- 115 - SECTION 203 -- REMOVAL OF STRUCTURES AND OBSTRUCTIONS
203.01 Description
1.General:
a.This work consists of clearing all tracts, the removal and disposal of all buildings, lighting, tra ffic signals, fences, manholes, gutters, curbs, structures, headwalls, culverts, bridges, pavements, abandoned pipelines or utilities, and other obs tructions not designated to remain. It includes salvaging the designated ma terials and backfilling the resulting cavities.
b.Removal of existing roadway lig hting, sign lighting, and traffic signals shall be accomplished as shown in the contract.
2.Unless structures interfere with the work, they shall not be removed until the new structures replacing them are complete.
3.Lead Plate Recycling: a. If there are lead plates under existing bearings, the lead plates are considered to be “recyclable materials” and “scrap material” in accordance with Title 128, Rules and Regulations Governing Hazardous Waste Management in Nebraska. Lead plates must be recycled in accordance with the requirements of the above noted rules and regulations and as follows.
1.The lead plates must be recycled at a legitimate recycling facility of scrap metal. Disposal of th ese lead plates by any other means is not allowed. The Contractor shall pr ovide documentation to the Engineer that these lead plates have been delivered to a recycling facility. This documentation shall include the following:
i.Number of lead plates delivered to the recycling facility. (ii) Total weight of t he lead plates delivered to the recycling facility. (iii) Name and address of the recycling facility accepting the lead plates. (iv) Date the lead plates were shipped to the recycling facility.
v.Shipment ticket documenting receipt of the lead plates by the recycling facility.
b.The contractor shall provid e for the protection, health and safety of his workers during the handling of the lead plates. This shall be done in accordance with the Occupational Safety and Health Administration (OSHA) and Environmental Protecti on Agency (EPA) standards, and all applicable federal, state, and local regulations.
4.Building Removal a. It shall be the responsibility of the Contractor to determine if any of the buildings to be removed have materials containing asbestos. If it is determined that some or all of the buildings contain asbestos, the asbestos shall be removed prior to the building removal. All asbestos shall be removed in accordance with State of Nebraska Health and Human
203.01 Removal of Structures and Obstructions
- 116 - Services Department, Environmental Protection Agency, and the Nebraska Department of Environmental Quality regulations. A Contractor trained and certified in asbestos handling shall perform all asbestos removal and handling operations.
b.The work of determining if any of the buildings contain asbestos shall be considered subsidiary to the item “Remove Building at _____.”
c.The work of asbestos abatement will be paid for as “Extra Work” as described in Subsection 104.04.
203.02 Construction Methods
1.The Contractor shall excavate as necessary to perform any removal.
2.a. All nonsalvageable material shall become the property of the Contractor and must be prompt ly removed from the project.
b.When a portion of the existing structure is to be retained, the Contractor shall not damage the retained portion during construction operations.
c.The Contractor shall first complete all removal operations which might endanger any new construction.
3.Preparation of Existing Structure:
a."Preparation of St ructure at Station _____" includes removing any part of the existing structure a nd using it in the new structure as indicated in the contract and the work described in the contract as preparatory to adapt a structure to an extension or reconstructed structure.
b.The connecting edges of the existing structure shall be cut, chipped, and trimmed to the required li nes and grades without weakening or damaging that part of the structure to be retained. All existing reinforcing steel which is encountered shall be cl eaned, straightened, and extended into the new work as shown in the contract.
c.If the Contractor elects not to cut, chip and trim to the required lines and grades, the Contra ctor shall drill and grout tie bars using approved methods.
4.Pavement Removal:
a.The Contractor shall re move all pavement identified for removal in the contract.
b.Materials designated for Department salvage shall be stockpiled at designated locations without contaminating the material with dirt or foreign materials.
c.Concrete pavement, sidewalks, curbs, gutters, and similar structures to be left in place shall be sawed to a true vertical line or removed to an existing joint.
5.Brick surfacing removal requires the Contractor to remove the brick surface, all foundation struct ures, base courses, and sand beds. Removal of Structures and Obstructions 203.02 - 117 - 6. Building tracts:
a.The Contractor shall clear al l building tracts. This shall include all work required to remove all foundations, basement walls, driveways, walks, and other miscellaneous items en countered within the specified tract and disposing of all materials.
b.Basement walls shall be removed to an elevation at least 2 feet (600 mm) below finished ground elevation, the concrete floors broken into pieces of approximately 4 square feet (0.4 m2) and left in place, and the cavity backfilled with approved material.
c.Building removal responsibilities shall include disconnecting all sewers and other utilities encountered and plugging the sewer lines with concrete.
