Thank you so much Andrew from Tiny r(e)volution for the shout out on your podcast. It has been a pleasure talking to you and we appreciate all your help.
Follow the link here to listen to the podcast: http://tinyrevolution.us/2012/11/29/november-29-2012-podcast-interview-with-kristie-wolfe/
This is what my father in law used to determine the measurements for our roof. He had to study his bible!