no longer offopic.
AFAIK european standard is valid in switzerland too. Some remarks:
- AFAIK european standard misses loads for switzerland, means you may need SIA 260 and SIA 261 for loads
- There is a documentation in Switzerland for wind on masts see http://shop.sia.ch/dokumentationen/inge ... /D/Product
there might be another one especially for masts ...
- I did some masts in 3000 m 15 years ago. I remember some special formula because density of air is much less as higher the mast is. As less density as less pressure for the same wind speed.
we may get in contact directly thomas.
Ahh normaly in switzerland there is no Prüfingenieur at all. You even do not need to give you structural calculations (Statik) to someone else. You just hand out your drawings.