216Removals for Bridge Structures

216.10.1 Description. This work shall consist of removing and disposing of existing bridge structures as shown

on the plans or as directed by the engineer.

216.10.2 Removal Requirements. The entire structure, including all substructure units, shall be removed to an

elevation 2 feet below the finished ground line or streambed. Any portion of an existing structure below the ground line that interferes with the construction of the new structure shall be removed. Existing structures used for handling temporary traffic shall not be removed until the replacement structure is open to traffic. Notification of demolition shall be made in accordance with Sec 202.40.1.1.

216.10.3 Method of Measurement. No measurement will be made for removal of bridges.

216.10.4 Basis of Payment. Removal of bridges will be paid for at the contract lump sum price.

SECTION 216.20 SCARIFICATION OF BRIDGE DECK.

216.20.1 Description. This work shall consist of scarifying the bridge deck to the depth shown on the plans or

as directed by the engineer.

216.20.2 Removal Requirements. The bridge deck shall be uniformly scarified to the depth as shown on the

plans. Excessive tearing of the deck surface shall require immediate correction. Over areas of half-sole repair and full depth repair, the scarified removal depth may be coincidental with the repair removal operation. The scarification shall produce a very rough texture that is acceptable to the engineer as a bondable surface for the new concrete wearing surface or as a starting profile for total surface hydro demolition. The scarifying process shall not produce a polished or slick surface. Any epoxy patches encountered shall be completely removed to sound, natural concrete.

216.20.3 Method of Measurement. Final measurement of scarification of bridge deck will not be made except

for authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, scarification of bridge deck will be measured to the nearest square yard based on measurement longitudinally from end of slab to end of slab and transversely from roadway face of curb to roadway face of curb. The revision or correction will be computed and added to or deducted from the contract quantity.

216.20.4 Basis of Payment. Scarification of bridge deck will be paid for at the contract unit price.

SECTION 216.30 SEAL COAT AND WEARING SURFACE REMOVAL.

216.30.1 Description. This work shall consist of the complete removal and disposal of the unbonded seal coat,

bonded seal coat, polymer wearing surface, asphalt wearing surface and concrete wearing surface from the bridge deck as shown on the plans or as directed by the engineer.

216.30.2 Removal Requirements.

216.30.2 1 All material and residue shall be removed. Staining will be permitted. The equipment and procedures

used for removal shall be such that no damage will be done to the existing concrete deck. Any epoxy patches encountered shall be completely removed to sound, natural concrete. Excessive tearing of the deck surface shall require immediate correction.

216.30.2 1.1 When a concrete or asphalt wearing surface is to be installed, prior to the removal of the wearing

surface, the contractor shall determine an average depth of the existing wearing surface with sufficient examination at multiple locations to permit an accurate determination of any required supplementary wearing surface material for the new wearing surface.

216.30.2 2 When a concrete wearing surface is to be installed, the removal of the wearing surface plus the

amount of deck as shown on the plans or to the adjusted depth described in Sec 216.30.2.2.1 shall produce a very rough texture that is acceptable to the engineer as a bondable surface for the new concrete wearing surface or as a starting profile for total surface hydro demolition. The removal process shall not produce a polished or slick surface.

216.30.2 2.1 Prior to removal of the wearing surface, the contractor shall verify the depth of the top mat of

reinforcing steel within the deck. The cold milling depth shall be reduced to avoid damage to the reinforcing steel. Any reinforcing steel damaged by the milling operation shall be repaired or replaced at the contractor’s expense.

216.30.3 Method of Measurement.

216.30.3 1 Final measurement of the removal of seal coat or wearing surface will not be made, except for

authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, removal of bonded seal coat, polymer wearing surface, asphalt wearing surface and concrete wearing surface will be measured to the nearest square foot based on measurement longitudinally from end of slab to end of slab and transversely from roadway face of curb to roadway face of curb. The revision or correction will be computed and added to or deducted from the contract quantity. No measurement will be made for removal of unbonded seal coat.

