Quote:
Originally Posted by thevillages2013
Yes it does but it is totally irrelevant whether it is a door or window. Also it doesn’t really distribute the weight it removes it totally from what is beneath it and places it on the sides of the opening.
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Just for the intellectual challenge, I'll suggest that's partially true.
In theory, it removes sufficient weight from the rough opening, that the opening is self-supported (for lack of a better description).
Depend on the height of the opening, that weight then moves diagonally back to the structure (I believe). In other words, a "header" on a 3rd floor of a structure removes sufficient weight in a RO, only to a certain "depth". That load eventually moves back to the fulcrum/base and a 2nd header would be required to put a window into the 1st floor of that wall.
Am I missing something?
& again, if we're talking precast concrete, it's a whole other can of worms.