For truss spans of 13m to 16m, the steelbrace shall be in an X-shape configuration over the whole roof with an additional braced bay at each end and intermediate braced bays at maximum 13000mm centres, as shown.
Steelbrace layout for very long roof, spans 13m to 16m
Figure C5-04-05-01
Maximum overall truss spans for steelbrace
| Maximum overall truss span, m | |||||||
|---|---|---|---|---|---|---|---|
| Wind | Roof Pitch | ||||||
| Single brace | Double brace | ||||||
| <15° | <15° to 20° | <15° | 15° to 20° | 20°+ to 30° | 30°+ to 35° | 35°+ to 45° | |
| N1-N3, | 16.0 | 16.0 | 16.0 | 16.0 | 16.0 | 16.0 | 13.5 |
| N4, C2 | 15.5 | 13.0 | 16.0 | 16.0 | 14.5 | 13.5 | N/S |
| C3 | Not suitable | Not suitable | 16.0 | 15.5 | Not suitable | Not suitable | Not suitable |