695DETECTABLE WARNING SURFACE

695.1DESCRIPTION—This work is furnishing all material, equipment, tools, and labor required for the

placement and installation of detectable warning surfaces on cement concrete sidewalk curb ramps and other designated surfaces to provide a tactile warning for pedestrians with visual impairments under the provisions of the Americans with Disabilities Act (ADA).

695.2MATERIAL—

15 and meeting the requirements of the Proposed Accessibility Guidelines for Pedestrian Facilities in the Public Right -of-Way (PROWAG). Provide certification as specified in Section 106.03(b)3 that the DWS meets the following PROWAG criteria:

• General. Detectable warning surface with the surface comprised of truncated domes. Dome size and spacing as specified and as shown on the Standard Drawings.

• Surface. Slip resistant.

• Contrast. Provide a DWS color, as approved by the Representative, that contrasts visually with adjacent walking surfaces either light-on-dark or dark-on-light.

• Class A Cement Concrete. Section 704

• Subbase. Section 350

• Joint Sealant Material. Section 705.4(a), (b), or (c)

695.3CONSTRUCTION—

Section 676. Follow DWS manufacturer’s instructions for a cast -in-place installation at the locations indicated and in accordance with the requirements as shown on the Standard Drawings for the designated curb ramp type or other designated surface.

the area where the DWS will be placed. Replace any removed or disturbed aggregate subbase and compact before placing new concrete. Place new cement concrete and follow the DWS manufacturer’s installation instructions for a cast -in- place installation. Fill any saw cut gaps with approved joint sealant material. Fill any gaps around the DWS edge installation with the joint material if necessary.

cement concrete surfaces have properly cured and work is complete at the curb ramp location. Clean the DWS surface using a method recommended by the manufacturer.

695.4MEASUREMENT AND PAYMENT—Square Foot

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