216.30.4 Basis of Payment.

216.30.4 1 The accepted quantities of the removal of seal coat or wearing surface will be paid for at the contract

unit price, except that all costs incurred by the contractor while removing the unbonded seal coat will be considered completely covered in the contract unit price for other items. SECTION 216.40 REMOVAL AND STORAGE OF EXISTING BRIDGE RAIL.

216.40.1 Description. This work shall consist of disassembling, removing, transporting and storing existing

bridge rails at the location specified in the contract documents or as directed by the engineer.

216.40.2 Storage Requirements. Storage shall be by stacking in a neat and orderly manner on contractor

furnished timbers. The contractor shall notify and make arrangements with the engineer a minimum of 24 hours prior to commencing the storage of these materials. The contractor shall be responsible for damage to or loss of any part, including necessary repair or replacement, until storage has been acceptably completed.

216.40.3 Method of Measurement. Final measurement of the removal and storage of existing bridge rail will

not be made except for authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, removal and storage of existing bridge rail will be measured to the nearest linear foot from end of rail to end of rail. The revision or correction will be computed and added to or deducted from the contract quantity.

216.40.4 Basis of Payment. Removal and storage of existing bridge rail will be paid for at the contract unit

price. SECTION 216.50 REMOVAL OF EXISTING BRIDGE DECK.

216.50.1 Description. This work shall consist of removing and disposing of existing bridge rails, curbs, slab,

expansion devices and any other items necessary to reconstruct the bridge deck as shown on the plans or as directed by the engineer.

216.50.2 Removal Requirements.

216.50.2 1 The existing bridge deck shall be removed by methods such that the girders, stringers or floor beams

that are to remain in place are not damaged. Any damage to the girders, stringers and floor beams resulting from the contractor’s operations shall be repaired or replaced as directed by the engineer, at the contractor’s expense. Notification of demolition shall be made in accordance with Sec 202.40.1.1.

216.50.2 2 The contact surfaces of all existing structural steel, including any shear connectors, exposed by

removal of the bridge deck shall be cleaned, including the removal of stratified rust, with a minimum of SSPC- SP-3 surface preparation. Any tightly adhered concrete remaining after the surface preparation may be left in place. The area, including the welded connection between the shear connector and the top flange, shall be coated with one coat of gray epoxy-mastic primer (non-aluminum) in accordance with Sec 1081 to produce a dry film thickness of no less than 3 mils. SSPC Certified Contractor QP qualification will not be required for the coating of the top flanges prior to placement of the new concrete deck. Overspray on other areas of the shear connector will be considered acceptable. The gray epoxy-mastic primer (non-aluminum) shall be compatible with concrete.

216.50.3 Method of Measurement. Final measurement of removal of existing bridge deck will not be made

except for authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, removal of existing bridge deck will be measured to the nearest square foot based on measurement longitudinally from end of slab to end of slab and transversely from out to out of the bridge deck. The revision or correction will be computed and added to or deducted from the contract quantity.

216.50.4 Basis of Payment. Removal of existing bridge deck will be paid for at the contract unit price.

SECTION 216.60 PARTIAL REMOVAL OF EXISTING BRIDGE DECK.

216.60.1 Description. This work shall consist of removing and disposing of the existing curbs, rails, slab and

any other items necessary to reconstruct the bridge deck as shown on the plans or as directed by the engineer.

216.60.2 Removal Requirements.

216.60.2 1 Concrete shall be removed by conventional hand/mechanical equipment in accordance with Sec 704.

A removal line shall be established with the joint sawed to a depth of one inch with a vertical face. In no case shall existing reinforcement be cut or damaged by the sawing operation.

