Specifications include, but are not limited to: This specification is intended to cover a 7.5 cubic yards minimum struck capacity hydraulic driven chemical and material spreader for use in AHTD dump trucks. Type: Shall be designed for mounting in dump body with spinner at the rear and below floor of dump body. The spreader shall be a self-contained unit with hopper type body, conveyor system, hydraulic drive, spinner and all necessary components integrally mounted as single unit. Shall have the capacity to spread material to a maximum width of no less than 24. Hopper Body: Hopper shall have a minimum struck capacity of 7.5 cubic yards. Shall be electrically welded construction, adequately reinforced, with no less than 10 gauge 304 stainless steel sides and ends. Sides to slope approximately 45 degrees to allow material to feed into conveyor by gravity. Bottom shall be constructed of no less than 7 gauge 304 stainless steel. Front of hopper shall be sloped to allow spreader to be mounted in a dump body which has the hydraulic cylinder hoist housing in the front of the body. (Refer to Paragraph 11 for hydraulic cylinder hoist housing dimensions.) All hopper hardware shall be stainless steel. In addition, any long sills, crossmembers or side supports used in the design of the spreader shall be constructed of 304 stainless steel. Top Screen: A top screen is not required. Conveyor: Shall have a minimum overall width of 24" and be designed to handle sand, cinders and de-icing chemicals discharging material to spinner at rear of spreader. Shall be equipped with spring loaded idler adjusters to maintain proper conveyor tension. Drive: Conveyor and spinner shall be driven by hydraulic motors. Drive to conveyor and spinner assembly to be as regularly furnished by manufacturer. Shall be designed to operate on an open center hydraulic system with a minimum output of 15 gpm at 1,500 psi. (Hydraulic pump will be furnished by AHTD.)
