Towable floor frame assembly

A towable unified floor frame assembly, comprising:

• two elongate inner load-supporting steel I-beams disposed parallel to a longitudinal axis of said floor frame assembly, each of said I-beams having respective front and rear ends;
• a front member and a rear member, connected normal to and between the respective front and rear ends of said I-beams;
• a plurality of elongate metal cross members, each having an L-shaped cross-section with a vertical portion thereof disposed above a horizontal portion, said cross members extending normal to and between the I-beams and connected to at least lower flanges thereof;
• an elongate inner member disposed longitudinally along said axis, said inner member being provided with a plurality of vertical notches which are shaped, sized and located to fit over and closely receive said vertical portions of said L-shaped cross members;
• two elongate outer members attached to said front and rear end members to define therewith a perimeter of said floor frame assembly, said perimeter having substantially vertical inner and outer perimeter surfaces substantially defined by corresponding inner and outer surfaces of said outer members and said front and rear end members;
• a plurality of trusses disposed normal to said I-beams and said outer members, said trusses being disposed at predetermined locations inwardly of said front and rear ends of said outer beams in correspondence with respective ones of said cross members, each truss being connected at respective outermost ends to said elongate outer members at said inner perimeter surface provided thereby, wherein each of said trusses comprises
• an upper horizontal element disposed above said I-beams and having an uppermost surface coplanar with respective uppermost surfaces of said front and rear end members and said elongate outer members,
• a vertically depending inner element located to fit to a side of said inner member and to end inside a corresponding L-shaped cross member,
• two vertically depending outer elements, respectively located to each fit closely to the outermost edge of an upper flange of a corresponding one of said I-beams, and
• two bracing members, each extending outwardly and upwardly from the lowermost end of a corresponding one of said outer elements to connect underneath the upper horizontal element at a location intermediate the closest I-beam and the closest distal end of said upper horizontal element;
• a plurality of metal connecting elements, each attached underneath one of said inclined bracing elements beneath the respective lowermost end thereof and attached at a distal end to the closest I-beam, whereby each of said trusses is securely connected to both I-beams;
• a floor mounted atop and to said elongate outer beams, said front and rear end members, and said trusses;
• carrier means comprising a plurality of load-bearing wheels, said carrier means being shaped and sized to detachably attach underneath said I-beams;
• and
• towing means securely attachable to said I-beams at the respective front ends thereof for applying a towing force to said floor frame assembly.