7.The Contractor shall remove all other miscellaneous structures encountered to at least 2 feet (600 mm) below finished ground elevation.
8.Contractor Removal of Br idges, Culverts, and Other Drainage Structures:
a.The Contractor shall remove abutments, piers, bents, and walls entirely or dismantle them to an elevation at least 2 feet (600 mm) below the subgrade, slope face, or original ground level, whichever is lowest. Structures in stream beds shall be remo ved as designated in the contract or 2 feet below the stream bed.
b.Bridges and culverts designat ed in the contract or otherwise ordered to be salvaged shall be dismantled without damage, match-marked if appropriate, cleaned, and transport ed for storage at designated locations.
c.The Contractor shall burn a part at the joints or otherwise demolish bridge trusses that the Engin eer determines are unfit for reuse on a public road.
d.When an unforeseen structur e is encountered within the LOC, the Contractor shall:
i.notify the Engineer. (ii) remove the unforeseen structure. e. The Contractor shall remove and dispose lead-based paint according to current regulations.
9.Concrete designated for use as riprap shall be broken into pieces not to exceed 330 lb. (150 kg) with no dimension that shall be more than 4 times the least dimension. The material shall be stockpiled or placed at designated locations.
10.Sewers: a. When salvaging or removing sewers, manholes, catch basins, and inlets, the Contractor shall re build and reconnect any live sewers associated with the removal.
b.Sanitary sewer service shall be maintained during construction operations. If necessary, the Contractor shall install and maintain a bypass service during construction.
203.02 Removal of Structures and Obstructions
- 118 - c. When manholes, catch basins, or inlets are to be abandoned, the Contractor shall plug pipe connecti ons with concrete of the same class as that being used in the cons truction of new structures.
11.The Contractor's removal of di scharge structures shall include the concrete and metal flumes, concrete and metal slope drains, and the concrete discharge basin.
12.Retaining Walls: a. Retaining walls shall be removed as indicated in the contract.
b.When only a portion of a wa ll is removed, the ends of those portions remaining will be modified, trimmed, and dressed to provide a finished appearance.
13.The Contractor shall cut off or drive abandoned piles as designated in the contract or 2 feet below the finished grade or stream bed.
14.Roadway Lighting, Sign Lighting, And Traffic Signals: a. Removal of existing roadway lig hting, sign lighting, and traffic signals shall include the following:
1.Disassembling the luminaires or signals from the mast arms.
2.Disassembling the mast arms from the poles. (3) Disassembling and removing the poles and their foundations.
4.Removing controllers.
5.Removing all associated and connecting wires, cables, pull boxes, and conduits. Underground conduit and cable may be abandoned in place.
b.Unless indicated otherwise, foundations, pull boxes, control centers, and all lighting, sign lighting, and traffic components indicated for removal in the contract shall become the property of the Contractor. These items must be removed from the project. Concrete foundations must be removed to at least 2 feet (600 mm) below finished grade. Anchor bolts and reinforcing steel are considered part of the foundation. T he Contractor may remove the foundation as an entire unit.
c.The contract will indicate w hether existing items are to remain in place, be salvaged, or be dispos ed of. Salvaged items are to be transported to the location shown in the contract.
d.After the removal has been completed, the Contractor shall backfill the excavation to the condition of the surrounding area.
e.Salvaged Material Preparatio n. The material the Contractor is to salvage for the State shall be carefully disassembled and prepared as indicated below:
1.Poles shall be clean, free from internal wiring, and have hand-hole covers and pole caps in place. Mast arm bolts shall be attached to the pole shafts.
2.Luminaires shall be clean and have their openings covered with duct tape. Photo controls shall not be salvaged. Removal of Structures and Obstructions 203.02 - 119 - (3) Transformer bases shall have covers in place and all associated bolts, nuts, and washers attached.
4.Power foundations shall be thoroughly cleaned before delivery and shall have the attachment bolts in place.
f.Salvaged Material Disposition: (1) All components shall be delivered to the Department's storage area identified in the contract.
2.The Contractor shall contact the Department storage area two work days prior to delivery and request delivery instructions.
3.The Contractor will not be allowed to "off load" any materials that are not properly prepared for storage.
4.It shall be the Contractor's responsibility to protect the salvaged materials until delivery to the State storage area or other approved destination. If the Engineer determines that the Contractor damaged salvaged materials, the Contractor sha ll dispose of the materials and replace the damaged materials with new materi als at no cost to the Department.
