This calculator helps you estimate the amount of asphalt millings needed for your project and the approximate cost. Asphalt millings, also known as reclaimed asphalt pavement (RAP), are recycled materials from old asphalt surfaces. They are commonly used for driveways, parking lots, and temporary roads due to their cost-effectiveness and environmental benefits.
function calculateAsphaltMillings() {
var length = parseFloat(document.getElementById("drivewayLength").value);
var width = parseFloat(document.getElementById("drivewayWidth").value);
var depthInches = parseFloat(document.getElementById("millingsDepth").value);
var costPerTon = parseFloat(document.getElementById("costPerTon").value);
var deliveryCostPerTon = parseFloat(document.getElementById("deliveryCost").value);
var resultDiv = document.getElementById("calculationResult");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(length) || isNaN(width) || isNaN(depthInches) || isNaN(costPerTon) || isNaN(deliveryCostPerTon)) {
resultDiv.innerHTML = "Please enter valid numbers for all fields.";
return;
}
if (length <= 0 || width <= 0 || depthInches <= 0 || costPerTon < 0 || deliveryCostPerTon < 0) {
resultDiv.innerHTML = "Please enter positive values for dimensions and non-negative costs.";
return;
}
// Convert depth from inches to feet
var depthFeet = depthInches / 12;
// Calculate the volume in cubic feet
var volumeCubicFeet = length * width * depthFeet;
// Convert cubic feet to cubic yards (approximately 2000 lbs per cubic yard for compacted millings)
var volumeCubicYards = volumeCubicFeet / 27;
// Estimate tons needed (assuming ~2000 lbs/cubic yard after compaction, but millings are often less dense initially)
// A common rule of thumb is about 0.8 tons per cubic yard for loose millings, or 1 ton for compacted.
// Let's use a conservative estimate and assume ~1.2 tons per cubic yard for planning to be safe.
var tonsNeeded = volumeCubicYards * 1.2;
// Calculate the total cost
var materialCost = tonsNeeded * costPerTon;
var totalDeliveryCost = tonsNeeded * deliveryCostPerTon;
var totalEstimatedCost = materialCost + totalDeliveryCost;
resultDiv.innerHTML = "