649.1 General Description
This work includes erecting a Portland cement concrete glare screen according to plan dimensions on top of a concrete median barrier.
649.1.01 Definitions
General Provisions 101 through 150.
649.1.02 Related References
A. Standard Specifications Section 621—Concrete Barrier B. Referenced Documents General Provisions 101 through 150.
649.1.03 Submittals
General Provisions 101 through 150.
649.2 Materials
Use materials that comply with Section 621 and the plan details.
649.2.01 Delivery, Storage, and Handling
General Provisions 101 through 150.
649.3 Construction Requirements
649.3.01 Personnel
General Provisions 101 through 150.
649.3.02 Equipment
General Provisions 101 through 150.
649.3.03 Preparation
General Provisions 101 through 150.
649.3.04 Fabrication
General Provisions 101 through 150.
649.3.05 Construction
Construct the glare screen using one of the following alternatives: A. Alternative One Cast the median barrier and while the concrete is still plastic, insert “D” bars into the fresh concrete as indicated on the Plans. Wait until the median barrier concrete has reached a compressive strength of 2000 psi (14 MPa) or an age of seven days. Then place a second course of barrier, of the dimensions shown on the plans, on top of the first course and finish and cure according to Subsections 621.3.05.C and 621.3.05.D. B. Alternative Two As an alternative to inserting “D” bars into the plastic concrete, wait until the median barrier concrete has reached a compressive strength of 2,000 psi (14 MPa), then drill holes for the “D” bars and epoxy them in place. Construct the second course of barrier on top of the first course according to plan dimensions. Finish and cure according to Subsections 621.3.05.C and 621.3.05.D.
649.3.06 Quality Acceptance
General Provisions 101 through 150.
649.3.07 Contractor Warranty and Maintenance
General Provisions 101 through 150.
649.4 Measurement
Concrete glare screen is measured for payment in linear feet (meters) of accepted work of each specified height. The surface is measured along the top of the glare screen.
649.4.01 Limits
General Provisions 101 through 150.
649.5 Payment
This work will be paid for at the Contract Unit Price per linear foot (meter) for each specified height. Payment will be full compensation for furnishing materials and performing the work. Payment will be made under: Item No. 649 Concrete glare screen (height) Per linear foot (meter)
649.5.01 Adjustments
General Provisions 101 through 150.
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