Optimasi Waktu dan Biaya Proyek Gelanggang Olahraga Kalimantan Selatan dengan Metode Time Cost Trade-Off

Endah Widiastuti; Maesa Fitri Sugiarti; Candra  Yuliana; Abdul Karim

doi:10.30737/jurmateks.v8i1.6597

Authors

Endah Widiastuti Universitas Lambung Mangkurat
Maesa Fitri Sugiarti Universitas Lambung Mangkurat
Candra Yuliana Universitas Lambung Mangkurat
Abdul Karim Universitas Lambung Mangkurat

DOI:

https://doi.org/10.30737/jurmateks.v8i1.6597

Keywords:

Cost Slope, Critical Path, Crashing, Overtime, Time Cost Trade Off (TCTO)

Abstract

Construction projects often face delays and cost overruns due to material delays, labor shortages, and adverse weather. In the Sports Building project in South Kalimantan, a 17-day delay beyond the planned 270-day schedule increased costs, risk of penalties, and threatened the contractor’s reputation and project sustainability. Therefore, accelerating completion is essential to reduce losses. Overtime on critical path activities is a common acceleration method but requires careful analysis since excessive overtime can reduce productivity and raise costs. This study aims to analyze alternatives for accelerating the duration of the construction of a sports arena in South Kalimantan using the Time Cost Trade-Off (TCTO) method. TCT) method is applied, focusing on adding 2, 3, and 4 hours of overtime per day on critical path tasks. The approach integrates actual project data, regulations, and productivity factors to develop effective acceleration strategies. Results show that adding 3 hours of overtime daily is the most efficient, reducing duration from 287 to 283 days and saving IDR 71,652,415.38. However, the 270-day target is not yet met, requiring further crashing. This paper presents only one crashing iteration as a practical simulation to demonstrate the method and potential outcomes. Future crashing will focus on tasks with the lowest cost slope while considering task dependencies.

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