Section 686 Section 686 full compensation for furnishing all new materi als required, for excavation, backfill, sod replacement, construction, placing, reconnecting, and for testing; for all equipment, tools, labor, final clean up and incidentals necessary for completion of the work. Relocation of existing wiring, measured as prescribed above, will be paid for at the contract unit price per linear foot, which price shall be full compensation for furnishing all material, for trenching, backfilling, disconnecting, reconnecting, replacing sod, for all construction, testing, installing, conductors, conduit, J-boxes, connectors, miscellaneous materials, for final clean-up, tools, labor, equipment and incidentals necessary for completion of the work. Payment will be made under: 686-A: Relocation of Existing Lighting Assembly - per each 686-B: Relocation of Existing Wiring - per linear foot SECTION 699 - CONSTRUCTION STAKES
699.01 Description. This work consists of performing all calculations and other work
necessary to establish and/or verify all horizontal and vertical control data; and furnishing, placing and maintaining roadway construction stakes or bridge construction stakes, or both, necessary for the proper prosecution of all feat ures and items of the work under contract. This shall include, but not be limited to, grades and drainage structure locations, lengths, elevations and skews. When the contract includes a pay item for roadway construction stakes as provided herein, any references in other sections of the Standard Specifications to establishment of control points or construction staking "by the Department" shall be construed to mean "by the Contractor". This work may be performed utilizing Automated Machine Guidance technologies and systems in accordance with the standard specifications and contract documents. Automated Machine Guidance (AMG) is defined as the utilization of positioning technologies such as Global Positioning Systems (GPS), Robotic Total Stations, lasers, and sonic systems to automatically guide and ad just construction equipment according to the intended design requirements. Global Positioning Systems (GPS) shall NOT be used for determining any points above the subgrade line. The Contractor may use any type of AMG system(s) that result in compliance with the contract documents and applicable Standard Specifications. Automated Machine Guidance (AMG) is not a mandatory requirement. Automated Machine Guidance (AMG), conventional staking, or a combination of both may be used at the Contractor’s option for staking on this project.
699.02 Materials. The Contractor shall furnish all personnel, materials, equipment and
devices necessary for determining, establishi ng, setting, checking an d maintaining points, lines, grades and layout of the work. All surv eying equipment shall be properly adjusted and suited for performing the work required. Traffic control necessary for the proper execution of the work shall be furnished by the Contractor without separate measurement for payment. Stakes shall be of sufficient le ngth, thickness and quality to serve the purpose for which they are being used. All equipment required to accomplish automated machine guidance shall be provided by the Contractor. The Contractor may use any type of AMG equipment that achieves compliance with the contract documents and applicable Standard Specifications. The Contractor shall provide th e Department with an acceptable portable grade-verification device (Rover) to be used by the Department during the duration of the contract. On large projects with high production rates, the Contractor may be required to provide more than one device. At the end of the contract, the device will be returned to the Contractor. This device shall have the same capabilities as the unit used by the Contractor.
699.03 Construction Requirements.
699.03.1 General. The Department will establish, one time only, secondary control
points with elevations at distances not to exceed 1500 feet or that minimum distance necessary to maintain inter-visibility. For br idge work, the Engineer's field control will consist of a stationed baseline reference point near each end of the bridge(s) and one accessible bench mark near each bridge site. For the purpose of determining responsibility for construction stakes, lines and grades, a box bridge will not be considered as a bridge. The Contractor shall verify the accuracy of th e control points before proceeding with the layout for construction. When errors are discovered and control points do not agree with the plans, the Contractor shall promptly notify the Engineer in writing, and explain the problem in detail. The Engineer will advise the Contractor within fi ve (5) working days of any corrective actions that may be deemed necessary. The Contractor will be responsi ble for verifying and modifying, as necessary to best fit existing field conditions, lengths, locations, elevations and skew angles of all drainage structures shown on the construction plans. All junction box and inlet locations and heights shall also be verified and modified as necessary to fit existing field conditions. Modifications to the plans shall not be made without the consent of the Project Engineer. The Contractor will not be responsible for dete rmining the size of drainage structures, but should immediately report any suspected error to the Engineer. Heights of fill over drainage structures shall be checked to verify class of pipe, bedding and the appropriate standard and/or modified standard drawing(s) required in the construction with any differences from the plans bein g reported to the Engineer. The Contractor shall perform wo rk necessary to verify alignm ent and plan grades on all roadway intersections and tie-ins. Any discrepancies in grades, alignment, location and or dimension detected by the Contractor shall immediately be brought to the attention of the Project Engineer. The Contractor shall employ sufficient qualified personnel experienced in highway surveying and layout to complete the work accurately. The Contractor shall also determine and provide all additional grade controls a nd staking operations necessary to secure a correct layout and construction of the work. All minor variations in layout and grades required to meet field conditions shall be resolved with the Engineer and shall not be considered justification for adjusting contract price or time. Examples of minor variations in layout and grades are:
a.Adjustment of drainage or other structure length, alignment, and flow line elevation.
