Harvard ManageMentor — PROJECT MANAGEMENT TOOLS
Worksheet for Developing High-Level Estimates
Use this worksheet to divide a complex activity into smaller tasks—a process known as Work Breakdown Structure
(WBS). Once tasks have been broken down into smaller, more manageable units, estimate the time, costs, and skills
needed to complete each task. These high-level estimates will inform your project plan. Use multiple pages as needed.
Description of the overall project:
To obtain $100 in donations at a car wash on October 11, location will be the 7-11 on McCulock Rd and Alafaya. The car
wash will start at 10:00am and end at 3:00 pm.
What is the smallest unit of time that you want to schedule? For example, if you want to schedule to the nearest day,
you will need to break down work to the point where tasks take a day to perform.
Major Task
Car Wash
Level 1
Subtasks
Level 2
Subtasks
Level 2
Subtask
Level 2
Subtask
Level 2
Subtask
Duration
(hours/day
s/weeks)
Costs
Skills
Needed
Secure Location
David will secure the 711 location.
5 days
$0
Phone, Car
Obtain Supplies
Matt will supply four
Sponges and four sham
cloths.
Dro will supply three
32oz bottles of soap.
Beverly will supply two
25’ hoses and two
buckets.
5 days
$0
Identify
supplier
5 days
$0
5 days
$0
Identify
supplier
Identify
suppiler
Andrea will hand out
flyers at bake sale
Dan will hand out flyers
at bake sale
Brandon
2 hrs
$0
Friendly
2 hrs
$0
Friendly
2 hrs
$0
Friendly
20 days
$0
Phone,
Car,
Identify
supplier,
and
Friendly
Advertising
Total and 6 hrs
© 2004 Harvard Business School Publishing. All rights reserved.