Steel Weight Calculator App

Steel Weight Calculator App – Calculate Steel Mass Easily :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-background: #ffffff; –shadow: 0 4px 8px rgba(0,0,0,0.1); –input-border: #ced4da; –input-focus-border: #80bdff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 20px; display: flex; flex-direction: column; align-items: center; } .container { width: 100%; max-width: 960px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 20px; } h1 { font-size: 2.5em; } h2 { font-size: 1.8em; margin-top: 30px; border-bottom: 2px solid var(–primary-color); padding-bottom: 10px; } h3 { font-size: 1.4em; margin-top: 25px; } .loan-calc-container { background-color: var(–card-background); 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Steel Weight Calculator App

Effortlessly calculate the weight of steel for your projects.

Carbon Steel Stainless Steel Alloy Steel Select the type of steel to use its density.
Bar Pipe Plate Sheet Tube Angle Beam (I-Beam) Channel (C-Beam) Choose the geometric shape of the steel.
Enter the first dimension in millimeters (mm).
Enter the second dimension in millimeters (mm).
Enter the third dimension in millimeters (mm).
How many pieces of this steel shape?

Calculation Summary

Volume: mm³

Density: kg/m³

Total Steel Volume:

Total Weight: kg
Formula: Weight = Total Steel Volume (m³) * Density (kg/m³). Volume is calculated based on the selected shape and dimensions.
Weight Distribution by Steel Type (Based on standard densities)
Standard Steel Densities (kg/m³)
Steel Type Density (kg/m³) Common Application
Carbon Steel 7850 Structural components, machinery parts
Stainless Steel 8000 Corrosion-resistant applications, kitchenware
Alloy Steel 7850 High-strength applications, tools

Steel Weight Calculator App: Your Essential Tool for Precision Engineering

The steel weight calculator app is an indispensable utility for anyone involved in construction, fabrication, engineering, and material procurement. It provides a quick and accurate method to determine the mass of steel components, crucial for cost estimation, structural integrity analysis, and inventory management. This advanced steel weight calculator app streamlines complex calculations, ensuring precision and saving valuable time.

What is the Steel Weight Calculator App?

The steel weight calculator app is a digital tool designed to compute the weight of steel based on its material type, shape, dimensions, and quantity. It leverages known densities of different steel alloys and geometric formulas to provide an accurate weight output, typically in kilograms or tons. This steel weight calculator app eliminates the need for manual calculations, which can be time-consuming and prone to errors, especially when dealing with intricate shapes or large quantities.

Who should use it:

  • Construction Professionals: Estimating material needs for rebar, structural beams, and framing.
  • Fabricators and Manufacturers: Calculating raw material requirements for producing steel parts and products.
  • Engineers: Verifying material quantities for structural designs and load calculations.
  • Procurement Specialists: Budgeting and ordering steel based on precise weight requirements.
  • DIY Enthusiasts: Planning small-scale projects involving steel components.

Common misconceptions:

  • "All steel weighs the same": Different steel alloys have slightly varying densities, affecting the final weight.
  • "Manual calculation is always accurate": Complex shapes and numerous components make manual calculations highly susceptible to error.
  • "Weight is only needed for ordering": Accurate weight calculation is vital for structural stability, transportation logistics, and cost control.

Steel Weight Calculator App Formula and Mathematical Explanation

The fundamental principle behind the steel weight calculator app is the relationship between volume, density, and mass (weight). The core formula is:

Weight = Volume × Density

To apply this, the steel weight calculator app performs several steps:

  1. Determine Density: Based on the selected 'Steel Type', the app assigns a specific density value. For instance, standard carbon steel has a density of approximately 7850 kg/m³, while stainless steel might be around 8000 kg/m³.
  2. Calculate Volume: This is the most complex step, as it depends on the 'Steel Shape' and its dimensions. The app uses specific geometric formulas for each shape:
    • Bar (Round/Square/Hexagonal): Volume = π × (Diameter/2)² × Length (for round) or Side² × Length (for square/hex).
    • Pipe/Tube: Volume = π × (OuterDiameter²/4 – InnerDiameter²/4) × Length.
    • Plate/Sheet: Volume = Length × Width × Thickness.
    • Beam/Channel: These are more complex and often involve cross-sectional area calculations multiplied by length. The app simplifies this by using standard profiles or requiring detailed cross-section dimensions. For common I-beams or C-channels, the cross-sectional area is approximated or calculated from standard tables.
    Crucially, dimensions must be converted to a consistent unit, usually meters, to match the density unit (kg/m³).
  3. Calculate Total Volume: The volume of one piece is multiplied by the 'Quantity'.
  4. Calculate Total Weight: The Total Steel Volume (in m³) is multiplied by the chosen Steel Type's Density (in kg/m³) to yield the final weight in kilograms.

