Difference between revisions of "Sand"
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*Coarse sand for LID construction shall be clean and free free of toxic materials. | *Coarse sand for LID construction shall be clean and free free of toxic materials. | ||
| − | *The pH of the sand shall be ≤ 7.0. Manufactured sand from limestone or dolostone parent material is not acceptable. | + | *The pH of the sand shall be ≤ 7.0. Manufactured sand from limestone or dolostone parent material is not acceptable. |
*The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to [https://www.astm.org/Standards/C33 ASTM C33/C33M], or otherwise meet the gradation below. | *The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to [https://www.astm.org/Standards/C33 ASTM C33/C33M], or otherwise meet the gradation below. | ||
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!style="background: darkcyan; color: white"|Sieve | !style="background: darkcyan; color: white"|Sieve | ||
!style="background: darkcyan; color: white"|Percent passing | !style="background: darkcyan; color: white"|Percent passing | ||
| − | |||
|- | |- | ||
|9.5 mm||100 | |9.5 mm||100 | ||
Revision as of 12:38, 21 August 2017
- Coarse sand for LID construction shall be clean and free free of toxic materials.
- The pH of the sand shall be ≤ 7.0. Manufactured sand from limestone or dolostone parent material is not acceptable.
- The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to ASTM C33/C33M, or otherwise meet the gradation below.
| Sieve | Percent passing |
|---|---|
| 9.5 mm | 100 |
| 4.75 mm (No.4) | 95-100 |
| 2.36 mm (No.8) | 80-100 |
| 1.18 mm (No.16) | 50-85 |
| 0.60 mm (No.30) | 25-85 |
| 0.30 mm (No.50) | 5-30 |
| 0.15 mm (No.100) | 0-10 |
| 0.075 mm (No.200) | ≤ 3< |