Level: Intermediate
TCM Section(s):
6.4. Forensic Performance Assessment
10.3. Change Management
Venue: 2023 AACE International Conference & Expo
Abstract: One challenge associated with estimating loss of productivity (LoP) in construction is a lack of sufficient records from contractor and/or subcontractors. This reality makes the measured mile (MM) methodology, the most widely accepted LoP technique, a near impossibility. Forensics analysts therefore need to rely on another method proffered in AACE’s Recommended Practice 25R-03 “Estimating Lost Labor Productivity in Construction Claims”.
One credible alternative is the earned value analysis (EVA). Yet as described in 25R-03 the analyst must rely on planned values to determine LoP. Another practical option, not identified in 25R-03, is the hybrid EVA that draws on the tenets of the traditional method, yet mimics the goals established by the MM procedure. By using the hybrid EVA method, the analyst can effectively compare unimpacted and impacted periods of actual productivity through payment applications and a corresponding labor report broken out by scope.
This paper: 1) describes in detail the specific steps to calculate productivity using the hybrid EVA approach, 2) compares its results with the MM method and the EVA (as presented in 25R-03), and 3) discusses benefits and shortcomings that should be considered and avoided when choosing this methodology.
TCM Section(s):
6.4. Forensic Performance Assessment
10.3. Change Management
Venue: 2023 AACE International Conference & Expo
Abstract: One challenge associated with estimating loss of productivity (LoP) in construction is a lack of sufficient records from contractor and/or subcontractors. This reality makes the measured mile (MM) methodology, the most widely accepted LoP technique, a near impossibility. Forensics analysts therefore need to rely on another method proffered in AACE’s Recommended Practice 25R-03 “Estimating Lost Labor Productivity in Construction Claims”.
One credible alternative is the earned value analysis (EVA). Yet as described in 25R-03 the analyst must rely on planned values to determine LoP. Another practical option, not identified in 25R-03, is the hybrid EVA that draws on the tenets of the traditional method, yet mimics the goals established by the MM procedure. By using the hybrid EVA method, the analyst can effectively compare unimpacted and impacted periods of actual productivity through payment applications and a corresponding labor report broken out by scope.
This paper: 1) describes in detail the specific steps to calculate productivity using the hybrid EVA approach, 2) compares its results with the MM method and the EVA (as presented in 25R-03), and 3) discusses benefits and shortcomings that should be considered and avoided when choosing this methodology.