Everything You Need to Know About CA6 Gravel: A Comprehensive Guide

Everything You Need to Know About CA6 Gravel: A Comprehensive Guide

CA6 gravel, also known as road rocks or CA-6, is a type of aggregate material that is highly sought after for various construction and landscaping endeavors. 

Its composition includes a combination of coarse and fine particles, such as crushed stone, sand, and, of course, gravel. The term “CA6” refers specifically to the grading and composition of this exceptional material.

Renowned for its remarkable durability and stability, CA6 gravel is a favored choice when it comes to an array of applications. 

For instance, it is commonly utilized as a base material for the construction of roads, driveways, and parking lots. 

Thanks to its robustness, it ensures a sturdy foundation capable of withstanding heavy traffic as well as the harshest weather conditions. 

Not to mention, CA6 gravel is frequently incorporated in the development of retaining walls, drainage systems, and landscaping undertakings.

As you can see, CA6 gravel, or road rocks, is a reliable and versatile option for your construction and landscaping requirements. 

Its unique properties make it an appealing selection for both large-scale infrastructure projects and smaller, more delicate ventures. 

Whether you need to fortify a road or enhance the aesthetics of your outdoor space, CA6 gravel is the ideal solution.

Uses and applications of CA6 gravel

CA6 gravel, often referred to simply as CA6 or road mix, is a type of crushed stone that is commonly used for various construction and landscaping purposes. 

Here are some of the primary uses and applications of CA6 gravel:

  1. Base Material: CA6 gravel is frequently used as a base material for roads, driveways, and parking lots due to its compactibility and strength. This type of gravel provides a stable foundation, which is necessary for any construction that requires a flat, stable surface.
  2. Backfill Material: It can serve as an excellent backfill material for retaining walls and other structures. The angular shape of the stones allows them to interlock, providing a firm backing to structures.
  3. Drainage Applications: Due to its composition and angular shape, CA6 gravel is suitable for drainage projects. It facilitates proper water flow in landscaping and prevents water accumulation that could lead to soil erosion.
  4. Concrete Aggregate: CA6 can be used as an aggregate in concrete mixes. Its properties can contribute to the strength and durability of concrete structures.
  5. Limestone Road Base: In some regions, CA6 gravel is made from crushed limestone, which makes it an ideal road base material, offering durability and good drainage properties.
  6. Patio and Pathway Construction: For residential landscaping, CA6 gravel is often utilized as a base for patios and walkways where a stable surface is required before laying pavers or stones.
  7. Grade 9 Gravel: CA6 is sometimes referred to as grade 9 gravel and can be used for under slab of residential, commercial and industrial floors for a smooth sub-base material.
  8. General Construction: CA6 gravel is also a common choice for general construction needs due to its versatility and cost-effectiveness.

Each of these applications takes advantage of CA6 gravel’s key characteristics, such as its load-bearing capabilities, drainage properties, and general durability. 

When considering CA6 gravel for a project, it’s also beneficial to calculate the material’s weight per yard using a ca6 gravel calculator to estimate the amount needed accurately, and to consider the ca6 gravel cost per ton, which can impact the overall budget of a project.

Benefits of using CA6 gravel

CA6 gravel offers several benefits that make it a preferred choice for construction and landscaping applications. The advantages include:

  1. Durability: CA6 gravel is known for its durability. The crushed stones interlock to form a stable surface that can withstand heavy loads, making it suitable for high-traffic areas like driveways and roadways.
  2. Cost-Effectiveness: When compared to other materials, CA6 gravel cost is often lower, providing a cost-effective solution for large-scale projects. Additionally, the maintenance costs are relatively low over time.
  3. Versatility: This type of gravel can be used in a variety of applications, from road construction to landscaping. It’s versatile enough to serve as a base material, drainage layer, or even as an aggregate in concrete.
  4. Good Drainage: CA6 gravel allows water to drain through, which prevents pooling and erosion. This is particularly important in areas that experience heavy rainfall.
  5. Ease of Installation: The material is relatively easy to spread and compact, which can save on labor costs and time during the construction process.
  6. Environmental Benefits: Gravel is a permeable material, allowing rainwater to seep into the ground, which can recharge groundwater and reduce stormwater runoff, a benefit for sustainable construction practices.
  7. Load Distribution: The angular shape of the CA6 stones allows them to lock together, which helps distribute the load evenly. This makes it an excellent choice for use as a foundation or base layer under roads, pavements, and buildings.
  8. Accessibility: It’s widely available, and one can often find “road mix gravel near me” or “CA6 gravel near me” with ease, which reduces transportation costs and further contributes to the material’s affordability.
  9. Recycled Options: Some CA6 gravel is made from recycled concrete, providing a more environmentally friendly option that reduces waste and can also be more economical.
  10. Adjustable Composition: The specific composition of CA6 gravel can be adjusted depending on the source and the intended use, whether it’s from limestone, concrete, or other recycled materials.

