8-210 Section 821. Preservation of Boundary Monuments
821.01 Description
This work consists of preserving the corners shown on the plans, identified in the contract, discovered within the project limits, or as directed by the Engineer or Region Surveyor . These corners are defined in subsection
821.01 A . The Department considers the terms monument, point , and corner
synonymous when used in this section.
A.Definitions Public Land Survey System (PLSS) Corners . Section Corners, Quarter Corners, Center of Sections, Protracted Government Corners, Private Claim Corners, Government Lot Corners, and Meander Corners. Other Corners . Corners that control boundaries for parcels of land and include Property Corners, Exterior and Interior Plat Monuments, and MDOT Right -of-Way Corners. Alignment Control Points. Points of Curvature (PCs), Points of Tangent Intersections (PIs), Points on Tangents (POTs), Points on Tangents in Curve Areas (POCTs), and Points on Curve Centerline (POCs). Preserve. Corners defined in this document that are identified as being within the limits of a construction project and the existing object is expected to be destroyed by construction. These corners are intended to be preserved by reestablishing the object in its original position at the end of the construction project. Protect. Corners defined in this document that are identified as being within the limits of or near a construction project and the existing object is not expected to be destroyed by construction. These corners are intended to be protected by marking and identifying the object as not to be disturbed. Locations and measurements are obtained prior to construction to provide the necessary information to reestablish the object in the event the construction project destroys the corner.
B.Administrative Requirements. In addition to the requirements included in the Occupational Code (MCL 339.101 et seq. ), work must be perform ed by employees of the professional surveying firm under the direct supervision of a professional surveyor, licensed in the State of Michigan, to verify point positions, evaluate witness es, place points, and prepare report (s). During construction activities, c oordinate with the Region Surveyor (in the event there is no Region Surveyor, substitute Supervising Land Surveyor) in the following: MDOT Standard Specifications for Construction Section 821 8-211 1. Verification of preliminary point positions : The licensed professional surveyor must field verify the list provided by MDOT of the corners within and near the construction limits that need to be Preserved or Protected .
a.Any additions or subtractions of corners to the provided list must be submit ted to the Region Surveyor prior to the start of construction activities for approval .
b.Review the physical locations of corners and compare to the construction plans . Identify any corners located in existing and/or proposed bridge decks, bridge structures , or other locations that are difficult to access or to place a monument as early as possible. Contact the Engineer for further direction and a documented plan of action.
c.Notify the Region Surveyor of the completio n of the required preliminary verification and witnessing work before construction activities begin on the project.
d.The Region Surveyor will review , with the licensed professional surveyor, the positions of corners within and near the construction limits identified on the plans as Protect .
e.If a corner or point that is marked as Protect and is in danger of being disturbed, identify and witness the corner before construction, using the same method as corners identified as Preserve.
2.Witnessing All Points Marke d as Preserved or Protected
a.PLSS Corners and Alignment Control P oints identified as Preserve and Protect must be witnessed with four straight -line witnesses (non-straight -line witnesses may be used if agreed to in writing by the Region Surveyor prior to t he work commencing) and the coordinates of the corner in the current Michigan Coordinate System (MCS) before construction activities begin on the project .
b.All Other Corners identified as Preserve and Protec t can be witnessed using the coordinates of the corner in the current MCS before construction activities begin on the project .
3.Installing Monuments and/or V erifying Monuments After Construction
a.Reestablish all corners and points marked as Preserve in accordance with this section. MDOT Standard Specifications for Construction Section 821 8-212 b. PLSS Corners and Alignment Control Points marked as Preserve must also be reestablished in accordance with the Corner Recordation Act (MCL 54.201 et seq. ).
c.Corners identified as Protect, but witnessed and left undisturbed, are not require d to be reestablished. Maintain document ation of witnesses for payment purposes.
4.Final Reporting Requirements
a.For all corners that have been witnessed, create a table identifying the MCS coordinates of the point, identify the monument that was found prior to construction, and identify the monum ent set after construction.
b.For all PLSS Corners and Alignment Control Points, complete the requirements of this section in accordance with the Corner Recordation Act (MCL 54.201 et seq. ) for each corner and point identified as Preserve. The licensed professional surveyor must submit, to the Region Surveyor , a draft PDF of the Land Corner Recordation Certificate (as prescribed in the Michigan Land Corner Recordation General Rules R 54.251-253) for each PLSS Corner and Alignment Control Point prior to recording for review.
c.The licensed professional surveyor must record the Land Corner Recordation Certificate(s) in the Register of Deeds Office in the county where the corner is located.
d.Submit a PDF for each Land Corner Recordation Certificate(s) with the Register of Deeds recording stamp and the Liber and Page or File Number where the certificate is recorded to the Department .
e.Provide a signed, sealed, and dated PDF to the Department of all corners identified as follows: Preserve – indicating the corners preserved with replacement monumentation. Note: only PLSS C orners and Alignment Control Points require new Land Corner Recordation Certificate s. Protect – indicating the corners protected and witnessed by the licensed professional surveyor . Include a statement signed, sealed, and dated by the licensed professional surveyor indicating that the corners were found undisturbed after construction. MDOT Standard Specifications for Construction Section 821 8-213 Table of Other Corner s found and reset after construction. Include a description of the methods used to replace the corners. Complete the work for all corners Preserved or Protected and submit the documentation within 4 weeks after the completion of surveying work.
