TY  - CONF
TI  - Evaluation of delays using BIM 4D in projects implementing Last Planner System (case study: project x)
C1  - Singapore, Singapore
C3  - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)
SP  - 272
EP  - 282
PY  - 2026
DO  - 10.24928/2026/0286
AU  - Hantoro, Kevin Christianto
AU  - Susanto, Tan Vincent Genova
AU  - Hermawan, -
AU  - Hasiholan, Budi
AU  - Aminullah, -
AD  - Student of Civil Engineering Study Program, Faculty of Engineering, Soegijapranata Catholic University,  Semarang, Indonesia, 21b10007@student.unika.ac.id , https://orcid.org/0009-0000-5034-2226 
AD  -  Student of Civil Engineering Study Program, Faculty of Engineering, Soegijapranata Catholic University,  Semarang, Indonesia, 21b10012@student.unika.ac.id , https://orcid.org/0009-0003-0565-1179
AD  - Lecturer of Civil Engineering Study Program, Faculty of Engineering, Soegijapranata Catholic University,  Semarang, Indonesia, hermawan.mrk@unika.ac.id, orcid.org/0000-0002-7405-4736  
AD  - Lecturer of Civil Engineering Study Program, Faculty of Civil and Environmental Engineering, Bandung Institute  of Technology, Bandung, Indonesia, dtt.budihasiholan@unika.ac.id, orcid.org/0009-0004-0565-254X  aminullaht1975@gmail.com, orcid.org/0009-0008-1031-1570   
AD  - Lean Construction Manager/Strategic Project management - Transformation & IT Division - PT. Wijaya Karya,  Tbk (Persero) - Jakarta - Indonesia, 
ED  - Hamzeh, Farook
ED  - Poshdar, Mani
ED  - Garcia-Lopez,, Nelly P.
AB  - The Indonesian construction sector is a vital economic driver but suffers from frequent setbacks, with approximately 38% of projects experiencing delays. Traditional scheduling methods, such as CPM and PERT, often lack the flexibility and collaborative potential required for dynamic modern projects. Consequently, this study evaluates the Last Planner System (LPS) integrated with 4D Building Information Modeling (BIM) to anticipate delays and implement the Lean Construction mechanism. Focusing on "Project X" in Semarang, the research utilized quantitative data, including S-Curves and weekly work plans alongside 4D simulations created with Microsoft Project and Autodesk Navisworks. Performance was measured using Percent Plan Complete (PPC) to track the consistency between planned and realized work. The results were significant: integrating LPS with 4D BIM achieved a 100% PPC and saved 15 working days compared to using LPS alone. This demonstrates that combining collaborative planning with advanced visualization effectively enhances productivity. Future research is suggested to expand this interoperability to include cost-benefit analysis (BIM 5D).
KW  - Last Planner® System
KW  - BIM
KW  - lean construction
KW  - delay
KW  - percent plan complete.
PB  - 
T2  - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)
DA  - 2026/06/22
CY  - Singapore, Singapore
L1  - http://iglc.net/Papers/Details/2568/pdf
L2  - http://iglc.net/Papers/Details/2568
N1  - Export Date: 21 June 2026
DB  - IGLC.net
DP  - IGLC
LA  - English
ER  -