Improving Construction Workflow- The Role of Production Planning and Control

摘要: The Last PlannerTM System (LPS) has been implemented on construction projects to increase work flow reliability, a precondition for project performance against productivity and progress targets. LPS encompasses four tiers of planning processes: master scheduling, phase lookahead planning, commitment / weekly planning. This research highlights deficiencies in the current implementation including poor which results linkage between plans schedule. undermines ability process select execution tasks that are critical success. As result, percent plan complete (PPC) becomes weak indicator progress.The purpose this is improve (the bridge scheduling), PPC, selection success by increasing link Should, Can, Will, Did (components LPS), thereby rendering PPC better employs case study method describe suggest guidelines application general particular. It then introduces an analytical simulation model analyze process. done examining impact two metrics: anticipated (TA) made ready (TMR). Finally, investigates importance functions: identification removal constraints, task breakdown, operations design.The findings confirm positive improving (i.e., TA TMR) PPC. also recognizes need perform differently three types involving different levels uncertainty: stable work, medium uncertainty highly emergent work. confirms rules practice specifically greater detail as time gets closer performing role production system incorporates deliberate (predetermined optimized) situated (flexible adaptive). presents recommendations improvements areas: related- (suggesting practice), technical- (highlighting issues with software programs advocating inclusion collaborative capability), organizational transitional steps when applying LPS).