Dump Bodies

Page | of 4 Rev.8/15/2025

SPECIFICATION
4-6 CUBIC YARD CROSS MEMBER-LESS DUMP BODY WITH CAB PROTECTOR
(Supply Only)

1.0 SCOPE:

2.0 GENERAL CONSTRUCTION:

The purpose of this specification is to describe the Department of Transportation's requirement for Extra Heavy Duty
contractor style 4 to 6 cubic yard cross member-less dump body, delivered F.O.B. to the Bureau of Mechanical
Services, 33 Smokey bear Blvd. Concord, N.H. 03301, mounted by State personnel. Units shall be built to mect or
exceed the following specifications.

Minimum 8-gauge abrasion resistant Hi- Tensile steel construction throughout having a minimum 50,000 PSI yield
strength except where material required is specifically noted later in this paragraph.

The underside of the body's structure shall not have any open areas that would allow material to
gather in and build up and to also help facilitate cleaning the body underneath.

Sides shall be reinforced with a formed top rail, formed rub rail and one (1 ea.) 8" min, full Jength sloped, formed
horizontal brace between the top rail and rub rail per side and include 2 ea. additional 3/8" steel triangular shaped tie
down plates per side with a 2" hole located between the top and middle horizontal box brace, located 15"s from the
front and 21-1/2" from the rear.

All body plates, including floor, shall be one piece (splicing not allowed).

All welds in the body are to be continuous. (Fully Welded)"

Body outside dimension shall not be less than 95-1/2" +/- 1/4" over wheels/tires.

Body inside dimensions shall be 9' long by 7' wide, with 24" sides, 4-cubic yard water level with 6-cubic yard ends.
Front sideboard pockets to be same height as cab shield and shall include a 13/16" hole located 46" on center up
from the body floor. Further reinforced with a 2" X 5" X 2-1/2" stainless steel plate with a 13/16" hole shall be
welded in place externally on the front of the pockets.

The outer sideboard plate at the bottom not to exceed 7" out from the headboard and at the top no more than 3-1/2"
The inside sideboard plate at the bottom not to exceed 7" out from the headboard and from the top of the side of the
body taper up to 16" to a width of no more than 3" from the headboard to the finished height.

Steel sideboard fillers of width to maximum 6-cubic yard capacity, one piece, without welding and strapped and
shipped on a separate pallet(s) not placed inside of dump body.

Fully welded in one-piece 1/4" AR400 steel floor to include a floor to side wall 2" radius or 2" X 2" bump formed
chamfer (splicing not allowed).

Full depth rear corner posts boxed to at least 5-1/2" X 12".

NO license plate, taillight or ICC light holes in rear apron or full depth rear corner posts.

One (1) ea. 9/16" hole on left rear corner post 6"s o/c from rear and 2" o/c from bottom edge to support a
salt light.

One (1) ea. 1-1/4" hole in both rear corner posts located 4-1/2" o/c from rear and 14" on center from bottom
edge of corner posts.

Rear apron, corner posts and front and rear sideboard pockets to be 304 stainless steel.

A 9/16" hole shall be located in the bottom of both rear corner posts 9"s from the rear and 2"s up from the
bottom and another 9/16" hole in the 'l' beams in line to support state supplied splash guard brackets.
Understructure long sills shall be full 'I' beam 10" X 25.4 'T' beams shall include a 1" hole located in the web of the
beam to facilitate a wiring harness from the inside of the trucks frame out to the rear corner posts. Any additional
brackets for tail gate locks or bracing located between the corner posts and the 'I' beams shall also have a 1" hole for
this wiring harness.

Provide tie down rails on both sides of the body and constructed from 5/8" RE-BAR, welded at each end and
supported on 1.25" risers in five (5) places equally spaced and located to the outside edge of the sloping running
boards.

Front head section shall be reinforced with minimum of two horizontal pleated (formed) 'V' sections equally spaced
(horizontal braces welded in place in front head section are not acceptable).

Tailgate to be full box construction, double acting, reinforced with vertical and horizontal box bracing forming at
least 6 panels.

Heavy duty offset hinges to be flame cut 1-1/2" thick and allow tailgate to be capable of swinging open thru 180-
degree arc.

