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Structural · W — wide-flange

W12x136 Steel Beam — Dimensions & Properties

W12x136 weighs 136 lb/ft and is about 13.41 in deep. Below: the full AISC section properties, a scaled cross-section, and a pre-filled weight calculator.

Weight
136lb/ft
Depth
13.41in
Width
12.4in
Area
39.9in²
Shape
W12X136 · 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 × W12X136
2,720lb
Per piece
2720lb
Pieces
1
Total
2720lb
Tons
1.36t
d13.41"bf 12.4"tw 0.79
ƒShow the math
  1. 1.Weight per foot (from AISC)per AISC Shapes Database v16.0

    W12X136 is a listed shape; its nominal weight is a published property.

    = 136 lb/ft
  2. 2.Length in feet
    length (in) ÷ 12
    240 ÷ 12
    = 20 ft
  3. 3.Weight per piece
    weight per foot × length
    136 × 20
    = 2720 lb
  4. 4.Total weight
    weight per piece × quantity
    2720 × 1
    = 2720 lb
  5. 5.Convert to tons
    total lb ÷ 2000
    2720 ÷ 2000
    = 1.36 tons

Section properties

Geometry
Weight
136lb/ft
Area, A
39.9in²
Depth, d
13.41in
Flange width, bf
12.4in
Flange thick, tf
1.25in
Web thick, tw
0.79in
Strong axis (x-x)
Ix
1,240in⁴
Sx
186in³
Zx
214in³
rx
5.58in
Weak axis (y-y)
Iy
398in⁴
Sy
64.2in³
Zy
98in³
ry
3.16in
Torsion & warping
J
18.5in⁴
Cw
14,700in⁶
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.

W12x14 14 lb/ftW12x16 16 lb/ftW12x19 19 lb/ftW12x22 22 lb/ftW12x26 26 lb/ftW12x30 30 lb/ftW12x40 40 lb/ftW12x50 50 lb/ftW12x65 65 lb/ftW12x87 87 lb/ft

W12x136 — questions

How much does a W12x136 weigh per foot?
A W12x136 weighs 136 lb/ft. Over a 20-foot length that is 2,720 lb (1.36 tons); a 30-foot length is 4,080 lb.
What are the dimensions of a W12x136?
W12x136 has an actual depth of 13.41 in and a flange width of 12.4 in, a flange thickness of 1.25 in, and a web thickness of 0.79 in. Cross-sectional area is 39.9 in².
What is the moment of inertia and section modulus of a W12x136?
About its strong axis, W12x136 has a moment of inertia Ix of 1,240 in⁴ and a section modulus Sx of 186 in³, with a plastic section modulus Zx of 214 in³. Use these with your engineer's design values — they are geometric properties, not an allowable load.
What does W12x136 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 W12x136 is a nominally 12-inch-deep wide-flange beam weighing 136 lb/ft (actual depth 13.41 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.