15.Signs, Sign Support Structures, and Foundations:
a.The Contractor shall remo ve signs, sign support structures, and their foundations.
b.This work shall include the removal and disposal of the existing signs, luminaires, support structures, and foundations.
c.The signs and sign luminaires shall be removed from the structure and delivered to the Department storage area indicated in the contract or as directed by the Engineer.
d.All overhead structures scheduled for removal shall become the property of the Contra ctor, and the Contractor shal l dispose of the items.
e.Foundations:
1.The exposed portion of the foundations shall be removed to a minimum depth of 2 feet (600 mm) below finished ground elevation.
2.All debris from the foundation removal shall be disposed of as directed by the Engineer.
3.After the removal has been completed, the excavation shall be filled and the entire surface sh all be restored to the condition of the surrounding area.
16.Ground Mounted Signs and Posts: a. The Contractor shall remove signs and posts. b. This work shall include the removal of the ground-mounted signs and their posts as indicated in the contract and delivering both the posts and signs to the indicated Department storage area.
c.Footings:
1.The footing shall be removed to a minimum depth of 2 feet (600 mm) below finished ground elevation.
2.All debris from the footi ng removal shall be disposed of by the Contractor.
203.02 Removal of Structures and Obstructions
- 120 - (3) After the removal has been completed, the area shall be restored to the condition of the surrounding area.
17.Overhead Signs:
a.The Contractor shall remove signs as indicated in the contract.
b.This work involves the removal of existing signs and luminaires on the overhead structures as indicated in the contract. The existing signs and luminaires shall be removed and delivered to the Department storage area as directed by the Engineer.
c.Conduits and wires shall remain in place to accommodate the new luminaires, where applicable, or be tied off at the power source.
18.All structural backfilling which forms any portion of the roadbed embankment or subgrade shall be done as described in Sections 205 and 702.
19.The Contractor shall backfill basements or cavities left by any structure removal to the surrounding ground level, and the cavities shall be backfilled and compacted, as described in Subsection 205.03, to a stiffness as defined by a deflection target val ue established by the Engineer and at optimal moisture as determined by NDOT T 99.
20.The Contractor may use existing structures during construction, but material which is to be salvaged shall not be damaged.
21.Disposal of Materials: a. The price bid for the removal of structures will include all right and title to any structure removed and not salvaged.
b.Disposal Methods: (1) The Contractor shall remove from the project all disposed materials that will not be salvaged.
2.Removed materials shall not be stored within 1,000 feet (300 m) of the project right-of-way unless they are not visible from the traveled way.
3.Materials shall not be burned, buried, or wasted in a stream channel.
c.Uncontaminated broken concrete, bituminous rubble, and masonry rubble may be placed in the toe of slopes and berms; above the ordinary high water mark and away from wetlands; and at least one foot (300 mm) below finish grade as directed by the Engineer.
22.The Contractor shall clean all salvaged materials to the Engineer's satisfaction.
203.03 Method of Measurement
1.a. All removal work will be measured based on the original position of the items.
b.The excavation cost shall be included in the removal bid item.
c.The excavation volume ne cessary for any removal shall be deducted from the appropriate excavation bid item. Removal of Structures and Obstructions 203.03 - 121 - d. The excavation required for "Removal of Driveway Culvert Pipe" that is to be salvaged shall not be included in the removal bid item. "Removal of Driveway Culvert Pipe" is the only bid item where the required excavation is included in the appropriate roadway excavation bid item.
2.Pavement Removal:
a.The removal of all pavement structure, including base courses, gutters, intersections, and driveways will be surface measured. The unit of payment will be square yards (square meters). Driveway, intersection, and pavement removal shall include the underlying base course regardless of thickness or number of layers as shown in the contract.
b.Where the curb is integral with the pavement, surface course, or base course, the removal of curbs will be surface measured in square yards (square meters) as part of t he pavement, surface course, or base course.
c.The length of curb and combination curb and gutter which is separate from concrete pavement, surface course, or base course will be measured for payment in linear feet (meter).
3.Measurements for curbs or combination curb and gutter will be made along the front face of the curbs.
4.Removing sidewalk will be surface measured for payment. The unit of payment will be the area in square yards (square meters).
5.Building removals, regardless of size, are measured by the each. 6. Removal of concrete and masonry structures, including retaining walls, steps, discharge structures, and concrete headers are measured by the each.
7.The length of fence removed wi ll be measured for payment in linear feet (meter).
8.Manhole, catch basin, and inlet removal is measured by the each, including all attached parts and connections.
9.Guardrail post removal, when the posts are not to be reset, will be measured by the each.
10.Delineator removal is measured by the each. The delineator includes the post, the reflecto r, and the delineator base/anchor.
11.The length of electrical cable or conduit removed will be measured for payment in linear feet (meter).