Page 2 of 4 Rev.8/15/2025

Continued
SPECIFICATION
4-6 CUBIC YARD CROSS MEMBER-LESS DUMP BODY WITH CAB PROTECTOR
(Supply Only)
e Lower tailgate locks to be made of steel (casted materials are not acceptable).
(C) Tailgate safety chains shall be 3/8" grade #8 alloy welded directly to tailgate.
e Tailgate must be installed.
Furnish three (3) sand doors on tailgate with no reinforcement on inside of door. Do NOT slot upper edges of

tailgate above sand doors. The three sand doors sills shall be installed and even with the top of the dump body floor
when the gate is in the closed position. Two (2) ea. Three-foot (3') lever with 2:1 leverage for opening sand doors,
e Chain and hook shall be provided on top of tailgate for holding doors open.
Tailgate operating device to be AIR actuated, positive locking and shall pin in place with mounting provisions
welded in place between frame rails at rear of body.
Air cylinder shall be in the retracted position when tailgate is locked.
A'D' ring shall be installed on the inside of the tailgate to provide a single lift point for removal and installation.
Misc. air tail gate components to be boxed & shipped separately not inside a dump body.
Provide 1/4" thick external anchor points 4" tall, 3-1/2" ID wide and 2-1/2" ID deep with 2" slot on rear body corners
as near the top as possible for general use of the tailgate and an anchor point midway down or lower 1/3" on each
side for spreading control.
e Box type anchor point as shown in sketch is the only type acceptable.
e Keyhole or banjo type slots are not acceptable.

3.0 HOIST:

e Heavy Duty Class 50 full length underbody hoist with SA cylinder shall be of the same brand as the body.

Sub frame shall not extend beyond front of dump body and shail not require any modifications to install.

e Cylinder shall have SAE-O-Ring ports and be mounted so they face downward with a hard chrome plated piston rod.

* Body shall be furnished with dual, flat bar style, reinforced safety legs (pipe is not acceptable).

(C) All piston, body pivot points and body props shall have grease fitting's readily accessible when body is up.

Rear hinges shall be platform type, double shear design at each side of the underbody with minimum 3/4" outer
hinge plates and main hinge ears to be flame cut min 2-1/2" thick plate. The top of the main sub frame hinges or
hinge plates shall be the same elevation as the top of sub frame.

e Hinge plates and main hinges to hold a bore tolerance of 1.953 and shall have grease fittings accessible when body is
down.

Hinge pin to be min 1-7/8" cold rolled. All pins or bushings in sub frame components to have .125 deep and wide
annular grease tracks.

e Sub frames to be shipped separately on a pallet and not inside of a dump body.

e The Power takeoff, pump, shaft, and control lever and linkage is NOT a part of this specification.

4.0 Finish:

(C) To ensure proper adhesion and a durable finish of final coating, body manufacturer shall first clean ALL surfaces of
oils, greases and scale by COMMERCIAL ABRASIVE BLAST CLEANING (SSPC-SP-6), then apply TWO (2)
coats of Rust-Oleum Heavy Duty Gray Primer #HS938] OR TWO (2) coats of Dupont industrial coatings 2.1PR
high solids epoxy mastic primer (formally If-71125P) (NO substitutes) to a minimum thickness of FIVE (5) Mils.

e Hoist finish color-Black.

e SDS's: Manufacturer shall supply two (2) complete sets of Safety Data Sheets for all construction and coating
materials used in both the construction and finishing of all equipment, furnished before production and upon delivery
of any components.

If the State chooses to have the vendor apply finish paint to the dump body:
e Body Color-Omaha Orange
e Vendor must provide Mechanical Services with a paint sample for review and approval prior to production.

Page 3 of 4 Rev.8/15/2025

Continued

SPECIFICATION
4-6 CUBIC YARD CROSS MEMBER-LESS DUMP BODY WITH CAB PROTECTOR
(Supply Only)

5.0 CAB PROTECTOR (Unless noted to delete):

e
degrees

Minimum 32" cab protector supplied per attached drawing.

The cab protector shall be the same width as the outside dimension of the body.

Four holes shall be provided to accommodate wiring for the lighting system at a diameter of /" inch and located on
the front and sides of the bodies cab protector. Two holes shall be located in the front of the cab protector at 2"
inches down from the top on center and 13-3/4" inches in from the sides on center. The other two holes will be
located on the sides of the cab protector at the top corner at 2-5/8" inches down from the top of the cab protector on
center and 3-3/8" inches in from the front of the cab protector on center.

