2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Integration is a key to successful delivery of modular construction (MC). However, off-site construction is still fragmented which can be attributed to undesirable variances in productivity. Such variances are influenced by many factors, among which the potential of key performance indicators (KPIs) cannot be neglected. This study presents a system dynamics (SD)-based model for tracking productivity in delivery processes of MC. KPIs, pertaining to modular phases, are identified by developing KPI matrices through literature review from the perspective of modular manufacturers and general contractors. Data collected from a residential modular project constructed in Oslo, Norway. Causal loop and stock flow diagrams of productivity in MC are developed. The proposed model offers modular manufacturers and general contractors a flexible method for simulation of construction productivity in MC with the capability of finding causes of depicted variances. The core contribution of this research to MC literature is a developed dynamic productivity model which (1) integrates all modular phases for improving onsite construction productivity and (2) predicts onsite construction productivity by accounting for interdependent KPIs.