RCA #57 Stone in Maryville, TN
Clean, free-draining recycled #57 gravel for drains, wall backfill, and pipe bedding. Serving Knoxville, Maryville, and East Tennessee.
The quick answer
#57 stone is clean crushed stone, roughly 3/4 to 1 inch, with no fines. Water runs right through it, which makes it the standard pick for French drains, retaining wall backfill, and pipe bedding. We sell the recycled version: RCA #57 stone, crushed and screened from clean concrete at our yard at 245 Brookdale Rd in Maryville. It weighs about 1.35 tons per cubic yard.
Looking for 57 gravel near Knoxville? Our yard in Maryville is a short drive south of Knoxville. Pick it up at the yard or have it delivered.
RCA #57 stone specs
| Material | Recycled concrete aggregate (RCA), crushed and screened on site in Maryville |
|---|---|
| Size range | Roughly 3/4 to 1 inch, angular |
| Fines | No. Screened clean, so the voids stay open |
| Approx. weight | About 1.35 tons per cubic yard |
| Compaction | Low. Settles and locks a little but never packs into a hard surface |
| Drainage | Excellent. Water moves straight through the open voids |
Weights are approximate and shift a little with moisture from load to load.
Best uses for #57 stone
- ✓French drains and curtain drains (wrapped in filter fabric)
- ✓Drainage backfill behind retaining walls
- ✓Pipe bedding and surround for drain and culvert pipe
- ✓Driveway top course over a compacted crusher run base
- ✓Gravel layer under slabs and footings to break up ground moisture
- ✓Dry wells, downspout outlets, and around foundation drains
Anywhere water needs to move, #57 is the right call. Where you need a hard surface that carries weight, use RCA crusher run instead, or put crusher run down as the base and #57 on top. For drains, line the trench with non-woven filter fabric so fine soil does not clog the stone over the years. See our French drain aggregate guide for trench sizing.
How much #57 stone do you need?
Here is the coverage per 100 square feet (a 10 by 10 foot area) at common depths, using 1.35 tons per cubic yard.
| Depth | Cubic yards per 100 sq ft | Tons per 100 sq ft |
|---|---|---|
| 2 inches | 0.62 | 0.83 tons |
| 4 inches | 1.23 | 1.67 tons |
| 6 inches | 1.85 | 2.50 tons |
The math
Cubic yards = square feet x (depth in inches / 12) / 27
Tons = cubic yards x 1.35
Example at 4 inches: 100 x (4 / 12) / 27 = 1.23 cubic yards. 1.23 x 1.35 = 1.67 tons. For a French drain trench 50 feet long, 1 foot wide, and 18 inches of stone: 50 x 1 x (18 / 12) / 27 = 2.78 cubic yards, times 1.35 = about 3.75 tons.
Run your own numbers in the gravel calculator. Add about 10 percent for trench walls that are not perfectly straight.
RCA #57 vs virgin #57 stone
We only sell the recycled version. Here is a general comparison against quarry #57 so you can decide if it fits your job.
| Factor | RCA #57 | Virgin #57 |
|---|---|---|
| Source | Crushed and screened from clean concrete tear-outs | Blasted and crushed from a quarry |
| Drainage | Free-draining, open voids | Free-draining, open voids |
| Shape | Angular, locks together | Angular, locks together |
| Weight per yard | A little lighter, so a ton covers a bit more area | Slightly heavier per cubic yard |
| Look | Light gray to tan, some color variation | Uniform gray or blue-gray |
| Environmental | Keeps concrete out of the landfill, counts as recycled content | New material mined from the ground |
| Where to buy here | Our Maryville yard | We do not sell virgin stone |
Bottom line: for drains, backfill, and bedding, RCA #57 moves water the same way. If a plan calls out a specific DOT spec or you want a uniform decorative color, check with your engineer or call us first.
How to order
Pick up at the yard
Bring your pickup, trailer, or dump truck to 245 Brookdale Rd, Maryville, TN 37801. We load you with the loader. No appointment needed.
Hours: Mon-Fri 7 AM to 5 PM, Saturday 8 AM to noon, closed Sunday.
Get it delivered
Tell us the tons and the drop address and we line up the truck. Material and hauling on one invoice.
How our trucking service works →#57 stone FAQ
What is #57 stone?
#57 is a standard size of clean crushed stone, with pieces roughly 3/4 to 1 inch and no fines. Because there is no dust filling the gaps, water passes straight through it. Ours is RCA #57, made by crushing and screening clean concrete at our Maryville yard.
Is recycled #57 stone good for French drains?
Yes. It is clean, angular, and free-draining, which is what a French drain needs. Wrap the trench in filter fabric so soil does not migrate into the stone over time.
How much #57 stone do I need?
Plan on about 1.67 tons per 100 square feet at 4 inches deep. For a trench, multiply length by width to get square feet, then use the depth of stone. Our calculator does the math for you.
How much does #57 stone cost near Knoxville and Maryville?
Call (865) 999-0857 for current pricing. The rate depends on how many tons you need and whether you pick up at the yard or want it delivered.
Can I use #57 stone for a driveway?
Yes, as a top layer over a compacted crusher run base. On its own it will not pack tight and can rut or roll under tires, so it works best as the top 2 inches over 4 or more inches of crusher run.
Does #57 stone compact?
Not much. With no fines it settles and locks a little, but it never forms a hard, tight surface the way crusher run does. That open structure is exactly why it drains so well.
Other products and tools
Need #57 stone for a drain or wall?
Call with your tonnage and whether you are picking up or need delivery. We will give you current pricing on the phone.