tfin,
I would start by reading the IBC, IFC, and relevant NFPA codes. This will give you a good starting point for what you're going to need. You'll need to read the codes with your application in mind.
He's a link to the IBC and IFC I use often...
Hello RES3001,
When I worked in a resin production and paint facility our yields would vary from product to product, mostly dependent on solids loading and viscosity. It sounds like the resins you are blending are fairly viscous, as you are heating them before transfer. 2% is not unreasonable...