821.02 Materials
Provide and install a monument to mark the location of all reestablished monuments . Unless noted otherwise in the plans, all monuments must conform to MCL 54.201 et seq., and standards for size and magnetic reading, and must be legibly capped showing the license number of the licensed professional surveyor. Provide and install monument box castings at survey points shown on the plans or as directed by the Region Surveyor .
821.03 Construction
Reestablish the horizontal position of monuments within 0.02 foot of the original position. Install points in paved surfaces in monument boxes . Install points located outside paved surfaces and within gravel roadways, including gravel shoulders, at least 6 inches below the gravel surface. Install points, located outside paved surfaces, and outside unpaved roadways, flush with the ground. Drill and grout points located on rock outcroppings into solid rock to at least 8 inches deep. If a point falls in a bridge deck or other inaccessible location, contact the Engineer for further direction on installation. Install monument boxes in acc ordance with the MDOT Standard Plan R -11 series . Reinstall old monument boxes if the monument boxes meet the requirements of the MDOT Standard Plan R -11 series. After completion of paving operations, u se coring to place new monument boxes in pavement areas . Use a core diameter no greater than 1 inch larger than the largest diameter of the monument box . Grout the monument box in place using non-shrink grout to the full depth or other material as approved by the Engineer . Do not place the grout in the monument box . Do not place granular material more than 0.1 foot above the bottom of the monument box frame . Install monument boxes so both the box and the cover do not extend above the pavement surface and so no part is more than 0.02 foot below the pavement surface. Compact the material at the base of the box before placing the box. MDOT Standard Specifications for Construction Section 821 8-214 Prevent the reset monument (or cap) from touching the side of the monument box. Position the center of the monument within 0.25 foot of the center of the monument box . Position the top of the monument from 0. 2 to 0.5 foot below the top of the monument box. Before construction, measure the distance from the PLSS C orner position or Alignment Control Point to existing record witnesses to within 0.01 foot to verify and establ ish the Preserve corner position. Document the record of the field-measured distances to the existing witnesses and provide to the Region Surveyor . There must be a total of four witnesses prior to construction, which may require setting new witnesses. To preserve existing PLSS Corner s or Alignment Control P oints, place four temporary straight -line witnesses (non-straight -line witnesses may be used if agreed to in writing by the Region Surveyor prior to the work commencing) before construction begins . Place at least four temporary witness points , two on each side of the roadway, outside the potential construction activity limits . Submit a copy of the field notes or partially completed Land Corner Recordation Certificate for these measurements to the Region Surveyor . Document this information in Section B of the final Land Corner Recordation Certificate. To preserve Other Corners, visit the corner(s) prior to construction to verify and obtain the MCS . Document this inform ation and submit to the Region Surveyor. Reestablish the original position of the PLSS C orner or Alignment Control Point using the temporary straight -line witnesses (or non-straight -line witnesses if agreed to in writing by the Region Surveyor prior to the work commencing), ensuring that the distances match the original measurements . After reestablishment , remeasure and compare the straight -line witnesses (or other approved witnesses) with the original measurements and document the measurements in Section B of the final Land Corner Recordation Certificate. If there are deviations from the original measurements, document the new measurement and the method for resolving the deviation(s ) in Section B of the final Land Corner Recordation Certificate. Reestablish Other Corners using the MCS obtained during verification. Preservation of PLSS Corner s or Alignment Control Points includes documenting at least four newly established or recovered record witness points expected to remain for 5 years after cons truction as described in subsection 821.01.B.4. All witness objects must be visible from the actual corner or point. For Alignment Control Points, list the point under Property Controlling Corner or Property Corner and list the control section, job number, route name, point MDOT Standard Specifications for Construction Section 821 8-215 designation, and stationing in Part A on the Land Corner Recordation Certificate.
821.04 Measurement and Payment
Pay Item Pay Unit Monument Preservation ............................................................................ Each Monum ent Box ......................................................................................... Each Protect Corners ......................................................................................... Each Monument Box , Adj ................................................................................... Each
A.Monument Preservation . The Engineer will measure Monument Preservation by the number of PLSS Corners, Other Corners , and Alignment Control Points . Approval by the Region Surveyor is required for payment of the above listed pay item(s) . The unit price for Monument Preservation includes the cost of the following:
1.Preliminary position verification;
2.Temporary witnessing;
3.Providing and installing new monument and permanent witnessing;
4.Recording the Land Corner Record Certificate in accordance with the Corner Recordation Act (MCL 54.201 et seq. );
5.Providing the required documents;
6.Preparation and administrative work;
7.Traffic maintenance;
8.Cleanup; and
9.Site restoration.
B.Monument Box . The unit price for Monument Box includes the cost of removing the existing monument box and providing and installing the new monument box casting and monument box cover.
C.Any corners or points that are marked as Protect but are changed to Preserve will be paid for as Monument Preserv ation .
D.Protect Corners . The unit price for Protect Corners includes the cost of verifying point positions before and after construction, witnessing before construction, and documentation.
E.Monument Box, Adjust . The unit price for Monument Box , Adj includes the cost of providing and installing monument box adjusting rings and raising or lowering existing monument boxes to a position flush with the final paved grade. The cost includes verifying the pr eliminary position, MDOT Standard Specifications for Construction Section 821 8-216 temporary witnessing, permanent witnessing, recording the Land Corner Record Certificat e in accordance with the Corner Recordation Act (MCL
54.20 1 et seq. ), and providing the required documents.
Source: Michigan Standard Specifications for Construction, 2020 Edition. Pages 771–777 of 1,146.