Size (mm) |
Single Spans |
|||||||
Floor Joists – Joist Spacing (mm) |
||||||||
300 |
400 |
450 |
480 |
600 |
||||
140×42 |
3.9 |
3.2 |
3.1 |
3.0 |
2.9 |
|||
190×42 |
5.0 |
4.6 |
4.4 |
4.3 |
4.1 |
|||
240×42 |
5.9 |
5.5 |
5.3 |
5.3 |
5.0 |
|||
290×42 |
6.8 |
6.3 |
6.2 |
6.1 |
5.7 |
|||
140×65 |
4.4 |
3.9 |
3.6 |
3.6 |
3.4 |
|||
190×65 |
5.5 |
5.1 |
5.0 |
4.9 |
4.6 |
|||
240×65 |
6.6 |
6.1 |
6.0 |
5.9 |
5.5 |
|||
290×65 |
7.6 |
7.1 |
6.9 |
6.8 |
6.4 |
|||
Size (mm) |
Continuous Spans |
|||||||
Floor Joists – Joist Spacing (mm) |
||||||||
300 |
400 |
450 |
480 |
600 |
||||
140×42 |
4.3 |
4.0 |
3.7 |
3.6 |
3.4 |
|||
190×42 |
5.4 |
5.0 |
4.9 |
4.8 |
4.6 |
|||
240×42 |
6.5 |
6.0 |
5.8 |
5.7 |
5.4 |
|||
290×42 |
7.5 |
6.9 |
6.7 |
6.6 |
6.3 |
|||
140×65 |
4.8 |
4.5 |
4.3 |
4.3 |
4.0 |
|||
190×65 |
6.1 |
5.6 |
5.5 |
5.4 |
5.1 |
|||
240×65 |
7.2 |
6.7 |
6.5 |
6.4 |
6.1 |
|||
290×65 |
8.3 |
7.8 |
7.5 |
7.4 |
7.0 |
Span values are in metres