216.60.2 2 The existing reinforcing steel shall be stripped, cleaned, straightened and extended into or utilized in

the new concrete as shown on the plans. Care shall be taken to prevent damage to the reinforcement or the reinforcement bond to the concrete. If any reinforcement is damaged or deteriorated, the engineer shall be notified. Cut or broken bars or bars having 10 percent or more cross sectional area lost shall be spliced 24 diameters on each side of the damage.

216.60.2 3 The existing bridge deck shall be removed by methods such that the girders, stringers and floor

beams that are to remain in place are not damaged. Any damage to the girders, stringers and floor beams resulting from the contractor’s operations shall be repaired or replaced as directed by the engineer at the contractor’s expense.

216.60.2 4 The contact surfaces of all existing structural steel, including any shear connectors, exposed by

partial removal of the bridge deck shall be cleaned and coated in accordance with Sec 216.50.2.2.

216.60.3 Method of Measurement. Final measurement of the partial removal of existing bridge deck will not

be made except for authorized changes during construction or where appreciable errors are found in the contact quantity. Where required, partial removal of existing bridge deck will be measured to the nearest square foot based on measurement longitudinally from end of slab to end of slab and transversely from outside edge of the existing slab to the line shown on bridge plans. The revision or correction will be computed and added to or deducted from the contract quantity.

216.60.4 Basis of Payment. Partial removal of existing bridge deck will be paid for at the contract unit price.

SECTION 216.70 PARTIAL REMOVAL OF CULVERT AND SUBSTRUCTURE CONCRETE.

216.70.1 Description. This work shall consist of removing and disposing of existing culvert wings and slab or

substructure concrete as shown on the plans or as directed by the engineer.

216.70.2 Material. The qualified special mortar shall be in accordance with Sec 704.2.

216.70.3 Removal Requirements.

216.70.3 1 Any excavation required during the removal of concrete shall be backfilled after the new concrete is

poured and cured. Any part of the roadway that is removed or damaged and any part of the remaining structure damaged during the removal of the existing concrete shall be repaired or the material replaced, at the contractor’s expense, as directed by the engineer.

216.70.3 2 Concrete removal shall be in accordance with Sec 216.60.2.1. The concrete to be removed will not

be included in the excavation volume. Areas exposed by removal of concrete and not covered by new concrete shall be coated with a qualified special mortar.

216.70.3 3 Existing reinforcing steel utilized in the new concrete shall be prepared in accordance with Sec

216.60.2 2. Existing reinforcing steel not utilized in the new concrete shall be cut off one inch into the concrete.

Any holes outside the limits of new concrete shall be filled with a qualified special mortar.

216.70.4 Method of Measurement. No measurement will be made for partial removal of culvert and

substructure concrete.

216.70.5 Basis of Payment. Partial removal of culvert and substructure concrete will be paid for at the contract

lump sum price. SECTION 216.80 CURB REMOVAL.

216.80.1 Description. This work shall consist of removing and disposing of existing curbs, rails and end posts

as shown on the plans or as directed by the engineer.

216.80.2 Material. Qualified special mortar shall be in accordance with Sec 704.2.

216.80.3 Removal Requirements.

216.80.3 1 Concrete removal shall be in accordance with Sec 216.60.2.1. Areas exposed by removal of concrete

and not covered by new concrete shall be coated with a qualified special mortar.

216.80.3 2 Existing reinforcing steel utilized in the new concrete shall be prepared in accordance with Sec

216.60.2 2. Existing reinforcing steel not utilized in the new concrete and existing rail post bolts shall be cut off

one inch into the concrete. Any holes outside the limits of new concrete shall be filled with a qualified special mortar.

216.80.4 Method of Measurement. Final measurement of curb removal will not be made except for authorized

changes during construction or where appreciable errors are found in the contract quantity. Where required, curb removal will be measured to the nearest linear foot based on measurement from end of curb to end of curb. The revision or correction will be computed and added to or deducted from the contract quantity.

216.80.5 Basis of Payment. Curb removal will be paid for at the contract unit price.

SECTION 216.90 REMOVAL OF EXISTING EXPANSION JOINT AND ADJACENT CONCRETE.

