110 Page 126110 REMOVAL OF STRUCTURES AND OBSTRUCTIONS
110.1DESCRIPTION
This work consists of removal and disposal of buildings, fences, structures, pavements, abandoned pipelines, pipe culverts, other obstructions which are not designated or permitted to remain, and other obstructions which are not removed and disposed of under other items in the contract. This work will also include the salvaging of designated materials and backfilling the resulting trenches, holes, and pits.
110.2MATERIALS (Not Specified)
110.3CONSTRUCTION REQUIREMENTS
Designated salvageable material will be carefully removed, in sections or pieces which may be readily transported, and will be stored at places specified. Unusable perishable material will be destroyed. Nonperishable material may be disposed of outside the limits of view from the project with written permission of the property owner. Pipe will be removed and disposed of as nonperishable material. Basements or cavities left by structure removal will be filled to the level of the surrounding ground and, if located in an area of an embankment or other structure, will be compacted under the same specification as the embankment. In other areas the fill material will be compacted as necessary to preclude undue settlement and will be slightly mounded. Concrete basement floors and similar structures will be broken up to prevent entrapment of water. The Contractor will be responsible for the disconnection and capping of all utility services to the building. Bridges, culverts, and other drainage structures used by traffic will not be removed until satisfactory arrangements have been made to accommodate traffic. The substructures of existing structures will be removed down to the natural stream bottom. Those parts outside the stream will be removed down to 1 foot below the finished ground elevation. When portions of existing structures are within the limits of a new structure, these portions will be removed as necessary to accommodate the construction of the proposed structure. All designated salvageable steel or wood bridges will be dismantled without damage. Structures designated to become the property of the Contractor will be removed from the right-of-way. Blasting or other operations necessary for the removal of an existing structure or obstruction, which may damage new construction, will be completed prior to placing the new work. Pipe to be reset will be removed, transported to the site of installation, and stored so there will be no damage before resetting. The Contractor will be required to replace sections of pipe damaged by negligence at the Contractor’s own expense. In removing curb, gutter, sidewalk, and similar structures, where portions of the existing structures are to be left in the finished work, the old structure will be removed to an existing joint or sawed and chipped to a true line with a vertical face. 110 Page 127Where new PCC pavement or new AC pavement is placed adjacent to existing AC or PCC pavement, the existing pavement will be sawed full depth to a true line with a vertical face. When removing manholes, catch basins, or drop inlets, any functioning sewer lines connected to them will be rebuilt and properly connected. Satisfactory by-pass service will be maintained during construction operations.
110.4METHOD OF MEASUREMENT
When the contract stipulates that payment will be made for removal of obstructions on a lump sum basis, no separate measurement will be made. When the contract stipulates that payment will be made for the removal of specific items on a unit basis, measurement will be made by the unit stipulated in the contract. When removal of pipe is to be made on a unit basis, the quantity will be measured in linear feet. End sections will be measured in linear feet as part of the overall length of pipe unless otherwise stipulated in the contract. Where curb and gutter adjoin Portland cement concrete pavement to be removed, the curb and gutter will be considered as pavement and will be measured as such.
110.5BASIS OF PAYMENT
Removal of obstructions on a lump sum basis will be paid for as per Section 250. Removal of pipe not designated for salvage will be paid for as per Section 250. Variance from plan shown pipe removal quantities, locations, or dimensions will not be cause for adjustment in payment for incidental work. Payment for removal of obstructions on a unit basis will be made under the contract item “Remove *****” Payment for removal of obstructions, by either lump sum or on a unit basis, will be full compensation for removal and disposal of such items, excavation, and subsequent backfill incidental to the removal. Payment will also include salvage of materials removed and their custody, preservation, storage on the right-of-way, and disposal as specified. When the contract does not include bid items for removal of structures and obstructions as set out in this section, the cost for this work will be incidental to the various other contract items. 120 Page 128120 ROADWAY AND DRAINAGE EXCAVATION AND EMBANKMENT CONSTRUCTION
120.1DESCRIPTION
This work consists of excavation, placement, and disposal of material necessary for the construction of the roadway including hauling, watering, and when required, the placement of select subgrade topping.
120.2MATERIALS
A.Unclassified Excavation: All materials except those classified as unclassified/rock excavation; rock excavation; muck excavation; unclassified excavation, digouts; option borrow excavation; contractor furnished borrow excavation; borrow unclassified excavation, and other removal items paid for under Section 110 encountered during the construction of the work, regardless of the nature of the material or manner in which the material is removed, will be considered unclassified excavation. B.Unclassified/Rock Excavation: Unclassified/rock excavation consists of the excavation and placement of both soil and rock when both are anticipated throughout the project area. This item differs from unclassified excavation in that an undetermined quantity of rock will be excavated in addition to the materials included in unclassified excavation. C.Rock Excavation: Rock excavation will consist of a sound, solid mass of mineral matter in place and of such hardness and texture that the mass cannot be loosened or broken down by ripping in a single pass with a tractor mounted hydraulic ripper equipped with one digging point. The ripper and tooth will be of a standard design, adequately sized and used with a large crawler type tractor rated between 370 and 460 net fly wheel horsepower, operating in low gear, with sufficient downward force on the ripper. D.Muck Excavation: Muck excavation consists of the removal and disposal of saturated organic mixtures of soils and organic matter which requires additional work or equipment not normally required for unclassified excavation. E.Unclassified Excavation, Digouts: Unclassified excavation, digouts consists of the removal and disposal of unstable material below an existing surface on which surfacing material is to be placed. F.Option Borrow Excavation: Material, furnished by the Department, from a pit or other source. The Contractor may use this material at the Contractor’s option. G.Contractor Furnished Borrow Excavation: Material, furnished by the Contractor, from a pit or other source. H.Borrow Unclassified Excavation: Material, furnished by the Department, from a pit or other source. The Contractor must use this material. I.Select Subgrade Topping: Sources of selected subgrade topping material will be confined to the areas specified. The upper 6 inches of sodded areas, materials with high humus or silt content, and outwashed material in poorly drained areas will not be acceptable.