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1. What is the Water Content of Soil?
✔ The water content of soil mass may be defined as a quantitative measure of the wetness of a soil sample.
✔ Water content can also be defined as the ratio of water’s weight to soil’s.
2. Determination of Water Content For Soil
The percent of water content shall be calculated as follows:
w = [ ( W 2 − W 3 )/( W 3 − W 1 ) ] × 100%
Here,
w is Water Content %
W1 is the mass of a container (bowl) in gram
W2 is a mass of container (bowl) with wet soil in gram
W3 is a mass of container (bowl) with dry soil in gram
Here are the recommended quantities for general laboratory usage:
| Sr. No. | Particle Size (μm) | IS Sieve Size | Minimum Quantity (gm) |
|---|---|---|---|
| 1 | > 425 μm | 425 μm | 25 |
| 2 | > 2.2 mm | 2.2 mm | 50 |
| 3 | > 4.75 mm | 4.75 mm (No. 4) | 200 |
| 4 | > 9.5 mm | 9.5 mm (3/8″) | 300 |
| 5 | > 19 mm | 19 mm (3/4″) | 500 |
| 6 | > 37.5 mm | 37.5 mm (1.5″) | 1000 |
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| Verified Article By Er. Madhu Krishna Poudel |
