Time and Cost Optimization of the Coordinating Ministry 4 Office Building Construction in Nusantara Using the Time-Cost Trade-Off Method

Daisy D. G. Pangemanan; Evi Aprianti; Fleren Abetsina Larwuy

doi:10.48084/etasr.11842

Authors

Daisy D. G. Pangemanan Building Construction, Civil Engineering Department, Manado State Polytechnic, Manado, Indonesia
Evi Aprianti Master of Disaster Management, The Graduate School of Hasanuddin University, Makassar, Indonesia
Fleren Abetsina Larwuy Building Construction, Civil Engineering Department, Manado State Polytechnic, Manado, Indonesia

Volume: 15 | Issue: 6 | Pages: 28622-28628 | December 2025 | https://doi.org/10.48084/etasr.11842

Received: 30 April 2025 | Revised: 29 July 2025 and 1 September 2025 | Accepted: 6 September 2025 | Online: 6 October 2025

Corresponding author: Daisy D. G. Pangemanan

Abstract

This research aims to analyze the acceleration of the construction project for the Coordinating Ministry 4 office building in the Nusantara capital city in terms of cost and time. Additionally, it examines the optimization of the final total cost and project completion time after acceleration. The Time Cost Trade Off (TCTO) method is used to evaluate an acceleration alternative that replaces the construction method with a more effective one. Specifically, the work method for the floor slab structural element is changed from conventional concrete to precast concrete (half-slab). The half-slab method is a type of precast concrete construction for floor slab structural elements. The analysis shows that using the half-slab method as an acceleration alternative was effective for constructing the office building of the Coordinating Ministry 4 in the Nusantara Capital City project, reducing the total work time from 392 days or 56 weeks to 363 days or 52 weeks. The cost also changed, with the normal cost increasing from Rp 29,874,122,004.42 to Rp 29,901,677,798.806, achieving an optimization value of Rp 29,718,483,194.103 and a total time acceleration of 29 days or 4 weeks. These results provide an important overview of the work optimization for improving the future construction management and can serve as a cost-efficiency and time management reference.

Keywords:

Time Cost Trade Off (TCTO) method, half-slab, optimization, time, cost

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References

T. Wang and H.-M. Chen, "Integration of building information modeling and project management in construction project life cycle," Automation in Construction, vol. 150, June 2023, Art. no. 104832. DOI: https://doi.org/10.1016/j.autcon.2023.104832

S. Rajabi, S. El-Sayegh, and L. Romdhane, "Identification and assessment of sustainability performance indicators for construction projects," Environmental and Sustainability Indicators, vol. 15, Sept. 2022, Art. no. 100193. DOI: https://doi.org/10.1016/j.indic.2022.100193

W. K. Emmanuel, "Project Control and Project Performance of Irrigation Projects in Embu County, Kenya," International Journal of Science and Research (IJSR), vol. 13, no. 4, pp. 1109–1118, Apr. 2024. DOI: https://doi.org/10.21275/SR24415114258

D. J. A. Fatkhurrahman, R. U. Latief, and S. Burhanuddin, "The Analysis of Delayed Duration Caused by Unpredictable Factors in Pammukkulu Dam," IOP Conference Series: Earth and Environmental Science, vol. 921, no. 1, p. 012083, Aug. 2021. DOI: https://doi.org/10.1088/1755-1315/921/1/012083

E. Aprianti, S. Hamzah, and M. A. Abdurrahman, "The Analysis of Cost Estimation using Cost Significant Model on Bridge Construction in South Sulawesi," IOP Conference Series: Earth and Environmental Science, vol. 921, no. 1, Dec. 2021. DOI: https://doi.org/10.1088/1755-1315/921/1/012073

M. A. Abdurrahman, R. U. Latief, R. Arifuddin, S. Hamzah, E. Aprianti, and G. F. Nurqalbi, "Risk of factors causing delays in road construction projects (Case study on road project in South Sulawesi province, Indonesia)," AIP Conference Proceedings, vol. 2543, no. 1, Nov. 2022, Art. no. 030006. DOI: https://doi.org/10.1063/5.0095426

A. S. Patil, A. K. Agarwal, K. Sharma, and M. K. Trivedi, "Time-cost trade-off optimization model for retrofitting planning projects using MOGA," Asian Journal of Civil Engineering, vol. 25, no. 5, pp. 3823–3833, July 2024. DOI: https://doi.org/10.1007/s42107-024-01014-y

