common > Really, you have MS in mechanical engineering?
Thanks for the tochacha, I have a PhD in a related engineering, but I am indeed not qualified to build anything, even a Sukkah.
I read up specifically on airflows [some of the work published last year was fascinating – such as measuring air flows in simulated airplanes] and did some experiments myself in several offices and shuls to measure CO2, particle levels – that are proxies for how much air re-circulates and particle level indicates how much air is filtered and and how much comes from outside (I can do calculations, my MS is in Applied Math). I ran the results by a couple of “real” engineers. And I think I know when to send for a real mechanical engineer, like you. What were your recommendations for your shul/school/office?