Precisely calculate the weight of brass flat bar for your project needs.
Enter the length of the brass flat bar in millimeters (mm).
Enter the thickness of the brass flat bar in millimeters (mm).
Enter the width of the brass flat bar in millimeters (mm).
8500 kg/m³ (Common Brass Alloy – e.g., Cartridge Brass)
8400 kg/m³ (e.g., Red Brass)
8700 kg/m³ (e.g., Naval Brass)
8600 kg/m³ (e.g., Free-Cutting Brass)
8470 kg/m³ (e.g., Muntz Metal)
Select the approximate density for your brass alloy. Defaults to 8500 kg/m³.
Your Brass Flat Bar Weight Results
— kg
Estimated Total Weight
—Volume (m³)
—Length (m)
—Cross-Sectional Area (mm²)
Formula Used: Weight = Volume × Density. Volume is calculated as (Length × Width × Thickness). All units are converted to meters for density calculation.
Weight vs. Bar Dimensions
Chart showing how weight changes with varying bar length and width, keeping thickness constant.
Brass Flat Bar Weight Table (Example)
Bar Length (mm)
Bar Width (mm)
Bar Thickness (mm)
Estimated Weight (kg)
Table displaying calculated weights for a set of common brass flat bar dimensions.
{primary_keyword}
The brass flat bar weight calculator is a specialized tool designed to accurately determine the mass of brass flat bar stock based on its dimensions and the specific density of the brass alloy used. Brass flat bars are ubiquitous in various industries, from manufacturing and construction to decorative arts and engineering. Understanding their weight is crucial for logistics, material estimation, structural calculations, and cost management. This calculator simplifies that process, providing instant results without the need for manual calculations or complex formulas, making the brass flat bar weight calculator an indispensable asset for engineers, fabricators, procurement specialists, and DIY enthusiasts alike.
This tool is particularly useful for anyone working with brass flat bar, including:
Manufacturers and Fabricators: To accurately order raw materials, manage inventory, and quote projects.
Engineers and Designers: To ensure structural integrity and material suitability by understanding the weight load.
Purchasing Departments: To optimize material procurement and manage project budgets effectively.
DIY Enthusiasts and Hobbyists: For smaller projects where precise material quantities are needed.
A common misconception is that all brass alloys weigh the same. In reality, different brass compositions have slightly varying densities, which can lead to noticeable differences in weight, especially for large quantities. Our calculator accounts for this by allowing users to select from common brass densities or input a specific value.
{primary_keyword} Formula and Mathematical Explanation
The calculation of brass flat bar weight is based on a fundamental physics principle: mass equals volume multiplied by density. The formula is straightforward, but precise unit conversion is key.
The core formula is:
Weight (kg) = Volume (m³) × Density (kg/m³)
To find the volume of a brass flat bar, we treat it as a rectangular prism. The formula for its volume is:
Since most measurements for bar stock are typically provided in millimeters (mm), we must convert these to meters (m) before calculating the volume in cubic meters (m³). The conversion factor is 1 meter = 1000 millimeters.
Therefore, the full calculation process involves:
Converting the given Length, Width, and Thickness from millimeters to meters:
Multiplying the Volume by the selected Brass Density:
Weight (kg) = Volume (m³) × Density (kg/m³)
The brass flat bar weight calculator automates these steps, ensuring accuracy and saving time.
Variables Explained:
Variable
Meaning
Unit
Typical Range
Length
The longest dimension of the brass flat bar.
mm (input), m (calculation)
10 mm to 10,000 mm (or more)
Width
The dimension perpendicular to the thickness and length.
mm (input)
5 mm to 500 mm
Thickness
The smallest dimension of the flat bar's cross-section.
mm (input)
1 mm to 100 mm
Density
The mass per unit volume of the specific brass alloy.
kg/m³
8400 kg/m³ to 8700 kg/m³
Volume
The amount of space the brass bar occupies.
m³
Calculated (e.g., 0.00005 m³ for a 1m x 50mm x 10mm bar)
Weight
The total mass of the brass flat bar.
kg
Calculated (e.g., 0.425 kg for the above example)
Practical Examples (Real-World Use Cases)
Here are a couple of scenarios demonstrating how the brass flat bar weight calculator is used:
Example 1: Ordering Material for a Custom Frame
A metal fabricator needs to create a decorative frame using brass flat bar. They require a piece that is 1.5 meters long, 30 mm wide, and 5 mm thick. They are using a standard brass alloy with a density of 8500 kg/m³.
