251-60-05 One Way Plow 12' w 6x6 hitch.docx

State of Illinois Department of Transportation Bureau of Business Services

Specifications and Questionnaire for a Heavy-Duty One-Way Trip Type Snowplow with 6x6 hitch adapter

July 2022

This specification and questionnaire covers a heavy-duty one-way, full trip type snowplow for use on 6x6 tandem axle trucks operated by the Department of Transportation.

It is the responsibility of each bidder to complete and return this questionnaire with the bid.

Bidders are advised to carefully read these specifications.

Proposed with this Bid:

Note: If the equipment proposed exceeds the minimums called for in the specification please do not mark NO. Mark Yes and explain with a short comment on how it exceeds.

Description of Construction:

The snowplow assembly shall be constructed using U.S. Domestic steel. A copy of Certification of Compliance shall be included with snowplows delivered to each location. The Certification shall verify the steel origin and tensile strength.

Complies: |_| Yes |_| No Welding shall conform to Certified AWS standards and practices. All seams and joints will be 100% welded. All pins and hardware with the exception of the cutting edge hardware shall be zinc plated.

Complies: |_| Yes |_| No Moldboard:

Length: Cutting edge length 12’-0” Moldboard is to have a minimum intake height 26” with a discharge height of approximately 57”.

Complies: |_| Yes |_| No The blade shall be minimum 5/8” thick x 8” high, using AASHTO standard punching. The bottom angle shall be punched to accept carbide and standard steel cutting edges.

Complies: |_| Yes |_| No Note: In addition to the standard AASHTO standard punching the lower moldboard angle shall be punched to accept Segmented type blades (i.e. Polar Flex) without the use of adapters. The moldboard angle shall have integrated, or welded steel block stops to support the segment blade outer mounting bracket. IDOT is aware the lower moldboard angle gusset locations may have to be altered to provide additional punching. Final design and drawings will be reviewed with IDOT.

Complies: |_| Yes |_| No A 10-gauge roll formed ASTM569 steel with a tensile strength of 55,000lbs to 70,000lbs, built-in integral shield shall be welded to the vertical ribs. Welds shall be full and continuous on both sides of the ribs, including all reinforcing and at the bottom angle.

Complies: |_| Yes |_| No The top of the moldboard shall be reinforced with a 2” x 3” x 3/8” structural angle. The top angle shall have pre-punched holes for attaching the rubber snow shield.

Discharge end of the moldboard is reinforced with a ½” flame cut rib welded to the moldboard sheet.

Complies: |_| Yes |_| No Vertical ribs:

Shall be 1/2" wide A36 steel, cut as a single piece. Splicing of pieces to form the rib is not acceptable. The base of the rib shall taper from 4” to approximately 2” at the upper reinforcement. The radius of the rib must be uninterrupted.

Complies: |_| Yes |_| No Minimum of 5 ribs per plow.

The four center ribs at the bottom angle shall be reinforced to provide a 1-1/2" bearing thickness for connection at the push frame lugs.

Complies: |_| Yes |_| No Steel reinforcing plates, 1/2” thick, shall be welded to each side of the rib, moldboard and the bottom angle. They shall extend above the center of the pin a minimum of 7”. The reinforcement plates shall be the full width of the rib with the top of the plate(s) cut at an angle to the bottom angle.

Complies: |_| Yes |_| No Landslide Plate:

The Landslide plate shall be from a minimum 3/8” plate.

Complies: |_| Yes |_| No There shall be a ½” nose guard attached to the landslide plate.

Complies: |_| Yes |_| No Horizontal Ribs:

Moldboard horizontal bracing is to be a minimum of (2) two 3” x 3” x ½” angle, boxed with ¼” bar at each compression spring attachment point.

Complies: |_| Yes |_| No The discharge end of moldboard there shall be a minimum of (2) two 3” x 3” x ½” horizontal braces tying the last two ribs together for additional strength.