To facilitate the installation of a wiring harness for an automatic roll cover, a 1" I.D. conduit in the shape of a 95 degrees
degree 'L' shall be attached to the left front of the head sheet so water can drain, extending from lower edge of the
body at the inside of the L.H. longitudinal beam, over to the L.H. side of the dump body and up through the cab
protector at a minimum Y%" and a maximum of 1" inch without modifications to the cab shield brace.

Cab protector, unless otherwise noted, shall be shipped from the manufacturer fully attached to the body.

Cab shield height to be determined by the State.

6.0 MOUNT FOR VIBRATOR

o Located under the body and welded to the AR floor
o Front of channel mounted flush with front of body, centered between longitudinal main beams running
parallel with the longitudinal main beams
o Six-inch (6") channel 42.25 inches long
= Weld three inches (3") every three inches (3") both sides. Start one half inch (1/2") in from both
sides
= Two 7/8"Hame holes drilled in web to align with plate holes
= Two tabs to be welded onto channel in location of plate

e %inchx 1 flat bar, 1% inch long with 7/16-inch hole drilled %4" from the bottom on center

o %"Xx4"x11' plate
= Weld 3" on both 4" sides leaving %" from end on both sides- welded to inside of channel
- Two (2) holes shall be drilled and tapped
e First hole is ten inches (10") from the front
e Second hole is 18.5" inches from the front
e Holes to be 8 % inches on center from each other
e Both holes drilled in center of plate

e 21/32" tap for /"- 10 bolt

Page 4 of 4 Rev.8/15/2025
Continued

SPECIFICATION
4-6 CUBIC YARD CROSS MEMBER-LESS DUMP BODY WITH CAB PROTECTOR
(Supply Only)

7.0 ACCEPTABLE BRANDS:
* When built to the above specification, the following makes and models are the only ones acceptable:

Everest MSL Body with UB 1821DA Hoist,
Henderson MKE with UB817 Hoist,
Crysteel Select with RC6S0 Hoist.

Air Flo PMX10 with Model PMX-60 Hoist

e Bidders shall submit a full description, detail drawings & plans of their proposed body and hoist to the DOT Bureau
of Mechanical Services for review and approval within five (5) days of notice of apparent low bidder by DAS
Bureau of Purchase and Property.

A full description, detail drawings and plans may be dropped off, mailed or E-mailed to the following address

NH DOT - Bureau of Mechanical Services.

P.O. Box 483, 226 Sheep Davis Road, 33 Smokey bear Blvd
Concord NH 03301

Between 7:30 AM & 3:00 PM, M-F

E-Mail - Bureau38@dot.nh.gov and Nathan.J.Harrison@dot.nh.gov

e Sample of overall configuration may be seen at Mechanical Services, 33 Smokey Bear Boulevard, Concord, NH.
Illustration of dump body. Anchor Points and sand doors

SEE DETAIL B

4
~
FRONT HEAD SECTION SHALL BE
NS Z REINFORCED WITH MINIMUM OF
> TWO HORIZONTAL PLEATED "V"

SECTIONS EQUALLY SPACED.

1" {.D. CONDUIT FOR WIRING

THREE SAND DOORS ON TAILGATE WITH NO REINFORCEMENT ON INSIDE OF DOOR

"4g" THICK EXTERNAL ANCHOR POINTS
4" TALL, 37%" 1.0. WIDE ANDO

27%" DEEP WITH 2" SLOT. KEYHOLE
OR BANJO TYPE SLOTS NOT ACCEPTABLE

2:1 LEVERAGE FOR OPENING SAND DOORS

NOTES:

1. MINIMUM 8 GAUGE ABRASION RESISTANT STEEL CONSTRUCTION
THROUGHOUT HAVING MINIMUM 50,000 PSI YIELD STRENGTH
EXCEPT WHERE MATERIAL IS SPECIFICALLY NOTED.

2. FLOOR TO SIDEWALL TO BE FULLY WELDED ONE PIECE 'vq" AR400 STEEL
FLOOR.

3. REAR APRON. CORNER POSTS AND FRONT AND REAR SIDEBOARDS POCKETS

TO BE 304 STAINLESS STEEL.

ALL BODY PLATES SHALL BE ONE PIECE (NO SPLICING)

IN BODY ARE TO BE CONTINUOUS.

