What Is #57 Stone?
#57 stone is a washed, crushed aggregate graded to the ASTM #57 specification. The individual pieces run roughly 3/4 inch to 1 inch — angular, clean-edged, and uniform. "Washed" means the fine particles have been removed. There's no dust, no sand, and no silt binding the pieces together.
That absence of fines is the whole point. Water moves straight through #57 stone without resistance, which is why it's the most widely specified drainage aggregate in residential and commercial construction in Missouri. When a set of plans calls for "drainage stone" without further specification, #57 is almost always what they mean.
In Jefferson County, the material is limestone-based — the same parent rock that underlies most of the region. Angular fracture faces lock against each other reasonably well for surface applications while still allowing free water movement through the voids.
What Is #4 Stone?
#4 stone is the same washed, angular crushed limestone — just larger. The pieces run 1 inch to 1.5 inches, making each piece roughly twice the volume of a #57 piece. The larger size creates larger interstitial voids, which increases drainage rate and flow capacity.
#4 is less commonly spec'd on residential projects, but it's the right call when the drainage application demands more capacity: large-diameter pipe bedding, high-flow underdrain systems, and situations where significant load sits directly above the drainage layer. It's stocked at the J1S yard and available on the same delivery schedule as #57.
Side-by-Side Comparison
ASTM #57 vs. #4 Stone — Quick Reference
| Property | #57 Stone | #4 Stone |
|---|---|---|
| Nominal size | 3/4"–1" | 1"–1.5" |
| Drainage rate | High | Very high |
| Void ratio | ~40% | ~42% |
| Typical use | French drains, pipe bedding, foundation drainage | Large-diameter pipe bedding, heavy drainage applications |
| Available at J1S? | Yes | Yes |
Where #57 Is the Standard Choice
For the overwhelming majority of drainage applications in Jefferson County, #57 is the correct material. Its size hits a practical sweet spot — small enough to work around standard 4-inch and 6-inch perforated pipe, large enough to drain freely, and uniform enough to look clean in visible installations.
- French drain fill: The most common use. #57 surrounds the perforated pipe, allows water to enter, and channels it away from the structure. Standard spec is 6 to 12 inches of stone around the pipe wrapped in geotextile fabric.
- Pipe bedding (residential): Under 4-inch and 6-inch utility lines, #57 provides a stable, draining bed that prevents differential settlement and allows any infiltration to escape rather than accumulate.
- Foundation drainage: Placed against footing drains and foundation walls, #57 keeps hydrostatic pressure from building against the wall by continuously directing water down to the drain.
- Capillary break under slabs: A 4-inch layer of #57 under a concrete slab breaks the capillary path between soil moisture and the slab, reducing moisture infiltration through the slab floor.
- Visible decorative areas: #57 looks clean and uniform in exposed applications — around landscaping beds, under decks, or as a low-maintenance surface in tight areas.
Where #4 Stone Outperforms #57
The larger void structure of #4 stone matters in specific applications. If you're moving significant volumes of water or bedding large-diameter pipe, the extra flow capacity justifies the slight size increase.
- Large-diameter pipe bedding: Bedding 8-inch, 10-inch, or 12-inch sewer and stormwater pipe calls for larger aggregate. The pipe diameter is large enough that #4 stone seats properly and provides better contact. Using #57 under large pipe can allow point loading and line deformation over time.
- High-flow drainage: Where water volume is high — a low point that drains a large area, or a stormwater underdrain handling runoff from a significant impervious surface — #4's larger voids move water faster and clog more slowly.
- Heavy-load drainage layers: When substantial load sits directly above the drainage stone (heavy equipment pads with underslab drainage, for example), the larger aggregate distributes load slightly better and is less prone to migration under cyclic loading.
What They Share
Both materials behave the same way in the ways that matter most for installation:
- Neither compacts. The washed, angular aggregate will not bind together and will not provide structural support. Do not use either to replace a compacted base layer.
- Both drain freely. Water moves through both materials rapidly. The difference between them is degree, not kind — both are high-drainage aggregates.
- Both require geotextile fabric in drainage applications. Without filter fabric, soil fines migrate into the stone voids over time, gradually clogging the drainage path and reducing effectiveness. Fabric is not optional for long-term performance.
- Both are limestone-based in Missouri. The same parent material, same angular fracture character, same general durability in Missouri's freeze-thaw environment.
Neither is a structural base. This is worth stating directly: #57 and #4 stone will not compact, which means they provide no structural load support. They are drainage materials. If you need a structural base for a driveway, slab, or pavement, you need crusher run — a material that contains the full gradation of fines and compacts to a dense, stable layer.
Jefferson County Specifications
Local specs in Jefferson County align with standard ASTM practice. Residential drainage permits for new construction typically call out #57 by name. Commercial and municipal stormwater projects may spec #4 or larger for underdrain systems depending on the drainage area and pipe sizing. If you're pulling a permit or working to engineered plans, the spec sheet will tell you which gradation is required. If you're doing residential work without formal specs, #57 is almost always the right default.
J1S can advise on which material is appropriate for your project type. Call before ordering if you're working from drawings — the spec matters, and the price difference between #57 and #4 is minor enough that there's no reason to guess wrong.
How Much to Order
Both materials use the same coverage formula. To calculate cubic yards:
Length (ft) × Width (ft) × Depth (in) ÷ 324 = cubic yards
As a rough benchmark: 1 cubic yard covers approximately 100 square feet at 3 inches depth. For a French drain, calculate the linear footage of the trench, the trench width, and the depth of stone — typically 6 to 12 inches of stone surrounding the pipe. A 100-foot French drain with a 2-foot-wide stone envelope at 12 inches depth runs about 7.5 cubic yards.
J1S delivers both materials by the yard. Quad-axle trucks run 14 cubic yards. For smaller quantities, contact us about options.