Complies: |_| Yes |_| No The intake end shall have a ½” x 3” horizontal bar reinforcement.

Complies: |_| Yes |_| No

Moldboard bottom angle shall be 4" x 4" x 3/4" structural angle.

Moldboard bottom angle shall be reinforced every 12” between bolt holes and at each end of the bottom angle with structural angle iron ½” x 3” x 3” gussets on 12” centers. Bottom angle shall also be boxed between each rib and 100% welded.

Complies: |_| Yes |_| No

Moldboard radii shall include the deflector shield and a 12” deflector of rubber belting bolted through a continuous 3/16" x 1-1/2" flat with extended tabs at each bolt hole held by the top structural angle. The rubber deflector shall be a minimum 3/8” thick and 12” in width the full length of the moldboard.

Complies: |_| Yes |_| No

The moldboard and deflector shall be conducive to carrying large volumes of snow and affording protection from snow and spray carrying onto the windshield.

Complies: |_| Yes |_| No

The push tube shall be connected to the four reinforced vertical ribs using 1-1/4" pins and attached to a 4” x 4” x 3/8” tubular structural member.

The pins shall have large, thick flat heads and machined for roll pins. They shall be installed with a machine washer on the pinned end.

Complies: |_| Yes |_| No The moldboard shall include two orange LED lighted markers (6) mounted at the forward outermost corners of the snowplow. The markers shall be a minimum 30" to maximum 36” tall x 3/4" diameter. Wiring shall be continuous, outer fiber or plastic sheathing for protection and securely fastened to the moldboard. Allowing for full trip of the moldboard, wiring shall terminate at plow hitch with Weather pack type connection including female portion for installation on truck at later time.

Component:

Trip Mechanism:

Compression Spring Trip:

The compression spring trip shall consist of two (2) springs with mechanical slides inside, mounted on an angle iron frame (enclosed cannon types will not be considered).

Complies: |_| Yes |_| No Trip assembly shall be attached to the moldboard and pushframe with a ¾” A36 steel attaching point and to the pushframe with two 5/8” A36 steel attaching points, the trip assemblies shall be secured with four hardened stress proof pins.

Complies: |_| Yes |_| No The springs shall be constructed of AISI 5160H steel, and a bar diameter of 21/32”. The OD of the spring shall be approximately 5-5/16” with a compression rating of 319# per inch. There shall be a total of 14 coils in each spring. The spring shall have an approximate free height of 23-1/4”.

The angle of attack shall be easily adjustable by pins and at least three (3) adjustments.

Complies: |_| Yes |_| No The plow moldboard shall be capable of having adjustable attack angles from 9 degrees to 35 degrees.

Complies: |_| Yes |_| No

The Moldboard shall reset to upright position after passing over obstacle.

Complies: |_| Yes |_| No Note: This is the only trip mechanism acceptable to the Illinois Department of Transportation. Substitution will result in disqualification of the bid. Alternatives will be considered and evaluated outside of the time frame of this bid. Successful alternatives would be included in future bidding should they prove to be a safe and functional alternative.

One-Way Push Frame:

The push frame shall be manufactured of structural members of properly reinforced steel. The frame shall be connected to the four reinforced vertical ribs, using 1-1/4" pins and attached to a 4” x 4” x 3/8” tubular structural member.

Complies: |_| Yes |_| No The plow push frame horizontals from the front 4” push tube to the 1” x 5” push plate shall be (2) two 4” x 13 lb./ft. ship and car channel reinforced with the following: 4” x 4” x ¾” angle; and further gusseted with ½” plate.

The oscillating push-frame channel shall be a 7" MC Ship and Car channel weighing 22.7 lb./ft.

Complies: |_| Yes |_| No The ends of the oscillating channel shall be equipped with reinforced angles to prevent distortion of the oscillating plate and support the 1-1/2" diameter, Grade 8, oscillating bolt.

