I want to park a 3,500 lb car in the barn but do not know if the floor will support it. Floor boards are 2x6's The joists are 2X8s on 14" center. Every other joist is double (2 2x8s) The beams are two (2) 4x8s on 12' centers. The beam supports are 4-5" diameter logs on 10' centers Please advise Marty