Basalt Weight Calculator

Basalt Weight Calculator & Guide – Calculate Your Basalt Needs :root { –primary-color: #004a99; –secondary-color: #007bff; –success-color: #28a745; –light-gray: #f8f9fa; –medium-gray: #dee2e6; –dark-gray: #343a40; –white: #ffffff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: var(–dark-gray); background-color: var(–light-gray); margin: 0; padding: 0; display: flex; justify-content: center; padding: 20px; } .container { max-width: 1000px; width: 100%; background-color: var(–white); padding: 30px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); } header { text-align: center; margin-bottom: 30px; border-bottom: 1px solid var(–medium-gray); padding-bottom: 20px; } header h1 { color: var(–primary-color); margin-bottom: 10px; } .calculator-section { background-color: var(–white); padding: 25px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); margin-bottom: 30px; } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; } .input-group { display: flex; flex-direction: column; } .input-group label { font-weight: bold; margin-bottom: 8px; color: var(–primary-color); } .input-group input, .input-group select { padding: 12px; border: 1px solid var(–medium-gray); border-radius: 4px; font-size: 1rem; transition: border-color 0.3s ease; } .input-group input:focus, .input-group select:focus { border-color: var(–secondary-color); outline: none; } .input-group small { color: #6c757d; font-size: 0.85rem; margin-top: 5px; } .error-message { color: var(–error-color); font-size: 0.85rem; margin-top: 5px; display: none; /* Hidden by default */ } .btn-group { display: flex; gap: 10px; margin-top: 20px; } .btn { padding: 12px 20px; border: none; border-radius: 4px; cursor: pointer; font-size: 1rem; font-weight: bold; transition: background-color 0.3s ease, transform 0.2s ease; text-transform: uppercase; } .btn-primary { background-color: var(–primary-color); color: var(–white); } .btn-primary:hover { background-color: #003d80; transform: translateY(-1px); } .btn-secondary { background-color: var(–secondary-color); color: var(–white); } .btn-secondary:hover { background-color: #0056b3; transform: translateY(-1px); } .btn-reset { background-color: var(–medium-gray); color: var(–dark-gray); } .btn-reset:hover { background-color: #adb5bd; transform: translateY(-1px); } .results-container { margin-top: 30px; padding: 25px; background-color: var(–primary-color); color: var(–white); border-radius: 8px; text-align: center; box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1); } .results-container h2 { margin-bottom: 15px; font-size: 1.8rem; color: var(–white); } .primary-result { font-size: 2.5rem; font-weight: bold; margin-bottom: 20px; color: #ffff00; /* Highlight color */ } .results-details { display: flex; flex-wrap: wrap; justify-content: center; gap: 25px; margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.2); } .result-item { text-align: center; } .result-item-label { font-size: 1rem; opacity: 0.8; margin-bottom: 5px; } .result-item-value { font-size: 1.4rem; font-weight: bold; } .chart-container { margin-top: 30px; padding: 25px; background-color: var(–white); border-radius: 8px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); text-align: center; } .chart-container h3 { color: var(–primary-color); margin-bottom: 20px; } canvas { max-width: 100%; height: auto !important; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { padding: 12px 15px; border: 1px solid var(–medium-gray); text-align: right; } th { background-color: var(–primary-color); color: var(–white); font-weight: bold; text-align: center; } td { background-color: var(–white); } tr:nth-child(even) td { background-color: var(–light-gray); } caption { caption-side: top; font-weight: bold; font-size: 1.1rem; color: var(–dark-gray); margin-bottom: 15px; text-align: center; } .article-section { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(–medium-gray); } .article-section h2, .article-section h3 { color: var(–primary-color); margin-bottom: 15px; } .article-section h2 { font-size: 2rem; } .article-section h3 { font-size: 1.5rem; } .article-section p, .article-section ul, .article-section ol { margin-bottom: 20px; } .article-section ul li, .article-section ol li { margin-bottom: 10px; } .faq-item { margin-bottom: 15px; } .faq-item strong { color: var(–primary-color); display: block; margin-bottom: 5px; } .internal-links { margin-top: 30px; padding: 20px; background-color: var(–white); border-radius: 8px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); } .internal-links h3 { color: var(–primary-color); margin-bottom: 15px; } .internal-links ul { list-style: none; padding: 0; } .internal-links li { margin-bottom: 10px; } .internal-links a { color: var(–secondary-color); text-decoration: none; font-weight: bold; } .internal-links a:hover { text-decoration: underline; } .link-explanation { font-size: 0.9rem; color: #6c757d; margin-left: 10px; } .formula-explanation { font-style: italic; color: #6c757d; margin-top: 10px; } .variable-table th, .variable-table td { text-align: left; } .variable-table th:first-child, .variable-table td:first-child { text-align: left; font-weight: bold; }