Complies: |_| Yes |_| No The oscillating channel shall have 1" thick push lugs to connect to truck push frame 30-1/2" center to center, drilled to accept 1-1/4" pins.

Complies: |_| Yes |_| No It shall be the responsibility of the manufacturer to ensure that the plow can be raised without contacting truck fenders or other interference.

Complies: |_| Yes |_| No The push frame, moldboard assembly shall be equipped with proof-coil level lift chain pick assembly to lift and carry the plow supplied to the push frame of an IDOT dump truck.

Complies: |_| Yes |_| No There are to be two jack support channels ½” x 8” x 18” A36 steel which have six ¾” holes for mounting various shoe assemblies.

Complies: |_| Yes |_| No The plow frame shall have chain retainers of ½” flame cut semi-circles with ½” high test chain with a working load limit of 9,200lbs.

Complies: |_| Yes |_| No Attached to the Push Frame immediately behind the pivot bolt, shall be a plate welded to either channel. A “top wind” style screw jack shall be mounted on a detachable collar and attached to the plate. The screw jack shall be removable without the use of tools. The jack shall be rated for 3,500 lbs. The jack, mounting and mounting location will be subject to review during pilot model inspection.

Complies: |_| Yes |_| No Plow Hitch Adapter for IDOT 6X6 Truck:

The snowplow shall include an adapter and lift cylinder to mount on an existing IDOT 6X6 plow hitch. The plow hitch and adapter are referenced visually below.

General:

Type - Custom heavy-duty "cheek-plate" type.

Plow use - Reversible, one-way, and V-type snowplows.

Push lug spacing - 30" center to center.

Connecting pin holes - 1 5/16" diameter holes.

Push lug height adjustment - Three sets of vertically spaced holes required in push frame and shall include one pair of tapered snowplow mounting pins with tether attached to push frame.

Complies: |_| Yes |_| No Construction and Design:

Constructed of heavy structural steel, including solid cheek-plates, designed to evenly transmit snowplow load to 6X6 plow hitch under continuous severe service. Cheek-plates to be a minimum ½” thickness, grade 50 material with a minimum ½” X 3” angle attached as a shear member. All components to be welded 100%. Grade 8 cap screws with top lock nuts and hardened flat washer on each side shall be used throughout.

Complies: |_| Yes |_| No Hydraulic Lift Ram:

Type - Single acting Ram size – minimum 3" diameter, nitride coated rod Stroke - 10" minimum Ram and packing - Gland type ram with chevron type packing and locking nut Hose - High-pressure type hydraulic hose Connection – cylinder port to be ORB Complies: |_| Yes |_| No Snowplow Lift Arm:

The snowplow lift arm shall be constructed of formed pieces of bar stock and shall provide triangular reinforcement to the lifting assembly, and reasonable lateral stability for a one-way, reversible, or “V” type snowplow.

Complies: |_| Yes |_| No The lift arm shall be manufactured from a minimum of two 1/2" x 3" pieces bar stock, welded to a 3/8” formed channel designed to receive a 3” tube. This assembly shall enable the arm to be adjustable in length.

Complies: |_| Yes |_| No A single piece of 1/4” plate shall be fashioned to match the shape of the top of the assembly and welded on for additional strength.

Complies: |_| Yes |_| No The rear of the triangle where the pivot hinge will attach to the push frame shall be approximately 20” wide.

Complies: |_| Yes |_| No A piece of 1” inside diameter, schedule 40 pipe shall be welded between the lift bars to provide a continuous bearing surface. Grease zerks shall be installed when needed.

Complies: |_| Yes |_| No A 1” diameter “stress-proof steel bar shall insert through this pipe and through the mounting ears on the push frame, being pinned on each end using large cotter keys. Welded bosses shall protect the upright angles from wear. The pipe shall contain a minimum of two (2) grease zerks for lubrication.

Complies: |_| Yes |_| No Adjustable center member of the lift arm assembly shall be approximately 32” long. Four (4) 1 1/16” holes shall be bored through on the centerline of the center member. The first shall be 2 1/2” from the end.

