Post-Construction Cleaning Time Estimator
ANA›Life Services Authority›National Calculator Authority›Post-Construction Cleaning Time Estimator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Post-Construction Cleaning Time Estimator
Estimate the total cleaning time required after construction or renovation based on square footage, construction type, number of rooms, and crew size.
Total Area (sq ft)
Construction / Renovation Type
Light Renovation (paint, minor repairs) Medium Renovation (flooring, drywall, fixtures) Heavy Construction (new build, major structural work)
Number of Rooms / Spaces
Number of Windows
Crew Size (number of cleaners)
Number of Floors / Levels
Calculate Cleaning Time
function posCalc() { var sqft = parseFloat(document.getElementById('pos-sqft').value); var ctype = document.getElementById('pos-construction-type').value; var rooms = parseFloat(document.getElementById('pos-rooms').value); var windows = parseFloat(document.getElementById('pos-windows').value); var crew = parseFloat(document.getElementById('pos-crew').value); var floors = parseFloat(document.getElementById('pos-floors').value); var resultEl = document.getElementById('pos-result');
// --- Input Validation --- if (isNaN(sqft) || sqft Please enter a valid area (minimum 100 sq ft).'; return; } if (isNaN(rooms) || rooms Please enter at least 1 room.'; return; } if (isNaN(windows) || windows Please enter a valid number of windows (0 or more).'; return; } if (isNaN(crew) || crew Crew size must be at least 1.'; return; } if (isNaN(floors) || floors Number of floors must be at least 1.'; return; }
/ * ── FORMULA ────────────────────────────────────────────────────────────── * * Base Rate (hrs per sq ft) by construction type: * Light = 0.030 hrs/sq ft * Medium = 0.050 hrs/sq ft * Heavy = 0.075 hrs/sq ft * * Area Time: * T_area = sqft × base_rate * * Room Setup Time (each room requires initial setup/inspection): * T_rooms = rooms × 0.25 hrs * * Window Cleaning Time: * T_windows = windows × 0.20 hrs (both sides, post-construction residue) * * Floor Transition Penalty (moving equipment between floors): * T_floors = (floors - 1) × 0.50 hrs * * Total Solo Time: * T_total_solo = T_area + T_rooms + T_windows + T_floors * * Crew Efficiency Factor (diminishing returns with larger crews): * efficiency = 1 + (crew - 1) × 0.75 * (first cleaner = 100%, each additional = 75% marginal contribution) * * Adjusted Total Time (hours): * T_adjusted = T_total_solo / efficiency * * ───────────────────────────────────────────────────────────────────────── /
var baseRate; var ctypeLabel; if (ctype === 'light') { baseRate = 0.030; ctypeLabel = 'Light Renovation'; } else if (ctype === 'medium') { baseRate = 0.050; ctypeLabel = 'Medium Renovation'; } else { baseRate = 0.075; ctypeLabel = 'Heavy Construction'; }
var T_area = sqft * baseRate; var T_rooms = rooms * 0.25; var T_windows = windows * 0.20; var T_floors = (floors - 1) * 0.50;
var T_solo = T_area + T_rooms + T_windows + T_floors;
var efficiency = 1 + (crew - 1) * 0.75; var T_adjusted = T_solo / efficiency;
// Round up to nearest 0.5 hr for scheduling purposes var T_scheduled = Math.ceil(T_adjusted * 2) / 2;
var days8hr = (T_scheduled / 8).toFixed(1); var days10hr = (T_scheduled / 10).toFixed(1);
resultEl.innerHTML = '### Estimated Cleaning Time ' + '' + 'Construction Type' + ctypeLabel + '' + 'Area Time' + T_area.toFixed(2) + ' hrs (' + sqft.toLocaleString() + ' sq ft × ' + baseRate.toFixed(3) + ' hrs/sq ft)' + 'Room Setup Time' + T_rooms.toFixed(2) + ' hrs (' + rooms + ' rooms × 0.25 hrs)' + 'Window Cleaning Time' + T_windows.toFixed(2) + ' hrs (' + windows + ' windows × 0.20 hrs)' + 'Floor Transition Time' + T_floors.toFixed(2) + ' hrs (' + (floors - 1) + ' transitions × 0.50 hrs)' + 'Total Solo Time' + T_solo.toFixed(2) + ' hrs' + 'Crew Efficiency Factor' + efficiency.toFixed(2) + 'x (' + crew + ' cleaners)' + 'Adjusted Total Time' + T_adjusted.toFixed(2) + ' hrs → Scheduled: ' + T_scheduled.toFixed(1) + ' hrs' + 'Equivalent Work Days' + days8hr + ' days (8-hr shift) | ' + days10hr + ' days (10-hr shift)' + ''; }
#### Formula
Step 1 – Base Area Time: Tarea = Area (sq ft) × Base Rate (hrs/sq ft) • Light Renovation: 0.030 hrs/sq ft • Medium Renovation: 0.050 hrs/sq ft • Heavy Construction: 0.075 hrs/sq ft
Step 2 – Room Setup Time: Trooms = Number of Rooms × 0.25 hrs
Step 3 – Window Cleaning Time: Twindows = Number of Windows × 0.20 hrs
Step 4 – Floor Transition Penalty: Tfloors = (Floors − 1) × 0.50 hrs
Step 5 – Total Solo Time: Tsolo = Tarea + Trooms + Twindows + Tfloors
Step 6 – Crew Efficiency Factor: Efficiency = 1 + (Crew Size − 1) × 0.75 (Each additional cleaner contributes 75% of a solo cleaner's output due to coordination overhead.)
Step 7 – Adjusted Total Time: Tadjusted = Tsolo ÷ Efficiency Tscheduled = Rounded up to nearest 0.5 hr
#### Assumptions & References
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