252-60-25 Plow 36In Moldboard Poly.docx

State of Illinois Department of Transportation Bureau of Business Services

Specifications and Questionnaire for a 36” High, Polymer, Moldboard Trip Type, Reversible, Snowplow

July 2022

This specification and questionnaire covers a polymer, high-moldboard type, reversible, trip blade snowplow for use on single and 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: Single numbers in italics and parenthesis correspond to the numbers on the attached photographs to provide a common definition of terms and parts.

Do not scale from photographs.

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 (1):

Note: Length to be called for in the Bid-10’0”, 11’0”.

Height at intake and discharge Minimum - 36" Maximum 36”. Measured from the bottom of the cutting edge to the highest inside point of the moldboard.

Length of cutting edge as specified by plow length in Bid. The blade shall be minimum 1/2” thick x 8” high, (standard highway) with a 1 ½” gauge line punch pattern using AASHTO standard punching. The bottom angle shall be punched to accept carbide and standard steel cutting edges. Bolts shall be countersunk in 1-1/16” diameter x 800 holes with 11/16” square punching for 5/8” bolts.

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 The polymer covering the face of the moldboard shall be 3/8" thick and attached at the bottom by channel and bolted through the top angle utilizing ½” carriage bolts and Spin-Loc nuts. Poly must be allowed to expand and contract while secured to the plow.

The orange polymer shall be high molecular, with an ultraviolet inhibitor with a minimum 100,000 PSI tensile modulus, 80.000 PSI flexural strength, 2,800 PSI compressive strength and 3,000 PSI tensile strength The polymer shall contain no recycled material.

The polymer must be one piece. No splices will be allowed.

Complies: |_| Yes |_| No A 10-gauge smooth rolled steel, single piece moldboard, shall be welded to the vertical ribs behind the polymer. Welds shall be full and continuous on both sides of the ribs, 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 (3). The top angle shall have pre-punched holes for attaching the rubber snow shield.

Vertical ribs (2): Shall be 1/2" wide, cut as a single piece. The base of the rib shall be e. plasma cut and tapered, with the top end welded to a 2” x 3” x 3/8” moldboard top angle. Splicing of pieces is not acceptable. The radius of the rib must be uninterrupted.

Complies: |_| Yes |_| No Minimum of 8 ribs, ½” x 4” curved vertical ribs, per plow.

The six center ribs at the bottom angle shall be reinforced (7) to provide a 1 1/2" 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 The remaining ribs shall be placed as follows: One at each outer edge of the moldboard and the remaining ribs equally spaced between the end of the moldboard and the outer push frame lug. The left and right outer ribs shall have two integral .375 x .750 slotted holes for marker installation.

Complies: |_| Yes |_| No Horizontal Ribs (4): Two 3” x 3” x ¼” structural angles shall be evenly placed horizontally between ribs 1 – 2 – 3 – 6 – 7 & 8. Two 3” x 3” x ¼” structural angles shall be evenly spaced horizontally between ribs 4 & 5. Two 3” x 3” x ½” structural angles that are boxed with ¼” plate, shall be evenly spaced horizontally and vertically between ribs 3 & 4 and 5 & 6. These ½” boxed angles shall anchor the ¾” plate top spring mounts.

Complies: |_| Yes |_| No Moldboard bottom angle (13) shall be 4" x 4" x 3/4" structural angle.

Moldboard bottom angle shall be reinforced (12) with gussets between the cutting edge mount holes with every 12” between bolt holes and at each end of the bottom angle with ½” stock welded in place 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 moldboard, including integral shield, when the cutting edge is at a 70 degree attack angle, which will constitute the moldboard face extending to approximately 22” forward of the cutting edge at a consistent radius. Moldboard height shall be 36” with an 8” cutting edge and full moldboard trip Both upper leading ends shall include mailbox trims of 12” x 12” to allow the plow when fully angled in either direction to have its leading end on the discharge not to protrude past the end of the cutting edge.

The push tube shall connect to the center six (6) ribs The 1-1/4” attachment pins shall be machined from 1045 material, plated and retained with a machine washer and roll pin.

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:

Compression Spring Trip:

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

Complies: |_| Yes |_| No The springs shall be constructed of AISI 5160H steel. The O.D. of the spring 5-5/16” with a solid capacity of 4234# and a compression rate of 319# per inch. There shall be a total of 14 coils in each spring. Each spring shall be approximately 6” in outer diameter, 23 ½” long of ¾” wires. The spring assembly shall attach to the plow moldboard by means of (2) steel ears which will allow for three (3) different settings. Ears are welded to 4” x 3” x 3/8” horizontal angles welded between vertical ribs.

