Specifications include, but are not limited to: 413 CHASSIS 414 _____Chassis provided is to be a new, tilt-type, custom fire apparatus. 415 _____The chassis is to be manufactured in the apparatus body builder's facility, thus eliminating 416 any split responsibility. 417 _____The chassis is to be designed and manufactured for heavy-duty service with adequate 418 strength and capacity to sustain the intended load and the type of service required. 419 420 WHEELBASE 421 ______The wheelbase of the vehicle shall be no greater than 255.00. 422 423 GVW RATING 424 ______The gross vehicle weight rating shall not exceed 76,000. 425 426 FRAME 427 _____The chassis frame is to be built with two (2) steel channels bolted to five (5) cross 428 members or more, depending on other options of the apparatus. 429 _____The side rails are to have a 13.38" tall web over the front and mid sections of the chassis, 430 with a continuous smooth taper to 10.75" over the rear axle. 431 _____Each rail is to have a section modulus of 25.992 cubic inches and a resisting bending 432 moment (rbm) of 3,119,040 in-lb over the critical regions of the frame assembly, with a 433 section modulus of 18.96 cubic inches with an rbm of 2,275,200 in-lb over the rear axle. 434 _____The frame rails are to be constructed of 120,000 psi yield strength heat-treated 0.38" thick 435 steel with 3.50" wide flanges.