Steve,
Math and science are opinion free.
Check the latest ROP, i think Roland was involved, there was something
about the 6" not allowing a fire to spread, and i remember thinking it
made sense. However that does not mean it was accepted. I would check
but i have "left the building". (thanks for mentioning my name, Sir!
*****
free neighborhood wifi is Soooo undependable-- i checked and Roland
was suggesting a 2" max gap-- even that was rejected!
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