thaks this does help,ive been trying to figure roof height and so on,im trying for a 24 by 32 building,im thinking 9 foot ceiling,i restore antique cars and motorcycles so i want to lay everything out just right,i have a fair amount of equiptment and tools, i want to try and organize it so i can use every square foot possible,im getting older and cant afford to be falling over things,i figure i can put my compressor out side under roof to save room,i was thinking about putting some square tubing in the floor to slide my polisher , tube bender etc to save room just hang it on the wall when not in use, thanks everyone dave