2009 MDOT Exterior Improvements Project Log.pdf

KleikampM Information Only

MICHIGAN

DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION

FOR

ELECTRONIC STATIC SCALE

ESC:MAK 1 of 6 06-17-09

a. Description. This work shall consist of installing truck weighing platforms with all the necessary electronic equipment. The Contractor shall provide all materials and labor to place the scale system in operation. The scale system will be accepted upon certification by the Michigan Department of Agriculture, according to the requirements of the National Institute of Standards and Technology Handbook 44, and verification that the system is in compliance with the following specifications:

1. General Requirements

The contractor shall provide shop drawings of the Electronic Static Scale and foundation design for review by the Engineer. These shop drawings shall be sealed by a Professional Engineer Licensed in the state of Michigan. The contractor shall supply the Engineer with as many copies of the shop drawings as needed for review distribution. The Engineer will require a reasonable time for review and acceptance of these drawings.

The scale shall have a clear and unobstructed overall weighing surface of not less than 9 feet long and not less than 14 feet wide.

The scale shall be designed to perform as an axle scale to provide individual axle, axle grouping weights, and a total gross vehicle weight.

The scale shall have a nominal capacity of 105,000 pounds graduated in 20-pound increments.

The scale shall have a dual tandem axle capacity (two axles spaced 48 in. apart) of 70,000 pounds and shall be designed to provide a fatigue life of 20 years.

The scale shall meet the requirements set forth by the current edition of the National Institute of Standards and Technology Handbook 44 (NIST H-44). The scale manufacturer shall provide a Certificate of Conformance (NTEP Certification) to these standards upon request.

The scale shall be a Mettler Toledo Scale Type Model 7541 or approved equal.

2. Scale Foundation

The foundation shall be a pit-type design.

ESC:MAK 2 of 6 06-17-09

The foundation shall be constructed with 2003 MDOT Standard Specifications for Construction, S1 concrete with a minimum strength of 4,000 psi at a 28-day cure.

The foundation shall be reinforced in all load-bearing areas

The foundation shall be constructed to provide drainage.

The foundation shall include approaches on each end of the scale which are in accordance to the guidelines of NIST H-44 and have a smoothness (flat) of .125" in 10'. There shall be a minimum 1" expansion joint between the pit and approach slabs. Concrete approach slabs shall be constructed with 2003 MDOT Standard Specifications for Construction, P1 concrete. The approaches shall be constructed of 9" reinforced concrete pavement with joints as specified on the R- 43-P Series Standard Plans.

3. Weighbridge Specifications

The weighbridge shall consist of a prefabricated module designed for the use of a field poured concrete deck with a minimum thickness of 12" and two mats of reinforcing steel (rebar).

All weighbridge welding must be performed by welders with current AWS D1.5 certification.

The weighbridge main girders shall be a minimum of WF24X68. The cross channels shall be a minimum of C8X11.5, and the end cross members shall be a minimum of W12X35.

A manhole shall be included with the scale for pit access.

The scale weighbridge assemblies shall incorporate no bolted connections between the load cell and weighbridge assemblies.

4. Load Cell Specifications

The load cell base plates shall have a minimum thickness of 1" and shall be anchored to the scale foundation.

Each load cell shall have a minimum capacity of 45 metric tons (100,000 pounds).

Load cells shall be certified by NTEP and meet the specifications as set forth by NIST H-44 for Class IIIL devices. A Certificate of Conformance to these standards shall be provided by the manufacturer upon request.

Load cells shall be digital with an integral microprocessor and analog to digital conversion function located within the load cell housing.

ESC:MAK 3 of 6 06-17-09

Load cells shall output only converted digital information to the scale instrument.

Analog output of signals from the load cell is not acceptable.

The load cell assembly shall be constructed to perform as a rocker pin and shall have no positive fixed mechanical connectors, such as bolts or links, which are required in mounting the load cell to the WeighBridge or foundation base plates.

