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21.03.2018 ARDC session #3 measuring work Progress

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Diaa Khalaf, PMP,PMI-RMP
Diaa Khalaf, PMP,PMI-RMP

This document discusses five methods for measuring work progress on construction projects: 1) Units Completed, which measures work as a percentage of total units completed, 2) Cost or Time Ratio, which measures work as a percentage of total budget or time spent, 3) Start-Finish, which assigns percentages based on start and completion, 4) Supervisor's Opinion, which relies on a supervisor's subjective judgment, and 5) Incremental Milestones, which breaks work into weighted subtasks or milestones. Each method is best suited to certain types of activities based on their uniformity, duration, and ability to define progress objectively. Examples are provided to illustrate how to calculate progress for each method.

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PROJECT CONTROLS Diaa Khalaf, Civil Engineer, PMP,PMI-RMP Sr. Project Controls Engineer
MeasuringWork Progress Brief description of the project
Several methods for measuring work progress are suggested. Five of these methods are as follows : Calculating or Estimating the percent complete for . Activity Project 1. Units Completed 2. Cost or Time Ratio 3. Start Finish 4. Supervisors Opinion 5. Incremental Milestones
This method works well for activities with Small, Identical, Repetitive components, of easily measured production of easily measured ,when each piece requires approximately the same level of effort. 1- Units Completed Work Progress = Units completed Total units For example, in an activity involving installing 5000 concrete blocks, 2000 have been installed. Percent complete = 2000 5000 *100 = 40 % 40% Laying bricks or CMUs (concrete masonry units), Excavating, Fishing electric wire, Installing tile or carpet, ..
For example, a project supervision activity scheduled for 10 months with a budget of SAR 200,000. After 2 months if SAR 38,000 is already spent, what is the percent complete ? Cost Ratio = Cost to Date Total Budget Time Ratio = Time Elapsed Total Duration Activities that Uniform throughout the project, Long duration tasks or that are continuous during the life of a project, which are estimated and budgeted on bulk allocations of money and workhours rather than on the basis of production. Project Management, Quality Assurance, Contract Administration, Project Controls , Safety Inspection Percent complete = 2 10 *100 = 20 % Percent complete = 38,000 220,000 *100 = 17 % 17COST RATIO 20TIME RATIO 2- COST OR TIME RATIO:
Examples : Planning activities, flushing ,cleaning, testing 3- Start Finish : Have not started yet 0% Started but not yet finished (an arbitrary amount) 40% or 50% Finished 100 % Small activities or with no or a short duration. Where no intermediate milestones can be defined The effort/time required is very difficult to estimate.
This method relies totally on the foreman or superintendents judgment. Because it does not require actual measurements, it is considered the quickest method. Examples : Dewatering, Temporary construction, Landscaping 4- Supervisors opinion: Used only for relatively minor tasks and where developing a more objective status is not feasible. used when no other method can be suitably Be careful not to overuse this method.
The task is segmented into subtasks and each is assigned an increment of progress weight for the entire task. Completing a subtask is the achievement task. of a milestone. Each subtasks assigned a weight that is approximately equal to its percentage share of effort in the total task . The milestone percentage is normally based. on the number of workhours required 5- Incremental Milestones: Suitable for large and complex or multistage activities.
By J炭lio Reis - Own work, CC BY-SA 3.0,https://commons.wikimedia.org/w/index.php?curid=934562 Roman milestone XXIX on Via Romana XVIII the road linking the Iberian cities of Bracara Augusta and Asturica Augusta Milestones
http://www.dsw-photo.com/Travel/Road-Trip-To-Saudi-Arabia-Qata Milestones
KANBAN BOARD
REFERENCE Mubarak, Saleh. Construction Project Scheduling and Control, Second Edition,
21.03.2018 ARDC session #3 measuring work Progress

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21.03.2018 ARDC session #3 measuring work Progress

  • 1. PROJECT CONTROLS Diaa Khalaf, Civil Engineer, PMP,PMI-RMP Sr. Project Controls Engineer
  • 3. Several methods for measuring work progress are suggested. Five of these methods are as follows : Calculating or Estimating the percent complete for . Activity Project 1. Units Completed 2. Cost or Time Ratio 3. Start Finish 4. Supervisors Opinion 5. Incremental Milestones
  • 4. This method works well for activities with Small, Identical, Repetitive components, of easily measured production of easily measured ,when each piece requires approximately the same level of effort. 1- Units Completed Work Progress = Units completed Total units For example, in an activity involving installing 5000 concrete blocks, 2000 have been installed. Percent complete = 2000 5000 *100 = 40 % 40% Laying bricks or CMUs (concrete masonry units), Excavating, Fishing electric wire, Installing tile or carpet, ..
  • 5. For example, a project supervision activity scheduled for 10 months with a budget of SAR 200,000. After 2 months if SAR 38,000 is already spent, what is the percent complete ? Cost Ratio = Cost to Date Total Budget Time Ratio = Time Elapsed Total Duration Activities that Uniform throughout the project, Long duration tasks or that are continuous during the life of a project, which are estimated and budgeted on bulk allocations of money and workhours rather than on the basis of production. Project Management, Quality Assurance, Contract Administration, Project Controls , Safety Inspection Percent complete = 2 10 *100 = 20 % Percent complete = 38,000 220,000 *100 = 17 % 17COST RATIO 20TIME RATIO 2- COST OR TIME RATIO:
  • 6. Examples : Planning activities, flushing ,cleaning, testing 3- Start Finish : Have not started yet 0% Started but not yet finished (an arbitrary amount) 40% or 50% Finished 100 % Small activities or with no or a short duration. Where no intermediate milestones can be defined The effort/time required is very difficult to estimate.
  • 7. This method relies totally on the foreman or superintendents judgment. Because it does not require actual measurements, it is considered the quickest method. Examples : Dewatering, Temporary construction, Landscaping 4- Supervisors opinion: Used only for relatively minor tasks and where developing a more objective status is not feasible. used when no other method can be suitably Be careful not to overuse this method.
  • 8. The task is segmented into subtasks and each is assigned an increment of progress weight for the entire task. Completing a subtask is the achievement task. of a milestone. Each subtasks assigned a weight that is approximately equal to its percentage share of effort in the total task . The milestone percentage is normally based. on the number of workhours required 5- Incremental Milestones: Suitable for large and complex or multistage activities.
  • 9. By J炭lio Reis - Own work, CC BY-SA 3.0,https://commons.wikimedia.org/w/index.php?curid=934562 Roman milestone XXIX on Via Romana XVIII the road linking the Iberian cities of Bracara Augusta and Asturica Augusta Milestones
  • 12. REFERENCE Mubarak, Saleh. Construction Project Scheduling and Control, Second Edition,

Editor's Notes

  1. The project manager or superintendent can assign a percent complete to a small, simple activity easier and more objectively than he or she can do so for a large, complex activity. This subject is broad. In this chapter, it is covered only briefly. There are no correct and incorrect methods; there are only more and less suitable methods for the specific type of activity under consideration.
  2. In some cases, errors may arise despite the similarity in units because of the effect of learning curves or differing conditions. As an example of the second case is when a mason is installing block or brick to an 8-ft high wall. The blocks on the high courses take more time than those in lower courses. When the error is small, it is ignored.
  3. Another alternative is the man-hour ratio (actual man-hours consumed divided by total man-hours budgeted). The time ratio method for individual activities is similar to the duration percent complete and baseline duration percent complete methods for calculating the project percent complete. These methods are discussed in the next section
  4. The contractor may use this method to exaggerate the percent complete for early payment.