1. What is Bulk Specific Gravity to Unit Weight Calculator?

Definition: This calculator converts bulk specific gravity to unit weight using water density and gravitational acceleration.

Purpose: It helps engineers and construction professionals determine the unit weight of materials for structural calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \gamma \) — Unit weight (N/m³)
• \( SG_{bulk} \) — Bulk specific gravity (unitless)
• \( \rho_{water} \) — Water density (1000 kg/m³)
• \( g \) — Gravitational acceleration (9.81 m/s²)

Explanation: The bulk specific gravity is multiplied by water density and gravity to obtain the material's unit weight.

3. Importance of Unit Weight Calculation

Details: Unit weight is crucial for structural design, load calculations, and material selection in construction projects.

4. Using the Calculator

Tips: Enter the bulk specific gravity (default values: 2.65 for quartz, 2.7 for granite), water density (default 1000 kg/m³), and gravity (default 9.81 m/s²).

5. Frequently Asked Questions (FAQ)

Q1: What is bulk specific gravity?
A: It's the ratio of the density of a material to the density of water at 4°C.

Q2: Why use water density in the calculation?
A: Since specific gravity is defined relative to water density, we need it to convert back to absolute units.

Q3: What's the typical unit weight of concrete?
A: Normal weight concrete typically has a unit weight of about 23,500-24,000 N/m³.

Q4: Can I use this for other materials besides concrete?
A: Yes, this calculation works for any material where you know the bulk specific gravity.

Q5: How does temperature affect the calculation?
A: Water density changes slightly with temperature, but for most engineering purposes, 1000 kg/m³ is sufficiently accurate.