What are Georgia Precast Concrete Barrier Specifications?

The State of Georgia Department of Transportation outlines specifications regarding the proper dimensions for precast concrete barriers, including general notes, plan details and pin details.

Georgia Precast Concrete Barrier Notes

The State of Georgia Department of Transportation’s general instructions are as follows:

1. Materials should be Class A concrete and 40 steel.

2. See Georgia Specifications for basis of payment and method number.

3. Reinforcements, having an area at least equal to the rebars shown in the design plan, may be used as an alternative.

4. Barriers should be placed such that openings between individual sections are kept to a minimum.

Georgia Precast Concrete Barrier Plan Details

Precast concrete barriers in Georgia should conform to the following dimensions and include the following features, according to the State of Georgia’s Department of Transportation’s specifications:

Plan Details
Barrier sections should be connected together with the 1-1/4” diameter A-307 double hex connection bolt. The bottom nut and washer should be maintained by the contractor for the duration of the barrier installation.

Side View Details
Barriers should be 2’-8” high and 12’ wide. Each barrier should include two drainage slots that are 8” wide; the center of the left drainage slot should be located 2’-6” from the left side of the panel, and the center of the right drainage slot should be located 2’-6” from the right side of the panel.

End Elevation Details
When viewed from the end, the bottom of each panel should measure 2’-6” and the top of each panel should measure 12”. The break point should be located 10” above the ground line. Each panel should have a vertical reveal of 3”, should measure 2’-8” tall and should be symmetrical in nature.

Georgia Precast Concrete Barrier Pin Details

Precast concrete barrier pins in Georgia should conform to the following dimensions and include the following features, according to the State of Georgia’s Department of Transportation’s specifications.

Pins should measure 1-1/4” in diameter and 2”-2” in length. Each pin should include a 6” thread and a nut and washer at each end of the pin. An A-307 double hex connection bold should be used, as well as an A-36 washer.
An alternate connecting pin with a fused nut on the top threaded portion and a nut and washer (as specified above on the bottom) may also be used.

This blog post is an interpretation of specifications by the Georgia Department of Transportation. Please consult with Georgia DOT's most recent requirements for definitive information.

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