I am rebuilding a 32' x 48' barn. It originally had 8 x 8 beams supported approx. every 10 feet for the 32' width. It then had 6" log "joists" 12' long, 2' OC spanning the * x 8's. The 6" logs were topped with wide planks that were 1 1/2 " thick. The sides of the barn were 10' tall, and the...