Asphalt Paving Practice Guidelines

These guidelines present the recommended asphalt paving practices of the Georgia Department of Transportation (GDOT). They were developed in consultation with the paving and materials industries, through the Georgia Partnership for Transportation Quality. 

Types of asphalt pavement covered include Bituminous Surface Treatments (BST) and Hot Mix Asphalt (HMA) composed of the Department's 4.75, 9.5 and 12.5 mm Superpave mixes.

The guidelines do not address mix types for other purposes—open-graded mixes (PEM and OGFC) and structural mixes (Stone Matrix Asphalt and Types 19 and 25 Superpave). Likewise, different guidance may apply in paving off-road pavements such as parking areas and airport paving.

Questions regarding these topics may be referred to the State Bituminous Construction Engineer at the GDOT Office of Materials and Research (see section VII). Designs and specifications should be based on a detailed assessment of each project and the availability and costs of materials. The tables in the following sections represent the applications and thicknesses normally specified, while providing flexibility to address unusual constraints and conditions.