Wind load to observation tower

[Josha456]

Hi

I am doing a check on an observation tower which essentially consists of a wooden hut on a bare braced steel frame and wanted to check if my wind loading is correct. I am using Eurocodes and the tower arrangement with a clad structure on top doesn't appear to be considered directly, from what i understand the wind pressures to the hut part is worked out the assuming a fully clad structure then simply ignoring the bare frame part, does this seem reasonable.

thanks