1. What is Void Ratio given Specific Gravity?

Definition: This calculator determines the void ratio of soil based on water content, specific gravity, and degree of saturation.

Purpose: It helps geotechnical engineers and soil scientists analyze soil properties for construction and agricultural applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( e \) — Void ratio (dimensionless)
• \( w_s \) — Water content of soil (%)
• \( G_s \) — Specific gravity of soil (dimensionless)
• \( S \) — Degree of saturation (%)

Explanation: The void ratio is calculated by multiplying water content by specific gravity, then dividing by the degree of saturation.

3. Importance of Void Ratio Calculation

Details: Void ratio is crucial for understanding soil compressibility, permeability, and strength characteristics in geotechnical engineering.

4. Using the Calculator

Tips: Enter water content (%), specific gravity, and degree of saturation (%). All values must be > 0, and saturation ≤ 100%.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical void ratio range?
A: Common values range from 0.4 (dense soils) to 1.0 (loose soils), with clays often higher.

Q2: How does specific gravity affect void ratio?
A: Higher specific gravity soils typically have lower void ratios for the same water content.

Q3: What if my degree of saturation is 100%?
A: At full saturation (100%), the void ratio equals water content × specific gravity.

Q4: Can void ratio be less than zero?
A: No, void ratio is always positive (e ≥ 0).

Q5: How accurate is this calculation?
A: Accuracy depends on precise measurement of input parameters (±5% typical).

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