In addition to the recommended cost performance indices for a construction work package (CWP) detailed in the last article, other schedules, productivity, and HSE performance indices need to be reported when delivering the project’s construction work packages. The list of those indices includes:
- Work Package Schedule Factor = Actual work package duration / (Estimated work package duration at tender stage + Approved changes to work package duration)
- Time Per Unit at Completion = Actual duration for the product at work package completion / Total installed quantity of the work package
- Work Package Rework Time Factor = Total duration of work package rework / Actual work package duration
- Time Predictability = (Actual work package duration – Estimated work package duration at tender stage) / Estimated work package duration at tender stage
- Construction Labor Productivity (Physical Work) = Actual direct resource hours of the work package / Total installed quantity of the work package
- Lost Time Rate = Amount of time lost to incidents on the work package / Total hours worked on the work package
- Lost Time Frequency = Number of lost time incidents on the work package / Total hours worked on the work package
Using the same PMWeb Project Management Information System (PMIS) platform, which was used to capture the data, calculate, monitor, evaluate, and report the cost performance indices for the construction work packages (CWP). Other PMWeb modules will be used for the different schedules, productivity, and HSE indices. PMWeb modules for importing the project schedule, change order, daily reports, and safety incidents will be used to capture the data needed for those additional performance indices.
For example, the PMWeb Scheduling module allows importing the Primavera P6 or MS Project’s project schedule. It can make the schedule for construction work packages (CWP) within the PMWeb scheduling module. The imported schedules will provide the baseline or planned durations and actual durations for each construction work package. Approved duration changes will be captured in the Change Order module, for which it will also capture the cost implications of the approved change orders. Those values are the values needed to calculate the first schedule performance index, Work Package Schedule Factor.
The second schedule performance index, Time Per Unit at Completion, will use the imported actual duration for the Construction Work Package and the total installed quantity of the construction work package as captured in the PMWeb Daily Report module particulars of installed work in place. It should be noted that although the daily report could include details of actual quantities of the different work types needed for each work package, nevertheless, each work package will have a specific essential work type that will be used to report the Time Per Unit at the Completion performance index.
The same PMWeb daily report module will also record the additional time spent reworking defects reported on each construction work package. This data is needed to calculate the third schedule performance index, Work Package Rework Time Factor where the total duration reported on the work package reword will be divided over the actual work package duration. The last schedule performance index, Time Predictability, will be calculated by dividing the difference between the actual work package duration and planned work package duration over the planned work package duration. The daily report module will also capture the data needed for Construction Labor Productivity (Physical Work) performance index. The daily report will charge the actual direct resource hours of the work package and the Total installed quantity of the work package.
For the HSE performance indices, Lost Time Rate and Lost Time Frequency, PMWeb Safety Incident module will capture the amount of time lost to incidents on the work package and the number of lost time incidents on the work package. The total hours worked on the work package will be captured from the Daily Report module, which is also used to calculate the Construction Labor Productivity (Physical Work) performance index.
The data captured in the PMWeb safety incident module will provide the organization with the ability to analyze the causes incurred across all construction work packages to provide the organization with a better understanding of actions and measures that need to be undertaken to improve the adopted accident prevention and other HSE best practices. The same concept applies to all other data captured for the different cost, schedule, resources, quality, risk, and other processes used in managing the project’s overall construction work packages.