Basalt Weight Calculator

Accurately estimate the weight of basalt for your projects.

Enter the length of the basalt piece (in meters).
Enter the width of the basalt piece (in meters).
Enter the height or thickness of the basalt piece (in meters).
Enter the density of basalt (typical is 2900 kg/m³).

Your Basalt Weight Estimate

–.– kg
Volume
–.– m³
Weight (Metric Tons)
–.– t
Weight (Pounds)
–.– lbs

Weight = Volume × Density. Volume = Length × Width × Height.

Basalt Weight vs. Volume Analysis

Weight of Basalt for Varying Volumes (at 2900 kg/m³)

Basalt Weight Breakdown

Contribution of Dimensions to Total Weight

What is Basalt?

Basalt is a fundamental volcanic rock, characterized by its dark color, fine-grained texture, and igneous origin. It forms from the rapid cooling of basaltic lava exposed at or very near the surface of a terrestrial planet or a moon. Basalt is one of the most common rock types on Earth, playing a crucial role in the formation of oceanic crust and continental flood basalts. Its unique properties, including high density, durability, and thermal resistance, make it a valuable material in various applications, from construction and road building to decorative landscaping and industrial uses.

Who should use a basalt weight calculator? This basalt weight calculator is invaluable for engineers, construction project managers, landscapers, quarry operators, material suppliers, architects, and anyone involved in the procurement or handling of basalt. Whether you're estimating the load-bearing capacity of a structure, calculating shipping costs, ordering aggregate for a project, or designing a garden feature, knowing the precise weight of the basalt you'll be using is critical for planning and budgeting.

Common Misconceptions about Basalt: A frequent misconception is that all basalt is uniform in density and color. In reality, basalt can vary in its exact density (though 2900 kg/m³ is a strong average) due to mineral composition and cooling processes. Some may also assume basalt is brittle, but its toughness and resistance to abrasion are defining characteristics. Another myth is that basalt is only used for industrial purposes; its aesthetic appeal also makes it a popular choice for elegant paving stones, countertops, and architectural elements.

Basalt Weight Calculation: Formula and Explanation

Calculating the weight of a basalt piece is a straightforward application of basic physics principles, specifically the relationship between volume, density, and mass. The core formula is: Weight (Mass) = Volume × Density.

Step-by-Step Derivation:

  1. Determine the Volume: For a rectangular piece of basalt (the most common assumption for bulk calculations), the volume is calculated by multiplying its three primary dimensions: Length, Width, and Height (or Thickness).
    Volume = Length × Width × Height
  2. Identify the Density: Basalt has a characteristic density, which is the mass per unit volume. The typical density for basalt is approximately 2900 kilograms per cubic meter (kg/m³). This value can vary slightly based on specific mineral compositions and the presence of voids, but 2900 kg/m³ is a widely accepted average.
  3. Calculate the Weight: Multiply the calculated volume by the density of basalt.
    Weight (kg) = Volume (m³) × Density (kg/m³)

Variable Explanations:

To ensure accurate calculations, it's important to understand the variables involved:

Variable Meaning Unit Typical Range
Length (L) The longest dimension of the basalt piece. Meters (m) 0.1 m to 10+ m
Width (W) The dimension perpendicular to the length. Meters (m) 0.1 m to 5+ m
Height (H) / Thickness The dimension perpendicular to both length and width. Meters (m) 0.05 m to 2+ m
Volume (V) The amount of space the basalt occupies. Cubic Meters (m³) Calculated (V = L × W × H)
Density (ρ) Mass per unit volume of basalt. Kilograms per cubic meter (kg/m³) 2800 – 3000 kg/m³ (Average: 2900 kg/m³)
Weight (M) The total mass of the basalt. Kilograms (kg), Metric Tons (t) Calculated (M = V × ρ)

Note: 1 metric ton (t) = 1000 kilograms (kg).

