I would be sq. ruling. The timbers range from 16 to 24 feet in length. Most have a common dimension of 10 inches like6x10, 8x10, 10x10,10x12 There are a few 8x8 not many. In all I think there are 73 total. Like I said they were used to move a large fan motor out of a power plant where they could not get a crane in the building.