of beverage the conventional one inch thick composite floor with shiplap joint between boards is not suitable for this type of application due to the stress concentration at the corners of the 0 5 inch thick shiplaps and due to the high number of load cycles encountered in typical beverage hauling applications the cyclical load test of the floor system was conducted according to ttma rp 37 02 a forklift truck with a front axle load of 16 000 pounds was cycled 3000 times along the center axis of the one inch composite floor having the composite lap joint in a van trailer an additional 3000 load cycles were applied at the front axle load of 17 500 pounds on the same floor after 6000 load cycles on the floor boards there was no observable damage to the floor boards on both the top and bottom sides and at the composite lap joint after the final completion of the testing the loaded floor boards were removed and closely observed for signs of cracks the composite lips of the boards were intact without any fracture of the transverse glass fibers of the composite layer surprisingly the epoxy resin of the composite was crazed at the corner of the wood layer and the composite lip it appeared that the crazing of epoxy may have increased the flexibility of the composite lip which in turn helped to avoid gross fracture of the lip and debonding of the composite lip from the wood layer the caulk effectively bonded adjacent boards at the lap joints and maintained.