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ATTACHMENT 1 –
Specification # C10-0032.22 Request for Proposal (RFP) No. 220000002426 Under Bridge Inspection Unit, 32 Foot
All items specified and furnished by the Contractor shall be new, shall be of the latest model in current production, and shall include all standard features normally offered with these models.
Referenced make/model is Aspen Aerials/Aspen B-32 Bridge Inspection Unit. Bidder may offer alternates or exceptions to the referenced make/model. Product literature for the make/model offered must be provided with bid response.
Bidder’s Response: Indicate offered 32-Ft Under Bridge Inspection Unit:
Make:
Model:
Bidder must respond to each section with YES or NO (or enter additional information as requested). If NO is indicated, provide explanation and available option.
Bidder’s Response
| 1.1 |
| All holes in cab and chassis frame rails shall be drilled or punched. |
| 1.2 |
| There shall be no flame cutting or welding on the frame side rails |
| 1.3 |
| Body, frame and painted components shall have all bare metal surfaces pre-cleaned and prepped prior to applying a compatible two part epoxy primer |
| 1.4 |
| Frame, body, and all under cab painted components will be painted black with PPG PSX700, with the primer coat being Amercoat 240 or equal |
| 1.5 |
| The complete paint film, to include primer and finish coat, shall have a minimum thickness of 2.5 mils |
| 1.6 |
| Cab to end frame length on all body installations shall be the same length as the body being mounted, plus the length of any setback |
| 1.7 |
| All wires passing through holes in metal or non-metal wearing surfaces, which could cause wear of the insulation, shall be adequately protected by rubber or plastic grommets, and/or non-metal conduit. Ends of all wires shall be adequately anchored to prevent loosening. All wiring shall be properly secured to the truck by proper wiring hangers. |
| 1.8 |
| All electrical connections shall be soldered and enclosed in heat shrink or in water tight junction blocks |
| 1.9 |
| Scotch locks and wire nuts are not acceptable |
| 1.10 |
| Any non-factory wiring harness shall be made with weather pack connectors |
| 1.11 |
| All hydraulic/fuel/water lines shall be adequately protected and shall be properly secured to the truck by proper hangers |
| 2.0 |
| Pickup/Delivery of Chassis: |
| 2.1 |
| New chassis to be picked up at the TSMO Fleet Maintenance Garage at 2522 West Main St. Lansing, MI 48917 |
| 2.2 |
| Completed unit to be delivered to TSMO Fleet Maintenance Garage at 2522 West Main St. Lansing, MI 48917 |
| 3.0 |
| Cab & Chassis - Supplied by MDOT. Chassis specifications are indicative only, final chassis specs to be verified with the Contractor before the chassis is ordered. |
| 3.1 |
| Chassis is a 2024 Freightliner, 114SD with an Extended Cab |
| 3.2 |
| GVWR of chassis is 36,000 lbs. |
| 3.5 |
| 38 inch axle to frame |
| 4.1 |
| The deck shall be constructed of plate steel |
| 4.2 |
| The deck shall be welded to the heavy-duty structural steel crossmembers and longitudinal with side and end rails |
| 4.3 |
| Deck surface shall be finished with non-skid paint |
| 4.4 |
| The body shall have two (2) locations with access steps installed on the left side and the rear of the deck, Handrails shall also be provided to provide a 3-point access system |
| 4.5 |
| The steps shall be constructed with heavy duty material |
| 4.6 |
