202.01 129 SECTION 202 – REMOVAL OF STRUCTURES AND OBSTRUCTIONS
202.01 Description ................................ ................................ ................... 129
202.02 Reserved ................................ ................................ ....................... 129
202.03 General ................................ ................................ ......................... 130
202.04 Removal of Bridges, Culverts, and Other Drainage Structures .... 131
202.05 Removal of Pipe ................................ ................................ ........... 133
202.06 Removal of Pavement, Sidewalks, and Curbs Constructed of
Portland Cement Concrete ................................ ........................... 133
202.07 Removal of Underground Storage Tanks ................................ ..... 133
202.08 Water Well Abandonment ................................ ........................... 134
202.09 Method of Measurement ................................ .............................. 136
202.10 Basis of Payment ................................ ................................ .......... 136
DESCRIPTION
202.01 Description
This work consists of removing, entirely or partially, and disposing of all buildings, fences, structures, old pavements, abandon ed pipelines, and other obstructions not designated or permitted to remain, except for obstructions to be removed and disposed of under other contract items. The work also includes backfilling the resulting trenches, holes, and pits, and salvaging designated materials. If the Contract does not include pay items for Removal of Structures and Obstructions, include such work in the prices bid for other items of construction.
202.02 Reserved
202.03 130 CONSTRUCTION REQUIREMENTS
202.03 General
Raze, remove, and dispose of all buildings and foundations, structures, fences, and other obstructions as shown on the Plans. Do not remove utilities and obstructions for which other provisions have been made. Remove material d esignated for salvage in readily transportable pieces, and store the removed pieces at specified locations within the Project limits. Replace with new material, at no additional cost to the Department, those materials designated for salvage that are damag ed during removal, transport, or storage operations. Take ownership of material not designated for the Department’s use, and dispose of such material beyond view from the Project limits. The Department reserves the right to dispose of buildings on any tra ct before they are torn down or removed by the Contractor. If structures designated for removal by the Contract or contain friable asbestos, conduct demolition activities according to TDEC policy and regulations, including providing prior notification to TDEC of all pending demolitions. The Department will remove friable asbestos from other structures to be demolis hed either prior to, or concurrently with, the Work. The Department’s removal of friable asbestos may or may not include complete demolition of the structure. Remove structures, or portions of a structure, remaining after the Department’s removal of asbe stos under the appropriate item or in accordance with 202.01, as applicable. Buildings and other structures that the Plans show as being removed or disposed of by other agencies will not be held as a charge or responsibility of the Contractor, except that the Contractor waives any and all claims for interference, delay, or damage due to their removal or non -removal. Remove foundations of buildings and other structures to a depth of not less than 1 foot below natural ground, except that within construction limits, remove to a depth of not less than 2 feet below subgrade elevation. Break up basement floors to prevent water retention. Fill basements or cavities left by structure removal to the level of the surrounding ground or to s ubgrade elevation within the prism of construction. Compact the material placed in these cavities as specified in 205. 202.04 131 202.04 Removal of Bridges , Culverts , and Other Drainage Stru ctures Do not remove structures in use by traffic until after making arrangements to accommodate traffic. Remove all bridges, culverts, and drainage structures from streams according to the terms and conditions specifie d in the applicable environmental permits, including the TN Construction General Permit. Use highly visible markers to clearly mark permit boundaries and disturbed area limits. Unless otherwise specified or directed, remove portions of bridge substructu res that are located outside a stream to 1 foot below the adjacent ground level or natural stream bottom, or the lowest scour elevation shown on the Plans. For those portions that are located in a stream or wetland, adhere to the permit form of the applic able State and Federal agencies approving the location and plans and authorizing the construction of the bridge. Remove, as necessary, those portions of existing structures that lie entirely or partially within the limits of a new structure to accommodate the construction of the proposed structure. Without causing unnecessary damage, dismantle bridges designated for salvage, and store such material as specified in 202.03. Remove bridge decks according to the following:
1.Where bridge decks are to be entirely removed, but the girders are to remain in service:
a.The Contractor may apply transverse saw cuts to help remove the concrete deck, but the depth of the cut may not exceed:
1.3 inches for decks supported by steel beams or girders;
2.3 inches for decks supported by prestressed concrete beams; and
3.1 inch for decks of cast -in-place hollow box or t -beam bridges.
b.Use pneumatically or electrically operated chipping hammers, not exceeding 60 pounds in weight, to remove the remainder of the slab depth under the cuts. 202.04 132 c. Longitudinal saw cuts may be full depth, but no closer than the following :
1.For decks supported by steel beams or girders, within 1 inch of the widest top flanges;
2.For decks supported by pres tressed beams, within 1 inch of the top flange; and
3.For decks of hollow boxes or t -beam bridges, within 1 inch of the web, unless otherwise shown on the Plans.
2.To remove slab overhangs, the Contractor may use concrete saws to remove the top 1 inch of the slab and pneumatically or electrically operated chipping hammers, not exceeding 60 pounds in weight, to remove the remainder of the concrete. Do not damage transverse slab reinforcing bars.
