
Windsor-Severence Fire Protection District
Heavy Rescue
Production Specification
SVI #774 Page 71 of 126 April 19, 2010
EXTERIOR ALUMINUM BODY
The fabrication of the body shall be constructed from aluminum 3003H-14 alloy smooth plate. This shall include
compartment front panel, vertical side sheets, side upper rollover panels, rear panels and compartment door frames.
The body compartment floors and exterior panels shall be constructed with not less than 3/16" (.187) aluminum 3003H-14
smooth plate. Interior compartment dividing walls shall be constructed with not less than 1/8" (.125) aluminum 3003H-14
smooth plate. Lighter gauge sheet metal will not be acceptable in these areas.
The door side frame openings shall be formed "C" channel design. An electrical wiring conduit raceway running the full
length of exterior compartments shall be provided. This raceway shall contain all 12 volt wiring running to the rear of the
apparatus, permitting easy accessibility to wiring.
Individual compartment modules, with dead air space voids between compartments, will not be an acceptable method of
compartment construction.
The compartments shall be an integral part of the body construction. Compartment floors from front of body to ahead of
rear axle, also from rear axle to rear of body shall be single one-piece sections. Compartment floors shall be preformed,
then positioned in body and welded into final position.
Compartment floors shall have a "sweep-out" design with door opening threshold positioned lower than compartment
floor, permitting easy cleaning of compartments. Angles, lips, or door moldings are not acceptable in the base of
compartment door opening. One-way rubber drain valves shall be provided in compartment floors so that a water hose
may be used to flush-out compartment area.
All exterior seams in sheet metal below frame, and around the rear wheel well area shall be welded continuous to prevent
moisture from entering compartments. All other interior seams and corners shall be sealed with silicone based caulk prior
to painting.
Only stainless steel bolts, nuts, and sheet metal screws shall be used in mounting exterior trim, hardware and equipment.
Exterior compartments shall have louvers in lower back wall of compartment for ventilation.
ROOF CONSTRUCTION
The roof shall be integral with the body and shall be all welded construction. The roof shall be reinforced with 2" x 2"
tubing running the full width of the body. All seams in the roof area shall be welded prior to paint to prevent entry of
moisture.
BODY SUBFRAME
To assure proper body alignment and clearance, the body subframe shall be constructed directly on the chassis.
The chassis frame rails shall be fitted with 1/4" custom extruded UHMW polyethylene rail cap to isolate the body frame
members from direct contact with chassis frame rails.
The body subframe shall be constructed from 6061T6 aluminum alloy tubing. Subframe shall consist of two (2) 2" x 6" x
1/4" aluminum tubes, the same width as the chassis frame rails, NO EXCEPTION. Welded to this tubing shall be
crossmembers of 2" x 6" x 1/4" aluminum. These crossmembers shall extend the full width of the body to support the
compartments. Crossmembers shall be located at front and rear of the body, below compartment divider walls, and in
front and rear of wheel well opening. Additional aluminum crossmembers shall be located as necessary to support
walkway or heavy equipment.
To form the frame, the tubing shall be beveled and welded at each joint using 5356 aluminum alloy welding wire.
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