1. What is Unit Weight of Asphalt?

Definition: The unit weight of hot mix asphalt is typically 145 pounds per cubic foot (lb/ft³).

Purpose: This calculator helps determine the total weight of asphalt based on its volume.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Weight — Total weight of asphalt (pounds)
• Volume — Volume of asphalt (cubic feet)
• ρ (rho) — Unit weight of asphalt (145 lb/ft³)

Explanation: The volume is multiplied by the standard unit weight to get the total weight.

3. Importance of Asphalt Weight Calculation

Details: Accurate weight calculations are crucial for structural design, transportation planning, and material cost estimation.

4. Using the Calculator

Tips: Simply enter the volume of asphalt in cubic feet. The calculator uses the standard unit weight of 145 lb/ft³.

5. Frequently Asked Questions (FAQ)

Q1: Why 145 lb/ft³ for asphalt?
A: This is the standard unit weight for hot mix asphalt, though actual values may vary slightly based on mix design.

Q2: How do I convert cubic yards to cubic feet?
A: Multiply cubic yards by 27 (since 1 yd³ = 27 ft³).

Q3: Does this account for compaction?
A: The 145 lb/ft³ value already accounts for typical compaction of hot mix asphalt.

Q4: How accurate is this calculation?
A: It provides a good estimate, but actual weights may vary ±5% based on specific mix and temperature.

Q5: Can I use this for cold mix asphalt?
A: No, cold mix typically has a different unit weight (around 130-140 lb/ft³).