Variables Table:

Variable Meaning Unit Typical Range
Steel Type The specific alloy of steel (e.g., Carbon, Stainless). N/A Carbon Steel, Stainless Steel, Alloy Steel
Shape The geometric form of the steel component. N/A Bar, Pipe, Plate, Sheet, Beam, etc.
Dimensions Measurements defining the shape (e.g., Length, Width, Diameter, Thickness). mm (internally converted to m) Varies greatly by product (e.g., 10 mm to 10000 mm)
Quantity The number of identical steel pieces. Unitless 1 to 1000+
Density Mass per unit volume of the steel type. kg/m³ ~7800 – 8000 kg/m³
Volume The space occupied by one piece of steel. mm³ (converted to m³) Calculated value
Total Volume The combined volume of all pieces. Calculated value
Weight The total mass of the steel. kg Calculated value

Practical Examples (Real-World Use Cases)

The steel weight calculator app is incredibly versatile. Here are a couple of practical examples:

Example 1: Structural Steel Beam for a Small Project

  • Scenario: A small construction project requires a single 6-meter long I-beam. The beam's specifications indicate it's a standard W12x26 profile. We'll approximate its properties for this calculator. For simplicity, let's assume we can input an approximate cross-sectional area derived from engineering tables, or for a simpler calculator, we might use a plate example. Let's use a plate for easier input demonstration.
  • Inputs:
    • Steel Type: Carbon Steel
    • Shape: Plate
    • Dimension 1 (Length): 6000 mm
    • Dimension 2 (Width): 150 mm
    • Dimension 3 (Thickness): 10 mm
    • Quantity: 1
  • Calculation Breakdown (using the app's logic):
    • Density (Carbon Steel): 7850 kg/m³
    • Volume = 6m × 0.15m × 0.01m = 0.009 m³
    • Total Volume = 0.009 m³ × 1 = 0.009 m³
    • Weight = 0.009 m³ × 7850 kg/m³ = 70.65 kg
  • Result: The steel weight calculator app would output approximately 70.65 kg. This helps in ordering the correct amount of steel and estimating transportation needs.

Example 2: Stainless Steel Pipes for a Custom Fabrication

  • Scenario: A company needs 50 meters of stainless steel pipe with an outer diameter of 50 mm and a wall thickness of 3 mm for a custom railing system.
  • Inputs:
    • Steel Type: Stainless Steel
    • Shape: Pipe
    • Dimension 1 (Length): 50000 mm
    • Dimension 2 (Outer Diameter): 50 mm
    • Dimension 3 (Wall Thickness): 3 mm (The calculator implicitly handles this by needing inner diameter or thickness.) Let's assume the app has logic for this or a simplified input. For this generic calculator, we'll use a plate analogy for simplicity of explanation, but a real app would have specific pipe logic. Let's reframe to a Bar for clarity.
  • Revised Scenario: A company needs 50 pieces of stainless steel round bar, each 2 meters long and 20 mm in diameter.
  • Inputs:
    • Steel Type: Stainless Steel
    • Shape: Bar (Round)
    • Dimension 1 (Length): 2000 mm
    • Dimension 2 (Diameter): 20 mm
    • Quantity: 50
  • Calculation Breakdown (using the app's logic):
    • Density (Stainless Steel): ~8000 kg/m³
    • Radius = Diameter / 2 = 20 mm / 2 = 10 mm = 0.01 m
    • Volume (one bar) = π × (0.01 m)² × 2 m ≈ 3.14159 × 0.0001 m² × 2 m ≈ 0.0006283 m³
    • Total Volume = 0.0006283 m³ × 50 ≈ 0.031415 m³
    • Weight = 0.031415 m³ × 8000 kg/m³ ≈ 251.32 kg
  • Result: The steel weight calculator app would indicate approximately 251.32 kg. This is vital for material planning and costings in custom fabrication projects.

