SECTION 801: CONSTRUCTION STAKING BY THE CONTRACTOR
801.1 Description
801.1.1 General
This Work consists of constructi on staking, essential for the c ontrol and completion of the Project.
801.1.2 Department-Supplied Documents and Services
The Department will provide the Contractor with survey data suf ficient to layout, control, and complete the Project (this data may not be required for som e book Projects). Survey data includes, but is not limited to, the following: 1. Location notes; 2. Design grades; 3. Elevations; 4. Slopes; 5. Projected locations of sl ope stake catch points; and 6. Lines and grades. The Department will supply the data as printout sheets, field b ooks, electronic pdf files (when available, and at the discretion of the Department), Righ t of Way maps, or Plans. The Contractor shall locate and verify required data points.
801.1.3 Contractor-Supplied Personnel & Services
The Contractor shall provide qualified personnel who are experi enced in Highway construction staking to perform the staking. Per NMSA 61-23-27 .13, Surveying Public Work. A New Mexico licensed professional surveyor is required to be i n responsible charge of construction staking surveys fo r the construction of any public Work involving surveying. The Contractor shall locate and establish control points with t he data given in the Plans. The Contractor shall verify Department-provided survey data, an d submit changes or adjustments (including recorded d ata) to the PM for approval at no cost to the Department.
801.2 MATERIALS—Reserved
801.3 Construction Requirements
801.3.1 General
The Contractor shall not disturb, cover, or remove reference ma rks without providing written documentation of the disturbed, covered, or removed ref erence mark to the Project Manager for approval. The Contractor shall reference marks inc lude the following: 1. Triangulation stations; 2. Benchmarks; 3. Corner; 4. Monuments; 5. Stake; Section 801: Construction Staking by the Contractor Page 912 6. Witness marks; or 7. Other reference marks located within the construction limits (including the limits of Temporary Construction Permits) or on the Right of Way line of this Project. The Contractor shall coordinate the reestablishment of removed or destroyed markers with the Department. When directed, the Contractor shall reset destroyed reference markers, at no additional cost to the Department, in accordance with 61- 23-28 NMSA, reference marks; removal or obliteration; replacement, and 12.8.2 NMAC, Minimum Standards for Surveying in New Mexico and the Geodetic Mark Preservation Guidebook , as prepared by the National Geodetic Survey. The Contractor shall submit notes regarding the referencing of monuments to the Project Manager. The Department will charge the C ontractor $1,000 for each monum ent the Contractor improperly referenced before dist urbing, covering, or removing.
801.3.2 Construction Staking Documentation
The Contractor shall complete construction staking field notes and other documentation in accordance with the Department’s current NMDOT Survey Handbook and accepted industry methods achieving required accuracy. The Contractor shall keep field notes in a standard field noteb ook in a clear, orderly, and neat manner, consistent with professional surveying practices, unless stated otherwise in the Contract. Construction staking documentati on will become the property of the Department when the Work is complete. The Contractor shall provide constructio n staking documentation to the Project Manager. The Contractor shall submit earthwork quantit ies, slope staking, surface extracted cross sections, and ear thwork calculations to the Pro ject Manager for review before completing that phase of the Work. The Contractor shall ensure a New Mexico licensed professional surveyor or professional Engineer stamps and certi fies the quantities and all submittals. The Department will not Accept earthwork quantitie s until the Project Manager receives all necessary survey data and reviews and approves the se quantities. The Contractor shall submit earthwork quantity information in h ard copy using double-end area or prismoidal computations, o r using Department-approved c omputer software.
801.3.3 Control Points
The Contractor shall use the reference control points provided by the Department or set by the Contractor’s personnel to establish construction staking points and to layout and control the Work. The Contractor shall notify the Project Manager of errors and o missions discovered in the control points before beginning affected Work. The Contractor shall move and re-establish benchmarks, control points, or monuments belonging to agencies of the United States, State, or local gov ernments in accordance with the accepted procedures of the resp ective agency. If the Project M anager directs the Contractor to perform this Work, the Department will, unless due to Contra ctor operations or if detailed in the Contract, pay in accordance with Section 104.4, “Extra Work .” Section 801: Construction Staking by the Contractor Page 913 The Contractor shall preserve and reference the provided survey control points in such a manner, that their location can be reestablished by the Contrac tor in cases of weather related disturbances or vandalism. The Contractor shall perform necessary transformation/calibrati on utilizing the referenced control points provided by the Department so that all survey Wo rk is in the coordinate system provided by the DOT.
801.3.4 Accuracy Requirements
The Contractor shall meet accuracy requirements dictated by the individual elements of the Work.
801.3.5 Accuracy Verification
The Project Manager will spot check the accuracy of the constru ction stakes, lines, grades, and layouts but will assume no responsibility for the a ccuracy or the final result. The Project Manager will inform the Contractor of discrepancies imm ediately.