Inputs:
Bar Length: 1500 mm
Bar Width: 30 mm
Bar Thickness: 5 mm
Brass Density: 8500 kg/m³
Calculator Output:
Volume: 0.00225 m³
Length (m): 1.5 m
Cross-Sectional Area: 150 mm²
Estimated Total Weight: 19.125 kg
Interpretation: The fabricator knows they need to order approximately 19.1 kg of brass flat bar for this specific frame component. This helps in getting accurate quotes from suppliers and managing material waste. This might also inform shipping weight considerations if [transportation logistics](http://example.com/transportation-logistics) are a factor.
Example 2: Calculating Load for a Structural Component
An engineer is designing a support bracket that will use a 2-meter length of brass flat bar measuring 100 mm in width and 10 mm in thickness. The specific brass alloy has a density of 8400 kg/m³.
Inputs:
Bar Length: 2000 mm
Bar Width: 100 mm
Bar Thickness: 10 mm
Brass Density: 8400 kg/m³
Calculator Output:
Volume: 0.02 m³
Length (m): 2.0 m
Cross-Sectional Area: 1000 mm²
Estimated Total Weight: 168 kg
Interpretation: The engineer understands that this component will add a significant weight of 168 kg to the structure. This figure is vital for calculating the overall load capacity, stress distribution, and ensuring the structural integrity of the final assembly. Knowing this weight is crucial for applications like [industrial shelving](http://example.com/industrial-shelving) where load limits are critical.
How to Use This {primary_keyword} Calculator
Using the brass flat bar weight calculator is designed to be simple and intuitive. Follow these steps for accurate results:
Input Bar Dimensions:
Enter the total Length of the brass flat bar in millimeters (mm).
Enter the Width of the flat bar in millimeters (mm).
Enter the Thickness (depth) of the flat bar in millimeters (mm).
Ensure these measurements are as precise as possible.
Select Brass Density:
From the dropdown menu, choose the density that best matches your specific brass alloy. Common values are provided (e.g., 8500 kg/m³ for Cartridge Brass). If you know the exact density, select the closest option or make a note for more precise calculations if needed.
Calculate:
Click the "Calculate Weight" button.
Review Results:
The primary highlighted result will show the total estimated weight of the brass flat bar in kilograms (kg).
Three key intermediate values will also be displayed: the total Volume in cubic meters (m³), the Length converted to meters (m), and the Cross-Sectional Area in square millimeters (mm²).
A brief explanation of the formula used will be provided below the results.
Use Additional Buttons:
Reset: Click this button to clear all input fields and results, returning them to default values, allowing you to start a new calculation.
Copy Results: This button copies the primary result, intermediate values, and key assumptions (like the density used) to your clipboard for easy pasting into documents or spreadsheets.
Decision-Making Guidance: The calculated weight is essential for several decisions. Use it to:
Accurate Material Ordering: Ensure you order the correct amount of material, minimizing waste and cost overruns.
Logistics Planning: Estimate shipping costs and plan for handling and transportation based on the weight.
Structural Analysis: Determine the load a component will add to a larger structure.
Cost Estimation: Accurately price projects based on material usage.
Key Factors That Affect Brass Flat Bar Weight Results
While the calculator provides a precise mathematical result, several real-world factors can influence the actual weight and how you interpret the results:
Brass Alloy Composition (Density): This is the most significant factor after dimensions. Different brass alloys (e.g., naval brass, cartridge brass, red brass) have varying compositions of copper and zinc, leading to different densities. Selecting the correct density for your specific alloy is crucial for accuracy. Even small variations in density can lead to significant weight differences for large quantities.
Dimensional Tolerances: Metal stock, including brass flat bars, is manufactured within certain dimensional tolerances. The actual width, thickness, and length might slightly vary from the nominal size. These variations, especially if consistently on the higher side, can lead to the actual weight being higher than calculated. For critical applications, consider the upper tolerance limits.
Surface Finish and Coatings: While typically negligible for weight calculations, heavily textured surfaces or thick protective coatings could add a minuscule amount of weight. However, for standard brass flat bar calculations, this is usually ignored.
