What's the fall on a garage roof?

[Johnboy54]

Hi!
The garage is 7 metres long.
What fall should there be per metre from front to back, please?
Is it the same as waste pipes, which I think is 1/2" per metre?
I did say, 'I think'.
I rang building regs for advice, but they said to wait until the inspector comes to look at the footings.
Reading other's comments on here, it depends on the inspector!
Such as, 'Get yourself an architect', etc.
I'm so glad for sites like this!
Thanks.
John.

 

[freddiemercurystwin]

Congratulate yourself Johnboy54, absolute minimum is 1:80 which is in fact 1/2" per 1m run.

 

[Johnboy54]

Thanks for the reply.
That makes it much better for reducing the volume.
Anything over 70 cu m needed planning permission.
This kind of fall keeps it within that figure.
Thanks again.
John