You're not familiar with the _universal_ situation of a beam/joist/ lintel being oriented vertically...?
wow
I realize that usenet attracts people from around the globe, but I had not realized that you were from an area with different physical laws. Maybe if you strapped on your Orgone Accumulator and beamed your questions directly to the Hive Mind, you'd get answers that would apply in your realm. Just a thought.
Good _luck_ with your project!
R