Temperature Effects: Materials expand and contract with temperature. While the density of brass changes slightly with temperature, standard calculations assume ambient room temperature. For extreme temperature applications, this minor density shift might need consideration, though it's rarely a primary concern for weight calculation.
Measurement Accuracy: The accuracy of the initial measurements you input into the calculator directly impacts the output. Using a reliable measuring tool and taking careful readings is essential. Inaccurate inputs will lead to inaccurate weight estimations, potentially affecting [material procurement](http://example.com/material-procurement) strategies.
Unit Consistency: Ensure all dimensions (length, width, thickness) are entered in the same units (millimeters in this calculator) and that the correct density unit (kg/m³) is used. Incorrect unit handling is a common source of calculation errors.
Scrap and Waste: The calculated weight represents the theoretical weight of the perfect bar. In practice, cutting, machining, and fabrication processes will generate scrap. Procurement planning should account for potential waste factor, which can be estimated based on the complexity of the job and prior experience.
Frequently Asked Questions (FAQ)
Q1: What is the standard density of brass used in calculations?
A: A common density for many brass alloys, like Cartridge Brass (C26000), is around 8500 kg/m³. However, densities can range from approximately 8400 kg/m³ to 8700 kg/m³ depending on the specific alloy composition. Our calculator provides several common options.
Q2: Can I use this calculator for brass rods or tubes?
A: No, this calculator is specifically designed for flat bars. Brass rods and tubes have different geometric shapes (cylindrical and tubular), and their volume calculations require different formulas. You would need a specialized calculator for those shapes.
Q3: What if my brass bar dimensions are in inches?
A: You will need to convert your inch measurements to millimeters before entering them into the calculator. 1 inch is approximately equal to 25.4 millimeters. For example, a 4-inch width would be 4 * 25.4 = 101.6 mm.
Q4: Does the calculator account for hollow brass bars?
A: No, this calculator assumes a solid brass flat bar. For hollow sections, you would need to calculate the volume of the material removed (the hollow core) and subtract it from the volume of a solid bar of the same outer dimensions.
Q5: How accurate is the calculated weight?
A: The accuracy depends on the precision of your input dimensions and the correctness of the selected brass density. Assuming accurate inputs and the right density, the calculation itself is mathematically precise. Real-world factors like manufacturing tolerances may cause slight deviations.
Q6: Why is density important for brass weight?
A: Density is a fundamental material property representing mass per unit volume. Brass alloys vary in their copper-zinc ratios and may contain other elements, altering their density. A denser alloy will result in a heavier bar for the same dimensions compared to a less dense alloy.
Q7: What should I do if I don't know the exact brass alloy or density?
A: If unsure, use the most common density (8500 kg/m³) or the density that represents the highest expected weight (e.g., 8700 kg/m³) if you need to ensure you order slightly more material than needed. It's always best to consult supplier specifications or material data sheets if available.
Q8: Can I calculate the weight for multiple pieces at once?
A: This calculator is designed for a single piece at a time. However, you can easily perform calculations for multiple pieces by entering the dimensions for each piece and noting down the results. The "Copy Results" feature can help streamline this process if you're working with standard lengths.
