Does anyone know where I can download standard sheet metal duct construction details from? Doesn't have to be complete or necessarily SMACNA standard. Just have to show something for permit.
Does anyone out there have a rule of thumb for calculating the size of a standard expansion tank (non-bladder) for a chilled water system? For hot water systems the rule of thumb I use is 2.0 gallons of capacity per boiler horse power for small systems and 1.5 for large systems. I know some...