216.90.1 Description. This work shall consist of any excavation, backfill, removal and disposal of the existing

expansion joint system, curb plates and adjacent concrete as shown on the plans or as directed by the engineer.

216.90.2 Material. Qualified special mortar shall be in accordance with Sec 704.2.

216.90.3 Removal Requirements.

216.90.3 1 Any excavation required during the removal of concrete shall be backfilled after the new concrete is

poured and cured. Any part of the roadway that is removed or damaged and any part of the remaining structure that is damaged during the removal of the existing concrete shall be repaired or the material replaced as directed by the engineer at the contractor’s expense.

216.90.3 2 Concrete removal shall be in accordance with Sec 216.60.2.1. The concrete to be removed will not

be included in the excavation volume. Areas exposed by removal of concrete and not covered by new concrete shall be coated with a qualified special mortar.

216.90.3 3 Existing reinforcing steel utilized in the new concrete shall be prepared in accordance with Sec

216.60.2 2. Existing reinforcing steel not utilized in the new concrete shall be cut off one inch into the concrete.

Any holes outside the limits of new concrete shall be filled with a qualified special mortar. Any reinforcement that interferes with the installation of the new expansion joint system shall be called to the attention of the engineer and may be shifted, cut or removed as directed by the engineer. Any reinforcing steel removed that was to remain in place shall be replaced with bars of like size and shape, Grade 60, in accordance with Sec 706 or Sec 710 and spliced 24 bar diameters as directed by the engineer.

216.90.3 4 The contact surfaces of all existing structural steel exposed by removal of the existing expansion

joints and adjacent concrete shall be cleaned and coated in accordance with Sec 216.50.2.2.

216.90.4 Method of Measurement. Final measurement of the removal of existing expansion joint and adjacent

concrete will not be made except for authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, removal of existing expansion joint and adjacent concrete will be measured to the nearest linear foot based on measurement from roadway face of curb to roadway face of curb along centerline of the existing joint. The revision or correction will be computed and added to or deducted from the contract quantity. Portions of the joint extending past the roadway face of curbs will not be measured for payment.