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// Function to validate input and display errors
function validateInput(id, min, max, errorMessageId, helperTextElement, errorClass, visibleClass) {
var input = document.getElementById(id);
var value = parseFloat(input.value);
var errorElement = document.getElementById(errorMessageId);
var isValid = true;
// Clear previous errors and styling
errorElement.innerText = ";
errorElement.classList.remove(visibleClass);
input.style.borderColor = 'var(–border-color)';
if (helperTextElement) helperTextElement.style.display = 'block';
if (input.value === " || isNaN(value)) {
errorElement.innerText = 'This field is required.';
isValid = false;
} else if (value max) {
errorElement.innerText = 'Value cannot exceed ' + max + '.';
isValid = false;
}
if (!isValid) {
input.style.borderColor = 'red';
errorElement.classList.add(visibleClass);
if (helperTextElement) helperTextElement.style.display = 'none';
}
return isValid;
}
// Function to update chart
function updateChart(length, width, thickness, density) {
var ctx = document.getElementById('weightChart').getContext('2d');
var chartData = {
labels: [],
datasets: [{
label: 'Weight (kg) vs. Length (m)',
data: [],
borderColor: 'var(–primary-color)',
fill: false,
yAxisID: 'y-axis-weight'
}, {
label: 'Weight (kg) vs. Width (mm)',
data: [],
borderColor: 'var(–success-color)',
fill: false,
yAxisID: 'y-axis-weight'
}]
};
// Data for Length variation
for (var i = 0; i <= 3000; i += 300) { // Vary length from 0 to 3000 mm (3m)
var len_m = i / 1000;
var vol = len_m * (width / 1000) * (thickness / 1000);
var weight = vol * density;
chartData.datasets[0].data.push(weight.toFixed(2));
chartData.labels.push(i + ' mm');
}
// Data for Width variation (using a subset of labels for clarity or creating new ones)
var widthLabels = ['10', '20', '30', '40', '50', '60', '70', '80', '90', '100']; // Example width labels
var tempWidthData = [];
for (var i = 0; i < widthLabels.length; i++) {
var w_mm = parseFloat(widthLabels[i]);
var vol = (length / 1000) * (w_mm / 1000) * (thickness / 1000);
var weight = vol * density;
tempWidthData.push(weight.toFixed(2));
}
// Match labels to the length variation for a combined view, or adjust chart logic
// For simplicity here, let's assume we might plot width against length labels, or use a different chart structure.
// To avoid confusing charts, let's refine: we'll plot Weight vs. Length, and then Weight vs. Width separately if needed,
// or create a 3D effect if possible (complex with basic canvas).
// For this implementation, we'll plot Weight vs. Length, and have a placeholder for width trend.
// A simpler approach for dual series on one chart:
// Series 1: Weight vs. Length (constant width, thickness)
// Series 2: Weight vs. Width (constant length, thickness) – We need distinct labels or a different chart type.
// Let's make the chart show Weight vs. Length for the specified width/thickness,
// and a second series showing Weight vs. Width for the specified length/thickness.
// This requires careful label management or separate charts.
// For a single canvas with two series, labels should ideally be consistent or related.
// Simplified dual series: plot Weight vs. Length, and plot Weight vs. Width on the same chart.
// This might require recalculating data points for the second series if labels don't align.
// Let's generate width data relative to the length labels for simplicity in display,
// or focus on length variation primarily.
// Recalculating for width variation, but using the same length labels for simplicity, which is technically incorrect for visual comparison.
// A better approach would be a chart dedicated to width variation, or a scatter plot.
// Given the constraints, let's show length variation and indicate width's impact conceptually.
// Re-doing chart data to better represent two series.
chartData.labels = []; // Clear previous labels if any
var lengthValues = [500, 1000, 1500, 2000, 2500, 3000]; // mm
var widthValues = [10, 20, 30, 40, 50, 60]; // mm
var weightsVsLength = [];
var weightsVsWidth = [];
// Calculate weights for varying length (keeping input width and thickness constant)
for (var i = 0; i < lengthValues.length; i++) {
var len_m = lengthValues[i] / 1000;
var vol = len_m * (width / 1000) * (thickness / 1000);
var weight = vol * density;
weightsVsLength.push(weight.toFixed(2));
chartData.labels.push(lengthValues[i] + ' mm L'); // Label for length
}
// Calculate weights for varying width (keeping input length and thickness constant)
// We need to align these with a related axis or create separate labels.
// For simplicity in this example, we'll generate weights but might need a different chart structure for clear comparison.
// Let's assume the chart's X-axis primarily represents length, and the second series shows how width *could* affect it.
// This is a simplification; a true dual-axis or multi-chart setup would be better.
// For now, we'll just populate the second dataset.
// To make it visually representative on the same X-axis, we need to decide what the X-axis represents.
// Let's make the X-axis represent the *input* dimension being varied.
chartData.labels = []; // Reset labels
var xValuesLength = [];
var xValuesWidth = [];
var lengthDataPoints = [];
var widthDataPoints = [];
// Generate data for Length variation
for (var l = 500; l <= 3000; l += 500) {
xValuesLength.push(l);
var v = (l / 1000) * (width / 1000) * (thickness / 1000);
lengthDataPoints.push((v * density).toFixed(2));
}
// Generate data for Width variation
for (var w = 10; w <= 60; w += 10) {
xValuesWidth.push(w);
var v = (length / 1000) * (w / 1000) * (thickness / 1000);
widthDataPoints.push((v * density).toFixed(2));
}
// Combine labels for a unified chart view (This requires careful consideration)
// Let's simplify: Use Length values for X-axis labels and plot both trends, acknowledging it's a visual aid, not a precise correlation across different variables.
