Spans are based on uninsulated pipe filled with water.
Pipe support spans and deflections are in millimetres.
Maximum deflection specified is at center of span.

| Dia mm | Dia inches | Pipe Schedule | Support Span |
Maximum Deflection |
Support Span |
Maximum Deflection |
|---|---|---|---|---|---|---|
| 20 | 3/4 | 80 | 3000 | 10 | 2800 | 6.35 |
| 25 | 1 | 80 | 3950 | 13 | 3200 | 6.35 |
| 40 | 1 1/2 | 40 | 5150 | 19 | 3950 | 6.35 |
| 50 | 2 | 40 | 5750 | 25 | 4300 | 6.35 |
| 50 | 2 | 80 | 6050 | 25 | 4450 | 6.35 |
| 80 | 3 | 40 | 7600 | 25 | 5300 | 6.35 |
| 100 | 4 | 40 | 8200 | 25 | 5900 | 6.35 |
| 150 | 6 | 40 | 10000 | 25 | 7000 | 6.35 |
| 200 | 8 | 30 | 10950 | 25 | 9400 | 12.7 |
| 250 | 10 | 20 | 11550 | 25 | 10100 | 12.7 |
| 250 | 10 | 40 | 12500 | 25 | 10600 | 12.7 |
| Dia mm | Dia inches | Pipe Schedule | Support Span |
Maximum Deflection |
Support Span |
Maximum Deflection |
|---|---|---|---|---|---|---|
| 300 | 12 | 20 | 12150 | 25 | 10800 | 12.7 |
| 300 | 12 | STD | 13400 | 25 | 11400 | 12.7 |
| 350 | 14 | 10 | 12800 | 25 | 11150 | 12.7 |
| 350 | 14 | STD | 14000 | 25 | 11800 | 12.7 |
| 400 | 16 | 10 | 13400 | 25 | 10400 | 12.7 |
| 400 | 16 | STD | 14600 | 25 | 11200 | 12.7 |
| 450 | 18 | 10 | 13700 | 25 | 10900 | 12.7 |
| 450 | 18 | STD | 15200 | 25 | 11700 | 12.7 |
| 500 | 20 | 10 | 14300 | 25 | 11200 | 12.7 |
| 500 | 20 | 20 | 15800 | 25 | 12100 | 12.7 |
| 600 | 24 | 10 | 14900 | 25 | 11800 | 12.7 |
| 600 | 24 | 20 | 16700 | 25 | 12800 | 12.7 |