Practical Examples of Basalt Weight Calculation

Understanding the basalt weight calculator becomes clearer with real-world scenarios:

Example 1: Landscaping Project

A landscaper needs to calculate the weight of several basalt columns for a garden feature. Each column is approximately 1.5 meters long, with an average diameter (approximated as a square for calculation) of 0.4 meters by 0.4 meters. The typical basalt density is 2900 kg/m³.

  • Inputs:
    • Length: 1.5 m
    • Width: 0.4 m
    • Height (Thickness): 0.4 m
    • Density: 2900 kg/m³
  • Calculation:
    • Volume = 1.5 m × 0.4 m × 0.4 m = 0.24 m³
    • Weight = 0.24 m³ × 2900 kg/m³ = 696 kg
  • Results: Each basalt column weighs approximately 696 kg (or 0.696 metric tons). This weight is crucial for determining the required lifting equipment (e.g., small crane or heavy-duty trolley) and ensuring the ground can support the load.

Example 2: Construction Aggregate

A construction company is ordering crushed basalt (aggregate) for a road base. They need to estimate the weight for a specific volume of material. They require 50 cubic meters of aggregate, and the basalt density is confirmed at 2950 kg/m³ (slightly denser due to compaction).

  • Inputs:
    • Volume: 50 m³
    • Density: 2950 kg/m³
    • (Note: Length, Width, Height are not directly inputted here as Volume is given, but they implicitly form the 50 m³).
  • Calculation:
    • Weight = 50 m³ × 2950 kg/m³ = 147,500 kg
  • Results: The 50 cubic meters of crushed basalt aggregate will weigh approximately 147,500 kg, which is 147.5 metric tons. This information is vital for ordering the correct amount of material from the supplier and for logistics planning, including the capacity of delivery trucks and the weight distribution on site.

How to Use This Basalt Weight Calculator

Using our basalt weight calculator is simple and efficient:

  1. Input Dimensions: Enter the length, width, and height (thickness) of the basalt piece in meters into the respective fields. Be as accurate as possible. If dealing with irregular shapes, approximate the dimensions to the nearest meter or use average dimensions for rough estimates.
  2. Specify Density: The calculator defaults to a common basalt density of 2900 kg/m³. If you have a precise density value for your specific basalt type, enter it. Otherwise, the default value provides a reliable estimate.
  3. Calculate: Click the "Calculate Weight" button.
  4. Review Results: The calculator will instantly display:
    • Total Weight (kg): The primary result, showing the estimated mass in kilograms.
    • Volume (m³): The calculated volume of the basalt.
    • Weight (Metric Tons): The weight converted to metric tons for easier handling of larger quantities.
    • Weight (Pounds): The weight converted to pounds for those more familiar with imperial units.
  5. Interpret Findings: Use the calculated weight to inform decisions about transportation, structural support, material handling equipment, and project costs.
  6. Visualize Data: Examine the charts to understand how volume relates to weight and how different dimensions contribute to the overall mass. This can be helpful for comparing different basalt sizes or shapes.
  7. Copy or Reset: Use the "Copy Results" button to easily transfer the calculated data to reports or notes. Click "Reset" to clear all fields and start a new calculation.

Decision-Making Guidance: The results from this basalt weight calculator are crucial for practical applications. For instance, knowing the weight helps in selecting appropriate lifting machinery, ensuring compliance with weight limits on bridges or transport vehicles, and accurately estimating the quantity of material needed for large-scale projects like paving or aggregate supply. For landscaping, it ensures stability and prevents ground subsidence.

