Re: Shingle Color Choice. Just some additional food for thought from the FSEC. This is just one paragraph out of a 67 page report. I disagree with the final findings of this labratory approach method of determining heat gain or loss dependant upon shingle color alone.
Definition of concrete. 1 : naming a real thing or class of things the word poem is concrete, poetry is abstract. 2 : formed by coalition of particles into one solid mass. 3a : characterized by or belonging to immediate experience of actual things or eventsb : specific, particular a concrete proposalc : real, tangible concrete evidence.
A global variable can be referenced anywhere numeric expressions are allowed in a model. If a variable or attribute is needed only in a single block of logic, it is easier to define a local variable right inside the logic block. Global variables are defined in the Variables Editor, accessed from the Build menu. Local variables are defined with the INT and REAL statements. See for more information.