216.90.5 Basis of Payment. Removal of existing expansion joint and adjacent concrete will be paid for at the

contract unit price for each of the items included in the contract. SECTION 216.100 REMOVAL OF EXISTING EXPANSION JOINT SEAL OR SEALANT. 216.100.1 Description. This work shall consist of removing and disposing of existing expansion joint seals or sealant, curb plates and any partial removal of concrete as shown on the plans or as directed by the engineer. 216.100.2 Material. Qualified special mortar shall be in accordance with Sec 704.2. 216.100.3 Removal Requirements. 216.100.3.1 Concrete removal shall be in accordance with Sec 216.60.2.1. Areas exposed by removal of concrete and not covered by new concrete shall be coated with a qualified special mortar. Any damage to the remaining structure resulting from the contractor’s operations shall be repaired or replaced, at the contractor’s expense, as directed by the engineer. 216.100.3.2 Existing reinforcing steel utilized in the new concrete shall be in accordance with Sec 216.60.2.2. Existing reinforcing steel not utilized in the new concrete shall be cut off one inch into the concrete. Any holes outside the limits of new concrete shall be filled with a qualified special mortar. Any reinforcement that interferes with the installation of the new expansion joint seal or sealant shall be called to the attention of the engineer and may be shifted, cut or removed as directed by the engineer. Any reinforcing steel removed that is to remain in place shall be replaced with bars of like size and shape being Grade 60. 216.100.4 Method of Measurement. Final measurement of removal of existing expansion joint seal or sealant will not be made except for authorized changes during construction or where appreciable errors are found in the contract quantity. Where required, removal of the existing expansion joint seal and sealant will be measured to the nearest linear foot based on measurement from roadway face of curb to roadway face of curb along centerline of the existing joint. The revision or correction will be computed and added to or deducted from the contract quantity. Portions of the joint extending past the roadway face of curbs will not be measured for payment. 216.100.5 Basis of Payment. Removal of existing expansion joint seal or sealant will be paid for at the contract unit price. SECTION 216.110 TOTAL SURFACE HYDRO DEMOLITION. 216.110.1 Description. This work shall consist of removal of all existing deck repairs followed by the selective removal of all unsound original concrete over the entire top surface of the bridge deck, and establishment of a highly rough and bondable surface, with a single pass of hydro demolition equipment. Existing deck repairs are defined as any sound or unsound repairs previously made to the original deck. Unsound original concrete is defined as existing bridge deck concrete that is deteriorated, spalled or as determined by the engineer to be unacceptable. 216.110.2 Material. Water used in the hydro demolition shall be in accordance with Sec 1070. 216.110.3 Removal and Repair Prior to Hydro Demolition. 216.110.3.1 Removal of Existing Deck Repair. 216.110.3.1.1 Following scarification of the deck or removal of an existing wearing surface and prior to hydro demolition, the entire deck surface shall be thoroughly cleaned by high pressure water blasting with sufficient pressure to remove all debris. After cleaning, all existing deck repairs will be measured by the engineer and marked for removal over the full deck. 216.110.3.1.2 For bridges without special repair zones, prior to hydro demolition, the contractor shall remove all sound and unsound existing deck repairs using conventional hand/mechanical equipment in accordance with Sec 704.4. 216.110.3.1.3 For bridges with special repair zones, following the completion of deck repair in all special repair zones and prior to hydro demolition, the contractor shall remove all sound and unsound existing deck repairs outside special repair zones using conventional hand/mechanical equipment in accordance with Sec 704.4. 216.110.3.1.4 Removal shall not include any unsound original bridge deck concrete. 216.110.3.1.5 Following removal of existing deck repairs, all debris shall be removed from the deck prior to hydro demolition, at no additional cost. 216.110.3.2 Zoned Conventional Deck Repair. 216.110.3.2.1 Prior to hydro demolition, the deck shall be repaired inside special repair zones as called for in the contract plans in accordance with Sec 704. 216.110.3.2.2 Hydro demolition shall not move forward until the repairs in all special repair zones are complete and properly cured. 216.110.4 Construction Requirements. 216.110.4.1 Environmental Compliance. 216.110.4.1.1 Prior to the start of any hydro demolition, the contractor shall submit to the engineer for review an Environmental Compliance Plan (ECP) that ensures compliance with all federal, state, and local environmental laws and regulations. The ECP shall include specific details of the contractor’s plan for containment, filtering, and disposal of water, slurry, and other debris, including all best management practices (BMPs) that the contractor plans to utilize to prevent environmental pollution and protect the waters of the state. 