3.When removing bridge decks as part of a complete bridge demolition, the Contractor may use concrete saws to remove the deck, but the depth of the cuts may not exceed the following:
a.For decks supported by steel beams or girders, the plan depth of slab minus 1 inch.
b.For decks of hollow box or t -beam bridges, if not otherwise shown on the Plans, the Contractor shall submit a plan to the Engineer for approval. Do not use hoe rams, pneumatic shears, pavement breakers, or other heavy equipment to remove slabs where girders or adjac ent slab portions are to remain. Complete blasting or other operations necessary to remove an existing structure or obstruction without damaging new construction. Complete such operations prior to placing the new work, or take adequate precautions to prevent such damage. 202.05 133 202.05 Removal of Pipe Remove, and store when necessary, pipe designated for salvage so that no loss or damage occurs. Replace, at no cost to the Department, sections damaged by negligence or by the use of improper methods.
202.06 Removal of Pavem ent, Sidewalks , and Curbs Constructed of
Portland Cement Concrete As directed, dispose of pavement, base course, sidewalks, curbs, gutters, and similar features constructed of Portland cement concrete designated for removal. If the Plans do not to identify the existence of concrete pavement under asphaltic pavement, do not interpret this as meaning that no concrete is present. Remove and dispose of concrete pavement, par king strip, and base, all with or without bituminous overlay, concrete curb and gutter, sidewalk, driveways, and similar features as follows or as directed:
1.If the items are no more than 2 feet below subgrade elevation, remove and dispose of the items a ccording to 202.
2.If the items are more than 2 feet below subgrade elevation, break them into sections no greater than 2 feet in maximum dimension and leave in place, unless doing so will interfere with succeeding items of construction. Include the cost of this work in the unit price bid for other items of construction.
3.If the items are above subgrade elevation, include their removal and disposal with the work performed under 203.
4.When specified, remove and stockpile ballast, gravel, bituminous pavement, or other pavement materials in accordance with 202.03; otherwise, dispose of such materials as directed.
202.07 Removal of Underground St orage Tanks
A Petroleum Underground Storage Tank refers to any one or combination of tanks including underground piping, which is used or ha s been used to contain petroleum substances and the volume of which is 10% or more beneath the surface of the ground. The Department will remove and dispose of Petroleum Underground Storage Tanks or Tank Systems through its Environmental Consultant. This work will include removal and disposal of pipin g, pumps, and other tank fixtures, 202.08 134 the investigation and testing of the tank(s) for leakage, and backfilling the resulting holes or trenches as shown on the Plans or as approved by the Engineer. The Department’s Environmental Consultant will perform this work according to the Tennessee Petroleum Underground Storage Tank Act, TDEC policies and regulations, the United States Environmental Protection Agency, and local ordinances or statutes governing removal of Underground Storage Tanks. If the Contract inclu des an item for Removal and Disposal of Underground Tanks, before work begins, submit an application for closure of each Petroleum Underground Storage Tank or Tank System to the TDEC, Division of Underground Storage Tanks. In addition, the Contractor shal l:
1.Provide the Engineer with copies of the application for closure, the TDEC’s approval of that application, laboratory test reports, closure notification form, and all pertinent correspondence.
2.Engage a laboratory approved by the TDEC to perform all required sampling and testing for leakage and contamination before and after removal of the tank(s). Upon receipt of written approval from the TDEC, remove the tank(s) according to TDEC regulations. If soil testing either before or after tank removal reveals soil contamination, remove and dispose of the contaminated soil according to TDEC regulations.
3.After removal, take ownership of the tank(s) and tank fixtures unless otherwise shown on the Plans. Ownership of the tank(s) shall not relieve the Contractor of the responsibility of labeling, transporting, and disposing of the tank(s) according to TDEC regulations.
4.After removing the tank(s) and contaminated soil, backfill the hole or trench as necessary with material specified on the Plan s or approved by the Engineer.
202.08 Water Well Abandonment
Locate and seal abandoned water wells, and remove and dispose of pumps, pipe, and other related items not provided for elsewhere in the Contract. Perform all wo rk according to applicable TDEC regulations. Seal abandoned wells as follows: 202.08 135 A. Wells with a Diameter of 1 Foot or Less Retain a licensed driller or pump installer to remove all pumps and related plumbing. Clear the bore hole of all other obstructions. A licensed well driller shall clean the bore hole by drilling, blowing, or bailing as applicable. To disinfect the well, add laundry bleach to the water in the well to equal 1 quart of bleach for each 100 gallons of water. Obtain the number of gallons of wa ter in the well as follows: V = [Dwell - Dswl] x 0.0408 (Dia2) Where: V = volume of water in the well in gallons Dwell = total depth of the well in feet Dswl = depth to static water level in feet Dia = diameter of the well in inches After disinfecting th e well, the licensed well driller shall fill the well using flowable fill. Use bentonite or other approved colloidal reagent as an admixture in an amount equal to 1.5 % by volume of the cement. The flowable fill material shall extend from the bottom of the well to within 5 feet of the final surface where the well is in a roadway cut, or to within 5 feet of the existing ground surface where the well is located under roadway embankment or where the well is outside of the construction limits. Pipe the flowabl e fill directly to the point of application by a tremie or dump bailer to avoid segregation or dilution. Cut off the well casing flush with the top of the flowable fill material.
