Planning Engineer Interview Questions and Answers (Q & A)

Q1: What is a Baseline Project Schedule?
A baseline is an approved programme by both parties which is used as a benchmark to measure the progress of a project.

Q2: How much duration a milestone activity normally equal?
All types of milestones have zero durations

Q3: What is the difference between Free Float & Total Float?
Free Float: the amount of time we can delay an activity without affecting the early start date of its successor activity.
Total Float: the amount of time we can delay an activity from its early start date without delaying the whole project finish.

Q4: What is the CPI?
It’s a Cost Performance Indicator and it evaluates the progress of works in the sense if the project is under-budget, over-budgeted or on track. The formula for CPI is: CPI =EV/AC

Q5: What is the SPI?
It is the Schedule Performance Indicator and indicates the performance of work is completed to the baseline schedule. The formula for SPI is SPI= EV/PV

Q6: What is a different % complete type in Primavera P6?
Physical Percent Complete
Units Percent Complete
Duration Percent Complete

Q7: What is the different duration type in Primavera P6?
Fixed Units
Fixed Units/time
Fixed Duration & Units
Fixed Duration & Units/Time

Q8: What are the different types of activities in Primavera P6?

  • Task-Dependent: In this type assigned resources are scheduled based on the activity’s calendar itself.
  • Resource Dependent: In this type, the assigned resources are scheduled based on assigned calendars.
  • Level of Effort: This type of activity goes with dependent activities like administrative issues.
  • Start Milestone: This is designated for the start of a major phase or stage of a project.  A milestone that has zero duration. It is just like a flag.
  • Finish Milestone: This is designated for the finish of the major phase or stage of a project. A milestone that has zero duration. It is just like a flag.

Q9: How does Primavera P6 calculate total float?
Total Float = Late Start – Early Start
Total Float = Late Finish – Early Finish

Q10: What is the difference between the recovery schedule and the revised schedule?
Recovery schedule: Here we maintain the same project completion date as in consented baseline but modification could be done to those activities which are yet to start or progressing by crashing and resource acceleration
Revised schedule: Here we slipped the consented project completion dated and we plan for activities which are yet to start or progressing

Q11: How many baselines are permitted in a project and what is the basis of the project’s success or failure?
A project must have a minimum one project baseline

Q12: What are the Key Performance Indicators – KPI’s?
A KPI is a type of performance measurement for a particular activity where it is engaged. KPI’s are defined by keeping the “What matters most” factor. Careful study and analysis must be defined because it differs from organization to organization as a critical KPI for you may not be of any interest to other organizations of the same type. It’s a very diverse area. Examples Rubber liner, Concrete work, Machine failures for a specific duration, plantation, number of hires/fires, training, etc.

Q13: What is the difference between Retained Logic and Progress Override?
When using Retained Logic, the activity that starts out of sequence can not be completed until its predecessor has finished. The remaining duration of the out-of-sequence activity is scheduled to start after the predecessor is scheduled to finish. Retained Logic follows the logic of networks.
When scheduling with Progress Override, Primavera P6 ignores the relationship between the activities and schedules any remaining duration of the “out of sequence” operation from the date of results.

Read more about: Retained Logic and Progress Override

Q14: What is the DCMA 14-point schedule assessment?
Well, it’s simply determining whether the schedule is well-built – whether it adheres to a set of best practices that are considered important for the success and manageability of the project. Such best practices have been broken down into a list of 14 Points controls Check.

Learn Everything about: DCMA 14 Point Assessment

Q15: How can you perform the updates?

  1. An excel sheet should be created and includes the Trades, Floors, etc, and a cell for the progress % input.
  2. The progress % input must be entered by the Project Managers/Construction Managers and the planning engineer must validate these progress percentages.
  3. The data should be entered into the programme update

Q16: What is the concurrent delay?

When two events or more of delay on the critical path are occurring at the same time, one affecting activities on the Contractor’s risk and the other affecting activities on the Employer’s risk.

Q17: How can you create a good schedule?
1.Schedule the activities to reflect the project’s contract scope of work.
2.Dates must be in accordance with the contract.
3.Meets the contractual requirements /milestones.
4.The Activity durations should be reasonable: activity duration must be calculated based on
the quantity of work and resources available to be applied to the work.

Q18:How will you load the manpower resources into your schedule?
Man Power loading is based on the productivity rates of my company productivity rates, we have to calculate the required man-hours for each B.O.Q item by using this formula :
Required Manhours = QTY / (Productivity Rate)

Q19:What are the involvements of Planning Engineer and vital Role in Project
Since Planning Engineer involves directly in project management activities, project
leadership makes decisions concerning the development of plans, and how the work
process has broken down & control how manages. Track, review, forecast &
give inputs on the status of the project and product. Furthermore planning engineer
should inform the project team where s/he recognize and potential risks.

See Also
Civil Engineer Interview Questions and Answers
Master Schedule in Project Management