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Structural · W — wide-flange

W24x84 Steel Beam — Dimensions & Properties

W24x84 weighs 84 lb/ft and is about 24.1 in deep. Below: the full AISC section properties, a scaled cross-section, and a pre-filled weight calculator.

Weight
84lb/ft
Depth
24.1in
Width
9.02in
Area
24.7in²
Shape
W24X84 · W — wide-flange

Enter feet + inches, e.g. 20' or 18' 6".

= 20' (240″)
pcs
Cost estimate (optional)
$/lb

Optional. Prices are volatile — use your current mill/supplier rate.

Total weight
1 × W24X84
1,680lb
Per piece
1680lb
Pieces
1
Total
1680lb
Tons
0.84t
d24.1"bf 9.02"tw 0.47
ƒShow the math
  1. 1.Weight per foot (from AISC)per AISC Shapes Database v16.0

    W24X84 is a listed shape; its nominal weight is a published property.

    = 84 lb/ft
  2. 2.Length in feet
    length (in) ÷ 12
    240 ÷ 12
    = 20 ft
  3. 3.Weight per piece
    weight per foot × length
    84 × 20
    = 1680 lb
  4. 4.Total weight
    weight per piece × quantity
    1680 × 1
    = 1680 lb
  5. 5.Convert to tons
    total lb ÷ 2000
    1680 ÷ 2000
    = 0.84 tons

Section properties

Geometry
Weight
84lb/ft
Area, A
24.7in²
Depth, d
24.1in
Flange width, bf
9.02in
Flange thick, tf
0.77in
Web thick, tw
0.47in
Strong axis (x-x)
Ix
2,370in⁴
Sx
196in³
Zx
224in³
rx
9.79in
Weak axis (y-y)
Iy
94.4in⁴
Sy
20.9in³
Zy
32.6in³
ry
1.95in
Torsion & warping
J
3.7in⁴
Cw
12,800in⁶
Before you rely on this
  • Listed weight is the AISC theoretical (nominal) weight per foot. Actual mill weight varies within ASTM rolling tolerance, roughly ±2.5%.
  • This is bare member steel only. Add plates, stiffeners, connections, bolts, and coatings for a full erected-steel takeoff.

Similar shapes

Same series and nearest depths — compare weight and section modulus when you are sizing.

W24x55 55 lb/ftW24x62 62 lb/ftW24x68 68 lb/ftW24x76 76 lb/ftW24x94 94 lb/ftW24x104 104 lb/ftW24x117 117 lb/ftW24x131 131 lb/ftW24x146 146 lb/ftW21x122 122 lb/ft

W24x84 — questions

How much does a W24x84 weigh per foot?
A W24x84 weighs 84 lb/ft. Over a 20-foot length that is 1,680 lb (0.84 tons); a 30-foot length is 2,520 lb.
What are the dimensions of a W24x84?
W24x84 has an actual depth of 24.1 in and a flange width of 9.02 in, a flange thickness of 0.77 in, and a web thickness of 0.47 in. Cross-sectional area is 24.7 in².
What is the moment of inertia and section modulus of a W24x84?
About its strong axis, W24x84 has a moment of inertia Ix of 2,370 in⁴ and a section modulus Sx of 196 in³, with a plastic section modulus Zx of 224 in³. Use these with your engineer's design values — they are geometric properties, not an allowable load.
What does W24x84 mean?
The W means wide-flange. The first number is the nominal depth in inches and the second is the weight in pounds per foot — so W24x84 is a nominally 24-inch-deep wide-flange beam weighing 84 lb/ft (actual depth 24.1 in).

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Sources & references

Estimates for planning purposes only. Verify all results against the code edition adopted in your jurisdiction and with your Authority Having Jurisdiction (AHJ). This tool is not a substitute for a licensed professional engineer. See our methodology, sources, and code editions.

Data: AISC Shapes Database v16.0, © AISC — used per its developer-use provision.