// JavaScript Document let currentUnit = 'metric'; function setUnit(unit) { currentUnit = unit; document.getElementById('brick-results').style.display = 'none'; const btnMetric = document.getElementById('btn-metric'); const btnImperial = document.getElementById('btn-imperial'); const selectBox = document.getElementById('brick-size'); const jointInput = document.getElementById('mortar-joint'); if (unit === 'metric') { btnMetric.classList.add('active'); btnImperial.classList.remove('active'); document.getElementById('label-length').innerText = 'Main Wall Length (metres):'; document.getElementById('label-width').innerText = 'Main Wall Height (metres):'; document.getElementById('wall-length').placeholder = 'e.g. 6'; document.getElementById('wall-height').placeholder = 'e.g. 2.4'; document.getElementById('label-b-length').innerText = 'Unit Length (mm):'; document.getElementById('label-b-height').innerText = 'Unit Height (mm):'; document.getElementById('brick-length').placeholder = 'e.g. 215'; document.getElementById('brick-height').placeholder = 'e.g. 65'; document.getElementById('label-joint').innerText = 'Mortar Joint Thickness (mm):'; jointInput.value = "10"; document.getElementById('label-b-width').innerText = 'Individual Unit Depth / Width (mm):'; } else { btnImperial.classList.add('active'); btnMetric.classList.remove('active'); document.getElementById('label-length').innerText = 'Main Wall Length (feet):'; document.getElementById('label-width').innerText = 'Main Wall Height (feet):'; document.getElementById('wall-length').placeholder = 'e.g. 20'; document.getElementById('wall-height').placeholder = 'e.g. 8'; document.getElementById('label-b-length').innerText = 'Unit Length (inches):'; document.getElementById('label-b-height').innerText = 'Unit Height (inches):'; document.getElementById('brick-length').placeholder = 'e.g. 8.5'; document.getElementById('brick-height').placeholder = 'e.g. 2.6'; document.getElementById('label-joint').innerText = 'Mortar Joint Thickness (inches):'; jointInput.value = "0.4"; document.getElementById('label-b-width').innerText = 'Individual Unit Depth / Width (inches):'; } handleSizeChange(); for (let option of selectBox.options) { if (option.value !== 'custom') { option.text = unit === 'metric' ? option.getAttribute('data-metric') : option.getAttribute('data-imperial'); } } const rows = document.querySelectorAll('.opening-row'); rows.forEach(row => { const wLabel = row.querySelector('.op-w-label'); const hLabel = row.querySelector('.op-h-label'); wLabel.innerText = unit === 'metric' ? 'Width (m):' : 'Width (ft):'; hLabel.innerText = unit === 'metric' ? 'Height (m):' : 'Height (ft):'; }); } function handleSizeChange() { const selectBox = document.getElementById('brick-size'); const val = selectBox.value; const selectedOption = selectBox.options[selectBox.selectedIndex]; document.getElementById('custom-fields-wrapper').style.display = (val === 'custom') ? 'block' : 'none'; document.getElementById('brick-results').style.display = 'none'; if (val !== 'custom') { let defaultWidth = parseFloat(selectedOption.getAttribute('data-width')); if (currentUnit === 'imperial') { defaultWidth = (defaultWidth / 25.4).toFixed(1); } document.getElementById('brick-width').value = defaultWidth; } } function handleOpeningsToggle() { const isChecked = document.getElementById('toggle-openings').checked; const container = document.getElementById('openings-fields-wrapper'); container.style.display = isChecked ? 'block' : 'none'; document.getElementById('brick-results').style.display = 'none'; if (isChecked && document.getElementById('openings-list').children.length === 0) { addOpeningRow(); } } function handleMortarToggle() { const isChecked = document.getElementById('toggle-mortar').checked; document.getElementById('mortar-fields-wrapper').style.display = isChecked ? 'block' : 'none'; document.getElementById('brick-results').style.display = 'none'; } function addOpeningRow() { const list = document.getElementById('openings-list'); const wLabelText = currentUnit === 'metric' ? 