Abstract:
Rework in construction projects has brought in two major challenges: cost overruns
and delay. In this regards a study was conducted by considering various construction
projects in the South West part of Nigeria to understand the causes of rework and the
interventions to mitigate it. Survey research methodologies followed by the conceptual
system dynamics (SD) modelling were used in the analysis. This study identified the
sources of rework in construction projects from the design related, the client related
and the contractor related issues and attempted to derive policy/strategic interventions
to limit or eliminate rework on construction projects and its delivery by using
conceptual SD models based on the influence of the variables on rework. The findings
include that inappropriate scheduling for time pressure or delay at the planning stage,
lack of adherence to the specifications, and non-availability of skilled human resource
are the major causes of rework. However, rework in construction projects would be
reduced or eliminated through policy interventions, such as, achieving client
satisfaction with scheduling for time pressure or delay at the planning stage, adherence
to specifications ensuring quality of work resulting in client satisfaction, and the
availability of skilled manpower ensuring quality management.
