small roof problem

Hello all - I posted this in the cubby house section, but it's really a roofing question - I imagine all the same practices will apply at a smaller scale. Hoping someone can help.

I'm on the job with a cubby house project for my son and barring more rain, hope to make significant progress over easter.

I've got the floor platform done and the wall frames constructed, but am having trouble with how to deal with the roof. I've done a fair bit of web searching and can't find anything with enough detail to show what to do.

The size of the floor is 2400 x 2000.

I don't want a flat roof, and there seems to be several methods for achieving a pitched roof. Can anyone assist with how to construct the framing, how to attach it to the walls and what size timber to use for either rafters or trusses ? Was going to use corrogated metal sheeting for the roof covering.

would greatly appreciate some advice.

regards

Ned


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