SECTION 813 — WATERPROOFING AND DAMPPROOFING — WATERPROOFING AND DAMPPROOFING
813.01 Description.
This work includes providing waterproofing and dampproofing systems on concrete bridge decks and other surfaces at the required locations. Systems.
a.Dampproofing includes a system formulated to apply to surfaces to minimize the intrusion of moisture in areas that will not bear traffic.
b.W aterproofing includes the application of heat-applied, prefabricated membrane or a cold spray-applied liquid membrane. Use only systems on the Approved Material List. Asphalt Dampproofing. Dampproofing includes the application of a dampproofing system to concrete surfaces that complies with the manufacturer’s recommendations. Heat-Applied Prefabricated Membrane. This type of waterproofing consists of applying a heat-applied asphalt polymer-modified reinforced membrane to concrete surfaces that complies with the manufacturer’s recommendations. Cold Spray-Applied Liquid Membrane. This type of waterproofing system consists of applying a spray -applied plural component resin- based elastomeric membrane to concrete surfaces that complies with the manufacturer ’s recommendations.
813.02 Materials.
General. Deliver m aterials for waterproofing and dampproofing systems in original, tightly sealed containers and unopened packages, as appropriate for the type of material, clearly labeled with the manufacturer’s name, brand name and number, and batch number of the material where appropriate. Before delivery, submit to the Engineer a notarized Certificate of Compliance provided by the manufacturer attesting that the material conforms to the product requirements as approved by the Department. Use a primer recommended by the system manufacturer. Dampproofing. Provide a dampproofing system that conforms to Subsection M12.02.
Part 800 — Bridge Structures August 2025
SECTION 813 — WATERPROOFING AND DAMPPROOFING 800-87 Heat-Applied Prefabricated Membrane. Provide primer and membrane materials of this system conform to Subsection M12.01.1. C old Spray-Applied Liquid Membrane. Provide primer and membrane materials of this system that conforms Subsection M12.01.2.
813.03 Construction Methods.
Surface Preparation for All Types. Before applying the product, ensure that new concrete or repair materials have been cured according to the Standard Specifications or the manufacturer ’s recommendations, whichever is more stringent. If required, perform degreasing with detergent washing according to ASTM D4258 (Standard Practice for Surface Cleaning Concrete for Coating). Clean concrete surfaces abrasively according to ASTM D4259 (Standard Practice for Abrading Concrete) , and repair all spalls and depressions with concrete patch materials per the manufacturer ’s recommendations. Repair voids and blowholes on vertical in the same manner. Prepare all steel surfaces to a near white metal finish per SSPC-10, and overcoat with the manufacturer’s specified primer within four hours, per the manufacturer’s recommendations. Ensure that all surfaces to receive the material are free of any substance that could adversely affect adhesion. Do not allow any overspray on equipment and adjacent areas. Dampproofing.
a.Application. Apply the dampproofing according to the manufacturer’s recommendations. Ensure that the asphalt material covers the surface with a continuous film to the recommended thickness to provide a uniform impervious coating.
b.A cceptance. If the Engineer determines that the work is not being performed satisfactorily or that deficient work is not being properly corrected based on the specifications, furnish the services of a competent technical field representative of the approved manufac turer at no additional cost to the Department. The representative shall instruct the Contractor on installation and inspection procedures in the presence of the Engineer. The representative shall inspect the condition of the prepared and treated surfaces and verify that all surfaces meet the requirements for application of the material. Do not proceed with the application until the representative has confirmed that the surface is ready to receive the material. Heat-Applied Prefabricated Membrane. Perform all work according to the manufacturer’s recommendations. Ensure that the height onto the vertical curb is at least 2 in. but no more than 3 in.
Part 800 — Bridge Structures August 2025
800-88 SECTION 813 — WATERPROOFING AND DAMPPROOFING Cold Spray-Applied Liquid Membrane. Perform all work according to the manufacturer’s recommendations. Ensure that the cold spray laps up at the curb line as with the prefabricated sheet membrane above.
813.04 Method of Measurement.
Dampproofing, Heat-Applied Prefabricated Membrane, and Cold Spray-Applied Liquid Membrane will be measured by the number of square yards of the neat area of the system placed.
813.05 Basis of Payment.
The Department will pay for the completed and accepted quantities as follows. Pay Item Pay Unit Dampproofing SY Heat-Applied Prefabricated Membrane SY Cold Spray-Applied Liquid Membrane SY The prices constitute full compensation for all labor, materials, equipment, and all incidentals required to finish the work, complete and accepted.
Waterproofing and Dampproofing in other states
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Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 455–457 of 951. View official source ↗