b.The adjustment of grades and alignmen t at roadway intersections, cross-overs, railroad crossings, interchanges, existing bridges and roadways.
c.Adjustment of curve data. The Contractor will be responsible for cal culating and laying out all additional lines, grades, elevations and dimensions necessary to construct the work required in the plans. All grades and other layout data computed by the Contractor shall be recorded and a copy of this data shall be furnished, with sufficient time for checking, to the Engineer before field work is started. The originals of all data shall be furnished to the Engineer on or before final inspection for the Department's permanent file. The Contractor shall also furnish personnel to assist the Engineer in taking tolerance verification checks or other notes to determine whether specified toleran ces are met. Any inspection or checking of the Contractor's layout by the Engineer and the approval of all or any part of it will not relieve the Contractor of the responsibility to secure proper dimensions, grades, and elevations of the several parts of the work. Prior to beginning construction on any structure ithat references to an existing structure or topographical feature, the Cont ractor shall check the pertinent location and grades of the existing structures or topogra phical features to determine whether the location and grade shown on the plans are correct. The Contractor shall stake cent erline control at each station, BOP, EOP, PC, PT, SC, CS, TS, ST, and equations just before field cross sectioning by the Department for both original and final cross sections. The Contractor shall furnish "as built" finish centerline elevations to the Project Engineer prior to final inspection of the project. The Contractor shall set stakes and/or flag s on the right-of-way line at each station and right-of-way break or as direct ed by the Engineer before clea ring operations are started on any section of roadway. Regardless of the method used, the Contractor shall meet the surface tolerances addressed in Section 321. The Contractor shall exercise care in the pres ervation of stakes and bench marks and shall reset them when they are damaged, lost, disp laced or removed. The Contractor shall use competent personnel and suitable equipment for the layout work required and shall provide that it be performed under the supervision of, or directed by, a Registered Professional Engineer or Registered Land Surveyor who is duly registered and entitled to practice as a Professional Engineer or Professional Land Surveyor in the State of Mississippi. The duties performed by said Registrant shall conform to the definitions under the “practice of engineering” and practice of “land surveying” in Mississippi Law and the latest edition of the MDOT Survey Manual. The MDOT Survey Manual can be obtained online at the following address. http://sp.mdot.ms.gov/RoadwayDesig n/Pages/MDOT-Survey-Manual.aspx The Contractor shall not engage the services of any person in the employ of the Department for the performance of any of the work covered by this Section or any person who has been employed by the Department within the past six months except those who have legitimately retired from service with the De partment during this period. All cross sections, measurements, and tickets required for determining pay quantities will be the responsibility of the Department. The Department reserves the right to check any or all of the Contractor's layout work for accuracy and shall be assisted by the Contractor 's personnel in such checking. When errors or discrepancies are found, th e Contractor will take measures necessary to correct, at no expense to the State, any construction that has been performed using the improper layout. Any inspection, checking and approval thereof by the Engi neer of work for which the Contractor is responsible will not relieve the Contractor of responsibility to secure correct dimensions, grades, elevations, alignments and locations of the work for satisfactory completion of the project and as a condition for final acceptance by the Department.
699.03.2 Conventional Staking. In addition to the requirements set forth in Subsection 699.03.1, the following shall be required when using the conventional staking method.
