Gravel Size Gradation Chart
Which Size Gravel Stone to Choose
The chart below is a guide to the stone size range of our gravel and decorative products:
| Size | Stone | Pea Stone | Screenings | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US | MM | #1 | #2 | #4 | #5 | #57 | #67 | #7 | #8 | #89 | #9 | #10 |
| 4" | 101.6 | . | ||||||||||
| 3 1/2" | 88.9 | X | ||||||||||
| 3" | 76.2 | X | . | |||||||||
| 2 1/2" | 63.5 | X | X | |||||||||
| 2" | 50.8 | X | X | . | ||||||||
| 1 1/2" | 38.1 | .. | X | X | . | . | ||||||
| 1" | 25.4 | . | .. | X | X | X | . | |||||
| 3/4" | 19.1 | . | .. | X | X | X | . | |||||
| 1/2" | 12.7 | .. | .. | X | X | X | . | . | ||||
| 3/8" | 9.5 | . | . | X | X | X | X | X | . | . | ||
| 3/16" | 4.8 | . | . | . | X | X | X | X | ||||
| 3/32" | 2.4 | . | X | X | X | |||||||
| 1/16" - 0 | 0-1.6 | . | .. | .. | X | |||||||
(X) = Stone largely consists of this size
(..) = Stone can consist of up to 15% of this size
(.) = Stone can consist of up to 10% of this size
Each stone gradation can contain up to 10% upper and lower grades and some fine material (sand).
In the Upper Range of Our Stone Sizing — 4" down to 2"
This covers products such as Rip Rap (can be significantly larger, depending on the chosen product), Large Beach Pebbles, and Red Rock. Their weight makes them a sturdy and excellent decorative stone, especially for creating borders and outlining gardens and driveways.
In the Mid Range of Our Stone Sizing — 2" down to 1/2"
This covers products such as Granite and Limestone Gravel, along with River Rock and Recycled Crushed Concrete — all excellent choices for driveways, with similar functional properties and differing aesthetics.
In the Lower Range of Our Stone Sizing — 1/2" down to fines (industry term for sand, stone dust, and tiny particles)
Products in this range are notably more compactible and suited for creating a base layer — products such as Crusher Run, Screenings, Sand, and Soil.
Recommended Stone Sizes for Common Applications
- For support of heavy vehicles — choose our #3 or #4 stone
- For standard driveways — choose our #57 or #67
- For more decorative driveways — choose our 1/2" to 2" river gravel
- For driveways/paths more comfortable to walk upon — choose our #89
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