It will have an asymmetrical gable roof with a span of 8000mm.
Do you think a scissor truss could handle these conditions I've sketched without having to support it with a glulam beam and maybe a support in the middle of the house?
It features tongue and groove boards and concrete tiles.

The house dimensions are 8000mm x 18000mm

2nib6ol.jpg
 
It may not look exactly as you drew it, but it can be done.

Turn to a truss factory and ask them to calculate it.
 
andersmc said:
It may not turn out exactly as you've drawn it, but it's possible.

Contact a roof truss factory and ask them to calculate it for you.
I hope so too because I don't draw that well :p
But you think it's possible and will be a reasonable solution?
It would be nice to avoid glulam and having to unload onto an internal wall.
 
8 meters width is not that much.
You can manage 10 with regular W trusses and CC 120 built with regular timber, so it definitely can be done with a scissor truss on 8 meters.
Then maybe it becomes profitable to reduce the CC measurements a bit, but that's something a "proper" designer needs to calculate.
 
I have free-standing trusses (symmetrical) with an 8m span, 32º exterior and 25º interior, completely open to the ridge inside. If you have the knowledge and tools, it should be possible to make them asymmetrical just as well. Depending on the angles and snow zone, it may require c-c 900 or even c-c 600.
 
Thanks. I'll ask the manufacturer to draw it for me.
 
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