For any construction or landscaping project, it is essential to consider these benefits in conjunction with the specific requirements of the project to determine if CA6 gravel is the most suitable material to use. 

Additionally, tools like the ca6 gravel calculator can assist in planning by estimating the quantity required, which is vital for budgeting and logistics.

Crushed rock samples.

Differences between CA6 and CA7 gravel

Certainly. CA6 and CA7 are both types of crushed stone but they have different characteristics and uses, which stem from their size, composition, and the way they compact. 

Here are the key differences:

  1. Size and Composition:
    • CA6 gravel typically consists of crushed stone that combines a variety of particle sizes, which may include fines or stone dust along with larger aggregate. This composition allows the particles to compact well due to the mixture of sizes that fit together more tightly.
    • CA7 gravel, on the other hand, usually consists of clear gravel with a single size of particles, typically ¾ inch. It lacks the fines found in CA6, which means it has larger void spaces between the stones and doesn’t compact as tightly as CA6.
  2. Compaction and Binding:
    • CA6 is known for its excellent compaction and binding properties due to the smaller particles filling the gaps between the larger stones, creating a stable base.
    • CA7, lacking these smaller particles, doesn’t bind together as well as CA6 and is often used where drainage is a priority, like in backfill for drainage projects, because the larger void spaces allow water to flow through more easily.
  3. Uses:
    • CA6 is more versatile due to its compaction ability, making it suitable for use as a base material under pavements, roadways, and driveways.
    • CA7 is typically used in situations that require better drainage and where the stability and compaction of the gravel are less critical.
  4. Stability:
    • CA6 provides a more stable base for construction because of the interlocking nature of the varied particle sizes.
    • CA7, while stable, is generally less so than CA6 but is preferred in applications where water drainage is critical.
  5. Maintenance:
    • CA6 surfaces may require less maintenance due to their compaction and binding characteristics which create a firm surface.
    • CA7 might need more maintenance, especially in areas with water exposure, because it doesn’t compact as well, leading to potential shifting or settling.
  6. Cost:
    • The cost can vary depending on the location and availability but generally, the cost differences between CA6 and CA7 gravel may not be significant. However, because CA6 can serve as a multipurpose material, it might offer more value for money in various applications.

When selecting between CA6 and CA7, it’s important to consider the project requirements. If you need a stable base that will be subjected to traffic and loads, CA6 is usually the better choice. 

If you’re looking for a drainage solution, CA7 might be more appropriate. 

Additionally, it’s always advisable to use a ca6 gravel calculator or the equivalent for CA7 to accurately estimate the amount of gravel you will need for your project.

What size is CA6 gravel?

CA6 gravel is a graded aggregate that typically ranges in size from 3/4 inch down to fines or dust particles. This grading allows for a variety of particle sizes in the mix, which aids in compaction and stability. 

The precise size specifications can vary slightly depending on the quarry or region, but the general characteristic of CA6 is its mixture of stone sizes.

This mix typically includes:

  • Stone fragments that are approximately 3/4 inch in size as the largest components.
  • Smaller particles, including coarse sand and fines, which fill the gaps between the larger stones when compacted.

The specific “what size gravel is CA6” question is answered by the blend of these sizes, which gives CA6 its excellent load-bearing properties and compaction capabilities. 

The fines help to bind the larger stones together creating a stable base that is often used in construction projects.

It’s important to note that the term “CA6” is a designation that can vary regionally in its specific composition, so it’s always best to check with local suppliers or refer to state or regional specifications for exact dimensions. 

This mixture is what makes CA6 distinct from other grades of gravel which may consist of more uniformly sized particles, like CA7, which lacks the fines and has more consistent, larger spaces between the stones for better drainage.

How much does CA6 gravel cost?

The cost of CA6 gravel can vary widely depending on several factors including geographic location, availability, quantity needed, and supplier pricing. 

Generally, prices can range from:

  • Bulk Pricing: When purchased in large quantities, CA6 gravel typically costs less per ton. Bulk purchases are common for large construction projects.
  • Delivery and Distance: The cost may increase if the delivery distance from the quarry or distributor is far. Some suppliers may offer free delivery within a certain radius.
  • Seasonal Factors: Depending on the season, demand can affect the price. In some regions, construction work is seasonal, and prices may be higher during peak construction times.

To provide a rough estimate, the cost can be anywhere from $10 to $50 per ton for the gravel itself. Additional costs for delivery and spreading should also be considered.

For smaller projects or residential use, CA6 gravel might also be sold by the cubic yard or even by the bag for very small projects. Prices per cubic yard may range from $20 to $60 or more.

To get an accurate estimate of the “how much does ca6 gravel cost” for your specific project, it’s advisable to contact local suppliers. 

They can provide a quote based on the current market rate, the amount of gravel you need, and any additional delivery fees. 

Using a “ca6 gravel calculator” can help determine the volume of gravel you’ll need, and subsequently, the overall cost.

