Help with dimensioning

[petsor]

Hello,
I am going to build a garage with (essentially) a flat roof, about a 6-degree slope. The size will be 6*5 meters. This means that the roof beams will have a span of about 4.6 meters. What dimension should I use? wood? laminated wood? Kerto?

Best regards

 

[dejmon]

4.6 meters, shouldn't you have any overhang (eaves)?

..//N

 

[petsor]

There will be a minimal overhang of about 20 cm, which means that the roof beams will be approximately 5.4 m. Free span will be about 4.6 + support approx. 2*0.2 + overhang 2*0.2.

 

[dejmon]

Would think that glulam is enough, but I feel unsure!

..//N