The deck is 9x3.6 meters and bear with me as I may not use the correct terms.
The posts consist of two joined 45x95 (five at the front edge, and one on each side, and on the house wall there's a 70x45 screwed in where the roof rests). The plank over the front posts is 195x45. From the house wall outward, there are 95x45 with a center-to-center measurement of 70, and on top of them in the other direction, there are 70x45 with a center-to-center measurement of 60. The height difference is 15-17 cm between the house wall and the outer part. The roof is a simple plastic roof.
In winter, the roof will be supported, and the snow will be shoveled off, but is it way too flimsy?