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Agbaxode, P D K, Saghatforoush, E, Dlamini, S and Korsah, J K (2024) Integrated project delivery enablers to enhance conventional project delivery toward improving design documentation quality. Built Environment Project and Asset Management, 14(06), 817-34.

Kamps, M, van den Boomen, M, van den Bogaard, J and Hertogh, M (2024) Intergenerational transfer of engineering expertise: Knowledge continuity management in storm surge barrier engineering. Built Environment Project and Asset Management, 14(06), 874-91.

Kiet, T T (2024) Problematic issues emerging during BIM implementation process in construction organizations. Built Environment Project and Asset Management, 14(06), 892-913.

Rodrigo, N, Perera, S, Senaratne, S and Jin, X (2024) Development of a blockchain-based embodied carbon estimator. Built Environment Project and Asset Management, 14(06), 914-36.

Siamuzwe-Manase, V, Halcro, K R, Kumar, B and Skitmore, M (2024) Project-oriented strategic management of UK construction firms: Towards corporate diversification: critical literature review. Built Environment Project and Asset Management, 14(06), 937-55.

Wickramasinghe, V, Dias, P, Robert, D and Setunge, S (2024) From physical degradation condition ratings of building elements to lost value ratio bands. Built Environment Project and Asset Management, 14(06), 858-73.

  • Type: Journal Article
  • Keywords: building elements; cost-based condition ratings; deficiency-based rectification; lost value ratio; maintenance costing
  • ISBN/ISSN: 2044124X
  • URL: https://doi.org/10.1108/BEPAM-12-2023-0218
  • Abstract:

    Purpose: Defining degradation in terms of physical deficiency-based condition descriptors, combined with Markov chain modelling, has been shown to provide improved predictions of degradation. However, unless these physical conditions are converted to lost value ratios (LVRs), maintenance managers would not be able to grasp the cost implications of degradation. Hence the purpose of this research is to convert the predicted deficiency-based condition ratings to lost value ratio bands. Design/methodology/approach: Rectification costs were found using a Building Schedule of Rates to arrive at LVRs for each of the physical degradation conditions for the 12 building elements studied (ranging from concrete elements through finishes and ceilings to doors and windows). These LVRs were allocated into five bands with LVR interval limits of 0.00, 0.10, 0.25, 0.50, 0.75 and 1.00, with the five intervening ranges corresponding to LVR Bands A to E. These computations were compared with those arrived at independently by industry professionals. Findings: Elements such as doors, widows and ceilings reached the maximum LVR Band E at the worst physical Condition 5 defined. However, Condition 5 for other elements only corresponded to LVR Bands A to D. Some 83% of the LVR bands assigned to the physical conditions were in agreement with those arrived at by the professionals, or differed by only one band. Originality/value: The conversion of deficiency-based conditions to LVR bands yielded a completely new maintenance-oriented perspective on degradation. The banding was done using a novel ranking and clustering process that identified regions of high variation in LVRs as thresholds of the bands.