The plow shall remain level when lifted and reversed.

Complies: |_| Yes |_| No Moldboard shall reset after passing over obstacle.

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

Complies: |_| Yes |_| No Note: This is the only trip mechanism acceptable to the Illinois Department of Transportation. Substitutions will result in disqualification of the bid. Alternatives will be considered outside of this bid. Any successful alternatives may be included in future specifications should they prove to be a safe and functional alternative.

Push Frame:

Shall be connected to the six reinforced vertical ribs, using 1 1/4" pivot pins (8) 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 Push frame: Shall be manufactured of structural members of properly reinforced steel. Semi-circle shall be formed from 3-1/2” x 3-1/2” x ½” structural angle reinforced with additional ½” angles and plate. The “A” frame is to be constructed with 4” x 13.8 lb. ship and car channel, 5/8” plate, 1” plate and reinforced with ½” plate. The “A” shall pivot on a captured 1-1/4” stress proof pin. The pin will rotate within a 2-1/4” OD x 3-3/4” long tube that is relubable and has an internal grease swirl. The frame shall be connected to the six 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 push frame shall hydraulically adjust the plowing angle of the moldboard 35o right to 35o left and hold the plowing position without the use of a mechanical device.

Reversing mechanism:

The unit shall consist of two double-acting, hydraulic cylinders (10) and constructed so that the reversing cylinders are mounted above the push frame in such a manner as to not interfere with the complete tripping of the moldboard. Cylinders shall attach to the push frame – “A” frame assembly with brackets made of 5/8” A572 steel. The 1” stress proof cylinder pins and or cylinders, shall be easily removed or replaced without disassembling the plow.

Complies: |_| Yes |_| No

The cylinders shall incorporate a 3" diameter piston and 2" diameter nitride plated rod.

The cylinder piston shall use a molded glass filled nylon wear ring with a capped T-seal and nitrate static seal O-ring . The threaded head gland shall have polypak type B seal along with a Nitrite back-up ring, static seal nitrite O-ring, and a D520 Hythane rod wiper. The ports shall have .750-16 ORB work ports.

The circle A-frame stops (11) shall be located to allow the 35 right and left angle without fully extending or contracting the hydraulic cylinders.

Complies: |_| Yes |_| No Stop blocks shall be positioned on the circle frame to prevent hydraulic over-stressing of the reversing cylinders. To prevent possible “pinching” of hydraulic hoses, stop blocks shall not overhang the circle frame width. Heavy duty, hard rubber stops shall be placed on the bottom of the front end of the push frame to prevent the tripped moldboard or blade from contacting the push frame.

Complies: |_| Yes |_| No Hydraulic hoses shall be ½” and rated for a 3,000 lbs. working pressure rating. The whip hoses provided shall be 40” minimum in length. All hoses provided to connect to the truck shall be located on the driver’s side of the push frame of the plow. Note: Docking plate for multi-coupler shall be included for hose storage.

Hoses shall be properly sheathed at sharp corners and routed to avoid pinching and cutting.

Complies: |_| Yes |_| No The oscillating A-frame channel shall be a 7" MC Ship and Car channel weighing 22.7 lb/ft.

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.

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.

Component:

Finish:

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 The metal shall be properly treated after shot blasting to provide a proper surface for application of the powder coat finish.

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 The front or face (polymer surface) of the plow shall be manufacturer's standard orange, not painted.

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 to the various destinations. When inspection is not made at manufacturer's location, equipment shall be shipped subject to inspection and acceptance at destination.

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

One (1) copy of the operator's manual shall be included at delivery of each unit.

Complies: |_| Yes |_| No Three (3) copies of all operator's manuals, parts lists, and warranty information shall be provided at time of delivery to each district receiving one or more units.

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, 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.

Complies: |_| Yes |_| No |_| Not required 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.

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 loaded beyond this capability will be rejected, and it will be the bidder's responsibility to arrange the 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.

Complies: |_| Yes |_| No Time of delivery may be an important factor in determining the award.

Bid Response:

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

a) Specification Questionnaire

b) Descriptive Literature

Specification No. 252-60-25

Specification No. 252-60-25

Specifications and Questionnaire for a 36” High, Polymer, Moldboard Trip Type, Reversible, Snowplow image2.png image3.png image4.png image1.png