12.Removal of traffic signal heads, traffic control sign s, controllers, lighting control centers, poles, signs, structures and foundations, sign posts, and lighting structures will be measur ed as single units by the each.
13."Remove Traffic Signal at Station_____" is measured as a lump sum.
14."Remove Lighting System at Stat ion_____" is measured as a lump sum.
15."Remove Sign Lighting at Station_____" is measured as a lump sum.
16.Both wooden and metal pole removal is measured by the each.
203.03 Removal of Structures and Obstructions
- 122 - 17. Bridges and other structures are removed under the pay item "Remove Structure at Station _____", and the unit of measurement is by the each.
18."Preparation of Structure at St ation _____" is measured by the each.
19.Pipe culvert removal will be measured as follows: a. When shown in the contract and the Engineer determines the pipe culvert to be salvageable:
1.Payment will be made for the length of pipe removed, regardless of pipe diameter. Transportation of the removed pipe to the storage location shown in the proposal wi ll be subsidiary to the pipe removal.
2.Payment will be made fo r any required pipe removal excavation in accordance with Section 701 and Subsections 702.04 and
702.05 No deduction will be made for the culvert or existing headwall.
b.When the Engineer determines the existing pipe culvert to be nonsalvageable in the contract or prior to commencement of work:
1.Payment will be made for the excavation volume as "Excavation for Pipe Culverts and Head walls". See Subsections 702.04 and 702.05.
2.No additional payment will be made for the length of pipe removed.
3.Removed, nonsalvageable pipe becomes the property of the Contractor.
c.(1) "Remove Driveway Culvert Pipe" is only measured when the contract indicates the Contra ctor is to salvage the pipe.
2."Remove Driveway Culvert Pipe" is measured by the linear feet (meter).
3.Excavation for removing driveway culvert pipe is not measured.
20.The overlap of a pipe removal excavation volume with an excavation volume required to construct new work will be deducted by subtracting the overlapping pipe removal excavation volume from the new work excavati on volume.
21."Clearing Tracts _______" will be measured for payment by the each for the removal of all items wi thin the tract except vegetation. Vegetation removal is considered to be part of "Clearing and Grubbing".
22."Break Concrete Pavement" will be surface measured for payment by the square yard (square meter).
23.Both removal and salvage of sewer pipe will be measured by its length in linear feet (meter), regardless of diameter.
24.Underground tank removal is measured by the each. 25. Bridge removal is measured as a lump sum or by the each as identified in the bid Schedule of Items.
26.Removal of retaining walls is measured by the linear foot (meter). Removal of Structures and Obstructions 203.04 - 123 - 27. Removing miscellaneous items which are included in the contract, but not specifically covered in this Subsection, will be paid for by the each.
28."Sawing Pavements" is measured by the length of the cut in linear feet (meter). It includes cuts through pavements, driveways, sidewalks, and other similar flatwork.
203.04 Basis of Payment
1.Pay Item Pay Unit Break Concrete Pavement Square Yard (SY) [Square Meter (m2)] Clear Tract _____ Lump Sum (LS) Excavation for Pipe, Pipe -Arch Cubic Yard (CY) Culverts, and Headwalls [Cubic Meter (m3)] Preparation of Structure at Station _____ Each (ea) R e m o v e _ _ _ _ _ E a c h ( e a ) , L i n e a r F o o t ( L F ) [Meter (m)], Square Yard (SY), [Square Meter (m 2)] C u b i c Y a r d ( C Y ) , [ C u b i c M e t e r ( m3)] or L u m p S u m ( L S ) Remove _____ Cable Linear Foot (LF) [Meter (m)] Remove _____ Pole Each (ea) Remove Asphalt Surface Square Yard (SY) [Square Meter (m2)] Remove Base Course Square Yard (SY) [Square Meter (m2)] Remove Brick Surface Square Yard (SY) [Square Meter (m2)] Remove Building _____ Each (ea) Remove Combination Curb and Gutter Linear Foot (LF) [Meter (m)] Remove Concrete Ditch Liner Square Yard (SY) [Square Meter (m2)] Remove Concrete Foundation Square Yard (SY) [Square Meter (m2)] Remove Concrete Median Surfacing Square Yard (SY) [Square Meter (m2)] Remove _____ Conduit Linear Foot (LF) [Meter (m)] Remove _____ Controller Each (ea) Remove Culvert Pipe Linear Foot (LF) [Meter (m)]
203.04 Removal of Structures and Obstructions