How to Use This Steel Weight Calculator App

Using our steel weight calculator app is straightforward. Follow these steps:

  1. Select Steel Type: Choose the category of steel you are working with (e.g., Carbon Steel, Stainless Steel). This determines the density used in the calculation.
  2. Choose Steel Shape: Select the geometric form of your steel component (e.g., Bar, Plate, Pipe).
  3. Enter Dimensions: Input the measurements relevant to the selected shape. These are typically in millimeters (mm).
    • For bars, plates, and sheets: Length, Width, Thickness.
    • For pipes and tubes: Length, Outer Diameter, Wall Thickness (or Inner Diameter).
    • For beams and channels: Length and potentially cross-sectional area or specific profile code.
    • (Note: Our simplified calculator might require specific inputs for different shapes.)
  4. Specify Quantity: Enter the number of identical steel pieces you need.
  5. Click Calculate: Press the 'Calculate Weight' button.

How to read results:

  • Primary Result (Total Weight): This is the total mass in kilograms (kg) for all specified steel pieces.
  • Intermediate Values: You'll see the calculated volume of a single piece, the density of the selected steel type, and the total volume of steel.
  • Formula Explanation: Understand the basic calculation: Weight = Total Volume × Density.

Decision-making guidance: Use the calculated weight to compare quotes from suppliers, plan logistics for transport, verify structural load capacities, and manage project budgets effectively. The accuracy provided by the steel weight calculator app ensures informed decisions.

Key Factors That Affect Steel Weight Calculator App Results

While the steel weight calculator app provides precise calculations based on inputs, several real-world factors can influence the actual weight or the calculation's relevance:

  1. Steel Alloy Composition: While we use standard densities, subtle variations in alloying elements (like chromium, nickel, manganese) can slightly alter the density of specific steel grades. Our app uses typical values for common categories.
  2. Dimensional Tolerances: Manufacturing processes have tolerances. Actual steel pieces might be slightly larger or smaller than specified, leading to minor deviations in weight. This is particularly relevant for precision engineering applications.
  3. Shape Complexity: Calculating the volume of complex or custom-formed steel shapes can be challenging. Standard shapes are well-defined, but irregular forms require advanced modeling or approximation.
  4. Surface Coatings and Treatments: Galvanization or other coatings add a small amount of weight. The calculator typically computes the base steel weight, excluding such additions.
  5. Temperature Variations: Steel expands when heated and contracts when cooled. While usually negligible for weight calculations at ambient temperatures, extreme temperature differences could theoretically affect precise volume measurements.
  6. Mill Certifications and Actual Mill Weights: Suppliers often provide mill test certificates detailing the actual chemical composition and mechanical properties, which may include slightly different density values than standard ones. The calculator uses general figures for estimation.
  7. Unit Conversion Accuracy: Ensuring consistent units (e.g., converting all dimensions to meters before calculating volume in m³) is critical. Mistakes here lead to vastly incorrect results.

Frequently Asked Questions (FAQ)

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

A1: The density of steel varies slightly by alloy. For general purposes, a value around 7850 kg/m³ is commonly used for carbon steel. Stainless steel is slightly denser, around 8000 kg/m³. Our steel weight calculator app uses these standard figures.

Q2: Can this calculator handle custom steel profiles?

A2: Our specific steel weight calculator app is designed primarily for standard shapes like bars, plates, pipes, beams, and channels. Custom profiles might require manual calculation of their cross-sectional area or specialized software.

Q3: What units does the calculator use?

A3: Input dimensions are typically expected in millimeters (mm). The calculator internally converts these to meters (m) to compute volume in cubic meters (m³), which is then used with density (kg/m³) to output weight in kilograms (kg).

Q4: How accurate is the steel weight calculation?

A4: The accuracy depends on the precision of your input dimensions and the standard density value used. For standard shapes and materials, the steel weight calculator app provides highly accurate estimates suitable for most practical applications.