Key Factors Affecting Basalt Weight Results

While the calculator provides a precise estimate based on inputs, several real-world factors can influence the actual weight of basalt:

  • Density Variations: As mentioned, the specific mineral composition and cooling history of basalt can lead to variations in density. While 2900 kg/m³ is standard, some samples might be slightly lighter or heavier. Always consult supplier specifications if precision is paramount.
  • Moisture Content: Absorbed water increases the overall weight of basalt. Porous basalt, especially if freshly quarried or exposed to rain, can hold significant moisture, adding several percent to its weight. Ensure calculations consider if the basalt will be dry or wet.
  • Void Space and Porosity: Some basalt formations contain natural voids or vesicles (gas bubbles trapped during cooling). While typically fine-grained, significant porosity can slightly reduce the effective density and thus the weight compared to a perfectly solid piece.
  • Fractures and Inclusions: Natural basalt often contains fractures, cracks, or inclusions of other minerals. While our calculator assumes a solid block, significant internal fracturing can affect the overall density and structural integrity, indirectly impacting weight calculations if pieces break off.
  • Dimensional Accuracy: The precision of your input measurements directly impacts the calculated weight. Slight errors in measuring length, width, or height can lead to discrepancies, especially for large quantities.
  • Crushed vs. Solid Basalt: This calculator is primarily for solid basalt pieces. Crushed basalt (aggregate) has a different bulk density due to air gaps between the pieces. The density value used for aggregate calculations is often lower and depends on the grading and compaction of the material.
  • Temperature Effects: Although basalt's thermal expansion is relatively low compared to metals, extreme temperature fluctuations can cause minor changes in volume, and thus minuscule changes in weight. This is generally negligible for most practical purposes.

Frequently Asked Questions (FAQ)

Q1: What is the standard density of basalt used in calculations?

A1: The standard density typically used for basalt is around 2900 kg/m³. This calculator uses this value as a default, but it can vary slightly depending on the specific geological formation and mineral content.

Q2: Can I use this calculator for basalt rock chips or gravel?

A2: This calculator is best suited for solid pieces or blocks of basalt. For crushed basalt or gravel, the concept of bulk density (which accounts for air gaps between particles) is more relevant. The weight per cubic meter for gravel will be significantly less than for solid basalt.

Q3: How accurate are the results?

A3: The results are accurate based on the inputs provided and the assumed standard density. Real-world variations in density, moisture content, and exact dimensions can lead to slight differences in the actual weight.

Q4: My basalt piece is not perfectly rectangular. How should I measure it?

A4: For irregular shapes, try to measure the maximum length, width, and height to get an overall bounding box volume. Alternatively, measure multiple sections and average the dimensions for a more refined estimate. For very irregular pieces, calculating volume by water displacement might be more accurate but is impractical for large rocks.

Q5: What units should I use for the inputs?

A5: Please use meters (m) for all length, width, and height dimensions. The density should be in kilograms per cubic meter (kg/m³). The calculator will output results in kilograms, metric tons, and pounds.

Q6: Does moisture affect the weight significantly?

A6: Yes, especially for porous basalt. Absorbed water can add a noticeable amount to the total weight. If your basalt is expected to be wet, consider using a slightly higher density value or adding an estimated weight for water content.

Q7: What is the difference between weight and mass?

A7: Technically, this calculator calculates mass (measured in kilograms or tons). 'Weight' is often used colloquially to mean mass. On Earth, mass and weight are directly proportional due to gravity, so the distinction is often blurred in everyday use.

Q8: How can I use the weight calculation for shipping costs?

A8: Shipping costs are often based on weight and volume. Knowing the precise weight (in kg or tons) from this calculator allows you to get accurate quotes from shipping companies, as they will use this data to determine load capacity and pricing.

© 2023 Your Website Name. All rights reserved.

