Spans are calculated based on the following applied loadings, any additional loadings will reduce the maximum spans shown:
| Depth | WS200 - 195mm | WS200 - 219mm | WS250 - 254mm | WS300 - 304mm | WS400 - 417mm | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Spacing | 400 | 600 | 400 | 600 | 400 | 600 | 400 | 600 | 400 | 600 |
| 72mm | 4000 | 3350 | 4820 | 4200 | 5250 | 4690 | 5840 | 5170 | 6630 | 5250 |
| 97mm | 4610 | 3510 | 5160 | 4560 | 5610 | 4970 | 6220 | 5550 | 7030 | 6050 |
| 122mm | 4870 | 3650 | 5440 | 4810 | 5910 | 5220 | 6590 | 5780 | 7340 | 6350 |
| 147mm | 5090 | 3770 | 5670 | 5000 | 6150 | 5450 | 6850 | 5910 | 7610 | 6450 |
| Width | Approximate Maximum Span (mm) | |||||||||