Rafters and battens to deck roof?

[DEVLPA]

Have 200x50 F17 HW rafters to new deck spanning 5000mm, at what centres should these be placed?

same with roof bettens 50x38 HW - what centres?

Thanks

EDIT: Sorry forgot to mention its for a colorbond/zinc roof

[silentC]

5 metres is outside the scope of the span tables, but I would think 900mm centres assuming it's a sheet roof.

For the battens, they're a bit on the small side. Span tables say 600mm centres.

[DEVLPA]

yeah i thought the battens might be a bit small but should they suffice?

[silentC]

My span table for battens says rafter span of 900 batten spacing 600, use F8 38x50

[DEVLPA]

thanks