The load cell shall be of stainless steel construction and hermetically sealed with a minimum NEMA 6P (submersible) rating.

The load cell shall have a positive lock quick connector integral to its housing for connecting and disconnecting the load cell interface cable at the load cell. The connector shall be of glass to metal pin type construction to maintain a hermetic seal.

The load cell shall have the following specifications:

V min pounds maximum Hysteresis + 0.025% of full scale Non-Linearity + 0.015% of full scale Creep (30 minutes) + 0.017% of applied load Temperature Range -10 C - +40C

Load cells shall be Mettler-Toledo, Inc. DigiTOL® POWERCELL or approved equal.

The load cell and scale platform to scale instrument interface cables shall be stainless steel sheathed for environmental and rodent protection.

The load cells, load cell mounting hardware, and junction boxes shall be constructed of stainless steel. The cables shall be stainless steel sheathed.

5. Scale Instrument Specifications

The scale instrument shall be NTEP approved and meet or exceed the specifications set forth by NIST H-44 for Class II, III, and IIIL Devices. A Certificate of Conformance to these standards shall be provided by the manufacturer upon request.

The scale instrument shall be housed in an enclosure that is suitable for desktop mounting.

The scale instrument shall be capable of performing calibration, span, zero, and shift adjustment through software calculations that require no in scale adjustment.

The scale instrument shall use English language prompts to lead the start-up personnel through all phases of set-up, calibration, and testing. Entry of information shall be accomplished through a QWERTY keyboard.

ESC:MAK 4 of 6 06-17-09

The scale instrument shall be capable of communicating with up to 24 digital load cell assemblies that may be partitioned as one or two scales.

The scale instrument shall be capable of full digital filtering of the weight information sent from the load cells and updating the instrument's weight display 18 times per second.

The scale instrument shall only receive digital information from the load cell assemblies. There shall be no analog to digital conversion function in the scale instrument or in junction boxes between the load cell and the scale instrument.

The scale instrument shall be capable of assigning each load cell with its own unique identification number and shall be capable of displaying the weight reading of each individual load cell through the instrument without disconnecting any of the load cells from the system.

The scale instrument shall communicate with each individual load cell and shall display an error code immediately in the event of a load cell failure. This error code shall identify the failed load cell and the cause of the failure.

The operator shall be able to enter up to 20 alphanumeric comments through the QWERTY keyboard.

The scale instrument shall have gross/net weight switching and the ability to recall the gross or tare weights in the net mode.

The scale instrument shall be capable of being programmed and calibrated in pounds or kilograms.

The scale instrument shall have a standard communication port configured in bit serial ASCII, bi-directional, RS232C, or 20mA current loop. The port shall be selectable for on demand or continuous communications at up to 9600 baud. The port shall be capable of receiving a remote print command via serial communication or hard wire input.

The scale instrument shall have a standard second data output port in the future that is capable of being configured in a bit serial ASCII, bi-directional, RS232C, 4-wire RS522, or 2-wire RS485 format with up to 9600 baud communications rates.

The scale instrument shall have a transaction counter to automatically assign sequence numbers to transactions.

ESC:MAK 5 of 6 06-17-09

The scale instrument shall have output the following Gross, Tare, and Net Weight 20 character alphanumeric comment Transaction Counter Time and Date

The scale instrument shall be capable of being programmed for sign corrected net weighing so that all net weights are positive.

The scale instrument shall have automatic zero capture on power-up selectable to capture zero at a range of the full-scale capacity.

The scale instrument shall have a programmable power-up selectable to capture zero at a range of the full-scale capacity.

The scale instrument shall have adjustable digital filtering.

The scale instrument shall have adjustable automatic zero maintenance selectable for a range of displayed increments.

The scale instrument shall have push-button zero selectable for a range of full-scale capacity.

Tare, Zero, and Print from the scale instrument shall provide remote diagnostics and have the ability to email or page a service technician when unusual situations or error code appear.

