Specific Gravity given Void Ratio in Specific Gravity Calculator

Specific Gravity Formula:

\[ G_s = \frac{e \times S}{w_s} \]

Specific Gravity (G_s):

1. What is Specific Gravity given Void Ratio?

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

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:

\[ G_s = \frac{e \times S}{w_s} \]

Where:

\( G_s \) — Specific gravity of soil
\( e \) — Void ratio (volume of voids to volume of solids)
\( S \) — Degree of saturation (percentage)
\( w_s \) — Water content (percentage)

Explanation: The formula relates the void ratio and saturation to the specific gravity through the water content.

3. Importance of Specific Gravity Calculation

Details: Specific gravity is crucial for determining soil density, porosity, and for calculating other important soil properties in geotechnical engineering.

4. Using the Calculator

Tips: Enter the void ratio (dimensionless), degree of saturation (%), and water content (%). All values must be > 0 except saturation which can be 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical void ratio range?
A: For most soils, void ratio ranges from 0.3 (dense soils) to 1.0 (loose soils).

Q2: How is degree of saturation measured?
A: It's typically determined through laboratory tests measuring water content and void ratio.

Q3: What's a normal specific gravity range for soils?
A: Most mineral soils have specific gravity between 2.60 and 2.80.

Q4: Why is water content expressed as percentage?
A: It's the ratio of water weight to solids weight, expressed as percentage for convenience.

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