W21x57 — Dimensions and Section Properties
Dimensions and key properties
- Weight
- = 57 lb/ft
- A
- = 16.7 in²
- d
- = 21.1 in
- Ix
- = 1,170 in⁴
- Sx
- = 111 in³
- Zx
- = 129 in³
- rx
- = 8.36 in
- ry
- = 1.35 in
Section properties
| Property | Value | Unit |
|---|---|---|
| Weight | 57 | lb/ft |
| A | 16.7 | in² |
| d | 21.1 | in |
| bf | 6.56 | in |
| tf | 0.65 | in |
| tw | 0.405 | in |
| Ix | 1,170 | in⁴ |
| Sx | 111 | in³ |
| Zx | 129 | in³ |
| rx | 8.36 | in |
| Iy | 30.6 | in⁴ |
| Sy | 9.35 | in³ |
| Zy | 14.8 | in³ |
| ry | 1.35 | in |
Other sizes in the W21 series
Relevant tools
- Steel Shape Properties Table
search and compare W21x57 against other sections
- Beam Shear, Moment and Deflection Diagram Calculator
find the moment this section has to carry, and how far it deflects under load
- ASTM A992
the grade most W-shapes are supplied in