necessary to avoid interference with the
"run" longitudinally with either shiplap or
crane operations.
tongue-and-groove joints.
3.5.3.5
SIDE AND END RACKS.
3.5.3.6
BODY MOUNTING.
A full width front rack section, not less
Body shall be secured with U-bolts, twin
than three removable rack sections on
studs, or brackets.
Body shall be
each side, and two removable rack
mounted in full accordance with the
sections across the rear shall be provided.
chassis
and
body
manufacturer's
Each rack shall be equipped with a
recommended practice.
locking device to lock the rack to the
3.5.3.6.1 U-BOLTS OR TWIN STUDS.
body. Body hardware shall be attached to
When U-bolts or twin studs are used,
the rack slats with not less than 75 mm (3
there shall be not less than four U-bolts or
inches) total weld for each fastener or
twin studs per side each having 14 mm
bolted with not less than four bolts for
(0.563 inch) body diameter with 16 mm
each fastener. Upright posts shall be
(0.625 inch) minimum thread diameter.
steel sections. Rack slats shall be steel of
Tieplates shall be at least 13 mm (0.5
not less than 16 gauge with not less than
inch) thick and a slight deformation upon
3 reinforcing ribs. The width of individual
assembly is permissible. The vehicle
slats shall be manufacturer's standard
chassis frame shall be protected from
providing that total of slat widths is not
crushing by using spacer blocks at each
less than 60 percent of total rack height.
mounting point unless the mounting point
Not less than four slats per rack shall be
is located at a full depth frame
provided. Slat edges and end corners
crossmember. Blocks shall incorporate a
shall be rounded or enclosed to protect
keeper strap or groove for the mounting
cargo and personnel from sharp edges.
bolt, and shall be of a width and thickness
Slats shall be riveted, bolted or welded to
to assure retention. Two tieback straps
the inside (load side) of the upright posts,
shall be provided, one bolted to each side
with rivet or bolt heads against the slats.
of the rear portion of the body subframe,
When welded construction is used, not
to maintain body alignment on the vehicle
less than 4 welds shall be applied at each
chassis. Forward body mounting bolts
upright post and slat intersection. The
shall be located to the rear of the tapered
front rack section shall be capable of
portion of the breaker strips.
withstanding a horizontal static load equal
to one-half the payload capacity of the
3.5.3.6.2 BRACKETS.
vehicle without permanent distortion of the
When brackets are used, they shall be
rack section or its mounting. When a
bolted to the web of the chassis frame
hydraulic tailgate of the type that folds
rails. The body mounting brackets shall
against the rear side racks is furnished
provide means for drawing down the body
(option code HTG), the two removable
on the chassis rails, and provisions shall
rack sections across the rear of body are
be made to prevent lateral shifting of the
not required and each side rack section at
breaker strips. When additional holes are
the rear of body shall be provided with
required to secure the mounting brackets
draw-down type of fastening equipped
to the chassis frame rails, they must be
with a locking nut to secure the side racks
located within the area of the rail which is
in place. Rack height shall be a minimum
designated as being safe for drilling in
of 102 cm (40 inches). When a hydraulic
accordance
with
the
chassis
crane option code SAC, is furnished, the
manufacturer's body builders layouts.
front rack height may be reduced as
Federal Standard 807M
Page 25 of 65
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