Analisis Pengaruh Percepatan Waktu Penyelesaian dengan Penambahan Jam Kerja Efektif terhadap Distribusi Kebutuhan Material, Biaya Proyek, dan Keuntungan

PLEWANG, Frederikus Marianus (2025) Analisis Pengaruh Percepatan Waktu Penyelesaian dengan Penambahan Jam Kerja Efektif terhadap Distribusi Kebutuhan Material, Biaya Proyek, dan Keuntungan. Undergraduate thesis, Universitas Katolik Widya Mandira.

	Text ABSTRAK.pdf Download (977kB)
	Text BAB I.pdf Download (247kB)
	Text BAB II.pdf Restricted to Repository staff only Download (500kB)
	Text BAB III.pdf Restricted to Repository staff only Download (262kB)
	Text BAB IV.pdf Restricted to Repository staff only Download (1MB)
	Text BAB V.pdf Download (145kB)
	Text DAFTAR PUSTAKA.pdf Download (416kB)

Abstract

Delays in the completion of construction projects are among the primary issues encountered during project execution. These delays impact the distribution volume of daily material needs, project costs, and overall profitability. One commonly adopted strategy by contractors to mitigate such delays is to accelerate project completion by increasing the number of effective working hours. This study aims to comprehensively analyze the effects of project time acceleration through extended working hours on the volume of daily material distribution, changes in project costs, and variations in profit margins. The acceleration of project completion time is carried out by adding effective working hours to activities located on the critical path of the network diagram, specifically those with a duration of more than one day. The identification and determination of the critical path and project duration are conducted using the Critical Path Method (CPM). The acceleration is applied in varying increments by adding 1 hour, 2 hours, and 3 hours per day to the critical path activities. The research findings indicate that the completion time of the Road Improvement Project on the SDI Waikomo II – Lerek section, which was initially scheduled for 194 days, was accelerated to 173 days with the addition of 1 hour, 157 days with the addition of 2 hours, and 147 days with the addition of 3 hours. Although the total volume of work remains unchanged, this acceleration results in an increased rate of daily material distribution. For instance, the selected fill work totaling 3,307.50 m3 was initially scheduled over 36 days, requiring 111.11 m3/day. With accelerated completion, the same task is executed in 32 days at 126.98 m3/day (1-hour addition), 28 days at 142.86 m3/day (2-hour addition), and 26 days at 158.73 m3/day (3-hour addition). In addition to the increased daily material requirements, the acceleration strategy also leads to higher project costs due to the additional labor expenses from overtime wages. The initial project cost of IDR 14,187,434,892.33 increases to IDR 14,204,257,849.85 for the 1-hour addition (an increase of 0.12%), IDR 14,232,196,362.88 for the 2-hour addition (0.32% increase), and IDR 14,255,338,461.28 for the 3-hour addition (0.48% increase). This cost escalation directly reduces the contractor’s profit. The initial profit of IDR 1,655,675,722.95 decreases to IDR 1,638,852,765.43 for the 1-hour addition (a decrease of 1.02%), IDR 1,610,914,252.41 for the 2-hour addition (2.70% decrease), and IDR 1,587,772,154.01 for the 3-hour addition (4.10% decrease). This reduction occurs because the total project revenue remains fixed according to the contract value, while the project costs rise due to the extended working hours. Keywords: project acceleration, effective working hours, material distribution, project cost, project profit

Actions (login required)

View Item