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Unit Weight of Water Given Specific Gravity of Soil Calculator

Unit Weight of Water Formula:

\[ \gamma_{water} = \frac{\gamma_s}{G_s} \]

N/m³
N/m³

1. What is Unit Weight of Water Given Specific Gravity of Soil?

Definition: This calculator determines the unit weight of water based on the unit weight of solids and the specific gravity of soil.

Purpose: It helps geotechnical engineers and soil scientists understand the relationship between soil properties and water content.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \gamma_{water} = \frac{\gamma_s}{G_s} \]

Where:

  • \( \gamma_{water} \) — Unit weight of water (N/m³)
  • \( \gamma_s \) — Unit weight of solids (N/m³)
  • \( G_s \) — Specific gravity of soil (dimensionless)

Explanation: The unit weight of solids is divided by the specific gravity of soil to obtain the unit weight of water.

3. Importance of Unit Weight of Water Calculation

Details: Understanding this relationship is crucial for soil mechanics calculations, including porosity, void ratio, and degree of saturation.

4. Using the Calculator

Tips: Enter the unit weight of solids in N/m³ and the specific gravity of soil (±5%). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is typical unit weight of solids?
A: For most soils, unit weight of solids ranges from 25,000 to 27,000 N/m³.

Q2: Why is specific gravity given with ±5%?
A: Specific gravity can vary slightly depending on soil composition and moisture content.

Q3: What's the standard unit weight of water?
A: Pure water at 4°C has a unit weight of about 9,810 N/m³.

Q4: How does temperature affect the calculation?
A: Temperature affects water density, but this calculator assumes standard conditions.

Q5: Can I use this for other liquids?
A: No, this is specific to water in soil systems. Other liquids have different properties.

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