Floor Joists (MGP10, Domestic Load)
| Size (mm) |
Spacing (mm) |
Max Span (m) |
| 90×35 | 450 | 2.80 |
| 90×45 | 450 | 3.20 |
| 140×45 | 450 | 4.20 |
| 190×45 | 450 | 5.30 |
| 240×45 | 450 | 6.40 |
Rafters (MGP10, Roof Dead + Live Load)
| Size (mm) |
Spacing (mm) |
Max Span (m) |
| 90×45 | 600 | 2.60 |
| 120×45 | 600 | 3.20 |
| 140×45 | 600 | 3.80 |
| 190×45 | 600 | 5.00 |
Deck Bearers (F17 Hardwood)
| Size (mm) |
Spacing Between Supports (m) |
Max Deck Load |
| 140×45 | 1.80 | Standard Residential |
| 190×45 | 2.70 | Standard Residential |
| 240×45 | 3.60 | Light Commercial |
Ceiling Joists (Non-Load Bearing)
| Size (mm) |
Spacing (mm) |
Max Span (m) |
| 70×35 | 450 | 2.50 |
| 90×35 | 450 | 3.00 |
| 120×35 | 450 | 3.80 |