var lengthInput = document.getElementById('length'); var widthInput = document.getElementById('width'); var heightInput = document.getElementById('height'); var densityInput = document.getElementById('density'); var totalWeightDisplay = document.getElementById('totalWeight'); var volumeDisplay = document.getElementById('volume'); var weightTonsDisplay = document.getElementById('weightTons'); var weightPoundsDisplay = document.getElementById('weightPounds'); var resultsSection = document.getElementById('resultsSection'); var lengthError = document.getElementById('lengthError'); var widthError = document.getElementById('widthError'); var heightError = document.getElementById('heightError'); var densityError = document.getElementById('densityError'); var weightVolumeChartInstance = null; var weightBreakdownChartInstance = null; function validateInput(value, inputElement, errorElement, fieldName, minValue = 0, maxValue = Infinity) { var errorText = "; if (value === null || value === ") { errorText = fieldName + ' is required.'; } else { var numValue = parseFloat(value); if (isNaN(numValue)) { errorText = fieldName + ' must be a number.'; } else if (numValue maxValue) { errorText = fieldName + ' is too high.'; } } errorElement.textContent = errorText; errorElement.style.display = errorText ? 'block' : 'none'; inputElement.style.borderColor = errorText ? 'var(–error-color)' : 'var(–medium-gray)'; return !errorText; } function calculateWeight() { var length = lengthInput.value; var width = widthInput.value; var height = heightInput.value; var density = densityInput.value; var isValid = true; isValid &= validateInput(length, lengthInput, lengthError, 'Length', 0); isValid &= validateInput(width, widthInput, widthError, 'Width', 0); isValid &= validateInput(height, heightInput, heightError, 'Height', 0); isValid &= validateInput(density, densityInput, densityError, 'Density', 0); if (!isValid) { resultsSection.style.display = 'none'; return; } var numLength = parseFloat(length); var numWidth = parseFloat(width); var numHeight = parseFloat(height); var numDensity = parseFloat(density); var volume = numLength * numWidth * numHeight; var weightKg = volume * numDensity; var weightTons = weightKg / 1000; var weightPounds = weightKg * 2.20462; totalWeightDisplay.textContent = weightKg.toFixed(2) + ' kg'; volumeDisplay.textContent = volume.toFixed(2) + ' m³'; weightTonsDisplay.textContent = weightTons.toFixed(3) + ' t'; weightPoundsDisplay.textContent = weightPounds.toFixed(2) + ' lbs'; resultsSection.style.display = 'block'; updateCharts(volume, weightKg); } function resetCalculator() { lengthInput.value = "; widthInput.value = "; heightInput.value = "; densityInput.value = '2900'; lengthError.textContent = "; lengthError.style.display = 'none'; lengthInput.style.borderColor = 'var(–medium-gray)'; widthError.textContent = "; widthError.style.display = 'none'; widthInput.style.borderColor = 'var(–medium-gray)'; heightError.textContent = "; heightError.style.display = 'none'; heightInput.style.borderColor = 'var(–medium-gray)'; densityError.textContent = "; densityError.style.display = 'none'; densityInput.style.borderColor = 'var(–medium-gray)'; totalWeightDisplay.textContent = '–.– kg'; volumeDisplay.textContent = '–.– m³'; weightTonsDisplay.textContent = '–.– t'; weightPoundsDisplay.textContent = '–.– lbs'; resultsSection.style.display = 'none'; if (weightVolumeChartInstance) { weightVolumeChartInstance.destroy(); } if (weightBreakdownChartInstance) { weightBreakdownChartInstance.destroy(); } // Re-initialize charts with default/empty data if needed, or leave them blank initCharts(); // Call init to clear canvas content } function copyResults() { var resultsText = "Basalt Weight Calculation Results:\n\n"; resultsText += "Total Weight: " + totalWeightDisplay.textContent + "\n"; resultsText += "Volume: " + volumeDisplay.textContent + "\n"; resultsText += "Weight (Metric Tons): " + weightTonsDisplay.textContent + "\n"; resultsText += "Weight (Pounds): " + weightPoundsDisplay.textContent + "\n\n"; resultsText += "Assumptions:\n"; resultsText += "Density: " + densityInput.value + " kg/m³\n"; var textArea = document.createElement("textarea"); textArea.value = resultsText; document.body.appendChild(textArea); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied successfully!' : 'Failed to copy results.'; console.log(msg); // Optionally, show a temporary message to the user alert(msg); } catch (err) { console.error('Unable to copy results', err); alert('Failed to copy results. Please copy manually.'); } document.body.removeChild(textArea); } // Charting Functions (using native Canvas API) function initCharts() { // Clear existing charts if they exist if (weightVolumeChartInstance) { weightVolumeChartInstance.destroy(); weightVolumeChartInstance = null; } if (weightBreakdownChartInstance) { weightBreakdownChartInstance.destroy(); weightBreakdownChartInstance = null; } // Create new empty canvases or clear them var canvasWV = document.getElementById('weightVolumeChart'); var ctxWV = canvasWV.getContext('2d'); ctxWV.clearRect(0, 0, canvasWV.width, canvasWV.height); var canvasWB = document.getElementById('weightBreakdownChart'); var ctxWB = canvasWB.getContext('2d'); ctxWB.clearRect(0, 0, canvasWB.width, canvasWB.height); } function updateCharts(currentVolume, currentWeightKg) { // Weight vs. Volume Chart var canvasWV = document.getElementById('weightVolumeChart'); var ctxWV = canvasWV.getContext('2d'); // Clear previous chart before drawing new one if (weightVolumeChartInstance) { weightVolumeChartInstance.destroy(); } var volumes = [0, 0.5, 1, 1.5, 2, 2.5, 3]; // Sample volumes var weights = volumes.map(function(vol) { return vol * parseFloat(densityInput.value || 2900); }); // Add current data point volumes.push(currentVolume); weights.push(currentWeightKg); volumes.sort(function(a, b) { return a – b; }); // Sort volumes weights = volumes.map(function(vol) { // Recalculate weights based on sorted volumes return vol * parseFloat(densityInput.value || 2900); }); // Ensure current point is correctly placed after sorting var currentIndex = volumes.indexOf(currentVolume); if (currentIndex === -1) { // if currentVolume was not in original samples volumes.push(currentVolume); weights.push(currentWeightKg); volumes.sort(function(a,b){ return a – b; }); weights = volumes.map(function(vol){ return vol * parseFloat(densityInput.value || 2900); }); } var maxWeight = Math.max(…weights) * 1.1; // Add some buffer var chartHeight = 300; var chartWidth = canvasWV.parentElement.offsetWidth – 40; // Adjust for padding canvasWV.width = chartWidth; canvasWV.height = chartHeight; var padding = 40; var yScaleRatio = (chartHeight – 2 * padding) / maxWeight; var xScaleRatio = (chartWidth – 2 * padding) / (Math.max(…volumes) || 1); // Avoid division by zero ctxWV.clearRect(0, 0, chartWidth, chartHeight); // Draw Axes and Labels ctxWV.strokeStyle = '#ccc'; ctxWV.lineWidth = 1; ctxWV.font = '12px Arial'; ctxWV.fillStyle = '#333'; // Y-axis ctxWV.beginPath(); ctxWV.moveTo(padding, padding); ctxWV.lineTo(padding, chartHeight – padding); ctxWV.stroke(); ctxWV.textAlign = 'right'; ctxWV.fillText('Weight (kg)', padding – 10, padding / 2); var yLabels = 4; for (var i = 0; i <= yLabels; i++) { var yValue = maxWeight * (i / yLabels); var yPos = chartHeight – padding – (yValue * yScaleRatio); ctxWV.fillText(yValue.toFixed(0), padding – 5, yPos + 4); } // X-axis ctxWV.beginPath(); ctxWV.moveTo(padding, chartHeight – padding); ctxWV.lineTo(chartWidth – padding, chartHeight – padding); ctxWV.stroke(); ctxWV.textAlign = 'center'; ctxWV.fillText('Volume (m³)', chartWidth / 2, chartHeight – padding / 2); var xLabels = 4; var maxXVolume = Math.max(…volumes) || 1; for (var i = 0; i <= xLabels; i++) { var xValue = maxXVolume * (i / xLabels); var xPos = padding + (xValue * xScaleRatio); ctxWV.fillText(xValue.toFixed(1), xPos, chartHeight – padding + 15); } // Draw the line graph ctxWV.beginPath(); ctxWV.strokeStyle = 'var(–primary-color)'; ctxWV.lineWidth = 2; for (var i = 0; i 0) { breakdownData.push({ label: 'Length Contribution', value: dimensionValues[0] * dimensionValues[1] }); // Proportional to area in L-W plane breakdownData.push({ label: 'Width Contribution', value: dimensionValues[1] * dimensionValues[2] }); // Proportional