Q5: Does the calculator account for hollow sections like tubes?

A5: Yes, shapes like 'Pipe' or 'Tube' are specifically calculated to account for the hollow section. You would typically input the outer diameter and wall thickness (or inner diameter).

Q6: What if I need the weight in tons instead of kilograms?

A6: To convert kilograms to metric tons, divide the result by 1000. For US short tons, divide by approximately 907.185.

Q7: Can I calculate the weight of steel sheets?

A7: Absolutely. Select 'Sheet' as the shape and provide its length, width, and thickness. The steel weight calculator app will compute the weight accurately.

Q8: Are there any limitations to this steel weight calculator app?

A8: The main limitations involve complex or non-standard shapes, very precise tolerance requirements, and specialized alloys with non-standard densities. It's an excellent tool for estimation and standard calculations.

Related Tools and Internal Resources

var densities = { "carbon": 7850, "stainless": 8000, "alloy": 7850 }; var shapeFormulas = { "bar": { name: "Bar", dims: ["Length (mm)", "Diameter (mm)"], formula: function(d1, d2, d3, unitMultiplier) { // d1=length, d2=diameter var radius = (d2 / 2) * unitMultiplier; var length = d1 * unitMultiplier; return Math.PI * Math.pow(radius, 2) * length; }, unitMultiplier: 0.001 // mm to m }, "pipe": { name: "Pipe", dims: ["Length (mm)", "Outer Diameter (mm)", "Wall Thickness (mm)"], formula: function(d1, d2, d3, unitMultiplier) { // d1=length, d2=outer_dia, d3=wall_thickness var outerRadius = (d2 / 2) * unitMultiplier; var innerRadius = outerRadius – (d3 * unitMultiplier); if (innerRadius < 0) innerRadius = 0; // Ensure non-negative radius var length = d1 * unitMultiplier; return Math.PI * (Math.pow(outerRadius, 2) – Math.pow(innerRadius, 2)) * length; }, unitMultiplier: 0.001 // mm to m }, "plate": { name: "Plate", dims: ["Length (mm)", "Width (mm)", "Thickness (mm)"], formula: function(d1, d2, d3, unitMultiplier) { // d1=length, d2=width, d3=thickness var length = d1 * unitMultiplier; var width = d2 * unitMultiplier; var thickness = d3 * unitMultiplier; return length * width * thickness; }, unitMultiplier: 0.001 // mm to m }, "sheet": { name: "Sheet", dims: ["Length (mm)", "Width (mm)", "Thickness (mm)"], formula: function(d1, d2, d3, unitMultiplier) { // d1=length, d2=width, d3=thickness var length = d1 * unitMultiplier; var width = d2 * unitMultiplier; var thickness = d3 * unitMultiplier; return length * width * thickness; }, unitMultiplier: 0.001 // mm to m }, "tube": { name: "Tube", dims: ["Length (mm)", "Outer Diameter (mm)", "Wall Thickness (mm)"], formula: function(d1, d2, d3, unitMultiplier) { // d1=length, d2=outer_dia, d3=wall_thickness var outerRadius = (d2 / 2) * unitMultiplier; var innerRadius = outerRadius – (d3 * unitMultiplier); if (innerRadius < 0) innerRadius = 0; var length = d1 * unitMultiplier; return Math.PI * (Math.pow(outerRadius, 2) – Math.pow(innerRadius, 2)) * length; }, unitMultiplier: 0.001 // mm to m }, "angle": { name: "Angle", dims: ["Length (mm)", "Leg 1 (mm)", "Leg 2 (mm)", "Thickness (mm)"], formula: function(d1, d2, d3, d4, unitMultiplier) { // d1=length, d2=leg1, d3=leg2, d4=thickness // Simplified calculation for angle iron: area of two rectangles minus overlap // Approximation: Area ~ (Leg1*Thickness + Leg2*Thickness – Thickness^2) var leg1 = d2 * unitMultiplier; var leg2 = d3 * unitMultiplier; var thickness = d4 * unitMultiplier; var length = d1 * unitMultiplier; var area = (leg1 * thickness) + (leg2 * thickness) – Math.pow(thickness, 2); return area * length; }, unitMultiplier: 0.001 // mm to m }, "beam": { // Simplified approximation for I-Beam/H-Beam cross-section area name: "Beam (I-Beam)", dims: ["Length (mm)", "Height (mm)", "Flange Width (mm)", "Web Thickness (mm)", "Flange Thickness (mm)"], formula: function(d1, d2, d3, d4, d5, unitMultiplier) { // d1=length, d2=height, d3=flange_width, d4=web_thickness, d5=flange_thickness var height = d2 * unitMultiplier; var flangeWidth = d3 * unitMultiplier; var webThickness = d4 * unitMultiplier; var flangeThickness = d5 * unitMultiplier; var length = d1 * unitMultiplier; // Area calculation: Two flanges + Web var flangeArea = flangeWidth * flangeThickness; var webHeight = height – (2 * flangeThickness); if (webHeight < 0) webHeight = 0; var webArea = webHeight * webThickness; var totalArea = (2 * flangeArea) + webArea; return totalArea * length; }, unitMultiplier: 0.001 // mm to m }, "channel": { // Simplified approximation for C-Channel cross-section area name: "Channel (C-Beam)", dims: ["Length (mm)", "Height (mm)", "Flange Width (mm)", "Web Thickness (mm)", "Flange Thickness (mm)"], formula: function(d1, d2, d3, d4, d5, unitMultiplier) { // d1=length, d2=height, d3=flange_width, d4=web_thickness, d5=flange_thickness var height = d2 * unitMultiplier; var flangeWidth = d3 * unitMultiplier; var webThickness = d4 * unitMultiplier; var flangeThickness = d5 * unitMultiplier; var length = d1 * unitMultiplier; // Area calculation: One flange + Web + Inner radius approximation var flangeArea = flangeWidth * flangeThickness; var webHeight = height – flangeThickness; // Height of the web part accessible for the web thickness calc if (webHeight 1) { label2.innerText = formulaInfo.dims[1]; input2.value = "; helperText2.innerText = `Enter the ${formulaInfo.dims[1]}.`; inputGroup2.style.display = 'block'; } else { inputGroup2.style.display = 'none'; } if (formulaInfo.dims.length > 2) { label3.innerText = formulaInfo.dims[2]; input3.value = "; helperText3.innerText = `Enter the ${formulaInfo.dims[2]}.`; inputGroup3.style.display = 'block'; } else { inputGroup3.style.display = 'none'; } // Handle shapes needing 4 or 5 inputs (Angle, Beam, Channel) if (currentShape === 'angle') { var angleInputGroup4 = document.createElement('div'); angleInputGroup4.className = 'input-group'; angleInputGroup4.innerHTML = ` Enter the first leg dimension in millimeters (mm).
`; inputGroup3.parentNode.insertBefore(angleInputGroup4, inputGroup3.nextSibling); } else { var existingDim4 = document.getElementById('dimension4'); if (existingDim4) existingDim4.closest('.input-group').remove(); } if (currentShape === 'beam' || currentShape === 'channel') { var beamChannelInputGroup4 = document.createElement('div'); beamChannelInputGroup4.className = 'input-group'; beamChannelInputGroup4.innerHTML = ` Enter the web thickness in millimeters (mm).
`; inputGroup3.parentNode.insertBefore(beamChannelInputGroup4, inputGroup3.nextSibling); var beamChannelInputGroup5 = document.createElement('div'); beamChannelInputGroup5.className = 'input-group'; beamChannelInputGroup5.innerHTML = ` Enter the flange thickness in millimeters (mm).
`; beamChannelInputGroup4.parentNode.insertBefore(beamChannelInputGroup5, beamChannelInputGroup4.nextSibling); } else { var existingDim4 = document.getElementById('dimension4'); if (existingDim4) existingDim4.closest('.input-group').remove(); var existingDim5 = document.getElementById('dimension5'); if (existingDim5) existingDim5.closest('.input-group').remove(); } } function validateInput(id, min, max, required = true) { var input = document.getElementById(id); var errorElement = document.getElementById(id + 'Error'); var value = parseFloat(input.value); var isValid = true; errorElement.innerText = "; if (required && (input.value.trim() === " || isNaN(value))) { errorElement.innerText = 'This field is required.'; isValid = false; } else if (!isNaN(value)) { if (min !== null && value max) { errorElement.innerText = `Value must be no more than ${max}.