Specifications include, but are not limited to: The chassis frame shall be of a ladder type design utilizing industry accepted engineering best practices. The frame shall be specifically designed for fire apparatus use. Each frame rail shall be constructed of two .375" thick formed channels. The outer channel shall be 10.188" x 3.50” x .375” and the inner channel (liner) shall be 9.31” x 3.13” x .375”. Over the entire length of the frame rail, the section modulus shall be 31.8 in.3 . The resistance to bending moment (RBM) shall be 1,590,000 in./lbs. The cross members shall be constructed of minimum .375" formed channels and have formed gusseted ends at the frame rail attachment. Single axle rear suspensions will utilize 3 piece bolt assembled cross members at each suspension hanger. Each rail is media blasted to remove scale, oil, and contaminants. This blasting also ensures paint adhesion. Each rail will be primed with Cathacoat 302HB, a high performance, two component, reinforced inorganic zincrich primer with proven cathodic protection of steel structures, prior to assembly. .625 inch, grade 8 flange, Huck bolt fasteners shall be used on all permanently attached brackets to the frame to eliminate the need for bolt retightening. There shall be two front tow eyes with 3” diameter holes attached directly to the chassis frame, accessible below the front bumper.