801.3.6 Non-Specified Re-staking and Re-establishment of Contro l
The Contractor shall perform re-staking due to the following co nditions, at no additional cost to the Department: 1. Errors or omissions by Contractor personnel, or 2. The Contractor’s negligence. The Department will review re-st aking in accordance with Sectio n 104.2, “Significant Changes in the Character of Work,” Section 104.3, “Differing Si te Conditions,” and Section 104.4, “Extra Work” when due to the following condition s: 1. Resulting from errors or omissions by the Department; 2. At the Department’s request, or 3. Circumstances beyond the Contractor's control.
801.3.7 Construction Staking
801.3.7 1 Locations and Elevations
The Contractor shall verify locat ions and elevations of control points and benchmarks provided; establish as necessary.
801.3.7 2 Centerline
The Contractor shall establish necessary construction centerlin e Project stationing and reference stakes for use in setting the grade and finishing sta kes, and re-establishing the construction centerline. The Con tractor shall establish necess ary Right of Way centerline Project stationing and reference stakes for use in determining the location of the Right of Way for construction staking purpos es, and re-establishing the Righ t of Way centerline.
801.3.7 3 Slope Stakes, Initial Ground Topographic Survey, and Clearing Stakes
The Contractor shall set slope stakes, and stationing at interv als no greater than 100 ft. The Contractor shall perform initial ground topographic survey before beginning construction. Section 801: Construction Staking by the Contractor Page 914 801.3.7.4 Grade Finishing Stakes The Contractor shall set grade finishing stakes (blue tops) to establish grade elevations and horizontal alignment at the top of Subgrade, top of Base Co urse, and top of Subbase. The Contractor shall set the finish stakes at intervals no more than 50 ft. If the Contractor uses automatic grade Equipment, the Contractor shall provide Eq uipment Specifications that will allow interval adjustments as per manufactures recommendat ion.
801.3.7 5 Drainage Structures
The Contractor shall survey and plot drainage Structure locatio ns and prepare Structure drawings to verify the accuracy of the Structure sections shown on the Plans. The Contractor shall submit the plotted drainage Structure profiles, along wit h a revised Structure list, to the Project Manager for review and Acceptance prior to drainage Str ucture construction.
801.3.7 6 Bridges
The Contractor shall perform all Bridge staking using the verti cal and horizontal control points provided by the Department. The Contractor shall stake, plot, and submit a Profile Grade for the Roadway approaches, departures, approach slabs, a nd Bridges. The Contractor shall identify any necessary adjustments before subm itting to the Project Manager.
801.3.7 7 Sign Structures
The Contractor shall stake all new sign locations. The Contrac tor shall stake and plot locations for extruded and overhead sign Structures. The Contr actor shall submit the plotted profile to the Project Manager f or Acceptance before submitting shop drawings for extruded and overhead sign Structures, and before ordering the Materials .
801.3.7 8 Slope Stake Changes
The Contractor shall perform routine slope stake changes as ne eded to blend slopes into the existing terrain as approved by the Project Manager. The Contractor shall perform slope stake changes required to bl end slopes into the existing terrain as approved by the Project Manager for additio nal Work as defined per Section 104.2, “Significant Changes in the Character of Work,” Section 104.3, “Differing Site Conditions,” and Section 104.4, “Extra Work.” 801.3.7.9 Curbs and Gutters The Contractor shall perform staking using vertical and horizon tal control points provided by the Department.
801.3.7 10 Miscellaneous Staking
The Contractor shall perform miscellaneous staking using vertic al and horizontal control points provided by the Departmen t. Miscellaneous staking inclu des staking for the following: 1. Material and Borrow Pits required for contract payment; 2. Guardrails; 3. Riprap, 4. Construction signs; 5. Delineators; Section 801: Construction Staking by the Contractor Page 915 6. Pavement markings; 7. Cattle guards; 8. Turnouts; 9. Ditches; 10. Fences; 11. Traffic control devices; 12. Permanent and major signs; and 13. Other miscellaneous Work the Project Manager deems necessar y to properly control the Work.
801.3.7 11 Other Staking Changes
The Contractor shall perform unexpected Work and construction s taking changes as directed by the Project Manager necessary for the completion of the Work.
801.3.7 12 Fence Station Markers
The Contractor shall provide a shop-made station marker every f ifth station. The marker shall be one (1) inch × five (5) inch × 14 inch black on white with three (3) inch stenciled numbers. The Contractor shall mount the markers on the fence o r on an appropriate shop- made post four (4) feet above the ground.
801.3.8 Removal and Disposal of Stakes
After Project completion and bef ore final Acceptance, the Contr actor shall remove and dispose of stakes and markers.
801.4 Method of Measurement
The Contractor shall submit a c onstruction staking schedule of values as part of CPM or monthly progress schedule to t he Project Manager for approval.
801.5 Basis of Payment
Pay Item Pay Unit Construction Staking by the Contractor Lump Sum The Department will make partial payments in accordance with th e approved construction staking schedule of values. The Department considers slope stake changes and other staking changes as Incidental to the completion of the Work and will not measure or pay for it separately.
801.5.1 Work Included in Payment
The Department will consider as included in the payment for th e pay item(s) listed in this section and will not measure or pay separately for the followin g Work: 1. Slope stake changes; and 2. Other staking changes. Section 802: Post Construction Plans Page 916