Integrating Smart Decision Tools with 5D BIM for Risk Management in Building Construction Projects in Sri Lanka

Sri Lankan construction industry continues to face persistent cost overruns, largely caused by project delays, design changes, and volatile material prices. Conventional quantity surveying practices tend to be reactive, lacking the proactive alert systems required to identify and mitigate risks early. This research aims to bridge that gap by developing a framework that integrates Smart Decision Tools with 5D Building Information Modeling (BIM) to strengthen risk management in Sri Lankan building projects. The main objective is to design and validate a CostX based workflow equipped with an alert mechanism for proactive cost control. The study’s methodology includes creating a 5D cost model using CostX, connecting it to key risk variables, and implementing a customized workbook alert system to facilitate scenario-based risk analysis. The proposed approach transforms cost management from reactive reporting to real-time risk prediction, offering a practical digital solution to reduce recurring cost overruns. This research also contributes to the advancement of applied 5D BIM knowledge and provides quantity surveyors with an effective tool to support digital transformation in cost management practices.