'Width (m):' : 'Width (ft):'; const hLabelText = currentUnit === 'metric' ? 'Height (m):' : 'Height (ft):'; const row = document.createElement('div'); row.className = 'opening-row'; row.innerHTML = ` Remove `; list.appendChild(row); } function calculateBricks() { const wallLength = parseFloat(document.getElementById('wall-length').value); const wallHeight = parseFloat(document.getElementById('wall-height').value); const selectBox = document.getElementById('brick-size'); const selectedSize = selectBox.value; const selectedOption = selectBox.options[selectBox.selectedIndex]; const skinMultiplier = parseInt(document.getElementById('wall-skin').value); const wastageMultiplier = parseFloat(document.getElementById('wastage').value); const rawJoint = parseFloat(document.getElementById('mortar-joint').value); if (isNaN(wallLength) || wallLength <= 0 || isNaN(wallHeight) || wallHeight <= 0 || isNaN(rawJoint) || rawJoint < 0) { alert('Please enter valid positive numbers for main wall dimensions.'); return; } // Process subtraction values with physical boundary limit checking loops let totalOpeningArea = 0; if (document.getElementById('toggle-openings').checked) { const widths = document.querySelectorAll('.op-width'); const heights = document.querySelectorAll('.op-height'); const unitLabelText = currentUnit === 'metric' ? 'm' : 'ft'; for (let i = 0; i < widths.length; i++) { let w = parseFloat(widths[i].value) || 0; let h = parseFloat(heights[i].value) || 0; // Direct individual opening dimensional validation checks if (w > wallLength) { alert(`Validation Error: Opening #${i+1} width (${w}${unitLabelText}) cannot be wider than the actual wall length (${wallLength}${unitLabelText}).`); return; } if (h > wallHeight) { alert(`Validation Error: Opening #${i+1} height (${h}${unitLabelText}) cannot be taller than the actual wall height (${wallHeight}${unitLabelText}).`); return; } totalOpeningArea += (w * h); } } let rawWallArea = wallLength * wallHeight; let netCalculatedArea = rawWallArea - totalOpeningArea; if (netCalculatedArea <= 0) { alert('Validation Error: The cumulative surface area of your doors/windows matches or completely exceeds your structural wall area boundary layer.'); return; } let bLengthMm = 0; let bHeightMm = 0; let jointMm = currentUnit === 'metric' ? rawJoint : rawJoint * 25.4; let typeLabel = "Units"; if (selectedSize === 'custom') { const rawLength = parseFloat(document.getElementById('brick-length').value); const rawHeight = parseFloat(document.getElementById('brick-height').value); if (isNaN(rawLength) || rawLength <= 0 || isNaN(rawHeight) || rawHeight <= 0) { alert('Please enter valid positive numbers for custom block dimensions.'); return; } bLengthMm = currentUnit === 'metric' ? rawLength : rawLength * 25.4; bHeightMm = currentUnit === 'metric' ? rawHeight : rawHeight * 25.4; } else { const parts = selectedSize.split(','); bLengthMm = parseFloat(parts[0]); bHeightMm = parseFloat(parts[1]); typeLabel = selectedOption.getAttribute('data-type') === 'block' ? 'Blocks' : 'Bricks'; } const effectiveBrickAreaSqm = ((bLengthMm + jointMm) / 1000) * ((bHeightMm + jointMm) / 1000); let baseBricksNeeded = 0; if (currentUnit === 'metric') { baseBricksNeeded = netCalculatedArea / effectiveBrickAreaSqm; } else { const totalNetAreaSqm = netCalculatedArea * 0.092903; baseBricksNeeded = totalNetAreaSqm / effectiveBrickAreaSqm; } const totalBricksFinal = Math.ceil(baseBricksNeeded * skinMultiplier * wastageMultiplier); document.getElementById('res-area').innerText = netCalculatedArea.toFixed(2); document.getElementById('res-unit-label').innerText = currentUnit === 'metric' ? 