The scale instrument shall provide remote diagnostics and have the ability to email or page a service technician when unusual situations or error code appear.

The scale instrument shall provide the ability to accumulate axles.

6. Lightning Protection

Major scale components including load cells, scale instrument, and printer shall be included in the lightning protection system.

Grounding of all scale components including load cells, scale instrument, printer, and accessories shall be to one common point. Multiple ground point systems are not acceptable.

An AC line surge protector shall plug into a common electrical outlet and have receptacles for the scale instrument, ticket printer, and other scale accessories.

Each AC line surge protector required shall have isolated grounding, hospital grade duplex receptacles, and an internal 15-amp circuit breaker.

ESC:MAK 6 of 6 06-17-09

Verification of lightning protection system performance shall be available in writing from the manufacturer upon request.

b. Warranty. The warranty shall be in accordance with MDOT special provision for Scale

Unit Warranty.

c. Measurement and Payment. The completed work, as measured for ELECTRONIC STATIC SCALES SYSTEM, will be paid for at the contract unit price for the following contract item (pay item):

Contract Item (Pay Item) Pay Unit Electronic Static Scale LSUM

Payment for the above item will include all labor, materials, and equipment required to complete the items at the project site.

SPECIAL PROVISION

FOR

SCALE UNIT WARRANTY

C&T:FMS 1 of 5 06-14-01

C&T:APPR:JDC:PI:06-14-01

a. Description. The Scale Unity Warranty shall consist of the warranty bond and the terms of this special provision. This special provision establishes the common terms and definitions applied to the weigh station projects requiring a warranty (the warranted work). The Scale Unit Warranty warrants the Department against defects in materials and workmanship. This specification warranties that the scale meets all Michigan Axle configurations for a period of five (5) years after acceptance of the weigh station scale unit.

b. Definitions.

1. Acceptance Date of Construction - The date when the warranted work is complete, has been determined by the Department to be in compliance with the contract specifications and is open to traffic. This is the date of initial acceptance and constitutes the start date for the warranty period.

2. Warranty Bond - A surety which guarantees that the warranty requirements are met.

Failure to satisfactorily complete the warranty requirements will result in forfeiture of all or part of the warranty bond.

3. Warranty Work - Corrective action taken to bring the warranted work into contract compliance for release of the warranty bond.

4. The scale unit includes all the equipment used to weigh, record, communicate, display, and print, truck weights.

5. Department - The Michigan Department of Transportation (MDOT) or the Michigan

State Police (MSP) acting on behalf of MDOT.

6. Single Draft Weigh - Weighing a vehicle located on a flat surface by simultaneously placing a portable scale under each wheel or set of wheels and recording the weight.

c. Initial Acceptance. The Department and the Contractor shall jointly review all completed warranted work or a portion thereof as determined by the Department. If the work does not meet contract requirements, the Contractor shall make all necessary corrections, at their expense, prior to initial acceptance. Initial acceptance will occur as soon as the Department determines that contract requirements have been met for the warranted work. The date on which initial acceptance occurs is termed the Acceptance Date of Construction.

C&T:FMS 2 of 5 06-14-01

Initial acceptance will be documented and executed jointly by the Department and the Contractor on a form furnished by the Department. A copy of the form will be sent to the Contractor’s warranty bond surety agent by the Department. Neither the initial acceptance nor any prior inspection, acceptance or approval by the Department diminishes the Contractor’s responsibility under this warranty.