On grading projects, the Contractor shall se t slope stakes at each station and at the beginning and end of spirals and curves. Closer intervals will be required for sharp changes in grades or alignment, widening and certain other geometric details. The Contractor shall set subgrade blue tops on centerline, break points and at the left and right subgrade shoulder lines at intervals of not more than 100 feet on tangents and intervals of not more than 50 feet in curves. Closer intervals will be required for sharp changes in grades or alignment, widening, or super elevation. The Contractor shall furnish personnel to assist the Engineer in taking stringline and other notes to determine whether specified tolerances are met. On paving contracts, the Contractor shall set subgrade, base and paving blue tops. The base and pavement grade stakes shall be set on intervals in accordance with the applicable requirements of Sections 321, 403 and 501.
699.03.3 Automate d Machine Guidance. In addition to the requirements set forth in
Subsection 699.03.1, the following shall be required when using the automated machine grading method.
699.03.3 1--Automated Ma chine Guidance Work Plan . The Contractor shall submit a
comprehensive written Automated Machine Guidance Work Plan to the Engineer for review at least 30 days prior to use. The Proj ect Engineer will have to concur with the Plan prior to the Contractor performing any AMG work. The submittal of an AMG Work Plan shall be an indication of the Contractor's intention to utilize AMG instead of conventional methods on the project areas and elements stated in the Work Plan. The Engineer shall review the AMG Work Plan to ensure that the requirements of this specification are addressed. The Contractor shall assume to tal responsibility for the performance of the system utilized in the Work Plan. Any update or alteration of the AMG Work Plan in the course of the work shall be approved and submitted to the Department for determination of conformance with requirements of this specification. The AMG Work Plan shall describe how the AMG technology will be integrated into other technologies employed on the project. This shall include, but not limited to, the following:
1.A description of the manufacturer, model, and software version of the AMG equipment.
2.Information on the Contractor's experience in the use of AMG system (or Related Technologies) to be used on the project, including formal training and field experience of project staff.
3.A single onsite staff person as the primar y contact, and up to one alternate contact person for AMG technology issues.
4.A definition of the project boundaries and scope of work to be accomplished with the AMG system.
5.A description of how the project proposed secondary control(s) is to be established. It shall also include a list and map detailing control points enveloping the site.
6.A description of site calibration procedures including, but not limited to, equipment calibration and the frequency of calibration as well as how the equipment calibration and information will be documented to the Department and the Project Engineer. The documentation shall contain a complete r ecord of when and wh ere the tests were performed and the status of each equipment item tested within or out of the ranges of required tolerances.
7.A description of the Contractor's quality control procedures for checking mechanical calibration and maintenance of equipment. It shall also include the frequency and type of checks to be performed.
8.A description of the method and frequency of field verification checks and the submission schedule of results to the Project Engineer.
9.A description of the Contractor's contingency plan in the event of failure/outage of the AMG system.
10.A schedule of Digital Terrain Models (DTM) intended for use on the project. This shall be submitted to the Engineer for review, feedback, and communication.
699.03.3 2--State’s Responsibilities . The District Surveyor will set the primary horizontal
and vertical control points in the field for the project as per the latest edition of the Department Survey Manual. The control poin ts shall be in the Mississippi State Plane coordinate system. The Department will provide an electronic ali gnment file and primary control file for the project. This file will be based on the appropriate Mississippi State Plane Coordinate Zone either West or East. These files will be crea ted with the computer software applications MicroStation (CADD software) and GEOPAK (civ il engineering software). The data files will be provided in the native formats. The Contractor shall perform necessary conversion of the files for their selected grade control equipment, field verify the data for accuracy, and immediately report any errors to the Department. The Department will provide design data, if available, in an electronic format to the Contractor. These files will be created with the computer software applications MicroStation (CADD software) and GEOPAK (civ il engineering software). The data files will be provided in the native formats as specified in the Data Format section of this specification. No guarantee is made to the data accuracy or co mpleteness, or that the data systems used by the Department will be directly compatible with the systems used by the Contractor. Information shown on the plans marked with the seal (official plans as advertised) shall govern. The Engineer will perfor m spot checks as necessary of th e Contractor's machine control grading results, surveying calculations, records, field procedures, and actual staking. If the Engineer determines that the work is not being performed in accordance with the Specifications, the Engineer shall order the Co ntractor to re-construct the work to the requirements of the contr act documents at no additional cost to the Department.