216.110.4.1.1.1 The ECP plan shall contain a pH control plan. Chronic toxicity limits of pH range from 2 to 12.5 standard pH units. For consideration of release of hydro-demolition wastewater within the right of way or off right of way with an approved waste disposal agreement, pH limits shall be adjusted to be between 6.5 and 9.0. The contractor shall be responsible for determining pH levels of the hydro-demolition wastewater and any adjustments necessary to comply with this requirement. Slurry water outside these limits shall be transported and disposed of in an approved water treatment facility. Any requirements necessary for compliance with water treatment facility regulations for disposal will be the responsibility of the contractor. 216.110.4.1.2 All drains, joints, and other locations where discharge water could exit the deck shall be blocked in order to direct runoff to a central collection and filtering location, as designed by the contractor. When runoff is allowed to be dispersed adjacent to the bridge, BMPs shall be utilized to contain and filter the slurry to prevent the discharge of slurry or other contaminants. 216.110.4.1.3 No direct payment will be made for compliance with this ECP, including, but not limited to, containment of the water and slurry, installing, maintaining, and removing the BMPs, filtering, and disposal of all waste materials. 216.110.4.2 Equipment. 216.110.4.2.1 General The hydro demolition process shall consist of a water supply system, a high pressure water pumping system, and a demolition type unit. The demolition unit shall be robotic, computerized, and self- propelled, utilizing a high pressure water jet stream that is capable of removing concrete to the desired depths specified with a single pass of the unit, including the selective removal of all unsound original concrete. It shall also be capable of cleaning rust and concrete particles from all exposed reinforcing steel. The resulting concrete surface profile shall be one that is highly rough and bondable. 216.110.4.2.1.1 The hydro demolition equipment shall provide shielding to ensure containment of all dislodged concrete within the removal area in order to protect the traveling public and work crew from flying debris on, adjacent to, and below the work site. 216.110.4.2.1.2 Vacuum equipment shall be utilized for clean-up of hydro demolition debris. This equipment shall be equipped with fugitive dust control devices and shall be capable of removing wet debris and standing water in the same pass. 216.110.4.2.2 Calibration The hydro demolition equipment shall be calibrated on a representative sample of sound deck concrete, as directed by the engineer. The calibration will demonstrate the ability to cut to the desired depth or depths, as indicated on the plans, in a single pass. The minimum allowable water pressure shall be 13,000 psi and the maximum water pressure shall not exceed 20,000 psi. The calibration shall accomplish the desired surface roughness, profile, and cutting depth as indicated on the contract plans. The equipment shall then be moved to an area of deteriorated deck, as directed by the engineer, in order to demonstrate the ability to remove all unsound original material. The equipment shall selectively remove all unsound original concrete, avoid the removal of unnecessary sound concrete, and provide a highly rough and bondable surface. 216.110.4.2.2.1 If the equipment does not demonstrate the ability to produce the desired result, as determined by the engineer, the equipment shall be removed from the project and the contractor shall provide other equipment for calibration. No additional contract time or compensation will be allowed for the mobilization of replacement equipment to the work site. 216.110.4.2.2.2 After the contractor has calibrated the equipment settings to the satisfaction of the engineer so that the equipment does selectively remove all unsound original concrete and provide a highly rough and bondable surface, without removing additional sound concrete, the calibration will be approved by the engineer and the contractor shall record the equipment settings as follows: Water Pressure Gauge Water Pressure Gauge Inside Special Repair Zonesª Machine Staging Control (Step) Machine Staging Control (Step) Inside Special Repair Zonesª Nozzle Size Nozzle Type Nozzle Travel Speed Water Usage Rate a Only applicable inside special repair zones on existing cast-in-place concrete box girder, solid slab and voided slab bridges. Not applicable for prestressed concrete or steel beam and girder bridges. 216.110.4.2.2.3 Calibration shall be required on each bridge and when different equipment is brought to the site for use. 216.110.4.3 Operation. 216.110.4.3.1 After calibration of the equipment, the contractor shall perform total surface hydro demolition over the entire surface of the bridge deck. 216.110.4.3.1.1 For bridges without special repair zones, the settings shall be maintained throughout the operation, unless the desired results are not being attained, in which case re-calibration shall be performed. The engineer will periodically verify the calibration settings to ensure the desired results are being attained. 