What are Wyoming Temporary Concrete Barrier Specifications?

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The Wyoming Department of Transportation outlines general notes regarding the proper dimensions and installation of temporary concrete traffic barriers for both terminal and end terminal applications.

Wyoming Temporary Concrete Barrier General Notes

According to the instructions of the Wyoming Department of Transportation, remove and replace barriers not meeting tolerance requirements at no additional cost to the department. Ensure that concrete barrier meets the following tolerances:

  1. Cross-sectional dimensions within ¼ in of design dimensions

  2. Finished barrier true to specified line and grade ± ¼ in every 10 ft

  3. Surface variation under a 10-foot straightedge no greater than ¼ in

Wyoming Temporary Concrete Barrier and End Terminal Specifications

The Wyoming Department of Transportation outlines the following guidelines for temporary concrete barrier and end terminals:

  1. Provide barrier and end terminals that meet the testing requirements of NCHRP350, test level 3.

  2. Use class B concrete in accordance with Section 513, Structural Concrete, and incorporate grade 40 reinforcing steel. Finish with an ordinary surface and with a 1-inch chamfer on corners. Use anchor pins, connecting pins, and other miscellaneous hardware that meet or exceed the requirements of ASTM A 36. Coat exposed steel with one coat of shop primer, applied at a minimum wet thickness of 3 mil.

  3. Use bidirectional delineators approved by the State Traffic Engineer that match the color of the adjacent edgeline pavement stripe. Attach delineators to the barrier and terminal in accordance with the manufacturer’s recommendations.

Wyoming Temporary Concrete Barrier and Terminal Specifications

The Wyoming Department of Transportation outlines the following guidelines for temporary concrete barrier and terminals:

  1. Use only one type of barrier and only one type of barrier connection, as approved by the engineer, on the project. Use barrier and end terminals that are in good condition, as determined by the engineer.

  2. Place barrier in smooth lines with connecting and terminal anchor pins fully inserted and pulling against the connecting pins to establish a tight connection. Drive terminal anchor pins into the ground.

  3. Repair or replace barrier or terminals that are damaged, as approved by the engineer, at no additional cost to the department.

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