Spans are based on pipe filled with water and maximum sag of 2.5mm at center of span.
Pipe support spans specified are in metres.
| Nom Dia mm | Nom Dia inches | Support Span for Sch 40 PVC pipe | ||
|---|---|---|---|---|
| @ 60°F | @ 100°F | @ 140°F | ||
| 15 | 1/2 | 1.3 | 1.2 | 1.15 |
| 20 | 3/4 | 1.35 | 1.3 | 1.2 |
| 25 | 1 | 1.5 | 1.45 | 1.35 |
| 40 | 1 1/2 | 1.7 | 1.6 | 1.5 |
| 50 | 2 | 1.75 | 1.7 | 1.6 |
| 50 | 2 | 1.9 | 1.8 | 1.75 |
| 80 | 3 | 2.3 | 2.1 | 2.05 |
| 100 | 4 | 2.5 | 2.35 | 2.3 |
| 150 | 6 | 2.9 | 2.75 | 2.6 |
| 200 | 8 | 3.2 | 3.05 | 2.95 |
| 250 | 10 | 3.5 | 3.35 | 3.2 |
| 300 | 12 | 3.8 | 3.55 | 3.4 |
| Nom Dia mm | Nom Dia inches | Sch 80 PVC pipe | ||
|---|---|---|---|---|
| @ 60°F | @ 100°F | @ 140°F | ||
| 15 | 1/2 | 1.35 | 1.2 | 1.15 |
| 20 | 3/4 | 1.45 | 1.35 | 1.3 |
| 25 | 1 | 1.6 | 1.5 | 1.45 |
| 40 | 1 1/2 | 1.75 | 1.65 | 1.6 |
| 50 | 2 | 1.8 | 1.75 | 1.68 |
| 50 | 2 | 1.95 | 1.9 | 1.8 |
| 80 | 3 | 2.4 | 2.25 | 2.1 |
| 100 | 4 | 2.65 | 2.5 | 2.4 |
| 150 | 6 | 3.2 | 3.05 | 2.9 |
| 200 | 8 | 3.5 | 3.35 | 3.2 |
| 250 | 10 | 3.85 | 3.7 | 3.5 |
| 300 | 12 | 4.25 | 4 | 3.8 |