'm²' : 'sq ft'; document.getElementById('res-material-type').innerText = typeLabel; document.getElementById('res-bricks').innerText = totalBricksFinal.toLocaleString(); if (document.getElementById('toggle-mortar').checked) { const rawBWidth = parseFloat(document.getElementById('brick-width').value); if (isNaN(rawBWidth) || rawBWidth <= 0) { alert('Please enter a valid unit thickness parameter to calculate mortar details.'); return; } let bWidthMm = currentUnit === 'metric' ? rawBWidth : rawBWidth * 25.4; let brickVol = (bLengthMm / 1000) * (bHeightMm / 1000) * (bWidthMm / 1000); let blockUnitVol = ((bLengthMm + jointMm) / 1000) * ((bHeightMm + jointMm) / 1000) * (bWidthMm / 1000); let individualMortarVolM3 = blockUnitVol - brickVol; let totalMortarM3 = individualMortarVolM3 * (baseBricksNeeded * skinMultiplier) * 1.25; let totalWeightKg = totalMortarM3 * 1800; let cementKg = totalWeightKg * 0.20; let sandKg = totalWeightKg * 0.80; const chosenCementBagSize = parseFloat(document.getElementById('bag-size-cement').value); const chosenSandBagSize = parseFloat(document.getElementById('bag-size-sand').value); if (currentUnit === 'metric') { document.getElementById('res-sand').innerText = Math.ceil(sandKg).toLocaleString(); document.getElementById('res-sand-unit').innerText = 'kg'; document.getElementById('res-cement').innerText = Math.ceil(cementKg).toLocaleString(); document.getElementById('res-cement-unit').innerText = 'kg'; let cementBagsCount = Math.ceil(cementKg / chosenCementBagSize); let sandUnitsCount = Math.ceil(sandKg / chosenSandBagSize); document.getElementById('res-cement-bags').innerText = cementBagsCount; document.getElementById('res-sand-bags').innerText = sandUnitsCount + (chosenSandBagSize >= 850 ? " Bulk Bag(s)" : " Handy Bag(s)"); } else { let sandLbs = sandKg * 2.20462; let cementLbs = cementKg * 2.20462; document.getElementById('res-sand').innerText = Math.ceil(sandLbs).toLocaleString(); document.getElementById('res-sand-unit').innerText = 'lbs'; document.getElementById('res-cement').innerText = Math.ceil(cementLbs).toLocaleString(); document.getElementById('res-cement-unit').innerText = 'lbs'; let imperialCementBagLb = chosenCementBagSize === 25 ? 50 : 90; let imperialSandBagLb = chosenSandBagSize === 850 ? 2000 : 50; let cementBagsCount = Math.ceil(cementLbs / imperialCementBagLb); let sandUnitsCount = Math.ceil(sandLbs / imperialSandBagLb); document.getElementById('res-cement-bags').innerText = cementBagsCount; document.getElementById('res-sand-bags').innerText = sandUnitsCount + (imperialSandBagLb >= 2000 ? " Tonne Bulk Bag(s)" : " Handy Bag(s)"); } document.getElementById('sand-output').style.display = 'block'; document.getElementById('sand-bags-output').style.display = 'block'; document.getElementById('cement-output').style.display = 'block'; document.getElementById('cement-bags-output').style.display = 'block'; } else { document.getElementById('sand-output').style.display = 'none'; document.getElementById('sand-bags-output').style.display = 'none'; document.getElementById('cement-output').style.display = 'none'; document.getElementById('cement-bags-output').style.display = 'none'; } document.getElementById('brick-results').style.display = 'block'; } function resetBricks() { document.getElementById('wall-length').value = ''; document.getElementById('wall-height').value = ''; document.getElementById('brick-length').value = ''; document.getElementById('brick-height').value = ''; document.getElementById('openings-list').innerHTML = ''; document.getElementById('brick-size').selectedIndex = 0; document.getElementById('wall-skin').selectedIndex = 0; document.getElementById('wastage').selectedIndex = 0; document.getElementById('toggle-openings').checked = false; document.getElementById('toggle-mortar').checked = false; document.getElementById('custom-fields-wrapper').style.display = 'none'; document.getElementById('openings-fields-wrapper').style.display = 'none'; document.getElementById('mortar-fields-wrapper').style.display = 'none'; document.getElementById('brick-results').style.display = 'none'; document.getElementById('res-area').innerText = '0'; document.getElementById('res-bricks').innerText = '0'; document.getElementById('res-sand').innerText = '0'; document.getElementById('res-cement').innerText = '0'; setUnit(currentUnit); }