SECTION 580 - REMOVAL OF STRUCTURAL CONCRETE (Last Revised September, 2016)
580-1 DESCRIPTION. This work shall consist of removal and disposal of structural concrete from
structural concrete elements, concrete approach slabs, concrete bridge pylons, concrete from structural steel members, and other concrete removal and disposal in accordance with the contract documents and as directed by the Engineer.
580-2 MATERIALS. Not Specified.
580-3 Construction Details
580-3.01 General. The Contractor shall remove structural concrete in accordance with the contract
documents, so as not to damage material designated to remain in place. Reinforcement designated to remain in place shall be cleaned. The Contractor shall only remove structural concrete from elements to remain to the limits shown in the contract documents, in order to preserve structural adequacy and stability. Replacement concrete shall be placed and allowed to reach its initial set prior to any additional removals. A minimum of 7 calendar days prior to beginning removal of structural concrete, the Contractor shall provide a Structural Concrete Removal Plan for acceptance by the Engineer. The Structural Concrete Removal Plan shall identify the equipment to be used, the sequence of operations, provisions for protection of structural steel, provisions for removal and disposal of material, and any additional work zone traffic control or worker safety provisions.
580-3.02 Removal of Structural Concrete. The Contractor shall remove concrete to a sound surface in
accordance with the contract documents. The removal operation shall be angled inward creating a key. Small angle corners shall be minimized per contract documents to prevent voids. Reinforcing bars and miscellaneous material shall be removed or shall be retained, as shown in the contract documents. After removal of concrete has been performed, surfaces designated to come in contact with new concrete placements shall be cleaned in order to ensure proper bonding with the new concrete. Concrete surfaces
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 2026 Volume 2 to be cleaned shall be thoroughly blast cleaned or abraded by other mechanical means to remove remaining loose material. After blast cleaning or abrading, vertical or overhead surfaces shall be air- blown, or rinsed with water to remove dust. Other surfaces shall be vacuum cleaned. Demolition or chipping hammers shall weigh no more than 45 lbs excluding the weight of the bit and muffler. The hammers shall deliver no more than 1600 blows per minute. The Contractor shall provide the Engineer information from the hammer manufacturer to assure that these requirements are not exceeded. The air pressure used to power the hammer shall not exceed 110 psi, measured at the air compressor, as shown by an air pressure gauge in proper working condition provided by the Contractor. Only sharp chisel point bits, a minimum of 2 inches wide, shall be used. If the Contractor's operations result in damage to concrete that is to remain, the Contractor shall make immediate corrections to prevent damage. Exceptions to the hammer limitations shall be approved by the Deputy Chief Engineer (Structures) prior to use.
580-3.03 Removal of Concrete Approach Slabs. The Contractor shall remove concrete approach slabs
in accordance with the contract documents. Sawcutting of the concrete approach slab in order to separate it from existing abutment will be shown in the contract documents and paid for separately.
580-4 Method of Measurement
580-4.01 General. Vacant.
580-4.02 Removal of Structural Concrete. The quantity to be measured for payment will be in cubic
yards measured to the nearest 0.1 cubic yards of concrete removed.
580-4.03 Removal of Concrete Approach Slabs. The quantity to be measured for payment will be in
square feet of concrete approach slab removed, measured to the nearest whole square foot.
580-5 Basis of Payment
580-5.01 General. Vacant.
580-5.02 Removal of Structural Concrete. The unit price bid shall include the cost of all labor,
materials and equipment necessary to satisfactorily complete the work, and all costs of disposal.
580-5.03 Removal of Concrete Approach Slabs. The unit price bid shall include the cost of all labor,
materials and equipment necessary to satisfactorily complete the work, including any sawcutting other than separating the approach slab from the existing abutment, and all costs of disposal. Payment will be made under: Item No. Item Pay Unit 580.01 Removal of Structural Concrete Cubic Yard 580.04 Removal of Concrete Approach Slab Square Foot
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