Wilson 3/4" Class IV Baserock
Similar to Wilson 3/4" Class II Baserock, Wilson 3/4" Class IV Baserock is well-graded crushed granite. It has a higher percentage of fines than Cls II, which makes it a little easier to grade and compact. Uses include compacted base material under concrete, asphalt, and pavers. It can also be used as a driveway or pathway material, and meets Cal Trans Section 25-1 for aggregate subbase.
ASTM Properties
| Sand Equivalent | Greater than or equal to 35 |
| "R" Value | Greater than or equal to 80 |
| Coarse Durability | Greater than or equal to 60 |
| Fine Durability | Greater than or equal to 42 |
Sieve Analysis
| Inches | MM/UM | Grading* |
|---|---|---|
| 1-1/2" | 37.5 mm | 10 |
| 1" | 25 mm | 10 |
| 3/4" | 19 mm | 96 |
| #4 | 4.75 mm | 60 |
| #30 | 600 um | 25 |
| #200 | 75 um | 14 |
*Grading results are typical
Branch Availability
-
- A.R. Wilson Quarry
- 1900 Quarry Road
- Aromas, CA 95004
- 831.768.2380
Wilson 3/4" Class IV Baserock
