Manpower Planning Calculator
Calculate labor requirements by trade based on scope and productivity rates. Generates man-day estimates, peak workforce, and resource histograms.
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 generate resource histograms based on scope quantities and 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-day totals by trade, peak workforce, and resource loading histogram.
Typical Scenarios in UAE & Gulf Projects
Contractor plans workforce for a 50-floor tower. With 45,000m³ concrete, 4,500T rebar, 120,000m² formwork over 30 months, the calculator determines 850 peak workers across trades: 300 carpenters, 200 steel fixers, 150 concrete workers, plus supervisors. Recommends 20% buffer for summer productivity loss.
Main contractor estimates labor for a 25km road project. Calculator generates 180,000 man-days total with peak of 450 workers during earthworks phase. Resource histogram shows mobilization ramp-up over 3 months, steady state for 12 months, then gradual demobilization.
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