How to Calculate Manpower Requirements for Schedule Activities (Step-by-Step)
Most construction delays aren't caused by material shortages or design changes.
They're caused by wrong manpower planning.
I've seen projects fall behind schedule because no one properly calculated:
- How many workers were actually needed per activity.
So I put together a step-by-step tutorial on how to calculate manpower for each activity on your project.
Here's the core logic:
→ Define the activity scope and quantity of work
→ Identify the productivity rate per crew per day
→ Calculate the required crew days
→ Match against your activity duration to get your daily headcount
→ Adjust for calendar, shifts, and efficiency factors
It sounds straightforward —
but most site teams skip the productivity rate step entirely.
And that's where the gap between plan and reality starts.
If you're a project manager, planning engineer, or site engineer managing multiple activities in parallel, getting this right is non-negotiable.
📹 Full tutorial in the video above — walk through it with real numbers.