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Earthwork (200-299)

201Section 201

CO · 2023 Standard SpecificationsBook pages 187188View official source ↗

201.01 201-1

Division 200

EARTHWORK CLEARING AND GRUBBING DESCRIPTION

201.01 This work consists of clearing, grubbing, removing, and disposing of vegetation and

debris within the limits of the right of way, easement areas, borrow pits, and other areas shown in the Contract or required by the work. Vegetation and objects designated to remain shall be preserved free from injury or defacement. CONSTRUCTION REQUIREMENTS

201.02 The Engineer will designate all trees, shrubs, plants, and other objects to remain. Every

object that is designated to remain and is damaged shall be repaired or replaced as directed at the Contractor’s expense. Clearing and grubbing shall extend to the toe of fill or the top of cut slopes, unless otherwise designated. All surface objects, trees, stumps, roots, and other protruding obstructions not designated to remain shall be cleared and grubbed. In areas to be rounded at the tops of backslopes, stumps shall be removed to at least 2 feet below the surface of the final slope line. Except in areas to be excavated, all holes resulting from the removal of obstructions shall be backfilled with suitable material and compacted per subsection 203.06. Burning of perishable material will not be permitted without the written approval of the Engineer. If permitted, perishable material shall be burned under the constant care of the Contractor , at times and in a manner that will not endanger the surrounding vegetation, adjacent property, or objects designated to remain. Burning shall be done per applicable laws and ordinances. No material or debris shall be disposed of within the project limits without the written permission of the Engineer. Material or debris that is disposed of within the project limits shall be buried to a depth of at least 2 feet and the surface shall be res haped to match the adjacent ground line. The Contractor shall make all arrangements to obtain written permission from property owners for disposal locations outside the limits and view of the project. Copies of this written agreement shall be furnished to the Engineer before the disposal area is used. All cleared merchantable timber shall be removed from the project and shall become the property of the Contractor. Branches on trees or shrubs shall be removed as directed. Branches of trees extending over the roadbed shall be trimmed to give a clear height of 20 feet above the roadbed surface. All trimming shall be done per good tree surgery practices. The Contractor shall clear and grub the areas within the excavation or embankment grading limits and shall include the removal from the ground of brush, roots, sod, grass, residue of agricultural crops, sawdust, and other vegetable matter. See subsection 208.04(e) for disturbed 201.04 201-2 area limits. METHOD OF MEASUREMENT

201.03 Measurement will be by one of the following methods:

Area Basis. The work to be paid for will be the number of acres acceptably cleared and grubbed, including scalping, within the limits shown on the plans or staked by the Engineer. Lump Sum Basis. When the Contract contains a clearing and grubbing lump sum item, no measurement will be made. BASIS OF PAYMENT

201.04 The accepted quantities of clearing and grubbing will be paid for at the contract

unit prices as follows: Area Basis. The quantities will be paid for at the contract unit price bid per acre for each pay item that appears in the bid schedule. Lump Sum Basis. When the bid schedule contains a lump sum item, the lump sum price so bid will be paid and shall be full compensation for clearing and grubbing the entire project. Clearing and grubbing beyond the limits designated under this item will be paid for as Extra Work per subsection 104.03. Payment will be made under: Pay Item Pay Unit Clearing Acre, Lump Sum Grubbing Acre, Lump Sum Clearing and Grubbing Acre, Lump Sum Exclusions. When the bid schedule does not contain an estimated quantity or a lump sum item for clearing and grubbing, the work will not be paid for separately, but shall be included in the work. 202.01 202-1 SECTION 202 REMOVAL OF STRUCTURES AND OBSTRUCTIONS DESCRIPTION

202.01 This work consists of the removal and disposal of trees, slope and ditch protection,

abandoned utility services, curb, gutter , pipes, sidewalk , structures, bridges or parts of bridges, railroad appurtenances , traffic control devices , impact attenuators, guardrail , fences, foundations , detours, pavements, pavement markings, and all other obstructions that are not designated or permitted to remain. It shall also include salvaging, stockpiling and loading salvable materials, sandblasting, plugging structures, cleaning culverts, and sawin g and cutting to facilitate controlled breaking and removal of concrete and asphalt to a neat line. Except in areas to be excavated, the resulting trenches, holes , and pits shall be backfilled. This work also consists of plugging and abandoning water wells as designated in the Contract. Materials removed and not designated in the Contract to be salvaged or incorporated into the work shall become the property of the Contractor. This work consists of removal of the existing bridge(s) at the locations shown in the plans. Bridge removal shall consist of the complete removal of all superstructure and substructure elements including caissons and piling to a depth of at least two (2) f eet below finished grade unless otherwise shown on the plans. Time limitations for the work shall be as shown in the contract and/or plans. CONSTRUCTION REQUIREMENTS

202.02 General. The Contractor shall raze, remove, and dispose of all structures and

obstructions that are identified on the project, except utilities, structures and obstructions removed under other contractual agreements, and salvable material designated to remain the property of the Department. Basements and other cavities left by structure removal shall be filled to the level of the surrounding ground with suitable material and, if within the construction limits, shall be compacted per subsection 203.06. Bridges, culverts, and other drainage structures shall not be removed until satisfactory arrangements have been made to accommodate traffic and drainage. Blasting or other operations used to remove existing structures or obstructions, which may damage new construction, shall be completed before placing the new work. Where portions of structures are to be removed, the portions designated to remain shall be prepared to fit the new construction and shall be protected from damage. All damage to structures designated to remain in place shall be repaired at the Contractor's expense. Method of repair shall be approved by the Engineer. Sawing of concrete shall be done to a true line, with a vertical face, unless otherwise specified. The minimum depth of a saw cut in concrete shall be 2 inches or to the depth of the reinforcing steel, whichever occurs first. Removed concrete and asphalt material may be used to construct embankments per subsection 203.07.

Source: Colorado Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 187188 of 943.