M. Rifai, Setiono, A. Tikano, A. N. binti Mazlan, and S. binti Mohd, "Cost and Time Optimization Analysis of the X Surakarta Market Revitalization Project Using the Time Cost Trade off Method Using Primavera P6," in Proceedings of the 6th International Conference on Rehabilitation and Maintenance in Civil Engineering—Volume 2, Singapore, 2025, pp. 443–453, https://doi.org/10.1007/978-981-96-4694-4_45. DOI: https://doi.org/10.1007/978-981-96-4694-4_45

J. J. Posillico, D. J. Edwards, C. Roberts, and M. Shelbourn, "A conceptual construction management curriculum model grounded in scientometric analysis," Engineering, Construction and Architectural Management, vol. 30, no. 9, pp. 4143–4170, June 2022. DOI: https://doi.org/10.1108/ECAM-10-2021-0899

A. Kanchanadevi, K. Ramanjaneyulu, and P. Gandhi, "Static and fatigue performance of concrete composite half-slab system with continuous and discrete truss type shear connectors," Structures, vol. 75, May 2025, Art. no. 108709. DOI: https://doi.org/10.1016/j.istruc.2025.108709

M. Biswas, P. M. A. Rahman, S. M. Chayan, P. M. S. Raihan, and A. M. Shahjahan, "Design of a Six-Story Teaching Building: A Comprehensive Approach to Safety and Structural Efficiency," European Journal of Theoretical and Applied Sciences, vol. 2, no. 5, pp. 593–619, Sept. 2024. DOI: https://doi.org/10.59324/ejtas.2024.2(5).57

B. S. Raja, A. K. S. Gowda, A. K. Choudhury, S. Paul, and R. B. Kalia, "Barbed Sutures for Total Hip and Knee Arthroplasty Have Shorter Wound Closure Time and are Cost-Effective in Comparison to Traditional Sutures: A Systematic Review and Meta-analysis of 16 Randomized Controlled Trials," Indian Journal of Orthopaedics, vol. 56, no. 7, pp. 1156–1173, July 2022. DOI: https://doi.org/10.1007/s43465-022-00638-z

T. Sumarningsih, M. A. Wibowo, and S. P. R. Wardani, "Ergonomics in Work Method to Improve Construction Labor Productivity," International Journal of Science and Engineering, vol. 10, no. 1, pp. 30–34, Jan. 2016.

S. S. Murari and A. M. Joshi, "Precast Construction Methodology in Construction Industry." Social Science Research Network, Rochester, NY, July 03, 2017. DOI: https://doi.org/10.2139/ssrn.3496019

G. Blak Bernat, E. L. Qualharini, M. S. Castro, A. B. Barcaui, and R. R. Soares, "Sustainability in Project Management and Project Success with Virtual Teams: A Quantitative Analysis Considering Stakeholder Engagement and Knowledge Management," Sustainability, vol. 15, no. 12, Jan. 2023, Art. no. 9834. DOI: https://doi.org/10.3390/su15129834

L. S. Tavassoli, N. Sakhavand, and S. S. Fazeli, "Integrated Preventive Maintenance Scheduling Model with Redundancy for Cutting Tools on a Single Machine," Engineering, Technology & Applied Science Research, vol. 10, no. 6, pp. 6542–6548, Dec. 2020. DOI: https://doi.org/10.48084/etasr.3903

T. Jacobo-Estrada et al., "Evaluation of kidney injury biomarkers in rat amniotic fluid after gestational exposure to cadmium," Journal of applied toxicology: JAT, vol. 36, no. 9, pp. 1183–1193, Sept. 2016. DOI: https://doi.org/10.1002/jat.3286

M. Senthilvel, K. Varghese, and N. R. Babu, "Building Information Modeling for Precast Construction: A Review of Research and Practice," in Construction Research Congress 2016, San Juan, Puerto Rico, 2016. DOI: https://doi.org/10.1061/9780784479827.224

S. H. N. Alani and A. H. Mahmoud, "Factors Affecting the Cost Management of Iraqi Construction Firms," Engineering, Technology & Applied Science Research, vol. 13, no. 6, pp. 12001–12005, Dec. 2023. DOI: https://doi.org/10.48084/etasr.5212