Resource Loading Calculator
What is a Resource Loading Calculator?
What is Resource Loading?
Resource Loading is the process of assigning required labor headcount and equipment units to scheduled activities across calendar timeline periods.
Formula
Daily Required Headcount = Total Required Scope Man-Hours ÷ (Target Duration Days × Daily Shift Hours)
Variables Explanation
- Total Scope Man-Hours: Total effort needed.
- Target Duration: Allowed calendar work days.
- Shift Hours: Daily working hours.
How to Calculate
1. Input total required scope man-hours.
2. Input target completion duration in days.
3. Input shift hours per day.
4. Review required daily worker headcount.
Worked Example
Scope Effort: Formwork Assembly = 1,600 Man-Hours.
Target Schedule Duration: Must finish in 10 working days.
Shift Length: 8 hours/day.
Calculation: Daily Headcount = 1,600 ÷ (10 × 8) = 20 Workers per day.
Practical Construction & Project Controls Use
Used in generating Primavera P6 manpower histograms, site camp accommodation planning, and labor supply subcontracting.
Understanding the Result
Outputs daily worker density required on site. Prevents under-staffing delays.
Limitations & Assumptions
Assumes uniform labor distribution. Real construction follows ramp-up, peak, and ramp-down S-curve distributions.
Frequently Asked Questions
What is resource loading in Primavera P6?
Resource loading involves assigning manpower, materials, and equipment to activities to calculate total resource demand over time.
What is a manpower histogram?
A graphical bar chart displaying required labor headcount per day or week across the project lifecycle.
What is resource leveling?
Resource leveling adjusts activity start dates within float limits to eliminate extreme peak labor demand spikes.
What happens if site space cannot accommodate required peak headcount?
Work must be extended over a longer duration or organized into day/night shifts to reduce simultaneous worker density.
How do you calculate peak resource demand?
By summing overlapping daily labor allocations across all active parallel schedule activities.