- 124 - R e m o v e C u r b L i n e a r F o o t ( L F ) [Meter (m)] Remove Delineator Units Each (ea) Remove Driveway Square Yard (SY) [Square Meter (m2)] Remove Driveway Culvert Pipe Linear Foot (LF) [Meter (m)] Remove Fence Linear Foot (LF) [Meter (m)] Remove _____ Foundation Each (ea) Remove Gutter Square Yard (SY) [Square Meter (m2)] Remove Headwalls from Culverts Each (ea) R e m o v e I n l e t s E a c h ( e a ) Remove Lighting Control Center Each (ea) Remove Lighting System at _____ Each (ea) Remove Lighting Unit Each (ea) R e m o v e M a n h o l e E a c h ( e a ) Remove Pavement Square Yard (SY) [Square Meter (m2)] R e m o v e P u l l B o x E a c h ( e a ) Remove Retaining Wall Linear Foot (LF) [Meter (m)] Remove Sewer Pipe Linear Foot (LF) [Meter (m)] R e m o v e S i g n E a c h ( e a ) Remove Sign and Post Each (ea) Remove Sign Lighting at _____ Each (ea) Remove Sign, Structure, and Foundation Each (ea) Remove Structure at Station _____ Each (ea) Remove Traffic Signal at _____ Each (ea) Remove Traffic Signal Head Each (ea) Remove Underground Tank Each (ea) Remove Walk Square Yard (SY) [Square Meter (m2)] Salvage Sewer Pipe Linear Foot (LF) [Meter (m)] Sawing Pavement Linear Foot (LF) [Meter (m)] Removal of Structures and Obstructions 203.04 - 125 - 2. The pay quantities for removal of structures and obstructions will be based on the quantities shown in the contract unless changes are authorized.
3.The State may sell or remove buildings prior to the start of construction. If buildings are sold or removed before this date, the item "Remove Building" will be deleted from the final pay quantities. The Contractor shall still perform the work of clearing the tract.
4.The State may "strip salvage" buildings by removing doors, windows, and fixtures before the construction start date. When this occurs, the Contractor will be paid the full bid price for the building removal.
5.Sawing pavement is paid for as an "established" contract unit price which is shown in the bid proposal "Schedule of Items."
6.Excavation for removing driveway culvert pipe is subsidiary to Remove Driveway Culvert Pipe.
7.Payment is full compensation for all work described in this Section. Separate payment for excavating, backfil ling, compacting cavities resulting from the removal of structures or ob structions, and transporting salvaged materials to designated storage locations will not be made. - 126 - SECTION 204 -- TEMPORARY WATER POLLUTION CONTROL
204.01 Description
1.This Section defines some te mporary measures and construction practices the Contractor shall use to prevent soil erosion and avoid water pollution.
2.The Contractor shall exerci se every reasonable precaution throughout the life of the contract to prevent silt ing of rivers, streams, impoundments (lakes, reservoirs, etc.), the project site, and adjacent property. Construction of drainage facilit ies, as well as performance of other contract work which will contribute to t he control of siltatio n, shall be carried out in conjunction with earthwork oper ations or as soon thereafter as is practicable.
3.a. The Contractor shall take sufficient precautions to prevent pollution of streams, lakes, reservoirs , the project site, and adjacent property with petroleum products, chemicals, or other harmful materials.
b.The Contractor shall conduct and schedule the operations so as to avoid interference with movement of migratory fish.
c.The Contractor shall comply wi th all applicable statutes relating to pollution of streams and fish and game regulations.
4.All construction debris shall be disposed in a manner that it cannot enter any waterway. Waste excavation from the roadway, channel changes, cofferdams, etc., shall not be deposited in or so near to rivers, streams, or impoundments that it will be washed away by high water or runoff.
5.The Contractor's erosion contro l measures shall be continued until the permanent drainage facilities have been constructed and the grass on seeded slopes is sufficiently establishe d to be an effective erosion deterrent or until tentative acc eptance of the work.
6.All erosion control measures s hall be properly maintained by the Contractor.
7.All erosion resulting from t he Contractor's operations and the elements must be corrected by the Contra ctor at no additional cost to the Department.
8.The Contractor shall explain hi s/her erosion control plans at the preconstruction conference.
204.02 Limitation of Operations
1.The maximum exposed surface area for the Contractor's operations in excavation, borrow, and embankment is 18 acres (72,800 m2) plus an equal area of clearing and grubbing/large tree removal. A written request for an increase in the maximum exposed surface area may be approved by the Engineer. This approval will be based on the soil, moisture, seasonal conditions, the Contractor’s op eration, or other conditions.
2.a. The Engineer shall have the authority to reduce the maximum exposed surface area when any of the following conditions warrant:
1.Soil and moisture conditions are such that erosion is probable.
2.Seasonal conditions may force extended delays.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 149–159 of 1,048.