Drainage and Filter Materials: Selection Criteria and Terzaghi's Rule
A drainage layer must pass water and hold back soil. Learn Terzaghi's filter criteria, material cleanliness and how to place French drains and geotextiles.
4.75–25 mm
Gravel
Pea Gravel 4.75–12.5
Pea gravel
Fine coarse aggregate for heavily reinforced concrete, pumped concrete and drainage layers.
4.75–12.5 mm
Properties and technical role
With its smaller maximum size, pea gravel passes more easily through dense reinforcement and narrow formwork. This suits it to pumped concrete and thin sections.
Besides concrete uses, this material also serves in drainage layers and filters.
Quality information
| Method | Test |
|---|---|
| ASTM C136 | Sieve analysis |
| ASTM C131 | Los Angeles abrasion |
Reference gradingASTM C33
Size number 7 (4.75 to 12.5 mm)
Limits on percent passing each sieve, based on ASTM C33. These are limits from the reference standard, not test results from a shipment. The current edition of the standard and the project specification are the final authority.
19 mm100%
12.5 mm90–100%
9.5 mm40–70%
4.75 mm0–15%
2.36 mm0–5%
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Inquire about Pea gravel
The grading on offer, stock and supply terms for this product are confirmed at the time of inquiry.