QUAKE UP DURING A EARTHQUAKE A PARKMODEL CAN NOT FALL IN  THE REAR BECAUSE THE AXLES AND TIRES ARE REQUIRED BY THE STATE TO REMAIN ON. BUT IN THE FRONT, BECAUSE THE TONGUE IS REMOVED, IT CAN FALL SO WE REPLACE THE TONGUE WITH TWO MAXI PIERS THAT LOCK ON THE I-BEAMS AND ARE RATED AT SIXTY THOUSAND POUNDS EACH.