The Department may accept the work and begin the warranty period, excluding any area needing corrective work, to accommodate seasonal limitations or staged construction. Acceptance of material, in penalty, under the Department’s quality assurance program will not relieve the Contractor from meeting the material and workmanship warranty requirements for the accepted material.

d. Warranty Bond. The Contractor shall furnish a single-term warranty bond in an amount stipulated in this document. The effective starting date of the warranty bond shall be the Acceptance Date of Construction. The warranty bond will be released at the end of the warranty period or after all warranty work has been completed, whichever is latest.

e. Rights and Responsibilities of the Department. The Department:

1. Reserves the right to approve the schedule proposed by the contractor to perform warranty work.

2. Reserves the right to approve all materials and specifications used in warranty work.

3. Reserves the right to determine if warranty work performed by the Contractor meets the contract specifications.

4. Reserves the right to perform, or have performed, routine maintenance during the warranty period, which routine maintenance will not diminish the Contractor’s responsibility under the warranty.

5. Reserves the right, if the Contractor is unable, to make immediate emergency repairs to the pavement to prevent an unsafe road condition as determined by the Department. The Department will attempt to notify the Contractor that action is required to address an unsafe condition. However, should the Contractor be unable to comply with this requirement, to the Department’s satisfaction and within the time frame required by the Department, the Department will perform, or have performed, any emergency repairs deemed necessary. Any such emergency repairs undertaken will not relieve the Contractor from meeting the warranty requirements of this special provision. Any costs associated with the emergency repairs will be paid by the Contractor if it is determined the cause was from defective materials and/or workmanship.

6. Is responsible for monitoring the scale unit throughout the warranty period and will provide the Contractor all written reports of the scale unit’s condition related to the warranty requirements.

C&T:FMS 3 of 5 06-14-01

7. Is responsible for notifying the Contractor, in writing, of any corrective action required to meet the warranty requirements.

8. Is responsible for providing traffic control during the time warranty work is being performed on the scale unit.

f. Rights and Responsibilities of the Contractor. The Contractor:

1. Shall warrant to the Department that the warranted work will be free of defects in materials and workmanship. The warranty bond shall be described on a form furnished by the Department. The completed form shall be submitted to the Department prior to award of contract.

2. Is responsible for performing all warranty work on the scale unit at the Contractor’s expense.

3. Is responsible for performing all temporary or emergency repairs, resulting from being in non-compliance with the warranty requirements, using Department approved materials and methods.

4. Shall notify the MDOT and MSP and submit a written course of action for performing the needed warranty work seven calendar days prior to commencement of warranty work, except in the case of emergency repairs as detailed in this special provision. The submittal must propose a schedule for performing the warranty work and the materials and methods to be used.

5. Shall follow a Department-approved maintaining traffic plan when performing warranty work.

6. Is required to supply to the Department original documentation that all insurance required by the contract is in effect during the period(s) that warranty work is being performed, as required by the 2003 Standard Specifications for Construction.

7. Shall furnish to the Department, in addition to the regular performance and lien bond for the contract, supplemental performance and lien bonds covering any warranty work being performed. These supplemental bonds shall be furnished prior to beginning any warranty work, using Department-approved forms. These supplemental bonds shall be in the amount required by the Department to cover the costs of warranty work.

8. Shall complete all warranty work within 20 days of notification of defect or as otherwise agreed to by the Department. Failure to complete the warranty work in the agreed-to time may result in forfeiture of all or part of the warranty bond.

9. Shall be liable during the warranty period in the same manner as Contractors currently are liable for their construction related activities with the Department pursuant to the 2003 Standard Specifications for Construction. This liability shall arise and continue

C&T:FMS 4 of 5 06-14-01 only during the period when the Contractor is performing warranty work. This liability is in addition to the Contractor performing and/or paying for any required warranty work, and shall include liability for injuries and/or damages and any expenses resulting therefrom which are not attributable to normal wear and tear of traffic and weather, but are due to non-compliant materials, faulty workmanship, and to the operations of the Contractor as set forth in the 2003 Standard Specifications for Construction.

10. Shall provide the Department with a telephone number staffed during normal business hours which will be used to notify the Contractor of the need for warranty work.

g. Evaluation Method. The scale platform will be certified by the Michigan Department of Agriculture (MDA) and periodically check by MSP. The MDA will certify the scale platform using the test method described in NIST Handbook 44 for axle-load scales.

