4 Rock
A family tradition spanning over 60 years. Serving Cobb, Bartow, Cherokee, Floyd, Polk, Gordon and surrounding counties.
4 Rock is a foundational aggregate known for its balanced utility in medium to large-scale construction and grading projects across North Georgia and Metro Atlanta. Measuring approximately 1 to 2 inches in size, it is coarser than your standard crushed stone but finer than the heavy-duty Riprap. This size and angularity make it an excellent material for providing immediate stability, constructing durable access points, and creating permeable base layers. At Kevin Westmoreland Trucking, we understand its versatile role and ensure its reliable, high-capacity delivery, upholding the 60-year family tradition of honesty and dependability.
Key Characteristics and Functions
4 Rock serves as a highly functional, multi-purpose aggregate in scenarios where both stability and excellent drainage are critical:
- Intermediate Stability: Its size allows it to interlock effectively, providing a firmer surface over subgrade than smaller gravels, yet it’s easier to spread and grade than 3 Rock. It provides a quick solution for stabilizing muddy or saturated ground.
- High Permeability: Like other clean aggregates, 4 Rock has minimal fines, allowing water to flow freely through the voids. This makes it a preferred choice for large drainage applications where high volumes of water must be managed quickly.
- Durable Sub-Base: It functions as a robust sub-base, supporting subsequent layers of finer materials. It distributes heavy loads efficiently, protecting the lower soil layers from compression and preventing surface failures.
Essential Applications for 4 Rock
Our reliable MACK truck fleet frequently delivers bulk loads of 4 Rock (up to 18.5 tons) to various project types throughout our extensive service area, including Cartersville, Kennesaw, and Marietta:
Haul Roads and Site Access
4 Rock is frequently used to construct durable haul roads and construction entrances on sites with moderate to heavy traffic. While 3 Rock is reserved for the worst conditions, 4 Rock offers a more affordable and easily managed solution for access roads, providing a stable, all-weather surface that prevents trucks from tracking mud onto public streets.
Erosion Control and Drainage
This aggregate is a cornerstone of effective erosion control. It is used to line steep ditches, establish permeable layers in retaining walls, and create protective aprons around culverts and drainage pipes. Its ability to handle high water volume makes it essential for large storm drainage projects.
Structural Ground Preparation
For large industrial parks or commercial developments, 4 Rock is often used as a structural fill or buffer layer. It can be placed directly over poor soil before a layer of smaller aggregate (like Crusher Run) or concrete is applied. This technique reduces the likelihood of settling and provides necessary subsurface strength.
Utility and Pipe Protection
In certain utility applications, particularly for larger diameter pipes or complex underground infrastructure, 4 Rock is utilized to provide a firm yet permeable bedding layer that protects the pipe while allowing groundwater to escape freely. By choosing Kevin Westmoreland Trucking for your 4 Rock delivery, you ensure that this essential structural component arrives promptly and accurately, supporting the success and longevity of your demanding projects. Contact us today to schedule your high-capacity 4 Rock delivery.