TY - CONF TI - Takt Planning and control in Indonesia: structure project twin tower Undip PTPP C1 - Singapore, Singapore C3 - Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34) SP - 1571 EP - 1582 PY - 2026 DO - 10.24928/2026/0158 AU - Aisyah, Rina Asri AU - Farida, Fifi AU - Gutomo, Ardhianto AU - Putra, Prama AU - Brata, Pundjung Setya AD - Lean Construction Section, Division of Strategic, Planning and Technology, PT PP (Persero) Tbk, Jakarta, Indonesia, aisyah_rina@ptpp.co.id, orcid.org/0009-0005-0637-9925 AD - Scheduler and Lean, Project Twin Tower Undip, PT PP (Persero) Tbk, Jakarta, Indonesia, fififarida@ptpp.co.id AD - Project Manager, Project Twin Tower Undip, PT PP (Persero) Tbk, Jakarta, Indonesia, ardhianto@ptpp.co.id AD - Assistant Professor, Center of Excellence in Predictive Risk and Simulation Modeling, Bandung Institute of Technology (ITB), Indonesia, prama.putra@itb.ac.id, orcid.org/0000-0003-4045-9628 AD - Monitoring Body of Indonesian Professional Society in Lean Construction Management (IAMKRI), Indonesia, pundjungsetyabrata@ptpp.co.id ED - Hamzeh, Farook ED - Poshdar, Mani ED - Garcia-Lopez,, Nelly P. AB - Takt planning and takt control are increasingly applied in lean construction to stabilize workflow and improve project performance. However, empirical evidence explaining how performance improvements emerge over time remains limited. This study investigates how schedule performance improvements develop in a takt-based production system through an empirical case of a twin-tower project executed, focusing specifically on structural works. The research questions are how takt planning contributes to initial schedule performance improvements and how deviations between planned and realized production during execution contribute to further performance improvement over time. The project represents the first implementation of takt planning and takt control by PT PP (Persero) Tbk. Using a case-study approach, the study distinguishes performance gains through takt planning and additional improvements during execution through takt control. Our results show that takt planning significantly reduced planned project duration and stabilized workflow. Further schedule gains shown through deviations between planned and realization enabled learning and localized corrective actions. By comparing performance outcomes at the whole project level and zone level, this study demonstrates that early performance losses reflected a learning and adaptation process. Meanwhile, repeated workflows and continuous control supported improved coordination, predictability, and faster delivery over time. It enables the systematic incorporation of lessons learned from the first tower into the second tower in the near future. KW - Lean implementation KW - project production KW - Takt time KW - Takt planning KW - Takt control. 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/2473/pdf L2 - http://iglc.net/Papers/Details/2473 N1 - Export Date: 19 June 2026 DB - IGLC.net DP - IGLC LA - English ER -