I've got all the software I need but what I'm looking for is a book or something where I can find the actual formulas & factors used for calculations. What I need is a form sheet where I put my sq. ft. walls,widows etc..& then gives me the factors needed to multiply where I have to calculate each item seperately instead of the program doing it for me. Years ago before computers I had a book that I used to do my load calculations with .
I've been learning a little javascript & I'd like to give it a try but I need to be able to do a calculation manually before I begin.
Any ideas?