Asphalt Tonnage Formula:
From: | To: |
Definition: This calculator converts an area measurement in square yards to weight in tons for asphalt paving projects.
Purpose: It helps contractors and engineers determine how much asphalt is needed based on project area and desired thickness.
The calculator uses the formula:
Where:
Explanation: The formula calculates volume in cubic yards, applies the density factor, and converts to tons.
Details: Proper calculation ensures you order the right amount of material, avoiding costly overages or project delays from shortages.
Tips: Enter the area in square yards and desired depth in inches. Both values must be > 0.
Q1: Why is 110 used as the density factor?
A: This represents the typical weight of hot mix asphalt (about 145 lbs per cubic foot or 110 lbs per square yard per inch).
Q2: Does this work for all asphalt types?
A: The 110 factor works for most hot mix asphalt. For specialized mixes, consult your supplier for exact density.
Q3: How do I measure the area accurately?
A: Break irregular areas into rectangles, calculate each, and sum them. For precise measurements, use surveying tools.
Q4: Should I include compaction in my depth?
A: No, enter the desired compacted depth. The calculation already accounts for compaction through the density factor.
Q5: How much extra should I order?
A: Typically add 5-10% to account for waste, uneven surfaces, and compaction variations.