| First step shall be 15" to 18" from ground |
| 4.7 |
| Two (2) under deck toolboxes shall be installed, one (1) on the right side which shall be 48" x 24" x 24" and one (1) on the left side which shall be 36" x 24" x 24" |
| 4.8 |
| Boxes shall be constructed of aluminum |
| 4.9 |
| Doors shall be downward opening with cable stops and keyed alike locks |
| 4.10 |
| The unit shall have two (2) anti-sail, no advertising mud flaps, installed in back of rear tandem wheels |
| 4.11 |
| The mud flaps shall have road clearance of ten (10) inches when truck is empty |
| 5.0 |
| Under Bridge Inspection Unit: |
| 5.1 |
| Overall stored length: 38', 0" (maximum) |
| 5.2 |
| Overall stored height: 10', 10" (maximum) |
| 5.3 |
| Overall stored width: 102" (maximum). |
| 5.4 |
| All components of the aerial device shall be stored inside the length and width of the flatbed body |
| 5.5 |
| When in operation, only 102” of the traffic lane shall be occupied. |
The under bridge inspection aerial device assembly shall consist of the following minimum components:
| 6.0 |
| Pedestal and Subframe: |
| 6.1 |
| Both the pedestal and subframe shall be constructed of high strength steel and shall have sufficient strength to withstand all torsional stress imposed by the boom assemblies with the maximum rated load in the work platform |
| 6.2 |
| The pedestal shall be mounted behind the truck cab. |
| 6.3 |
| The pedestal shall be welded to a tubular or beam type subframe which shall extend the full length of the chassis frame |
| 6.4 |
| The subframe shall be fastened to the chassis frame with mounting plates and grade 8 bolts |
| 7.0 |
| Two (2) Hydraulic Rotation Turntables: |
a. The main turntable shall be mounted on top of the pedestal and hinged to the main boom (No. 1)
b. It shall rotate the booms off of both sides of the vehicle
a. The second turntable shall be mounted at the end of Boom No. 1 and hinged to Boom No. 2
b. It shall rotate a minimum of 180 degrees when all booms are deployed
c. The turntable shall be controlled hydraulically by a cylinder so as to eliminate leveling arms
a. Each turret shall rotate on a heavy-duty shear ball type bearing protected against dirt and moisture, and provided with means for pressure lubrication
a. Rotation shall be powered by a reversible hydraulic orbital motor driving a gear box, which shall prevent free wheeling in case of hydraulic failure
a. A sliding counterweight shall be attached in the rear, under the deck and slide on the opposite side, of boom rotation and stay within the width of unit when the booms are deployed
a. The under bridge inspection aerial device shall be equipped with three articulating, hydraulically operated booms
b. Telescopic boom sections shall be equipped with high wear capacity nylon support rollers or pads
c. There shall be no exposed hose reels
a. The main boom, shall be hinged to the mainframe pedestal turntable
b. Sidewalks width clearance shall be 7’-6” minimum
c. Main boom shall have up to 13' 0" clearance from ground
d. Boom will have a movement range of +40 to -24 degrees
a. The second boom shall be attached to the end of Boom No. 1 and provide vertical clearance of 16’ minimum
b. It shall be capable of articulating to a horizontal position, perpendicular from the bridge so that the inspection bucket can access the bridge fascia
c. Boom will have a movement range of +0 to -105 degrees
a. The third boom shall be telescopic and hinged to the end of Boom No. 2.
