Asphalt per Square Foot Calculator by Tons of Concrete

Asphalt Weight Formula:

\[ W_{sf} = \frac{D \times \rho}{12} \]

Weight per Square Foot (lb/ft²):

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1. What is an Asphalt per Square Foot Calculator?

Definition: This calculator estimates the weight of asphalt per square foot based on the depth of asphalt and its density.

Purpose: It helps construction professionals and paving contractors determine the weight load of asphalt for structural planning and material estimation.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W_{sf} = \frac{D \times \rho}{12} \]

Where:

\( W_{sf} \) — Weight per square foot (lb/ft²)
\( D \) — Depth of asphalt (inches)
\( \rho \) — Density of asphalt (lb/ft³)

Explanation: The depth in inches is multiplied by density and divided by 12 to convert inches to feet for proper units.

3. Importance of Asphalt Weight Calculation

Details: Accurate weight calculations are crucial for structural support requirements, pavement design, and proper material ordering.

4. Using the Calculator

Tips: Enter the asphalt depth in inches and density in lb/ft³ (default 145 lb/ft³ for typical hot-mix asphalt). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density of asphalt?
A: Hot-mix asphalt typically weighs about 145 lb/ft³, but can range from 140-150 lb/ft³ depending on mix design.

Q2: How does temperature affect the calculation?
A: The calculation uses density at standard temperature. Actual weight may vary slightly with temperature changes.

Q3: Can I use this for multiple layers?
A: Yes, either calculate each layer separately and sum the results, or use the total combined depth.

Q4: How do I convert this to total weight for a project?
A: Multiply the weight per square foot by the total square footage of your project area.

Q5: Does this account for compaction?
A: The density value should reflect the compacted density of your asphalt mix.