216.110.4.3.1.2 For bridges with special repair zones, two separate settings shall be maintained throughout the operation. One set of settings shall be maintained throughout the operation outside special repair zones unless the desired results are not being attained, in which case re-calibration shall be performed. Another set of settings shall be maintained throughout the operation inside special repair zones unless the desired results are not being attained, in which case re-calibration shall be performed. The engineer will periodically verify the calibration settings to ensure the desired results are being attained. 216.110.4.3.2 The operator shall minimize the overlap of the individual hydro demolition passes to limit the amount of sound concrete removal. 216.110.4.3.3 When the hydro demolition process is taking place above an area of concern, the contractor shall take measures to protect that area from hydro blasting through the deck, falling debris, water runoff, or any other action that the engineer considers a risk to public safety or a risk of property damage. An area of concern shall include vehicular traffic, boat traffic, pedestrian traffic, parking areas, private property, railroad property or any other area of concern as determined by the engineer. 216.110.4.3.4 Only those vehicles directly required to perform the hydro demolition work and clean-up, or corresponding wearing surface construction equipment, shall be allowed on the bridge deck. Contamination of the deck by construction equipment or any other source shall be prevented. 216.110.4.3.5 The contractor shall clean up the slurry and rubble from the hydro demolition operation as soon as possible following the hydro demolition process. This clean-up shall be completed prior to the drying of the slurry on the deck and reinforcing steel. The contractor shall utilize a vacuum collection type system capable of removing wet debris and water in a single operation. Following the cleaning, the surface shall be free of all debris, loose material, slurry, or cement paste. 216.110.4.4 Incidental Conventional Concrete Removals After Hydro Demolition. 216.110.4.4.1 After the deck has been cleaned and dried, and is free of frost, the engineer will visually inspect and perform a sounding test of the entire deck and identify any unsound original deck material that remains. 216.110.4.4.2 The contractor shall remove all identified unsound original deck material, as well as any areas on the deck that were inaccessible to the hydro demolition equipment. This removal work shall be included in the cost of the hydro demolition. The requirements of the deck repair methods as called for in the contract plans and as specified in Sec 704.5 shall be considered when determining the appropriate concrete removal method. 216.110.4.4.3 All removals after hydro demolition shall be done with pneumatic hammers no heavier than the nominal 35-pound class and operated no more than a 45 degree angle from the horizontal. Use of mechanical equipment for the purpose of chipping shall be kept to the absolute minimum to avoid creating micro-fractures on the surface of the deck. 216.110.4.5 Reinforcing Steel Repair The contractor shall take steps necessary to prevent damage to existing reinforcing steel. All equipment shall be operated in a manner that does not damage the deck, reinforcing steel or superstructure components. Any damage caused by the contractor’s equipment or negligence shall be repaired at the contractor’s expense. 216.110.4.5.1 Reinforcement repair shall be in accordance with Sec 704. Replacement of damaged reinforcing steel may include the removal of additional concrete to adequately anchor reinforcing steel to the appropriate lap splice length in accordance with Sec 706. 216.110.4.5.2 Replacement of reinforcing steel will be made at the fixed unit price in Sec 109.16, except that no payment will be made for replacement of reinforcing steel cut or broken by the contractor. 216.110.5 Method of Measurement. 216.110.5.1 Measurement for removal of existing deck repair will be made to the nearest square foot. For bridges without special repair zones, measurement will include all sound and unsound existing deck repairs. For bridges with special repair zones, measurement will only include all sound and unsound existing deck repairs outside special repair zones. 216.110.5.2 Measurement for total surface hydro demolition will be per square yard of the bridge deck as specified on the plans or shown in the contract. No final measurement will be made for hydro demolition except for authorized changes during construction or where appreciable errors are found in the contract quantity. 216.110.5.3 Measurement of reinforcing steel replaced due to excess section loss will be made to the nearest 10 pounds. 216.110.6 Basis of Payment. 216.110.6.1 Payment for removal of existing deck repair will be made at the contract unit price. 216.110.6.2 Payment for total surface hydro demolition will be paid for at the contact unit price. Payment includes all work associated with the hydro demolition process including, but not limited to, ECP, equipment calibration, hand chipping curb areas, removal of remaining unsound original concrete, clean-up of debris and slurry, forming for full depth monolithic repairs, and preparation of the deck for concrete wearing surface. 216.110.6.3 Reinforcing Steel Repair Payment for accepted quantities of reinforcing steel replaced due to excess section loss will be paid for at the fixed contract unit price specified in Sec 109.16. No payment will be made for replacement of reinforcing steel cut or broken by the contractor.