1. What is Dry Density in Soil Mechanics?

Dry Density in Soil Mechanics is the ratio of mass of dry soil to its volume. It is a fundamental property used in geotechnical engineering to assess soil compaction and stability.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho_{ds} \) — Dry Density (kg/m³)
• \( G_s \) — Specific Gravity of Soil
• \( \rho_w \) — Density of Water (kg/m³)
• \( e \) — Void Ratio

Explanation: The formula calculates the dry density of soil based on the specific gravity of soil particles, density of water, and the void ratio of the soil.

3. Importance of Dry Density Calculation

Details: Dry density is crucial for determining soil compaction quality, bearing capacity, and settlement characteristics in construction projects.

4. Using the Calculator

Tips: Enter specific gravity of soil, density of water in kg/m³, and void ratio. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for specific gravity of soil?
A: Most common soil minerals have specific gravity values between 2.6 and 2.8.

Q2: What is the standard density of water used in calculations?
A: The density of water is typically taken as 1000 kg/m³ at 4°C, though it varies slightly with temperature.

Q3: What does void ratio indicate about soil?
A: Void ratio indicates the porosity and compaction of soil. Lower void ratios generally indicate more compacted soils.

Q4: How is dry density different from bulk density?
A: Dry density considers only the solid particles, while bulk density includes both solids and voids in the volume measurement.

Q5: What are typical dry density values for different soil types?
A: Dry density varies by soil type: sands 1500-1800 kg/m³, clays 1300-1600 kg/m³, depending on compaction and moisture content.