Thanks for your kind reply Joel.
I'm right then in thinking then- one cubic foot of timber is equal to 12 board feet?
Would (for example) an 8"x8"x10 foot beam be containing 53.4 board feet/4.5 cu ft?
Would an 14"x7"x20 foot beam contain 164 board feet/13.7 cu ft?
Sorry to pester you, I just want to get it clear in my mind!
Thanks, Hayton