulus Sy | 26.6 in³ (436 cm³) |
| Radius of gyration ry | 2.48 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W14x68 | 14 × 10 | 68 | 722 | 103 | −8 % | −9 % |
| W14x74 (this page) | 14.2 × 10.1 | 74 | 795 | 112 | — | — |
| W14x82 | 14.3 × 10.1 | 82 | 881 | 123 | +11 % | +11 % |
Deflection example
A simply supported W14x74 spanning 23 ft with a 10 kip point load at midspan deflects 0.19 in (E = 29,000 ksi, Ix = 795 in⁴). The L/360 serviceability limit for this span is 0.77 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W14x74 beam weigh?
W14x74 weighs 74 pounds per foot (110.1 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 1,480 lb and a 40 ft bar 2,960 lb.
What are the dimensions of a W14x74?
W14x74 is 14.2 in (360.7 mm) deep with a 10.1 in (256.5 mm) wide flange. The web is 0.45 in thick and the flanges are 0.79 in thick. Note the actual depth differs from the nominal W14 label — always design with the actual value.
What are the dimensions of a W14x74 in mm?
W14x74 is 360.7 mm deep with a 256.5 mm wide flange; the web is 11.4 mm and the flange 19.9 mm thick. In metric section properties: Ix = 33,090 cm⁴, Sx = 1,835 cm³.
How much does a W14x74 weigh in kg?
110.1 kg per meter. A 6 m bar weighs 661 kg and a 12 m bar 1,322 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W14x74?
About the strong axis, Ix = 795 in⁴ (33,090 cm⁴) with section modulus Sx = 112 in³. About the weak axis, Iy = 134 in⁴ and Sy = 26.6 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W14x74 or W14x82 — what does one size up change?
W14x82 is about 11% heavier (82 vs 74 lb/ft) but about 11% stiffer (Ix 881 vs 795 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