Truck Trailer Equipment

(1) Tanks qualify under basic rules and shall not exceed 1,200 gallons water capacity. (2) Tanks shall be fastened to trailers as follows: (a) Tanks shall be provided with substantial cradles, welded to the tanks. The cradles shall be situated directly over front and rear axles and bolted thereto. (b) On trailers of the bed type, cross members made of channel iron or equivalent thereof, shall be placed directly across the bed and bolted to the two side members of the trailer frame, and the tank cradles bolted rigidly thereto. (c) Tanks in use prior to the effective date of these rules and regulations, not provided with cradles shall have welded thereto, cradles or substantial lugs which shall be bolted to the trailer frame or axle in order to prevent rotating, backward or forward motion. (d) The only two wheel type trailer that will be permissible shall be the one of the heavy cane field type or equivalent thereof, and any container installed on such a trailer shall have its centroid located 6” forward from the centroid of the trailer proper. This is to allow the trailer to tilt forwards instead of backwards in the event that the connection between the trailer and the motor vehicle should break. Installation shall be the same as in paragraph (2) of this Section. (3) All trailers shall be firmly and securely attached to the vehicle drawing them by means of draw-bars, supplemented by safety chains. (4) Fittings qualified under basis rules and fittings shall be protected from mechanical injury in case of over turning by means of a metal box or cylinder with open top welded to container over the fittings or by means of rigid guards, well-braced, welded on both sides of fittings, or by means of a metal dome. The thickness of said metal box, cylinder, guard, or dome shall be at least equal to that of the container to which it is being welded, and the height at least equal to that of the fittings. If a metal dome is used the relief valve shall be properly vented through the dome. (a) If liquid withdrawal line is installed at bottom of container, the connections thereto, including hose, shall not extend downward lower than the lowest horizontal edge of the trailer axle. Provisions shall be made whereby the hose shall be fastened to the trailer while in transit. (5) Valve requirement: (a) Tanks shall have excess flow valves in liquid withdrawal line and shall have positive shut-off valve attached to the excess flow valve, and if hose is used, it shall have a relief valve direct to liquid section of hose to prevent excessive pressures. (6) Trailers shall be equipped with proper devices to drain off such static charges as may be generated. (7) Filling of container: (a) To assist in filling a container, a line may be attached to the vapor return valve of the container, but it will not be permissible to “bleed” a trailer tank to the open air to assist in filling, except in field filling - 100’ from public highways or adjacent properties.