STATE OF NEW HAMPSHIRE

ALL WELDS
DEPARTMENT OF TRANSPORTATION (C) GUREAU OF MECHANICAL SERVICES|

4 - 6 CUBIC YARD CROSS
MEMBER-LESS DUMP BODY

degrees

SCALE IN FEET

SPEC, PLANIS ONLY FOR INFORMA TIONAL
"IRPOSES. WRITTEN SPEC LS THE ULTIMATE
AUTHORITF.

'ear Teo OATE
14-20-12

INSITE DIMENSIONS 9 degrees LONG X_7' WIDE
4-YArev R LEVEL WITH o-YA D 2" RADIUS OR 2" X 2 " BUMP FORMED CHAMFER

(SPLICING NOT ALLOWED)

OETAIL D

TLE DOWN RAILS CONSTRUCTED FROM
me" REBAR ON i'v4" RISERS

32" CAB PROTECTOR
CAB PROTECTOR HEIGHT TO BE
DETERMINED BY STATE AGENCY

IM_E
BRACE BETWEEN TOP RAIL AND RUB RAIL

3yq" HOLE FOR
LIGHTING SYSTEM WIRING

VERTICAL AND HORIZONTAL BOX BRACING MUST BE
CAPABLE OF SWINGING OPEN THROUGH 180 DEGREE ARC

TaN

N SEE DETAIL A&C

STATE OF NEW HAMPSHIRE

DEPARTMENT GF TRANSPORTATION (C) GUREAU OF MECHANICAL SERVICES|

---- 4 161 CUBIC WARD \CROSS)
SPEG HAN IS ONLY OR INFORMATIONAL 'SCALE. IN FEET MEMBER-LESS DUMP BODY
PURPOSES, WRITTEN SPEC. IS THE ULTIMATE
Ure: 'DRAFTEO OATE Rev istON OATE "GREET WO. TOTAL SHEETS

Ti=20-12 11-03-16

1" HOLE LOCATED IN WEB OF I-BEAM AS CLOSE TO
REAR APRON AS POSSIBLE AND LOWER FLANGE AS POSSIBLE

STATE OF NEW HAMPSHIRE

DEPARTMENT OF TRANSPORTATION (C) QUREAU OF MECHANICAL SERVICES|

- 4 - 6 CUBIC YARD CROSS

SPEC, PLAN IS ONLY FOR INFORMATIONAL SCALE IN FEET MEMBER-LESS DUMP BODY
SES: WRITTEN.

SPECS THE ULTIMA TE
AUTHORITY. 'Dear Teo OATE Tevisior OATeSneET OTT, SveETS

11-20-12 11-03-16

B

ip" PLATE
Tyg" HOLE ON CENTER

46" FROM FLOOR OF DUMP BODY
TO CENTER OF HOLE

: i a \

STATE OF NEW HAMPSHIRE

DEPARTWENT OF TRANSPORTATION (C) BUREAU OF MECHANICAL SERVICES|

4 - 6 CUBIC YARD CROSS
MEMBER-LESS DUMP BODY

'ear Te DATE REVIsTOW ATE SWECT WO. TOTAL SHEETS

SCALE IN FEET
o Pg

SPEC, PLAN IS ONLY FOR INFORMATIONAL
PURPOSES, WRITTEN SPEC IS THE ULTIMATE
AUTHORITY, SCALE IN FEET

SPEC. PLAN IS ONL FOR INFORMATIONAL
IRPOSES, WRITTEN SPEC 1S THE ULTIMATE
AUTHORITY.

HOLE LOCATED ON LEFT SIDE ONLY

STATE OF NEW HAMPSHIRE

SEFIRTIENT GF-TRANGPORTATION 9 BURER OF MECHANICAL SERVICES
i 4 4.- 6 CUBIC YARD CROSS
SCALE IN FEET MEMBER-LESS DUMP BODY

'Dear Teo OTe FEVIsTON OATE SWEET WO. "YOTAL_ SEES
11-20-12 12-15-15 3 z

SCALE IN FEET

INSTALL TIE DOWN PLATES IN BETWEEN

THE TWO HORIZONTAL BRACES \

A

SCR SN ONLY FOR INFORMA

SES! WRITTEN SPEC: LS THE: EDN TE

SOLO ig

STATE OF NEW HAMPSHIRE

SCALE IN FEET

4 - 6 CUBIC YARD CROSS
MEMBER-LESS DUMP BODY

Omar Te OATe
11-20-12

Revision OaTe SHEET NOL
11-05-16

Tora sveets