torque box chassis frame for firefighting vehicles or the like constituting a platform for extendible aerial ladders the vehicle torque box chassis frame includes elongated lower and upper members significantly spaced from each other having rigid bracing structure interposed therebetween resulting in a rigid elongated box of significant rectangular cross section dimension the torque box chassis frame rear end is defined by a rigid ladder turntable support including its own vertical rigid columns and spaced outrigger support tubes for receiving hydraulic outrigger jacks are integrally defined on the torque box chassis frame to provide firm support of the torque box upon the ground eliminating the influence of the vehicle suspension system application_number US 537493 A description the overall environment of a fire truck torque body in accord with the invention is best represented in fig1 wherein an entire fire truck vehicle is illustrated the fire truck basic component is the frame or chassis 10 much of which forms the torque box construction of the invention the frame is supported on front wheels 12 and dual rear wheels 14 which are attached to the frame 10 by conventional suspension structure 16 which may be formed by leaf springs torsion springs or air bags as is well known in the art the truck cab 18 is located at the front end of the frame 10 and includes the engine and other vehicle control components as well as providing an enclosure for the firemen during transportation the usual pump structure 20 may be mounted upon the frame 10 and other apparatus may be mounted upon the truck frame as is commonly used with firefighting equipment as the inventive concept pertains to torque boxes used with aerial ladders an extendible ladder 22 is pivotally mounted upon the bracket 24 which is attached to the.