Complies: |_| Yes |_| No The underside of the tubing below this first hole shall be relieved approximately 4 3/4” to allow a lift pulley assembly to be installed and hang freely.

Complies: |_| Yes |_| No The second hole shall be 9 inches from the front end. The remaining holes shall follow the second on 4” centers.

Complies: |_| Yes |_| No The front of the adjustable center member shall have three banjo type chain eyes punched in 1/2” plate that will accept 1/2” chain welded to it.

Complies: |_| Yes |_| No The plate shall be formed so the side banjo eyes are at an approximate 45 degree swept back angle from the flat front banjo eye. Assembly shall be of sufficient design to support the weight of any plow.

Complies: |_| Yes |_| No Does Unit Proposed Meet or Exceed Above Specifications?

Items below are for visual reference only. Do not scale from pictures.

Standard 6X6 V-Plow Hitch Plow Hitch Adapter Required

Finish:

In view of environmental safety, environmental sensitivity and a corrosion resistant finished product, the paint process for all steel components shall be polyester powder coat, incorporating the encasement type process. The material used shall be environmentally friendly and shall consist of 75-95% recycle residue that emits”0” VOC’s into the environment.

Prior to assembly and powder coating, all exterior steel surfaces including the outer face of the steel moldboard, shall be shot blasted to a Grade 25 finish to properly clean the surface of all mill scale, oil, rust, or foreign material.

Complies: |_| Yes |_| No Following the media blast process, all steel components shall pass through a two-step process alkaline and phosphate wash with a clear water rinse immediately following both.

Complies: |_| Yes |_| No Prior to assembly of the plow structure the front and rear face of the moldboard shall be powder coated flat back.

Complies: |_| Yes |_| No Inspection:

The Department of Transportation reserves the right to inspect plows at a manufacturer's plant or have a pilot model shipped for inspection to one of the delivery destinations prior to delivery of the remaining order of the various destinations. When inspection is not made at manufacturer's location, equipment shall be shipped subject to inspection and acceptance at a chosen destination.

Complies: |_| Yes |_| No General:

One (1) copy of the operator's manual, parts list, and warranty shall be provided to each IDOT location ordering a plow.

Complies: |_| Yes |_| No Requirements Covering Items Detailed Above:

All equipment cataloged as standard or safety related shall be furnished and in place and shall be included in the purchase price of the unit. Any parts, standard tools, and/or accessories not specifically called for but required for proper operation shall be provided.

Complies: |_| Yes |_| No

The component parts of the unit shall be of proper size and design to safely withstand maximum stresses imposed by a capacity load, and the manufacturer's rated loads for chains and bearings shall not be exceeded when the unit is loaded with such loads.

Complies: |_| Yes |_| No Standard tool kits (if required) shall be supplied.

Full coverage warranty for a minimum 12 months shall be provided. Bidder shall attach copy of warranty with the bid. Since the continuous operation of this equipment is of the utmost importance and sometimes of an emergency nature, it is necessary that the successful bidder be in a position to render prompt parts and service.

Delivery:

The vendor shall notify the delivery location 24 hours prior to delivery. Delivery shall be made by truck to the locations shown on the order. The type of truck or trailer used for delivery shall be such that unloading can be accomplished by tractor-loader or truck wreckers. Trucks which cannot utilize this type of unloading system shall be responsible for unloading the truck. Product shall be protected to avoid damage during shipping and unloading.

Complies: |_| Yes |_| No This equipment is to be delivered in first-class operating condition with acceptance subject to Department of Transportation inspection and approval.

Bid Response:

Bidders should send copies of each of the following with their bid response.

a) Specification Questionnaire

b) Descriptive Literature

Specification No. 251-60-05

Specification No. 25-60-05

Specifications and Questionnaire for a One-Way Trip Type Snowplow

Pictures are for visual reference only. Bid per specification.

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