Where to find CA6 gravel near me

If you are looking for CA6 gravel near your location, there are several resources you can use to find local suppliers. 

One option is to search online directories and websites that specialize in construction materials. These platforms often provide a list of suppliers in your area along with their contact information.

Alternatively, you can reach out to local construction companies, landscaping professionals, or hardware stores for recommendations. 

They may have firsthand experience with suppliers in your area and can provide valuable insights and recommendations.

Factors that affect the price of CA6 gravel

The price of CA6 gravel can be influenced by several factors, including:

1. Location and Availability: The proximity of the gravel source to your project site can significantly affect the cost. If you are far from a quarry or a supplier, transportation costs will be higher.

2. Quantity Purchased: Buying in bulk often reduces the price per ton or cubic yard. Suppliers may offer discounts for large volume purchases.

3. Quality of Material: Recycled CA6 gravel may be less expensive than virgin material due to the lower processing costs involved in recycling. The purity and composition of the gravel can also play a role, with higher quality materials being more expensive.

4. Delivery Fees: Suppliers may charge for delivery, especially for large quantities or long distances. Some may offer free delivery within a certain area or for orders over a specific size.

5. Market Demand: Prices can fluctuate based on the demand for CA6 gravel. During periods of high construction activity, prices may increase due to higher demand.

6. Seasonal Variations: Weather conditions can affect the availability and cost of CA6 gravel. For instance, during winter or rainy seasons, it might be more challenging to mine and transport the gravel, potentially raising prices.

7. Fuel Costs: The cost of fuel can impact the price of CA6 gravel since transportation is a significant part of the overall cost. Rising fuel prices will generally lead to higher costs for the consumer.

8. Supplier-Specific Pricing: Different suppliers have varying pricing strategies based on their operational costs, including equipment, labor, and overhead costs. Some may offer competitive pricing to attract more customers.

9. Type of CA6 Gravel: There are different types of CA6 gravel, like limestone or recycled concrete, and the price may vary depending on the type you choose.

10. Regulatory Fees: Any regulatory fees or environmental charges for mining operations can also be factored into the cost of CA6 gravel.

To get the most accurate pricing, it’s recommended to contact local suppliers, as they can provide quotes that take all of these factors into account.

There is need for many size of construction aggregate.

Tips for using and maintaining CA6 gravel

Using and maintaining CA6 gravel effectively requires careful consideration of how it’s laid down and how it’s managed over time. Here are some tips for both:

For Usage:

  1. Proper Installation: Ensure that the area where CA6 gravel is to be placed has proper grading for drainage. This is critical to prevent water pooling which can lead to erosion or instability in the gravel layer.
  2. Layering: When laying down CA6 gravel, do it in layers and compact each layer thoroughly before adding the next. This will help to create a more stable base or surface.
  3. Edging: Use edging materials to keep the gravel in place. This could be metal or plastic edging, wood, bricks, or even larger stones. Without proper edging, gravel can spread out and become thin in places, reducing its effectiveness as a base or pathway.
  4. Weed Barrier: Before laying the gravel, consider putting down a landscape fabric or weed barrier. This can help to prevent weeds from coming up through the gravel, which can be both unsightly and destabilize the gravel bed over time.

For Maintenance:

  1. Regular Top-Up: Over time, gravel can become compacted or displaced by traffic, weather, or cleaning. Plan to add a fresh top layer of gravel every couple of years to keep the surface level and to maintain proper drainage.
  2. Weed and Debris Removal: Even with a barrier, some weeds may find their way through. Remove weeds promptly to prevent them from spreading. Also, keep the gravel clear of leaves and debris which can trap moisture and lead to weed growth.
  3. Raking: Periodically rake the gravel to ensure even distribution, particularly in areas that receive foot or vehicle traffic. This can help prevent ruts and potholes from forming.
  4. Compaction: If the gravel is in a high-traffic area, consider renting a compactor to go over the surface annually. This can help to maintain a firm and stable surface, especially after adding more gravel.
  5. Drainage Inspection: Occasionally check the drainage of the gravel area, especially after heavy rains, to ensure that water is still draining well. If pooling occurs, additional grading may be required.

By following these usage and maintenance tips, you can help ensure that your CA6 gravel installation remains functional and attractive for many years.


CA6 gravel is a versatile and durable stone material that has numerous applications in construction and landscaping projects. 

Its strength, excellent drainage properties, and relatively low maintenance make it an attractive choice for a variety of projects. 

Whether used as a base material for roads and driveways or as a component in landscaping projects, CA6 gravel provides stability, durability, and aesthetic appeal. 

By understanding the uses, benefits, and maintenance tips associated with CA6 gravel, you can make informed decisions and achieve successful project outcomes. 

When considering the cost of CA6 gravel, it is important to factor in both the initial cost of the stone and any additional costs associated with transportation and installation. 

Taking into account all these factors will help you determine the total cost of your project.