Regarding the orientation, it is obviously necessary to take into account the constraints of the ground, but ideally, a north / south alignment is to be favored: thus the greenhouse is warmed over its entire length by the morning sun in the east and by west in the afternoon. In the middle of summer and at times when the sun is the "strongest", the impacted surface is smaller, which reduces overheating ...
Regarding ventilation during the summer period, there is the possibility on small tunnels (3 to 5 m wide) to insert crates between 2 leaves *, in their vertical part: this obviously implies having several leaves, so a certain length of greenhouse or fairly narrow leaves ...
The issue of the wind is resolved by properly burying the film at the bottom of the piers (by forming a "U" with the film): the water always flows in this buried gutter and gives weight to the earth.
* The leaves overlap 40 to 60 cm and it gives that in practice:
