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 | 3710 | 3050 | 4660 | 3720 | 5070 | 4400 | 5630 | 4830 | 6370 | 5550 |
| 97mm | 4390 | 3650 | 4970 | 4330 | 5420 | 4830 | 6030 | 5400 | 6780 | 5690 |
| 122mm | 4710 | 3770 | 5250 | 4620 | 5710 | 5090 | 6360 | 5680 | 7080 | 5740 |
| 147mm | 4990 | 3840 | 5450 | 4810 | 5940 | 5300 | 6630 | 5910 | 7350 | 5830 |
| Width | Approximate Maximum Span (mm) | |||||||||