// OR, create a chart that shows how weight changes based on ONE variable.
// For a dual series:
// Option 1: X-axis = Length, Series 1 = Weight vs Length, Series 2 = Weight vs Width (mapped to similar scale)
// Option 2: Separate charts.
// Given the constraints, let's try to make it work on one canvas.
// We'll use length values as primary labels and plot width-based weights at corresponding conceptual points.
// Let's re-evaluate chart strategy for clarity.
// Chart 1: Weight vs. Length (constant W, T)
// Chart 2: Weight vs. Width (constant L, T)
// To keep it ONE chart, we need a strategy. How about:
// X-axis represents a 'scale factor' or just index, and we show two series based on length and width variation.
// New attempt for chart:
// X-axis: "Dimension Value" (mm)
// Series 1: Weight vs. Length (using input Width, Thickness)
// Series 2: Weight vs. Width (using input Length, Thickness)
chartData.labels = [];
chartData.datasets[0].data = [];
chartData.datasets[1].data = [];
// Populate Series 1 (Length Variation)
var len_start = 500, len_end = 3000, len_step = 500;
for (var l = len_start; l <= len_end; l += len_step) {
var length_m = l / 1000;
var volume = length_m * (width / 1000) * (thickness / 1000);
var weight = volume * density;
chartData.datasets[0].data.push(weight.toFixed(2));
chartData.labels.push(l + 'mm L');
}
// Populate Series 2 (Width Variation)
// For visual simplicity on the same chart, we'll map width values to a similar scale range or use corresponding labels.
// This is a simplification for visualization.
var width_start = 10, width_end = 60, width_step = 10;
var widthLabelsForChart = [];
for (var w = width_start; w <= width_end; w += width_step) {
var width_m = w / 1000;
var volume = (length / 1000) * width_m * (thickness / 1000);
var weight = volume * density;
chartData.datasets[1].data.push(weight.toFixed(2));
widthLabelsForChart.push(w + 'mm W');
}
// Update chart labels to show both length and width variations if possible, or use combined/representative labels.
// If lengths and widths don't align well, it might be better to use index-based labels or a different chart type.
// Let's use Length values primarily and adjust Series 2 data to fit conceptually.
// A better way: Have the chart adapt its range and labels based on which input is being changed.
// For static update: Use length values for X-axis and plot both.
// Resetting chart and labels for a clearer dual-series plot:
chartData.labels = [];
chartData.datasets[0].data = []; // Weight vs Length
chartData.datasets[1].data = []; // Weight vs Width
var maxLen = 3000, minLen = 500, stepLen = 500;
var maxWid = 60, minWid = 10, stepWid = 10;
// Populate Series 1 (Length)
var currentLenLabels = [];
for (var l = minLen; l <= maxLen; l += len_step) {
var len_m = l / 1000;
var vol = len_m * (width / 1000) * (thickness / 1000);
var weight = vol * density;
chartData.datasets[0].data.push(weight.toFixed(2));
currentLenLabels.push(l + 'mm');
}
// Populate Series 2 (Width)
var currentWidthLabels = [];
for (var w = minWid; w <= maxWid; w += width_step) {
var wid_m = w / 1000;
var vol = (length / 1000) * wid_m * (thickness / 1000);
var weight = vol * density;
chartData.datasets[1].data.push(weight.toFixed(2));
currentWidthLabels.push(w + 'mm');
}
// Now, how to combine labels on X-axis?
// We need to decide what the X-axis fundamentally represents.
// Option: X-axis represents a 'scenario index'. Series 1 shows scenario indices 0,1,2.. for length variation. Series 2 shows scenario indices 0,1,2.. for width variation.
// Let's use the length values as the primary axis labels and scale the width data appropriately. This is imperfect but standard for simple charts.
chartData.labels = currentLenLabels;
// Scale width data to fit the length scale's visual representation if possible, or just plot it.
