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3.2.4 Curb weight. The curb weight shall include the weight of the chassis and cab, with all
attachments, accessories, and equipment; fifth wheel; and full complement of fuel, lubricants and
coolant. The curb weight shall be not greater than 22,000 pounds.
3.2.5 Gross vehicle weight. GVW shall consist of curb weight, operator (weight computed at
175 pounds), and a payload to provide not less than the specified GVW.
3.2.6 Weight distribution. The suspension system, axle and tire capacities shall be not less
than 18,000 pounds on the front axle and 46,000 pounds on the rear bogie. The fourth axle shall
be a spring up, air pressure down, self-steering, pusher type (dead) axle located forward of the
rear bogie, as specified in The fourth axle shall have suspension, axle and tire capacities
of not less than 20,000 pounds. The rear bogie and the fourth axle combined shall be capable of
supporting a load of not less than 65,000 pounds with the vehicle operating at 55 miles per
hour (mph).
3.2.7 Gross combination weight. GCW shall consist of the truck tractor curb weight,
operator weight (computed at 175 pounds), and the weight of a semitrailer loaded to provide not
less than the specified GCW. The fifth wheel shall be located so that with the truck tractor loaded
to GVW, the load ratings of the chassis components are not exceeded.
3.2.8 Rating. Vehicle ratings shall be the manufacturer's published ratings. Component and
vehicular ratings shall not be raised to meet the requirements of this specification. When
published ratings are not available, verification of ratings shall be available to the engineering
office of the procuring activity. The minimum GVW rating shall be 80,000 pounds. The
minimum GCW rating shall be 145,000 pounds.
3.2.9 Washington State vehicle laws. The vehicle, when loaded to rated GVW, shall comply
with all State of Washington motor vehicle laws in effect on the date of manufacture, including
regulations and conditions governing "Overweight/Oversize Vehicle Permits."
3.2.10 Accessibility. The design of the vehicle and optional equipment shall permit access for
routine servicing and shall permit access for replacement and adjustment of component parts and
accessories with minimal disturbance of other components and systems.
3.2.11 Asbestos. Asbestos materials shall not be used in any form in any part of the vehicle.
*  3.2.12 Dissimilar metals. All dissimilar metals used throughout the vehicle shall be insulated
from one another to prevent galvanic or electrolytic action.

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