dimension of the roof beams

[Stonken]

Hi, I am planning to replace the roof on a carport located between 2 storage sheds. The span is 5300mm, currently supported by 2 posts in the middle of the carport. I would like to remove them, what do you think I need for the dimension of the roof beams? The slope is about 5 degrees.

 

[fahlis]

Somewhere in the range of 45 x 330 or 70 x 270mm

 

[Stonken]

Okay, 270 might feel a bit low. Would 56x225 glulam work there instead?

 

[hempularen]

You can check out Moelven and their calculation program. You need glulam at least 90x270 it seems, but even then you get quite significant deflection. Over 50mm.