b. The third boom must be capable of reaching a minimum of 31’ 6" horizontally under the bridge when boom No. 2 is in a vertical (90 degree) position
c. Boom will have a movement range of +90 to -60 degrees
a. Booms shall have full hydraulic powered cylinders
b. All cylinders shall be pilot operated, double-acting with integral safety holding valve
c. All boom lift cylinder shafts shall be of chrome rods to resist corrosion and shall be able to withstand a 500-hour salt spray test
| 8.5 |
| Cylinder Swivel Pins: |
a. Cylinder shall be attached to the booms with high strength steel pins
b. Cylinder pins may be secured with either keeper bolts in the head of the pin or locking nuts
c. All cylinders to have replaceable bushings
a. One (1), two (2) person aluminum platform with a minimum 600 lb. capacity shall be hinged at the end of the third boom and shall automatically be kept level at all times by a hydraulic leveling system
b. Platform shall be capable of having a 7' extension reach
c. Platform dimensions shall be a minimum of 38"x54"x42" deep
d. An access gate shall be provided
| 8.7 |
| Safety Harnesses & Lanyards: |
a. Two (2) safety harnesses and lanyards shall be furnished
b. Attachments for lanyards shall be installed in the platform
a. The primary source of power for operation of the Under bridge Inspection aerial device hydraulic systems shall be provided by a transmission mounted PTO-mounted hydraulic pump
b. It shall have the capacity to perform more than one unit movement simultaneously
c. Unit shall be equipped with a Diesel auxiliary engine, with a 10KW generator with a hydraulic pump for backup power for emergency boom operation, Fuel to be feed from the Chassis fuel tank
a. All movements of the under bridge inspection aerial device shall be made by hydraulic pressure
b. All hydraulic cylinders shall be double acting with direct coupled safety check valves as protection, in case of pump or hose failure
c. Reservoir shall be of steel welded construction with 25 gallon (minimum) storage capacity
d. Reservoir shall have baffles and exterior oil sight level gauge
e. Hydraulic oil shall be filtered through a return line 10 micron filter with replaceable element
f. A 100 mesh strainer shall be located on the suction side of the reservoir
g. All filters shall be accessible for easy element replacement
h. Shut-off valve shall be provided and installed to allow for replacing/cleaning of hydraulic filters and strainers
i. Hydraulic fluid transmission lines shall be flexible hoses, wired braid reinforced and shall have a weather and abrasion resistant covering
j. Bursting pressure rating shall be at least 200% of the system operating pressure
| 9.0 |
| Controls and Safety System: |
a. Two (2) complete sets of wireless controls shall be provided:
b. One (1) set of wireless controls for use at the platform
c. One (1) set of wireless controls at the truck
d. Unit shall have one set of hydraulic controls at the pedestal
e. In case of electrical failure, the hydraulic valve at the pedestal shall be capable of overriding the remote controls
f. These functions shall also have proportional flow control and precise metering capability to provide smooth operation of the unit in all working positions and to ensure the safety of operating personnel at all times
g. Controls shall be arranged to allow for each individual movement separately or in any combination desired
h. Controls shall be located to facilitate maintenance access
i. Manual overrides shall be provided for all functions
a. Unit shall have a graphic interface in the cab
b. Graphic interface shall have a color display
c. Display will depict the unit operation and the performance of induvial functions
d. Interface shall also monitor the unit's parameters and hydraulics for simplified trouble shooting of the unit
| 10.1 |
| Interlock to prevent operation of under bridge inspection aerial device if suspension lockouts and counterweight are not engaged |
| 10.2 |
| Limit switches to prevent rotation or articulation of booms into unstable positions |
| 10.3 |
| Relief valve and switches to prevent overloading hydraulic system with excessive pressures |
| 10.4 |
| Emergency kill switch of truck engine shall be located at the pedestal and basket |
| 10.5 |
| Automatic audible alarm to signal excessive slope conditions |
| 11.1 |
| The frame shall be equipped with two (2) hydraulically operated suspension lockouts at the front axle, controlled from the pedestal station |
| 11.2 |
| The frame shall be equipped with two (2) hydraulically operated suspension lockouts, at the rear axle, controlled from the pedestal station |
| 11.3 |
| The lockout system shall include indicator lights to alert the driver that the lockouts are engaged or disengaged |
| 11.4 |
