Cost and Time Analysis of the Construction of the 275 Kv 2cct Quadruple Zebra Sutet Project Gumawang – Gitet Lampung 1 Using the Time Cost Trade Off Method

Abstract

Indonesia as an archipelago state is still need an equality development with the intention in achieving the goals to fulfil the requirement of structure and infrastructure. The economy that has experiencing growth, it can be see with the rising of the demand for supply of electricity power whether it is coming from domestic moreover from industrial usages. Lampung Province, as one of the regions which in a continuation to develop, requires the support of electric power, which at its peak load reaches 1200 MW, while the capacity of existing power plant can only produce 700 MW, therefore the construction of a 275 kV Gumawang-Lampung 1 SUTET interconnection network with a capacity of up to 2000 MW was established to meet these requirement.Based on the time schedule which noted that the duration of foundation work started with the excavation, concreting until the reaches of it’s curing time in 28 days is 42 days in 2023 December 13th is on try to speed up can be curing in 2023 December 8th, so the schedule tower installation in 2023 December 9th will be on time. Due to this delay, the researcher intends to carry out an acceleration analysis starting with preparing a network diagram using the Microsoft Project software, followed by the crashing process by adding groups of workers and tools of any activities on the critical path. The next step is to calculate the crash cost and cost slope values ??using the time cost trade off (TCTO) method.From the results of the analysis carried out, it was found that the normal project duration was 42 days after the crashing process was carried out to 36 days, with a normal work cost of Rp. 1,774,462,352.84 and after the crashing process was carried out with the alternative of adding labor groups and equipment the cost became Rp. 1,849,762,666.92. It was concluded that with the time cost trade off method there was a reduction in duration and an increase in costs.