Span widths of self-supporting wooden frame ceiling

Hello everyone,

first of all: I do not want a structural calculation or anything like that, but rather a question about the general construction

I want to build a pool house in the garden. 6m long, 4m wide The construction will be done using timber frame construction. Towards the garden, I would like to avoid having any obstructive wall or support if possible, and the roof should not rest on anything there either. Now the question arises as to how I ideally design/build the roof structure so that my project is also practical in reality. Perhaps you have drawings/plans/cross-sections showing how such a construction looks in practice. I have already googled but unfortunately without much success, so I am hoping for your help.

Or do the roof beams actually rest only on the two short wall sections and are then connected at the front on the cantilevered edge by tenons or joist hangers?

I hope it is understandable what I mean.

Attached are example photos showing how I imagine the construction.

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Thank you very much.

Every carpenter will plan that for you. Or is this supposed to be a DIY project?

Yes exactly, I am building the project myself, hence the question.

Don't you also need a plan and then a building permit for that.

Let someone calculate that who knows about structural engineering. Wind load, snow load, self-weight, and a 4x6m sail surface are not trivial, especially with a missing corner support. Maybe you will find a building plan on the internet.

As mentioned at the beginning, I do not want a static calculation for loads, etc. here. I have already looked at several construction manuals for various garden houses, and unfortunately none of them were built accordingly. They are mostly made of single-layer wood. Here, a proper wooden stud frame with double-sided boarding is being built. I am actually only interested in a drawing/sketch, etc. of how such a roof structure can be implemented without a large bearing surface or how it can then possibly be specially fastened. Dimensioning/statics are not included here.