| Indicator lights shall be installed in the cab |
| 11.5 |
| An interlock shall be installed to prevent operation of the under bridge inspection aerial device when the suspension lockout system is disengaged |
| 11.6 |
| A manual override (to allow booms to be stowed in case of system malfunction) shall be installed at the pedestal |
| 11.7 |
| When lockouts are engaged, the truck shall be capable of withstanding all tipping forces generated by booms in all positions in both stationary and moving applications |
| 11.8 |
| OUTRIGGERS ARE UNACCEPTABLE. |
| 12.0 |
| Communication System: |
| 12.1 |
| A wired intercommunication system between personnel in the truck cab, the pedestal control station, and the work platform shall be provided and installed |
| 12.2 |
| The system shall consist of fully transistorized amplifier (powered by the truck batteries) with on/off switch, volume controls and an integral press-to-talk switch mounted in the truck cab convenient to the driver, and at the pedestal |
| 12.3 |
| The basket speaker shall be activated in a hands-free mode |
| 13.2 |
| An air line with a minimum 100 psi working pressure rating shall be provided to the work bucket |
| 13.3 |
| The air line shall be routed along the truck frame rail beginning at the left rear of the platform and be routed onto the booms in protected areas and shall terminate at the bucket with quick disconnect couplings at both ends |
| 13.4 |
| A 1/2 high pressure hose with a minimum of 3000psi working pressure shall be provided from the rear curb side of the truck to the platform for connection of a pressure washer |
| 13.5 |
| The water line shall be routed along the truck frame rail beginning at the left rear of the platform and be routed onto the booms in protected areas and shall terminate at the bucket with quick disconnect couplings at both ends |
| 13.6 |
| A transport height placard indicating the overall stowed height of the completed vehicle shall be mounted on the dash in clear view of the operator |
| 13.7 |
| Completed unit shall be tested and inspected before delivery to MDOT. A dated inspection sticker shall be installed inside rear window of truck |
| 13.8 |
| Electric moisture resistant back-up alarm, 95 dba sound level shall be provided |
| 13.9 |
| One (1) first aid kit |
| 13.10 |
| One (1) reflective triangle set |
| 13.11 |
| One (1) Fire extinguisher (minimum 5lbs ABC type) |
| 14.1 |
| All exterior lights will be LED type and conform with FMVSS 108 standards and shall include: |
a. Clearance
b. Stop
c. Tail
d. Turn
e. Back up
| 14.2 |
| Work/strobe light type and placement: |
a. MDOT will require the overhead beacons and the front, rear and side strobe lights to be an Amber/Green combination light with all light synchronized together and the flash pattern shall be set at a s follows, amber to be a quad fast flash and green will be a single slow flash
b. Four (4) L.E.D. corner strobe lighting to truck. Two (2) in rear light channel and Two (2) in front grille area. To have separate master switch located in chassis cab. Soundoff # EMPS2QMS4P - LED or equivalent. To be wired battery hot.
c. Two (2) L.E.D strobe lights mounted on both sides of the body, Install on same master on/off switch as the 4 corner strobes. Soundoff # EMPS2QMS4P - LED or equivalent. To be wired battery hot
d. Two (2) mini light bars to light support bar on both Curb side and Street side of boom rest. Lights to be visible from front, rear and sides of truck. To have separate on/off master switch located in chassis cab. Soundoff # ENRMB000EN L.E.D. light bar or equivalent. To be wired battery hot
e. Four (4) Whelen L.E.D perimeter lights. Two mounted just under mini light bars on both curb side and street side mounted all the way to the outer edge to eliminate shadows and two mounted at rear just under the tail shelf on both the curb side and street side . to have separate master switch located in chassis cab. Whelen # PELCB perimeter lights or equivalent. To be wired ignition key hot.
f. Two (2) Reverse/Work L.E.D Flood lights in rear chassis frame rails. To automatically come on when chassis is in reverse and to have separate on/off switch located in chassis cab. Whelen # PFBS6 work lights or equivalent. To be wired ignition key hot
g. Two (2) Work Lights L.E.D. Flood lights. One (1) mounted on light support bar facing cargo area. One (1) mounted at rear facing tail shelf area. To have separate master on/off switch located in Chassis Cab. Whelen # PFBS6 work lights or equivalent. To be wired ignition key hot
h. One (1) Go-Light mounted just below upper strobe light on Curb Side with WIRELESS chassis control and WIRELESS handheld control. Go-light Model # 20074 or equivalent. To be wired ignition key hot.
END OF SPECIFICATIONS