W10x112 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W10x112 is an American wide-flange beam 11.4 inches (289.6 mm) deep with a 10.4 in (264.2 mm) flange, weighing 112 pounds per foot (166.7 kg/m) — that is what the "112" 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 | 11.4 in (289.6 mm) |
| Flange width bf | 10.4 in (264.2 mm) |
| Web thickness tw | 0.755 in (19.2 mm) |
| Flange thickness tf | 1.25 in (31.8 mm) |
Weight & Cross-Section
| Weight per foot | 112 lb/ft (166.7 kg/m) |
| 20 ft bar | 2,240 lb |
| 40 ft bar | 4,480 lb |
| Area A | 32.9 in² (212.3 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 716 in⁴ (29,802 cm⁴) |
| Section modulus Sx | 126 in³ (2,065 cm³) |
| Radius of gyration rx | 4.66 in |
| Moment of inertia Iy | 236 in⁴ (9,823 cm⁴) |
| Section modulus Sy | 45.3 in³ (742 cm³) |
| Radius of gyration ry | 2.68 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W10x100 | 11.1 × 10.3 | 100 | 623 | 112 | −11 % | −13 % |
| W10x112 (this page) | 11.4 × 10.4 | 112 | 716 | 126 | — | — |
Deflection example
A simply supported W10x112 spanning 18 ft with a 10 kip point load at midspan deflects 0.1 in (E = 29,000 ksi, Ix = 716 in⁴). The L/360 serviceability limit for this span is 0.6 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W10x112 beam weigh?
W10x112 weighs 112 pounds per foot (166.7 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 2,240 lb and a 40 ft bar 4,480 lb.
What are the dimensions of a W10x112?
W10x112 is 11.4 in (289.6 mm) deep with a 10.4 in (264.2 mm) wide flange. The web is 0.76 in thick and the flanges are 1.25 in thick. Note the actual depth differs from the nominal W10 label — always design with the actual value.
What are the dimensions of a W10x112 in mm?
W10x112 is 289.6 mm deep with a 264.2 mm wide flange; the web is 19.2 mm and the flange 31.8 mm thick. In metric section properties: Ix = 29,802 cm⁴, Sx = 2,065 cm³.
How much does a W10x112 weigh in kg?
166.7 kg per meter. A 6 m bar weighs 1,000 kg and a 12 m bar 2,000 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W10x112?
About the strong axis, Ix = 716 in⁴ (29,802 cm⁴) with section modulus Sx = 126 in³. About the weak axis, Iy = 236 in⁴ and Sy = 45.3 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W10x112 or W10x100 — what does one size down change?
W10x100 is about 11% lighter (100 vs 112 lb/ft) but about 13% less stiff (Ix 623 vs 716 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