Technical information

Norman Wells Fire Department
SVI Emergency Vehicles
NORNWLR-0002 11/02/12
Page 21 of 63
ROOF CONSTRUCTION
The roof shall be integral with the body and shall be all welded construction. The roof of the body shall not be less
than 3/16" aluminum 3003H-14 alloy tread plate, fully and continuously welded. The roof shall be reinforced with
2" x 2" x 1/4" aluminum tubing running the full width of the body.
All seams in the roof area shall be welded to the radius and supports prior to paint to prevent entry of moisture. All
roof seams shall be continuously welded.
A 2" formed radius shall be provided along the body sides. The use of extruded radius will not be acceptable, No
Exceptions.
BODY SUBFRAME
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 4" x 1/4" aluminum tubes minimum, the same width as the chassis frame rails. Welded to this tubing shall be
cross members of 2" x 4" x 1/4" aluminum.
Smaller dimension, lighter gauge tubing or angle material subframe
shall not be accepted.
These cross members shall extend the full width of the body to support the compartments. Cross members 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 cross members shall be located on 16" centers, or 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.
BODY MOUNTING
For optimum chassis frame and body life, the body subframe shall be fastened to the chassis frame with a
minimum of six (6) 1/2" x 2" strap mounts, welded to the body subframe. The straps shall be bolted to the chassis
frame work utilizing 1/2" Grade 8 bolts.
10" REAR STEP BUMPER
The full width rear bumper shall be constructed from 2" x 2" x 1/4" aluminum tubing frame and covered with 3/16"
NFPA compliant aluminum tread plate. The bumper shall extend from the rear vertical body panel 10" and provide
a rear step with a minimum of 1/2" space at body for water drainage.
REAR TOW EYES
There shall be two (2) heavy duty rear mounted tow eyes securely attached to the chassis frame and mounted
above the rear bumper. The tow eyes shall be fabricated from 1" thick steel plate and shall have a black powder
coat finish.
GROUND LIGHTS
There shall be two (2) OnScene 9" Premium LED light(s) installed below bumper capable of providing illumination
at a minimum level of 2 fc (20 lx) on ground areas within 30 in. (800 mm) of the edge of the vehicle in areas
designed for personnel to climb onto or descend from the vehicle to the ground level.
Lighting shall be switchable but activated automatically when the vehicle park brake is set.