699.03.3 3--Contractor ’s Responsibilities. The Contractor shall provide formal training,
as requested, on the use of the AMG Equipm ent, including Rover, and the Contractor's systems to the Department project personnel prior to the start of construction activities utilizing AMG. This training is for providing the Department project personnel with an understanding of the equipment, software, and electronic data being used by the Contractor. The Contractor shall use the alignment and control data provided by the Department. The Contractor shall bear a ll costs, including but not limited to the cost of actual reconstruction work that may be incurred du e to errors in application of Automated Machine Guidance techniques or manipulation of the Department design data in Digital Terrain Models (DTM). The Contractor sha ll also bear all costs associated with any graphical grading outside the model / typical section, such as tying to existing grades at the beginning or end of a project. The Contractor shall be responsible for converting the information on the plans and/or electronic data file provided by the Department into a format compatible with the Contractor's AMG system. The Contractor shall establish secondary control points at locations along the length of the project and outside the project limits and/or where work is performed beyond the project limits as required by the AMG system utili zed. The Contractor shall establish this secondary control using survey procedures as outlined in the latest edition of the MDOT Survey Manual. A copy of all new control point information shall be provided to the Engineer prior to construction activities. The Contractor shall be responsible for all errors resulting from their efforts and shall correct defi ciencies to the satisfaction of the Engineer and at no additional cost to the State. The Contractor shall preserve all reference points and monuments that are established by the District Surveyor outside the construction limits. If the Contractor fails to preserve these items, they shall be re-established by the Contractor to their original quality at no additional cost to the State. The Contractor shall set grade stakes at the top of the finished sub-grade and base course at all hinge points on the typical sections at 1000-foot maximum intervals on mainline, critical points such as, but not limited to, PC's, PT's, beginning and ending super elevation transition sections, middle of th e curve, and at least two loca tions on each of the side roads and ramps, and at the beginning and end of each cross slope trans ition where Automated Machine Guidance is used. These grade stak es shall be established using conventional survey methods for use by the Engineer to check the accuracy of the construction. On projects with grading, the Contractor shall set slope stakes and centerline stationing every 500 feet and at the beginning and end of spirals and curves. Closer intervals will be required for sharp changes in grades or alignment, widening and certain other geometric details. On projects with paving, the staking requirements addressed in Sections 403 and 501will not apply. The Contractor shall furnish an acceptable portable grade-verification device(s) (Rover) to verify grade tolerances. The Contractor will be required to set 20 grade points (hubs) per mile at locations determined by the Engineer for field verification. If tolerances are not met, additional grade points may be required by the Engineer. The Contractor shall furnish personnel to assist the Engineer in taking tolerance verification checks as necessary to determine whether specified tolerances are met. The Contractor shall meet the same accuracy requirements as detailed in the Standard Specifications. The Contractor shall be responsible for implementing the AMG system using the Mississippi State Plane Coordinate System. No localization methods will be accepted.
699.03.3 4--Data Format. It is the Contractor's responsibility to produce the Digital Terrain Model(s) and/or 3D line work needed for AMG. The Department does not produce
this data in its design process. The Depart ment does provide CADD files created in the design process to the Contractor. The CADD files provided by the Department are provided in the native software application formats in which they are created with no conversions, and their use in developing 3D data for machine guidance is at the discretion of the Contractor. The CADD files that may be available are listed below. Cross-Sections are one of the items provided but are not nece ssarily created at critical design locations. Therefore their use in Digital Terrain Models (DTM) for AMG is limited.
1.Project Control - Microstation DGN file and ASCII file
2.Existing Topographic Data - Microstation DGN file(s)
3.Preliminary Surveyed Ground Surface - GeoPak TIN, if available
4.Horizontal and Vertical alignment information - GeoPak GPK file and/or Microstation DGN file(s)
5.2D Design line work (edge of pavement, shoulder, etc.) - Microstation DGN file(s) 6. Cross sections - Microstation DGN file(s), GeoPak format
7.Superelevation - Microstation DGN file(s), GeoPak format 8. Form Grades - Microstation DGN file(s)
9.Design Drainage - Microstation DGN file(s) It is expressly understood and agreed that the Department assumes no responsibility in respect to the sufficiency or a ccuracy of these CADD files. These files are provided for convenience only and the plans constitute the legal document for constructing the project.