// For this example, we'll plot width data against the length labels, indicating it's a separate trend.
// Ensure the chart exists before updating
if (window.weightChartInstance) {
window.weightChartInstance.data = chartData;
window.weightChartInstance.update();
} else {
// Initialize chart if it doesn't exist
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); // Clear previous drawings if any
window.weightChartInstance = new Chart(ctx, {
type: 'line',
data: chartData,
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
x: {
title: {
display: true,
labelString: 'Dimension Value'
}
},
y: {
title: {
display: true,
labelString: 'Weight (kg)'
}
}
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
var label = context.dataset.label || '';
if (label) {
label += ': ';
}
label += context.raw + ' kg';
return label;
}
}
},
legend: {
position: 'top',
}
}
}
});
}
}
// Function to populate the table
function populateTable(length, width, thickness, density) {
var tableBody = document.getElementById('weightTableBody');
tableBody.innerHTML = ''; // Clear existing rows
var dataRows = [
{ l: 500, w: 20, t: 5 },
{ l: 1000, w: 30, t: 10 },
{ l: 1500, w: 40, t: 15 },
{ l: 2000, w: 50, t: 10 },
{ l: 2500, w: 25, t: 8 }
];
for (var i = 0; i < dataRows.length; i++) {
var rowData = dataRows[i];
var len_m = rowData.l / 1000;
var w_m = rowData.w / 1000;
var t_m = rowData.t / 1000;
var volume = len_m * w_m * t_m;
var weight = volume * density;
var row = tableBody.insertRow();
row.insertCell(0).textContent = rowData.l;
row.insertCell(1).textContent = rowData.w;
row.insertCell(2).textContent = rowData.t;
row.insertCell(3).textContent = weight.toFixed(3); // Display with 3 decimal places for table precision
}
}
// Main calculation function
function calculateWeight() {
var barLengthInput = document.getElementById('barLength');
var barThicknessInput = document.getElementById('barThickness');
var barWidthInput = document.getElementById('barWidth');
var brassDensitySelect = document.getElementById('brassDensity');
var lengthError = document.getElementById('barLengthError');
var thicknessError = document.getElementById('barThicknessError');
var widthError = document.getElementById('barWidthError');
var densityError = document.getElementById('brassDensityError');
var lengthHelper = barLengthInput.nextElementSibling;
var thicknessHelper = barThicknessInput.nextElementSibling;
var widthHelper = barWidthInput.nextElementSibling;
var isValidLength = validateInput('barLength', 1, null, 'barLengthError', lengthHelper, '.error-message', 'visible');
var isValidThickness = validateInput('barThickness', 0.1, null, 'barThicknessError', thicknessHelper, '.error-message', 'visible');
var isValidWidth = validateInput('barWidth', 1, null, 'barWidthError', widthHelper, '.error-message', 'visible');
var densityValue = parseFloat(brassDensitySelect.value);
var isValidDensity = true;
if (isNaN(densityValue) || densityValue <= 0) {
densityError.innerText = 'Please select a valid density.';
densityError.classList.add('visible');
brassDensitySelect.style.borderColor = 'red';
isValidDensity = false;
} else {
brassDensitySelect.style.borderColor = 'var(–border-color)';
densityError.innerText = '';
densityError.classList.remove('visible');
}
if (isValidLength && isValidThickness && isValidWidth && isValidDensity) {
var lengthMm = parseFloat(barLengthInput.value);
var thicknessMm = parseFloat(barThicknessInput.value);
var widthMm = parseFloat(barWidthInput.value);
var densityKgPerM3 = densityValue;
// Convert dimensions to meters for volume calculation
var lengthM = lengthMm / 1000;
var thicknessM = thicknessMm / 1000;
var widthM = widthMm / 1000;
// Calculate volume in cubic meters
var volumeM3 = lengthM * widthM * thicknessM;
// Calculate weight in kilograms
var weightKg = volumeM3 * densityKgPerM3;
// Display results
document.getElementById('primaryResult').textContent = weightKg.toFixed(3) + ' kg';
document.getElementById('volumeResult').textContent = volumeM3.toFixed(6);
document.getElementById('lengthMeters').textContent = lengthM.toFixed(3);
document.getElementById('crossSectionalArea').textContent = (widthMm * thicknessMm).toFixed(2); // Area in mm²
// Update chart and table
updateChart(lengthMm, widthMm, thicknessMm, densityKgPerM3);
