Manpower Planning Calculator
Calculate labor requirements by trade based on scope and productivity rates. Generates man-day estimates, trade durations and peak workforce.
Leave blank to use default: 2.5
Leave blank to use default: 6
Leave blank to use default: 12
Leave blank to use default: 3
Total Man-Days
283
Peak Workforce
9
Duration
34 days
Total Man-Days
283
Peak Workers
9
Avg. Workers
8.3
Notes:
- Man-days = Scope Quantity ÷ Productivity Rate
- Duration = Man-days ÷ (Crew Size × Shift Factor)
- Shift factor adjusts for hours: 8h ÷ 8h = 1.00
- Peak workforce assumes all trades work simultaneously
- Add overtime or weekend work by increasing shift hours
ESTIMATION NOTICE
This calculator provides APPROXIMATE QUANTITIES for budgeting and planning purposes.
Please note:
• Results include standard wastage factors but actual waste may vary based on site conditions, workmanship, and material quality.
About This Calculator
The Manpower Planning Calculator helps project managers and contractors estimate labor requirements by trade for construction projects across the UAE and Gulf. Calculate man-day estimates, peak workforce needs, and trade durations based on scope quantities and indicative productivity rates. Essential for tender pricing, mobilization planning, and labor camp sizing in Gulf construction.
When to Use This Calculator
- Estimating labor costs during tender preparation
- Planning workforce mobilization and demobilization
- Sizing labor camps and accommodation requirements
- Generating resource S-curves for project planning
- Coordinating with subcontractors on labor allocation
How to Use This Calculator
Enter Scope Quantities
Input quantities for major work items (concrete m³, formwork m², rebar tonnes, etc.).
Set Productivity Rates
Enter or use default productivity rates for each trade (adjusted for Gulf conditions).
Specify Duration
Input project duration to calculate peak manning requirements.
Adjust for Factors
Apply factors for overtime, shift work, weather productivity loss, and learning curves.
Review Results
Get man-days and duration by trade, total man-days and peak workforce.
Typical Scenarios in UAE & Gulf Projects
A contractor sizes the frame gangs for a tower: 45,000 m³ of concrete, 4,500 t of rebar and 120,000 m² of formwork. At the tool's indicative rates (2.5 m³, 0.5 t and 8 m² per man-day) that is 18,000 + 9,000 + 15,000 = 42,000 man-days. With crews of 30 concrete workers, 15 steel fixers and 25 carpenters, each trade takes 600 working days, a combined peak of 70 workers on these three trades. Supervision and other trades are added separately.
A main contractor enters a subcontractor's scope quantities and proposed crew sizes to check whether the implied durations fit the programme. Where a trade's duration exceeds the available working days, the crew size or productivity assumption needs to change.
Frequently Asked Questions
Take Your Calculations Further
This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: CIOB Code of Practice for Project Management, RSMeans Productivity Data