Temporary Barrier Wall Specifications in New York

The New York State Department of Transportation (NYSDOT) details requirements for precast, temporary concrete barrier wall in Section 619 of their Department’s Standard Specification for temporary concrete barrier. NYSDOT section 619 deals with protection and maintenance of traffic specifically. According to New York regulations, barrier walls must adhere to the requirements of the DOT’s Standard Sheets or approved Material Details. Based on Section 619, here’s some info about the types of barrier walls currently approved in New York:

1. New Jersey Shape

This includes 3658 mm (12'-0") long, 6096 mm (20'-0") long, and 3048 mm (10'-0") long varieties of New Jersey shape barrier. It also includes barrier that is a combination of 3658 mm (12'-0") and 6096 (20'-0") long, if the components are properly connected. The following model numbers are approved: MB12-PC, MB10-PC, MB20-PC, and 1220-PCB.

All New Jersey shape barrier wall must be manufactured by J-J Hooks for use in New York following Easi-Set standards. Easi-Set Industries/J-J Hooks use the FHWA-approved dimensions, which are extensively crash tested. All New Jersey barrier wall must have Class AA concrete with a strength of at least 5,000 psi. Steel used must be ASTM A-36. Reinforcing bars should be ASTM A-615, Grade 60, and welded bars should be ASTM A-706, Grade 60. The barrier wall also needs to be cast in steel forms that have a standard weight aggregate and that have 5.0 to 9.0% entrained air content. Barriers need to be installed using maximum separation to reduce deflection upon impact. Additionally, any surfaces welded together need to have no moisture, rust, slag, or grease on their surfaces.

2. New York Tapered Jersey Style

This is the Jersey shaped end unit barrier approved for use in New York. It is 6086 mm (20'-0") long. Other specs include: Class AA concrete with 5,000 psi strength, ASTM A-36 steel, ASTM A-16, Grade 60 rebars, and ASTM A-706 welded bars. This barrier wall also must be produced by J-J Hooks using Easi-Set safety standards.

3. T-LOK F-Shape Barrier

This is a newer type of barrier with an F-shape that maximizes strength and safety in the event of a collision. It’s produced by T-LOK in Harrisburg, Virginia for specific use in the state of New York. The minimum compressive strength of its concrete at 28 days should be 4,000 psi. Reinforcement steel must be ASTM 615, Grade 60. T-LOK F-shape barrier can be cast anywhere from 12 feet to 20 feet in length in increments of two feet. This type of barrier needs to meet the requirements established by the N.Y.S. Steel Construction Manual. This type of barrier wall must never be mixed with New Jersey style. It must be used exclusively on its own. And, likewise, all New Jersey barrier wall must be used on its own. The two different types of barrier wall are incompatible to use with each other, and improperly mixing them together can create significant safety risks on roads and highways.

Keep in mind that when purchasing barrier wall for the state of New York, the supplier is required to submit approved Materials Details (two copies of the details) by way of the contractor to the engineer in order to assure that the barrier wall is accepted for use in New York. This must be done at least ten days before any barrier wall is used on the road. This rule helps the NYSDOT guarantee that all precast concrete barrier wall is the proper kind before road projects begin. And, ultimately, it helps contractors and engineers avoid delays or difficulties due to having acquired the incorrect type of barrier.

As temporary precast concrete barrier wall standards change from state to state, it is important to stay updated on the varying regulations. We previously published blogs defining the standards about precast barrier wall specifications in Ohio, barrier wall variations and regulations in Florida, etc. In addition, here is an overview of barrier wall styles and uses in general.

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