B.Wells with Diameter Greater than 1 Foot Remove all pumps and related plumbin g, and clear the well of all other obstructions as described in 202.08.A. Disinfect the water in the well by adding 1 quart of bleach for each 100 gallons of water. Compute the amount of bleach to be used as described in 202.08.A. Fill the bottom 5 feet of the well or a depth equal to the depth of the water, whichever is greater, with flowable fill as specified in 202.08.A. Fill the remainder of the well with compacted soil. Remove projecting well casings or walls or cut off 5 feet below the e xisting or proposed ground surface, as applicable. 202.09 136 If flowable fill loss is excessive due to crevices in the borehole wall, use Mineral A ggregate, Type A Base, Grading D, meeting 903.05, to seal the crevices. After sealing the crevices, resume filling with flowable fill. Immediately after sealing the wells, provide an affidavit to the Tennessee Water Supply Division stating the name of the licensed contractor(s) who performed the cleaning and sealing of the wells, the project number, location of the wells, type and sequence of material used, volume of material used, and date completed. COMPENSATION
202.09 Method of Measurement
If the Contract specifies that Removal of Structures and Obstr uctions is on a lump sum basis, the work will include all structures and obstructions encountered within the right -of-way, except for structures and obstructions specified for removal on a unit basis. If the Contract specifies removal of specific items on a unit basis, the Department will measure the quantity of each item by the unit stipulated in the Contract.
202.10 Basis of Payment
The Department will pay for accepted quantities at the contract prices as follows: Item Pay Unit Removal of Struct ures and Obstructions Lump Sum , or Each Removal of Pipe (Size, Sta) Linear Feet Removal of Rigid Pavements, Sidewalks, etc. Square Yard Removal of Undergrounds Tanks (Tract No.________) Lump Sum Removal of Buildings (Tract No. ________ ) Lump Sum Water Wel l Abandonment Lump Sum Payment for Removal of Underground Tanks (Tract No.________) includes locating, drilling, testing, removing, and disposing of Underground Storage Tanks, piping, pumps, and other tank fixtures, any portion of which is on the designate d tract, and hauling, placing, and compacting backfill where required. 202.10 137 If soil testing reveals contamination, the Department will pay for the removal and disposal of contaminated soil under the item for Road and Drainage Excavation (Unclassified) in accordance with 203, provided the volume is 500 cubic yards or less. However, the Department may consider the removal, disposal, and replacement of contaminated soil in excess of 500 cubic yards as Extra Work under 104.02.D and will then pay for such work in accordance with 109.04. Payment for Water Well Abandonment includes all labor, equipment, materials, including flowable fill, and incidentals necessary to complete the work. Payment for removing specific obstruction items, including Removal of Pipe and Removal of Rigid Pavements, Sidewalks, etc., includes the removal of such items; excavation and subsequent backfill incidental to their removal; salvage of materials remove d, their custody, preservation, and storage within the right-of-way; and disposal. The Department will only make payment when payment for all or any par t thereof is provided for in a pay item. 203.01 138 SECTION 203 – EXCAVATION AND UNDERCUTTING
203.01 Description ................................ ................................ ................... 138
203.02 Classification ................................ ................................ ................ 138
203.03 Reserved ................................ ................................ ....................... 141
203.04 General ................................ ................................ ......................... 141
203.05 Undercutting ................................ ................................ ................. 145
203.06 Stripping, Stockpiling, and Placing Topsoil ................................ . 146
203.07 Disposing of Excess or Unsuitable Material ................................ 147
203.08 Shaping and Dressing ................................ ................................ ... 147
203.09 Method of Measurement ................................ .............................. 147
203.10 Basis of Payment ................................ ................................ .......... 151
DESCRIPTION
203.01 Description
This work consists of excavating and grading the roadway (including the removal of slides), borrow pits, waterways, and ditches (including structure inlet and outlet ditches, channels, waterways, and similar features , even if they extend beyond the highway limits); excavating for intersections, approaches, and benches under the side -hill embankments; excavating unsuitable material from roadbed and beneath embankment areas; excavating selected material found in the roadway that is required for specific use in the construction; the construction and removal of detours authorized by the Engineer or otherwise shown on the Plans ; trimming and shaping of all slopes; and disposing of all excavated material. The work also includes all embankment construction as specified in 205, shoulder and ditch construction as specified in 208, and if the Contract includes construction of pavement or other surfacing, Subgrade Construction and Preparation as specified in 207.
203.02 Classification
The Department will classify excavation as follows:
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 138–146 of 1,072.