The MSP may periodically check the scale unit for accuracy. Various configurations or trucks may be weighed on the scale unit and compared to a single draft weigh of the same vehicles.

h. Warranty Requirements. Warranty work will be required when any of the following criteria are met as a result of a defect in materials and/or workmanship as determined by the Department.

Criteria 1 - The limit of tolerance of the scale platform is exceeded.

Criteria 2 - For a static scale system, the scale system produces weights for a particular vehicle type or axle configuration not within ±1% of the weight obtained through a single draft weigh of the vehicle(s) in question. For a WIM scale system, the system no longer complies with the functional performance requirements for a WIM system per ASTEM E1318-94.

Criteria 3 - Cracks appear in the approach or departure concrete which do not affect the accuracy of the scale at the time of discovery, but may in time, cause a deterioration of this concrete.

During the warranty period, the Contractor will not be held responsible for scale unit distresses that are caused by factors unrelated to materials and workmanship. These include, but are not limited to: chemical and fuel spills, vehicle fires, snow plowing, and quality assurance testing such as coring. Other factors considered to be beyond the control of the Contractor which may contribute to scale unit distress will be considered by the engineer on a case-by-case basis upon receipt of a written request from the Contractor. Normal non-violent weather conditions, including lightning, will not be considered beyond the control of the Contractor.

i. Emergency Repairs. If the Department determines that emergency repairs are necessary for public safety, the Department or its agent may take repair action. Emergency repairs will be authorized by the MDOT Region Engineer or MSP.

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Prior to emergency repairs, the Department will document the basis for the emergency action. In addition, the Department will preserve evidence of the defective condition.

j. Non-extension of Contract. This special provision shall not be construed as extending or otherwise affecting the claim process and statute of limitation applicable to this contract.

k. Measurement and Payment. All costs, including engineering and maintaining traffic costs, associated with meeting the requirements of this special provision are considered to be included in the Contract unit prices for the warranted work regardless of when such costs are incurred throughout the warranty period. These costs include, but are not limited to, all materials, labor, and equipment necessary to complete required warranty work.

l. Amount of Warranty Bond. The amount of the Warranty Bond for this project shall be an amount equal to the bid price for the Electronic Static Scale.

SPECIAL PROVISION

FOR

SLOPE RESTORATION

LAN:RRL 1 of 2 C&T:APPR:DMG:EMB:11-08-02

REVISED:10-18-05

a. Description. This work consists of preparing all areas designated for slope restoration on the plans or by the Engineer, and applying topsoil, fertilizer, seed, and mulch with mulch anchor, mulch blanket or high velocity mulch blanket to those areas. Turf establishment shall be in accordance with Section 816 of the Standard Specifications for Construction and Standard Plan R- 100 Series, except as modified herein or otherwise directed by the Engineer.

b. Materials. The materials and application rates specified in Sections 816 and 917 of the Standard Specifications for Construction apply unless modified by this special provision or otherwise directed by the Engineer.

1. Seeding mixture as called for on the plans.

2. Fertilizer, Chemical Nutrient, Class A shall be used on this project.

3. Topsoil Surface, Furnished or Salvaged, 4 inch shall be used on this project.

4. Mulch and Mulch Anchoring, Mulch Blanket and High Velocity Mulch Blanket shall be used on this project.

c. Construction. Construction methods shall be in accordance to subsection 816.03 of the Standard Specifications for Construction. Begin this work as soon as possible after final grading of the areas designated for slope restoration but no later than the maximum time frames stated in subsection 208.03 of the Standard Specifications for Construction. It may be necessary, as directed by the Engineer, to place materials by hand.

Prior to placing topsoil, shape, compact and assure all areas to be seeded are weed free. Place topsoil to the minimum depth indicated above, to meet proposed finished grade. If the area being restored requires more than the minimum depth of topsoil to meet finished grade, this additional depth must be filled using topsoil or, at the Contractor’s option, embankment. Furnishing and placing this additional material is included in this item of work.

