FRAMEWORK: Main Frame: 24" wide flange I-Beam 55# per ft. Cross Members: 8" I-Beam 10# per ft. Side Rails: 12" channel 20.7# per ft. UNDERCARRIAGE: Tandem 25, 000# oil bath axles 12 14" x 7 12" brakes, both axles 8-hole Budd wheels (8) Unimount 9700 Hutch Suspension 23575R17.5 16more...