to area in W-H plane breakdownData.push({ label: 'Height Contribution', value: dimensionValues[0] * dimensionValues[2] }); // Proportional to area in L-H plane } else { // Handle case where one or more dimensions are zero breakdownData.push({ label: 'Length Contribution', value: 0 }); breakdownData.push({ label: 'Width Contribution', value: 0 }); breakdownData.push({ label: 'Height Contribution', value: 0 }); } var totalContribution = breakdownData.reduce(function(sum, item) { return sum + item.value; }, 0); if (totalContribution === 0) totalContribution = 1; // Avoid division by zero if all contributions are zero // Calculate percentages and ensure they sum to 100% var percentages = breakdownData.map(function(item) { return (item.value / totalContribution) * 100; }); // Adjust percentages to ensure they sum to 100% due to floating point math var sumPercentages = percentages.reduce(function(a, b) { return a + b; }, 0); if (sumPercentages > 0 && Math.abs(sumPercentages – 100) > 0.01) { var diff = 100 – sumPercentages; for (var i = 0; i < percentages.length; i++) { percentages[i] += diff / percentages.length; } } var chartWidthWB = canvasWB.parentElement.offsetWidth – 40; var chartHeightWB = 300; canvasWB.width = chartWidthWB; canvasWB.height = chartHeightWB; ctxWB.clearRect(0, 0, chartWidthWB, chartHeightWB); var centerX = chartWidthWB / 2; var centerY = chartHeightWB / 2; var radius = Math.min(chartWidthWB, chartHeightWB) / 2 – padding; var startAngle = -0.5 * Math.PI; // Start at top var colors = ['#004a99', '#007bff', '#6699cc']; // Primary, Secondary, Light Blue // Draw slices var currentAngle = startAngle; for (var i = 0; i < percentages.length; i++) { var sliceAngle = (percentages[i] / 100) * 2 * Math.PI; ctxWB.beginPath(); ctxWB.moveTo(centerX, centerY); ctxWB.arc(centerX, centerY, radius, currentAngle, currentAngle + sliceAngle); ctxWB.closePath(); ctxWB.fillStyle = colors[i % colors.length]; ctxWB.fill(); // Draw labels ctxWB.fillStyle = '#fff'; ctxWB.font = 'bold 12px Arial'; var midAngle = currentAngle + sliceAngle / 2; var labelRadius = radius * 0.7; var labelX = centerX + labelRadius * Math.cos(midAngle); var labelY = centerY + labelRadius * Math.sin(midAngle); ctxWB.textAlign = 'center'; ctxWB.fillText(percentages[i].toFixed(1) + '%', labelX, labelY); currentAngle += sliceAngle; } // Draw legend ctxWB.font = '12px Arial'; ctxWB.textAlign = 'left'; var legendX = padding; var legendY = chartHeightWB – padding; for (var i = 0; i < breakdownData.length; i++) { ctxWB.fillStyle = colors[i % colors.length]; ctxWB.fillRect(legendX, legendY, 15, 10); ctxWB.fillStyle = '#333'; ctxWB.fillText(breakdownData[i].label + ' (' + dimensionValues[i] + 'm)', legendX + 20, legendY + 10); legendY += 20; } } // Initial setup for inputs to trigger calculations on change var inputFields = [lengthInput, widthInput, heightInput, densityInput]; for (var i = 0; i < inputFields.length; i++) { inputFields[i].addEventListener('input', function() { // Only calculate if all fields have some value, or handle validation errors if (document.getElementById('length').value && document.getElementById('width').value && document.getElementById('height').value && document.getElementById('density').value) { calculateWeight(); } else { // Optionally hide results if inputs become invalid/empty // resultsSection.style.display = 'none'; } }); } // Initial Chart Rendering on Load window.onload = function() { initCharts(); // Clear canvases initially // calculateWeight(); // Optionally calculate with default values if any }; // Add event listener for window resize to update chart dimensions window.addEventListener('resize', function() { // Recalculate and redraw charts if results are visible if (resultsSection.style.display === 'block') { var currentVolume = parseFloat(volumeDisplay.textContent); var currentWeight = parseFloat(totalWeightDisplay.textContent); // Ensure values are valid numbers before updating charts if (!isNaN(currentVolume) && !isNaN(currentWeight)) { updateCharts(currentVolume, currentWeight); } } else { // If results are not shown, ensure charts are cleared or reset initCharts(); } });

Leave a Comment