Article 1 — Description
Construct cast -in-place concrete medians and directional islands.
Article 2 — Materials
Furnish materials in accordance with the following. Item 420, “Concrete Substructures” Item 421, “Hydraulic Cement Concrete” Item 440, “Reinforcement for Concrete” Item 529, “Concrete Curb, Gutter, and Combined Curb and Gutter” Use Class A concrete unless otherwise shown on the plans. Use of fibers meeting the requirements of DMS -4550 , “Fibers for Concrete,” to replace reinforcing steel in Class A concrete is allowed unless otherwise shown on the plans. Dose fibers in accordance with the Department’s MPL of pre- qualified fibers for concrete.
Article 3 — Construction
Provide wood or metal forms securely held in place. Properly position and secure reinforcing steel and dowels. Place concrete for each section on the prepared foundation to line, grade, and cross -section in accordance with Item 420. Separate sections from adjacent curbs or adjoining sections using expansion or contraction joints of the type and size specified on the plans. A curb section may be used for the perimeter of the median or island when shown. Construct curbs in accordance with Item 529. Furnish and place reinforcing steel in accordance with Item 440 unless fiber reinforced concrete is used. Finish exposed surfaces with a wood or metal float after sufficient concrete set. Round exposed edges as shown on the plans. Remove forms after concrete has set. Point up exposed surfaces. Provide an ordinary surface finish in accordance with Item 427, “Surface Finishes for Concrete.” Use mortar consisting of one part hydraulic cement and two parts fine aggregate to plaster exposed formed surfaces when required. Apply the mortar using a template made to conform to the cross -section shown on the plans. Cure at least 72 hr. using a method specified in Item 420, “Concrete Substructures.”.
Article 4 — Measurement
This Item will be measured by the foot or by the square yard to the face of the curb.
Article 5 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Concrete Median” or “Concrete Directional Island.” This price is full compensation for preparing foundation surfaces; furnishing and operating equipment; curbs 816 and gutters used as part of the concrete median or directional island; and labor, materials, tools, and incidentals.