If you expect to get rich, or just work 40 hrs a week, engineering is not for you. HVAC/R engineering is stable when construction is good. When construction is taking a beating, so is our field.
My experience has been that a well educated 'experienced' engineer is very employable. We have...
Or you could use preinsulated flexible duct, and have flexibility (pun NOT intended) and code compliance along with low cost AND ease of installation.
It has to be cheap, all the contractors want to use miles of it...
Using PVC for ductwork is NOT recommended. The flame spread and smoke developed for PVC piping does not meet the ASTM E84 guidelines of a flame spread index of less than 25 and a smoke-developed index of less than 50 which is specifically prohibited in plenums.
ASTM E84 is why almost all...