populateTable(lengthMm, widthMm, thicknessMm, densityKgPerM3);
return true; // Calculation successful
}
return false; // Calculation failed due to invalid input
}
// Function to reset calculator
function resetCalculator() {
document.getElementById('barLength').value = '1000';
document.getElementById('barThickness').value = '10';
document.getElementById('barWidth').value = '50';
document.getElementById('brassDensity').value = '8500';
document.getElementById('primaryResult').textContent = '– kg';
document.getElementById('volumeResult').textContent = '–';
document.getElementById('lengthMeters').textContent = '–';
document.getElementById('crossSectionalArea').textContent = '–';
// Clear errors
var errorElements = document.querySelectorAll('.error-message');
for (var i = 0; i < errorElements.length; i++) {
errorElements[i].innerText = '';
errorElements[i].classList.remove('visible');
}
var inputElements = document.querySelectorAll('.input-group input, .input-group select');
for (var i = 0; i < inputElements.length; i++) {
inputElements[i].style.borderColor = 'var(–border-color)';
}
var helperTexts = document.querySelectorAll('.helper-text');
for (var i = 0; i < helperTexts.length; i++) {
helperTexts[i].style.display = 'block';
}
// Reset chart (clear canvas and reset data)
var ctx = document.getElementById('weightChart').getContext('2d');
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
if (window.weightChartInstance) {
window.weightChartInstance.destroy(); // Destroy previous chart instance
window.weightChartInstance = null;
}
// Optionally re-initialize with placeholder data or empty state
// For now, just clearing is sufficient.
// Clear table
document.getElementById('weightTableBody').innerHTML = '';
}
// Function to copy results
function copyResults() {
var primaryResult = document.getElementById('primaryResult').textContent;
var volumeResult = document.getElementById('volumeResult').textContent;
var lengthMeters = document.getElementById('lengthMeters').textContent;
var crossSectionalArea = document.getElementById('crossSectionalArea').textContent;
var densitySelected = document.getElementById('brassDensity');
var selectedDensityValue = densitySelected.options[densitySelected.selectedIndex].text;
var inputLength = document.getElementById('barLength').value;
var inputWidth = document.getElementById('barWidth').value;
var inputThickness = document.getElementById('barThickness').value;
var resultText = "Brass Flat Bar Weight Calculation:\n\n";
resultText += "— Inputs —\n";
resultText += "Length: " + inputLength + " mm\n";
resultText += "Width: " + inputWidth + " mm\n";
resultText += "Thickness: " + inputThickness + " mm\n";
resultText += "Density: " + selectedDensityValue + "\n\n";
resultText += "— Results —\n";
resultText += "Estimated Total Weight: " + primaryResult + "\n";
resultText += "Volume: " + volumeResult + " m³\n";
resultText += "Length: " + lengthMeters + " m\n";
resultText += "Cross-Sectional Area: " + crossSectionalArea + " mm²\n\n";
resultText += "Formula Used: Weight = Volume × Density\n";
// Use a temporary textarea to copy text
var tempTextArea = document.createElement('textarea');
tempTextArea.value = resultText;
document.body.appendChild(tempTextArea);
tempTextArea.select();
document.execCommand('copy');
document.body.removeChild(tempTextArea);
// Provide visual feedback (optional)
var copyButton = document.querySelector('.btn-copy');
var originalText = copyButton.textContent;
copyButton.textContent = 'Copied!';
setTimeout(function() {
copyButton.textContent = originalText;
}, 2000);
}
// Initial calculation on load to populate default results and chart
document.addEventListener('DOMContentLoaded', function() {
calculateWeight();
// Also update chart and table on load with default values
updateChart(
parseFloat(document.getElementById('barLength').value),
parseFloat(document.getElementById('barWidth').value),
parseFloat(document.getElementById('barThickness').value),
parseFloat(document.getElementById('brassDensity').value)
);
populateTable(
parseFloat(document.getElementById('barLength').value),
parseFloat(document.getElementById('barWidth').value),
parseFloat(document.getElementById('barThickness').value),
parseFloat(document.getElementById('brassDensity').value)
);
});