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Construction Manpower Histogram

Free resource loading histogram and manpower planning tool. Plan headcount by discipline, build weekly or monthly loading tables and see peak manpower.

Sample Project
Plan design-phase manpower by discipline and role, build the period-wise loading table and stacked histogram, and track peak/average headcount across the programme. Calculate physical progress from activities/weights and compare planned vs. actual progress.
by Shahid Pervaiz: pervaiz.shahid@gmail.com
Design Disciplines0
Peak Manpower0
Status Date—
Rev.A
Not saved to a file yet

Project Setup

Loading Summary

Monthly view

Design Manpower Histogram

Headcount by discipline, stacked per period — bars show total design team size

Resource Loading Table

Discipline · Role · Unit · headcount per period · Peak · Avg — edit cells directly
# Discipline Role Unit
Method & practical use

Understand the result.

Free resource loading histogram and manpower planning tool. Plan headcount by discipline, build weekly or monthly loading tables and see peak manpower.

How to use this tool

  1. Enter the project details and reporting date; replace any sample records.
  2. Add or import your records, then review the summaries and outstanding actions.
  3. Save the project and use the available export or print controls to share the current report.

Units & method

Use the dates, quantities and currency shown in the workspace. Keep one currency and a consistent reporting cut-off.

Aggregate planned and actual resource counts by discipline and reporting period. Peaks show concurrent demand, not cumulative headcount.

Method: the owner’s supplied worksheet and the arithmetic described above.

Worked examples

Illustrative inputs for checking the method; these are not project records.

Worked scenario

Example: eight civil staff plus four electrical staff in the same week gives a combined planned demand of 12 people.

Frequently asked questions

What does this tool calculate or track?

Free resource loading histogram and manpower planning tool. Plan headcount by discipline, build weekly or monthly loading tables and see peak manpower.

Which units and assumptions should I use?

Use the dates, quantities and currency shown in the workspace. Keep one currency and a consistent reporting cut-off. Aggregate planned and actual resource counts by discipline and reporting period. Peaks show concurrent demand, not cumulative headcount.

Can I save or share the result?

Use the save, export and print controls shown in this workspace. Where CSV export is available, the exported data can be opened in a spreadsheet. Browser print can save a PDF.

Continue your workflow

How to use the Resource Loading Histogram

Everything runs in your browser — nothing is uploaded. If you are new to the tool, follow these steps in order.

1

See what the tool can do

Press Load Sample Data to fill the tool with a sample design team plan. Then scroll down the page:

  • Project Setup — project name, start date and number of periods. Switch between Monthly and Weekly periods in the toolbar.
  • Loading Summary — peak and average headcount and total man-months.
  • Design Manpower Histogram — the stacked histogram by discipline.
  • Resource Loading Table — one row per role, with the number of people in each period.

The first time you open the tool (when there is no data of yours in this browser) the sample is loaded for you, so you can see how it works straight away. Replace it with your own entries, press + New Project / Clear All to start empty, or load your saved project.

Load Sample Data replaces the data in the tool. Save your own work first.

2

See how the data file looks

Press ↓ Export Table (.csv). It downloads the table as a CSV file that opens in Excel:

ColumnWhat to enterExample
Disciplinee.g. Project Management, Planning, Civil, Structural, Drainage, Geotechnical, QA/QC, CAD, BIMCivil
RolePosition nameSenior Highway Engineer
UnitUsually No.No.
One column per periodNumber of people in that period2
Peak, AvgWorked out by the tool; leave them out or blank—
3

Enter your own data and import it

Replace the sample rows with your own roles. You can import the Excel file (.xlsx) directly, or a CSV. Then press ↑ Import Table (.csv) and choose the file.

  • Discipline, Role and Unit are found by their headings. Every other column is read as a period, in order, so delete the Peak and Avg columns before importing.
  • Set the number of periods in Project Setup first; extra period columns are ignored.
  • Import replaces all roles.
4

Add, edit and delete rows

You can also work straight in the table on the page at any time, with or without a CSV:

  • + Add Design Role adds a new role. Type the numbers into its period cells.
  • The ✕ at the end of a row deletes that role straight away. There is no undo, so save your project first.
5

Save your project and open it later

💾 Save Project (.json) saves the project setup and all roles in one .json project file. 📁 Load Project opens that file again, on any computer.

The note beside the Save button tells you whether you have unsaved changes or when you last saved. If you try to close or leave the page with unsaved changes, the browser asks you to confirm first (not needed when Autosave is ticked, because your work is kept in this browser).

Use the project file for backups and for sharing with colleagues. Don't edit it by hand.

6

Print, PDF and report

  • 🖶 Print / Save as PDF prints the page as you see it, in print-friendly colours. To get a PDF, choose Save as PDF as the printer in the print dialog.
  • 📄 Generate Report opens a resource loading report in a new tab, where you can print it or save it with ⇩ Download HTML. If nothing opens, allow pop-ups for this site.
7

Other buttons and options

  • Autosave in this browser (tick box) — while ticked, your work is kept automatically in this browser and comes back the next time you open the page. It stays only on this computer and browser. It is not a backup; use Save Project for that.
  • 👁 View Current Data shows the whole project as data in a window, where Copy JSON copies it.
  • + New Project clears the project and all roles (it asks first).
  • Clear All removes all roles (it asks first).
8

Choose the date format

Press 📅 Date format in the toolbar and choose how dates are shown and typed in every date box: DD/MM/YYYY, MM/DD/YYYY, YYYY-MM-DD, DD-MM-YYYY, DD.MM.YYYY or DD-Mon-YYYY. Type a date in that format, or click the 📅 in a date box to pick it from a calendar. A date that doesn't fit the format is outlined in red and not accepted.

The same format is used in the printout and in the generated report and its PDF. It changes only how dates look — your saved project and CSV files are not affected. Your choice is remembered in this browser for every tool on this site.

9

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