699.04 Me thod of Measurement. Construction stakes will be measured as a lump sum
quantity. When Pay Item No. 699-A, Roadwa y Construction Stakes, is provided in the contract, measurement shall include the staking of all bridges, including detour bridges, which are a part of the contract.
699.04.1 Roadway Construction Stakes. Roadway Construction Stakes will be
measured for payment in accordan ce with the following schedule:
a.When one percent of the original contract amount is earned from all direct pay items, 10 percent of the amount bid for Roadway Construction Stakes will be paid.
b.When five percent of the original contract amount is earned from all direct pay items, 25 percent of the amount bid for Roadway Construction Stakes will be paid.
c.When 20 percent of the original contract amount is earned from all direct pay items, 50 percent of the amount bid for Roadway Construction Stakes will be paid.
d.After the Contractor has earned 50 percent of the original value of all direct pay items, the amount paid will be based on the contract percent complete.
699.04.2 Bridge Construction Stakes. Bridge Construction Stakes will be measured for
payment in accordance with the following schedule:
a.When one percent of the original contr act value of all bridge items is earned, 10 percent of the amount bid for Bridge Construction Stakes will be paid.
b.When five percent of the original contract value of all bridge items is earned, 25 percent of the amount bid for Bridge Construction Stakes will be paid.
c.When 20 percent of the original contract value of all bridge items is earned, 50 percent of the amount bid for Bridge Construction Stakes will be paid.
d.After the Contractor has earned 50 percent of original contract value of all bridge items, the amount paid will be based on th e percentage of work completed on all bridge items.
699.05 Basis of Payment. Construction stakes, measured as prescribed above, will be
paid for at the contract lump sum price, which shall be full compensation for completing the work. Payment will be made under: 699-A: Roadway Construction Stakes - lump sum 699-B: Bridge Construction Stakes - lump sum
Division 700 — Division 700
Division 700 — Materials and Tests
700.01 General . Materials will be inspected and sampled in accordance with current
Department SOP pertaining to inspecting and sampling. Unless otherwise provided, all materials furnis hed that are to remain in place after final acceptance shall be new and unused before incorp oration into the work, except that crushed reclaimed concrete pavement meeting the requirements of Section 703, as amended, may be used to produce aggregate for all asphalt pavements. When allowed by the specifications, Recycled Asphalt Pavement (RAP) may be used in the manufacture of asphalt pavements. Other recycled products approved for use by the Department may be incorporated in the work. The Contractor shall maintain sufficient approved materials on hand so that delays to the work will not result from the necessary samplin g, testing, and evaluation of test results. Domestic steel, iron and wire products includi ng prestressing cable and strand shall be furnished for incorporation in the work. All manufacturing processes, including application of a coating, for these materials must occur domestically. However, pig iron and processed, pelletized, and reduced iron or e manufactured outside of the United States may be used in the domestic manufacturing process for steel and/or iron products. For the purpose of this specification, the activity of co ating is considered a manufacturing process. The material being applied as a coating is not covered under Buy America. Coating includes all processes that protect or enhance the value of the material to which the coating is applied, such as epoxy coatings, galvanizing, painting, etc. Domestic shall be understood to mean all Stat es of the United States, District of Columbia, Puerto Rico, American Samoa, Guam, the Virgin Islands and any other place subject to the jurisdiction of the United States. In the case of coatings for the above referen ced domestic steel, iron and wire products, it shall be the Contractor's responsibility to forw ard to the State Materials Engineer a certified statement from those having applied a coating to these materials that the application of the coating occurred domestically. It shall be the Contractor's responsibility to forward to the State Materials Engineer, with copies to the Project Engineer, such certification from the manufacturer, or at the election of the State Materials Engineer, such cer tification may be accepted directly from a manufacturer annually, or as otherwise re quested by the State Materials Engineer.
700.02 Glossary of Terms and Definitions .
Aggregate - Inert material such as sand, gravel, lightweight aggregates, broken stone, slag, shell, or combinations thereof. Approved Products List (APL) – The Materials Division maintains a list of approved products that have completed the source appr oval process and in compliance with these standards. Argillaceous - Containing or consisting of clay.
Source: Mississippi Standard Specifications for Road and Bridge Construction, 2017 Edition. Pages 720–727 of 1,113.