2-12 Section 204. Removing Miscellaneous
Structures and Materials 204.01. Description This work consists of removing miscellaneous structures and materials to clear the right -of-way, salvaging or disposing of removed materials and backfilling the result ing excavated sites. 204.02. Materials Provide materials in accordance with the following: Sound Earth .......................................................................................... 205 Granular Material Class III .................................................................... 902 204.03. Construction
A.Breaking Down and Removing . Remove structures or portions of structures entirely or to the limits required, including attached parts and connections. Do not damage the remaining portion of an existing structure.
1.Partial Removal . Break down portions of existing miscellaneous structures, not interfering with the new construction, to 3 feet below the pavement surface within the limits of the roadbed and to 1 foot below the finished grade outside the limits of the roadbed.
2.Pavement, Curb, and Sidewalk. Remove pavement, curb, gutter, curb and gutter, sidewalk, downspout headers, and similar structures to an existing joint or to a sawed joint. Saw concrete full depth unless otherwise approved by the Engineer. Provide for proper grades and connections to new work. All anticipated pavement removal operations conducted over utilities and other cr itical areas identified on the plans must be saw cut and the pavement removed full depth in such a manner as to not disrupt or damage these utilities or critical areas. Impact - or vibratory -type equipment is not permitted. Replace adjacent soils or base materials removed with concrete removal operations with similar material approved by the Engineer.
3.Masonry and Concrete Structures. Remove entirely or break down walls, foundations, and similar structures, excluding bridges, culverts, and retaining walls, in accordance with subsection 204.03.A.1.
4.Basement Cleanout . Remove existing backfill material from basements, break -up floors, plug drains, and backfill. MDOT Standard Specifications for Construction Section 204
2-13 5. Structures and Retaining Walls. During the removal operations,
protect the remaining portions of existi ng structures and new work under construction from damage. If the contract requires salvaging part of a steel structure, before dismantling, match-mark with paint the members designated for re-erection. Match -mark pins, nuts, loose plates, and parts to show proper locations. Treat pins, pin holes, and machined surfaces to prevent corrosion. Wire loose parts to adjacent members or pack in match -marked containers. If the contract requires incorporating portions of an existing concrete structure into the new c onstruction, use a concrete saw to make the concrete cuts that will be exposed in the final work. Do not overcut corners; drill and chip to provide square corners. Avoid cutting reinforcing steel wherever possible. Do not cut off steel reinforcement projec ting from the existing concrete structure. Protect projecting steel reinforcement from damage and embed it in the new concrete. Do not use explosives unless the Engineer provides written permission in accordance with subsection 107.17. The Engineer’s written permission does not relieve the Contractor of liability or responsibility for damages resulting from the use of explosives.
6.Culvert Structures. Remove culvert structures or parts of culvert structures required for removal or that interfere with the new construction. For contracts requiring extension or incorporation of existing culvert structures into the new work, remove only enough of the existing structure to allow a connection to the new work. Trim the connecting edges of the existing culvert str ucture to the lines and grades as required without weakening or damaging that part of the structure.
7.Railway Track Work. Remove rails , paving, timber, rubber or concrete crossing panels , ties, track encasement , concrete header foundations , and other relate d items. Leave crushed stone or gravel ballast in place as directed by the Engineer.
8.Guardrail . Remove posts, beam elements, and anchorages, including concrete blocks and steel sleeves, or both; hardware; and other items.
9.Utility Pole . Remove poles, parts, and connections attached to utility poles.
10.Fence. Remove fence fabric, wire, posts, and foundations.
11.Concrete Barrier and Glare Screen . Remove concrete barrier, glare screen, and footings of an existing joint or sawed joint. Backfill as MDOT Standard Specifications for Construction Section 204
2-14 required. Remove barrier footings and post footings entirely. Saw cut
concrete full depth unless otherwise approved by the Engineer. Repair damage to existing manholes, catch basins, bridge piers, and remaining concrete barrier, glare screen, and footings that result s from removal operations. For contracts requiring extension or incorporation of existing barrier footings and/or post footings into the new work, remove only enough of the existing footing to allow a connection to the new work.