`; isValid = false; } } return isValid ? value : null; } function calculateWeight() { var steelType = document.getElementById('steelType').value; var shape = document.getElementById('shape').value; var quantity = validateInput('quantity', 1); if (quantity === null) return; var formulaInfo = shapeFormulas[shape]; var dims = []; var inputsValid = true; for (var i = 0; i < formulaInfo.dims.length; i++) { var dimId = 'dimension' + (i + 1); var dimValue = validateInput(dimId, 0); // Allow 0 for some dimensions like thickness if shape allows if (dimValue === null) { inputsValid = false; } dims.push(dimValue); } // Special handling for shapes needing more inputs than initial 3 if (shape === 'angle') { var dim4Value = validateInput('dimension4', 0); if (dim4Value === null) inputsValid = false; dims.push(dim4Value); } if (shape === 'beam' || shape === 'channel') { var dim4Value = validateInput('dimension4', 0); // Web Thickness var dim5Value = validateInput('dimension5', 0); // Flange Thickness if (dim4Value === null || dim5Value === null) inputsValid = false; dims.push(dim4Value, dim5Value); } if (!inputsValid) { document.getElementById('results').style.opacity = '0'; return; } var density = densities[steelType]; var volume = 0; try { volume = formulaInfo.formula.apply(null, dims.concat(formulaInfo.unitMultiplier)); } catch (e) { console.error("Error during volume calculation:", e); document.getElementById('results').style.opacity = '0'; return; // Prevent calculation if formula fails } var totalVolume = volume * quantity; var weight = totalVolume * density; // Format results nicely var formattedVolume = volume.toFixed(6); var formattedTotalVolume = totalVolume.toFixed(6); var formattedWeight = weight.toFixed(2); document.getElementById('volumeResult').innerText = formattedVolume.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ","); // Add commas for thousands document.getElementById('densityResult').innerText = density.toLocaleString(); document.getElementById('totalVolumeResult').innerText = formattedTotalVolume.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ","); document.getElementById('weightResult').innerText = formattedWeight.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ","); document.getElementById('results').classList.add('visible'); updateChart(steelType, weight); } function resetCalculator() { document.getElementById('steelType').value = 'carbon'; document.getElementById('shape').value = 'bar'; document.getElementById('quantity').value = '1'; // Reset dimension inputs based on default shape 'bar' var shapeSelect = document.getElementById('shape'); shapeSelect.dispatchEvent(new Event('change')); // Trigger updateShapeInputs // Clear values after shape is updated document.getElementById('dimension1').value = ''; document.getElementById('dimension2').value = ''; document.getElementById('dimension3').value = ''; document.getElementById('dimension4') ? document.getElementById('dimension4').value = '' : null; document.getElementById('dimension5') ? document.getElementById('dimension5').value = '' : null; // Clear errors var errorElements = document.querySelectorAll('.error-message'); for (var i = 0; i < errorElements.length; i++) { errorElements[i].innerText = ''; } // Reset results display document.getElementById('volumeResult').innerText = '–'; document.getElementById('densityResult').innerText = '–'; document.getElementById('totalVolumeResult').innerText = '–'; document.getElementById('weightResult').innerText = '–'; document.getElementById('results').classList.remove('visible'); // Reset chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } initChart(); // Reinitialize with default state } function copyResults() { var weightResult = document.getElementById('weightResult').innerText; var volumeResult = document.getElementById('volumeResult').innerText; var densityResult = document.getElementById('densityResult').innerText; var totalVolumeResult = document.getElementById('totalVolumeResult').innerText; var steelType = document.getElementById('steelType').options[document.getElementById('steelType').selectedIndex].text; var shape = document.getElementById('shape').options[document.getElementById('shape').selectedIndex].text; var quantity = document.getElementById('quantity').value; var dimensionLabels = []; var dimensionValues = []; var formulaInfo = shapeFormulas[currentShape]; for(var i=0; i<formulaInfo.dims.length; i++){ dimensionLabels.push(formulaInfo.dims[i].replace(' (mm)', '')); dimensionValues.push(document.getElementById('dimension' + (i+1)).value); } if (currentShape === 'angle') { dimensionLabels.push("Leg 1"); dimensionValues.push(document.getElementById('dimension4').value); } if (currentShape === 'beam' || currentShape === 'channel') { dimensionLabels.push("Web Thickness"); dimensionValues.push(document.getElementById('dimension4').value); dimensionLabels.push("Flange Thickness"); dimensionValues.push(document.getElementById('dimension5').value); } var copyText = `— Steel Weight Calculation Summary —\n\n`; copyText += `Steel Type: ${steelType}\n`; copyText += `Shape: ${shape}\n`; for(var i=0; i<dimensionLabels.length; i++){ copyText += `${dimensionLabels[i]}: ${dimensionValues[i]} mm\n`; } copyText += `Quantity: ${quantity}\n\n`; copyText += `— Results —\n`; copyText += `Volume (per piece): ${volumeResult} mm³\n`; copyText += `Density: ${densityResult} kg/m³\n`; copyText += `Total Steel Volume: ${totalVolumeResult} m³\n`; copyText += `Total Weight: ${weightResult} kg\n\n`; copyText += `Formula Used: Weight = Total Steel Volume * Density`; // Use a temporary textarea to copy var textArea = document.createElement("textarea"); textArea.value = copyText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied!' : 'Failed to copy results.'; console.log(msg); // Optionally show a temporary message to the user var tempMsg = document.createElement('div'); tempMsg.innerText = msg; tempMsg.style.cssText = 'position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: var(–primary-color); color: white; padding: 15px; border-radius: 5px; z-index: 1000;'; document.body.appendChild(tempMsg); setTimeout(function(){ tempMsg.remove(); }, 2000); } catch (err) { console.error('Oops, unable to copy', err); } document.body.removeChild(textArea); } function initChart() { var ctx = document.getElementById('weightDistributionChart').getContext('2d'); chartInstance = new Chart(ctx, { type: 'bar', data: { labels: ['Carbon Steel', 'Stainless Steel', 'Alloy Steel'], datasets: [{ label: 'Standard Density (kg/m³)', data: [densities.carbon, densities.stainless, densities.alloy], backgroundColor: [ 'rgba(0, 74, 153, 0.6)', 'rgba(40, 167, 69, 0.6)', 'rgba(108, 117, 125, 0.6)' ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(40, 167, 69, 1)', 'rgba(108, 117, 125, 1)' ], borderWidth: 1 }, { label: 'Estimated Weight for Sample (kg)', // Placeholder, updated on calculation data: [0, 0, 0], // Initial data backgroundColor: [ 'rgba(0, 74, 153, 0.3)', 'rgba(40, 167, 69, 0.3)', 'rgba(108, 117, 125, 0.3)' ], borderColor: [ 'rgba(0, 74, 153, 0.8)', 'rgba(40, 167, 69, 0.8)', 'rgba(108, 117, 125, 0.8)' ], borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Value' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Steel Properties Comparison' } } } }); } function updateChart(currentSteelType, currentWeight) { if (!chartInstance) { initChart(); // Initialize if not already done } var datasetWeights = [0, 0, 0]; // Initialize weights for all types to 0 var chartLabels = chartInstance.data.labels; // Find the index of the currently calculated steel type var currentIndex = chartLabels.indexOf(currentSteelType.charAt(0).toUpperCase() + currentSteelType.slice(1) + " Steel"); // Match label casing if (currentIndex !== -1) { // Update the weight for the current steel type datasetWeights[currentIndex] = parseFloat(currentWeight); } else { // If the selected type doesn't match labels directly (e.g., 'alloy' vs 'Alloy Steel') // Try matching by substring or case-insensitivity if needed. // For now, assume direct match or handle potential discrepancies. console.warn("Could not find exact match for chart update:", currentSteelType); } // Update the second dataset (Estimated Weight) chartInstance.data.datasets[1].data = datasetWeights; chartInstance.update(); } // Initial setup document.addEventListener('DOMContentLoaded', function() { document.getElementById('shape').addEventListener('change', updateShapeInputs); updateShapeInputs(); // Set initial inputs for default shape initChart(); // Initialize the chart });

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