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EFFICIENT + INNOVATIVE + HIGH-PERFORMING

COMMERCIAL PROJECTS 
OVERVIEW

Many of our commercial projects require street excavation, grading, stone base work and placing base and surface mix asphalt. Some well-known Charlottesville destination locations such as the Glenmore Subdivision, Farmington Country Club, Charlottesville-Albemarle Airport, Peter Jefferson Place, Old Trail Village, University of Virginia, and Woodberry Forest are all locations where we have been privileged to work.

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GREEN INITIATIVES

There are more than 2 million miles of paved roads in the United States, and an astounding 94 percent are surfaced with asphalt. Is this way of building roads a sustainable one? The answer is a resounding YES.

The asphalt industry is already America’s number one recycler. In fact, asphalt pavement is 100 percent recyclable and reusable and it is America’s most reused pavement material. 

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GREEN INITIATIVES

There are more than 2 million miles of paved roads in the United States, and an astounding 94 percent are surfaced with asphalt. Is this way of building roads a sustainable one? The answer is a resounding YES.

The asphalt industry is already America’s number one recycler. In fact, asphalt pavement is 100 percent recyclable and reusable and it is America’s most reused pavement material. 

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OUR EXPERTISE: UNIQUE CHALLENGES WITH DURABLE SOLUTIONS

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Street excavation

Effects on existing traffic flow

High percentages of recycled asphalt per ton

Stone base work

Maintenance and durability

Grading and structural integrity

Shoulders and lateral support

Water drainage and longevity

Surface options — base and surface mix — and processes

Extensive project management

SURFACE TYPES

PLANT MIX ASPHALT

There are a number of types of plant mix produced in each of our plants. The main difference in the types is the maximum size of the largest aggregate in the plant mix, and the various types have specific uses. The sizes and primary uses are as follows:

  • BM-25.0 – This VDOT classification is plant mix that is used for a base course. The designation stands for Base Mix with a maximum size aggregate of 25 millimeters. This type of base asphalt is typically used on highways, streets or areas used by heavy commercial traffic. Base asphalt is covered with Intermediate and Surface plant mix or Surface plant mix alone, depending on the pavement design, which is dictated by the expected traffic load.

  • IM-19.0A or D - This VDOT classification is plant mix that is used for an intermediate course. The designation stands for Intermediate Mix with a maximum size aggregate of 19 millimeters.

  • SM-12.5A or D - This VDOT classification is plant mix that is used for a surface course on a high traffic volume highway . The designation stands for Surface Mix with a maximum size aggregate of 12.5 millimeters. This mix has a slightly rough surface texture. 

  • SM-9.5A or D - This VDOT classification is plant mix that is used for a surface course on most highways, city streets, commercial parking lots and driveways. The designation stands for Surface Mix with a maximum size aggregate of 9.5 millimeters. The surface texture is smooth and non-porous.

SURFACE TREATMENTS

In addition to plant mix asphalt pavement or black top, there is another type of pavement performed by S.L.Williamson Co. called Surface Treatment, also known as “tar and chip” or “chipseal.” This type of road surface is used by VDOT on secondary roads that do not have a high traffic volume. Surface treatment is installed by spraying liquid asphalt from a distributor truck on a prepared stone base, covering the liquid asphalt with a layer of crushed aggregate and compacting it with a roller. This is usually done in 2 layers (prime and seal) or 3 layers (prime and double seal). The color and texture of the final surface is determined by the aggregate used on the final two seals.

Aggregate color varies according to its source (i.e. type of rock – granite (grey), basalt (green), and crushed river gravel (light brown). Surface treatment has a “float” of loose gravel on the surface that some think offers a more “rural” and less “urban” feel to the surface. The cost is a little less than plant mix. However, it is not as thick a surface as plant mix and is, therefore, less durable.

CONTACT OUR ESTIMATING TEAM:

Our S.L. Williamson Estimating Team has decades of experience with complex projects, materials and site plans. If you are ready to talk about your project, we are ready to partner with you! Contact us today at (434) 295-6137 or estimates@slwilliamson.com.

FEATURED PROJECTS