B.Disposal of Materials. Assume ownership of removed materials. Without causing damag e, remove materials salvaged for use by the Department, local agency, or others and store outside the construction limits in a location and manner approved by the Engineer. Dispose of materials not incorporated into the new work in accordance with subsection 205.03.P before the Department accepts the project. The Contractor may salvage materials that meet specification requirements and use them in the new work. Dispose of broken concrete, matted together by steel reinforcement, outside the right -of-way. Provide the Engineer with written permission from the property owner of the disposal site.
C.Backfilling. Backfill excavated sites or holes resulting from removals within the influence of the subgrade surface limit with granular material Class III. Place and compact the granular material in accordance with the controlled density method in subsection 205.03.H.4.a. For excavated sites outside the influence of the subgrade surface, backfill with s ound earth in accordance with subsection 205.03.H.4.a. 204.04. Measurement and Payment Pay Item Pay Unit Pavt, Rem ...................................................................................... Square Yard Curb, Rem ................................................................................................. Foot Gutter, Rem ............................................................................................... Foot Curb and Gutter, Rem ................................................................................ Foot Sidewalk, Rem ............................................................................... Square Yard Basement Cleanout ......................................................................... Cubic Yard Track, Rem ................................................................................................ Foot Utility Pole, Rem ....................................................................................... Each Structures, Rem (Structure Identification) ........................................ Lump Sum Structures, Rem Portions (Structure Identification) .......................... Lump Sum Culv, Other than Pipe, Rem ...................................................................... Each Masonry and Conc Structure, Rem .................................................. Cubic Yard MDOT Standard Specifications for Construction Section 204
2-15 Guardrail, Rem .......................................................................................... Foot
Fence, Rem ............................................................................................... Foot Conc Barrier, Rem ..................................................................................... Foot Glare Screen, Rem .................................................................................... Foot
A.General . Unless otherwise required by the contract, the Engineer will measure the structure or material quantities in their original position. The cost of breaking down and removing, sawing, disposing of materials, and providin g, placing, and compacting backfill is included in the unit price for the related pay items. The cost of providing and placing replacement soils or base materials is included in the related pay items. The Department will pay for piling or timber cribs encountered during the removal of structures, but not shown on the plans, as extra work.
B.Pavement, Removal. The limits of Pavt, Rem , as shown on the plans, will be established at the discretion of the Engineer. The Engineer may decide to leave areas in place or remove additional sections to attain the required cross section and base. The Engineer will measure Pavt, Rem in accordance with the following criteria:
1.HMA Pavements and HMA Driveways. The Department will pay separately for the removal of curb, c urb and gutter, or gutter in conjunction with removing h ot mix asphalt (HMA) pavements or HMA driveways.
a.HMA No Greater T han 12 Inches Thick. The Engineer will measure the removal of HMA surface no greater than 12 inches thick overlying a material designated for removal or that is required to remain in place, as HMA Surface, Rem in accordance with subsection 501.04.H. The Engineer will measure the removal of the underlying material separately.
b.HMA Greater Than 12 Inches Thick. The Engineer will meas ure the removal of HMA surface, greater than 12 inches thick, overlying a material designated for removal or that is required to remain in place, as Pavt, Rem . The Engineer will measure the removal of the underlying material separately.
2.Concrete and Masonr y Pavements and Concrete Driveways. The Engineer will measure the removal of concrete and masonry pavements and concrete driveways as Pavt, Rem . If concrete or masonry pavements are encountered under the pavement being removed, the Engineer will measure each type of additionally encountered pavement at the unit price for Pavt, Rem . MDOT Standard Specifications for Construction Section 204
2-16 The Department will consider a concrete overlay a separate
pavement. The Engineer will measure the removal of curb, curb and gutter, or gutter in conjunction with removing concrete or masonry pavement or concrete driveways, as Pavt, Rem .