Topsoil shall be weed and weed seed free and friable prior to placing seed. Apply seed mixture and fertilizer to prepared soil surface. Seed shall be incorporated into top ½ inch of topsoil.

Mulch shall be applied at a rate of 2 tons per acre. Place Mulch Anchoring over the mulch at a rate specified in subsection 816.03.F of the Standard Specifications for Construction. Mulch Blanket and High Velocity Mulch Blanket shall be placed in accordance to subsection 816.03.H of the Standard Specifications for Construction and as shown on Standard Plan R-100 Series.

If an area washes out after this work has been properly completed and approved by the Engineer, make the required corrections to prevent future washouts and replace the topsoil, fertilizer, seed and mulch. This replacement will be paid for as additional work using the applicable contract items.

LAN:RRL 2 of 2 11-08-02

REVISED:10-28-05

If an area washes out for reasons attributable to the Contractor’s activity or failure to take proper precautions, replacement shall be at the Contractor’s expense.

The Engineer will inspect the seeded turf to ensure the end product is well established, weed free, in a vigorous growing condition, and contains the species called for in the seeding mixture.

If weeds are determined by the Engineer to cover more than ten percent of the total area of slope restoration, the Contractor shall provide weed control in accordance to subsection 816.03.J of the Standard Specifications for Construction. Weed control shall be at the Contractor’s expense with no additional charges to the project for materials, labor or equipment.

d. Measurement and Payment. The completed work as described will be paid for at the contract unit price for the following contract item (pay item):

Contract Item (Pay Item) Pay Unit

Slope Restoration, Type ___...........................................................................Square Yard

Payment for Slope Restoration, Type A shall be placed in all other areas not described in the other types of Slope Restoration and will be measured by area in square yard in place. All materials, labor and equipment required to install Slope Restoration, Type A which includes Topsoil Surface, Furnished or Salvaged; Fertilizer, Chemical Nutrient, Class A; Seeding Mixture;

Mulch and Mulch Anchoring will not be paid for separately but shall be included in the contract unit price bid for Slope Restoration, Type A.

Payment for Slope Restoration, Type B shall be placed parallel (6 feet) from the shoulders of the roadway, and in areas that have a 1-on-3 slope, and in any ditch with a grade of less than 1.5%, or as directed by the Engineer. Slope Restoration, Type B will be measured by area in square yard in place. All materials, labor and equipment required to install Slope Restoration, Type B which includes Topsoil Surface, Furnished or Salvaged; Fertilizer, Chemical Nutrient, Class A;

Seeding Mixture; and Mulch Blanket will not be paid for separately but shall be considered included in the contract unit price bid for Slope Restoration, Type B.

Payment for Slope Restoration, Type C shall be placed in areas that have a 1-on-2 slope or steeper, any ditch with a grade of 1.5% or more, or as directed by the Engineer. Slope Restoration, Type C will be measured by area in square yards in place. All materials, labor and equipment required to install Slope Restoration, Type C which includes Topsoil, Furnished or Salvaged; Fertilizer, Chemical Nutrient, Class A; Seeding mixture; and High Velocity Mulch Blanket will not be paid for separately but shall be considered as included in the contract unit price bid for Slope Restoration, Type C.

Payment for Slope Restoration, Type D shall be placed only in the reinforced slope areas that have a 1-on-2 slope or steeper and are covered with a turf establishment mat as directed by the Engineer. Slope Restoration, Type D will be measured by area in square yards in place. All materials, labor and equipment required to install Slope Restoration, Type D which includes Topsoil, Furnished or Salvaged; Fertilizer, Chemical Nutrient, Class A; and Seeding, Mixture ___;

will not be paid for separately, but shall be considered as included in the contract unit price bid for Slope Restoration, Type D.