1. What is Specific Gravity given Void Ratio?

Definition: This calculator determines the specific gravity of soil based on the void ratio and water content for fully saturated soil.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( G_s \) — Specific Gravity of Soil
• \( e \) — Void Ratio (volume of voids to volume of solids)
• \( w_s \) — Water Content of Soil (ratio of weight of water to weight of solids)

Explanation: The void ratio is divided by the water content (in decimal form) to determine the specific gravity of the soil.

3. Importance of Specific Gravity Calculation

Details: Specific gravity is crucial for determining soil density, porosity, and other properties that affect construction stability and water retention.

4. Using the Calculator

Tips: Enter the void ratio (unitless) and water content (as a percentage). The calculator automatically converts the water content to decimal form for calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical void ratio for soils?
A: Void ratios typically range from 0.3 for dense sands to 1.5 or more for soft clays.

Q2: How is water content measured?
A: Water content is measured as the ratio of water weight to solids weight, often determined by oven-drying a soil sample.

Q3: What does specific gravity tell us about soil?
A: Specific gravity indicates how dense the soil particles are compared to water, affecting permeability and strength.

Q4: Why is this specific to fully saturated soil?
A: The relationship assumes all voids are filled with water, which simplifies the calculation for saturated conditions.

Q5: How accurate is this calculation?
A: Accuracy depends on precise measurement of void ratio and water content. Consider laboratory testing for critical applications.

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