C.Curb, Removal; Gutter, Removal; or Curb and Gutter, Removal . The Engineer will measure Curb, Rem; Gutter, Rem; and Curb and Gutter, Rem if included as separate pay items and not removed in conjunc tion with pavement or driveway removal along the base of the curb face or along the flowline of the gutter. The unit prices for Curb, Rem; Gutter, Rem; and Curb and Gutter, Rem include the cost of removing downspout headers.
D.Sidewalk, Removal. The unit pri ce for Sidewalk, Rem includes the cost of removing and disposing of sidewalk 6 inches thick or less. The Engineer will measure sidewalk greater than 6 inches thick as Pavt, Rem in accordance with subsection 204.04.B.
E.Basement Cleanout. The Engineer will calculate the volume of Basement Cleanout on the elevation of the existing backfill, the elevation of the floor, and the inside dimensions of the foundation. The Engineer will measure Basement Cleanout outside the pay limits for Excavation, Earth in accordance with subsection 205.04.
F.Track Removal . The Engineer will measure Track, Rem by the length of a single line track. The unit price for Track, Rem includes the cost of removing rails, ties, track encasement, stone or ballast as directed, concre te header foundations , and other related items. The Engineer will measure the removal of pavement from between the rails and on either side of the track as Pavt, Rem in accordance with subsection 204.04.B.
G.Utility Pole Removal. The unit price for Utility P ole, Rem includes the cost of removing and disposing of the pole, attached parts, and connections.
H.Structures, Removal and Structures, Removal, Portions. The unit prices for Structures, Rem and Structures, Rem Portions include the cost of removing and disp osing of miscellaneous structures or portions of structures.
I.Payment for Culvert, Other than Pipe, Removal. The unit price for Culv, Other than Pipe, Rem includes the cost of breaking down, removing, sawing, and disposing of materials and of providing, placing, and compacting backfill. MDOT Standard Specifications for Construction Section 204
2-17 J. Payment for Masonry and Concrete Structures, Removal. The
Department will pay only for Masonry and Conc Structure, Rem if the smallest dimension of the masonry or concrete structures, or parts of masonry or concrete structure s, is at least 12 inches, and the smallest dimension of reinforced concrete structures is at least 8 inches. The Department will pay for the removal of other masonry and concrete structures as Excavation, Earth in accordance with subsection 205.04.
K.Guardrail, Removal. The Engineer will measure Guardrail, Rem along the face of the existing guardrail installation. The unit price for Guardrail, Rem includes the cost of the removal and disposal of multiple beam elements, posts, anchorages, including concrete blocks and sleeves, hardware, and other items.
L.Fence, Removal. The unit price for Fence, Rem includes the cost of removing and disposing of fence fabric, wire, posts, and foundations.
M.Concrete Barrier, Removal . The Engineer will measure Conc Barrier, Rem along the centerline of the barrier. The Engineer will measure the removal of split concrete barrier along the c enterline of the barrier or glare screen on each side, without deductions for bridge piers. The unit price for Conc Barrier, Rem includes the cost of breaking down and removing, sawing, and disposing of materials ; providing, placing, and compacting backfil l; and repairing damage to existing items that are damaged during removal operations. If the pay item Glare Screen, Rem is not included in the contract, the cost of removing glare screen in conjunction with concrete barrier removal is included in the unit price for Conc Barrier, Rem .
N.Glare Screen, Removal. The Engineer will measure Glare Screen, Rem along the centerline of the screen. The unit price for Glare Screen, Rem includes the cost of breaking down and removing, sawing, disposing of materials and repairing existing concrete barrier damaged during removal operations.
O.Bulkheads. The cost of bulkheading abandoned pipes, conduits, or service connections with a diameter no greater than 12 inches and encountered in excavation is included in other related pay items. The Engineer will measure bulkheading abandoned pipes, conduits, or service connections with a diameter greater than 12 inches as Sewer Bulkhead in accordance with subsection 402.03.E.
Source: Michigan Standard Specifications for Construction, 2020 Edition. Pages 138–143 of 1,146.