W21 Beam Sizes
The W21 series runs 21 sizes, from W21x275 at 275 lb/ft to W21x44 at 44 lb/ft. They share a nominal depth and a common set of rolls, so a size change within the series usually keeps the connection detail intact.
W21 sizes, heaviest first
| Size | lb/ft | d (in) | A (in²) | Ix (in⁴) | Sx (in³) | Zx (in³) |
|---|---|---|---|---|---|---|
| W21x275 | 275 | 24.1 | 81.8 | 7,690 | 638 | 749 |
| W21x248 | 248 | 23.7 | 73.8 | 6,830 | 576 | 671 |
| W21x223 | 223 | 23.4 | 66.5 | 6,080 | 520 | 601 |
| W21x201 | 201 | 23 | 59.3 | 5,310 | 461 | 530 |
| W21x182 | 182 | 22.7 | 53.6 | 4,730 | 417 | 476 |
| W21x166 | 166 | 22.5 | 48.8 | 4,280 | 380 | 432 |
| W21x147 | 147 | 22.1 | 43.2 | 3,630 | 329 | 373 |
| W21x132 | 132 | 21.8 | 38.8 | 3,220 | 295 | 333 |
| W21x122 | 122 | 21.7 | 35.9 | 2,960 | 273 | 307 |
| W21x111 | 111 | 21.5 | 32.6 | 2,670 | 249 | 279 |
| W21x101 | 101 | 21.4 | 29.8 | 2,420 | 227 | 253 |
| W21x93 | 93 | 21.6 | 27.3 | 2,070 | 192 | 221 |
| W21x83 | 83 | 21.4 | 24.4 | 1,830 | 171 | 196 |
| W21x73 | 73 | 21.2 | 21.5 | 1,600 | 151 | 172 |
| W21x68 | 68 | 21.1 | 20 | 1,480 | 140 | 160 |
| W21x62 | 62 | 21 | 18.3 | 1,330 | 127 | 144 |
| W21x57 | 57 | 21.1 | 16.7 | 1,170 | 111 | 129 |
| W21x55 | 55 | 20.8 | 16.2 | 1,140 | 110 | 126 |
| W21x50 | 50 | 20.8 | 14.7 | 984 | 94.5 | 110 |
| W21x48 | 48 | 20.6 | 14.1 | 959 | 93 | 107 |
| W21x44 | 44 | 20.7 | 13 | 843 | 81.6 | 95.4 |
Nominal depth is not actual depth; the tabulated d above is what to detail to.
Relevant tools
- Steel Shape Properties Table
search and compare across every series
- Beam Shear, Moment and Deflection Diagram Calculator
check a span made up of one of these sizes
- All Shape Series
every published series, W-shapes through round HSS