Analysis of The Acceleration of Time and Cost of Construction Projects by Adding Labor and Working Hours (Overtime) using The Time Cost Trade Off Method (Case study: Construction of The Conexio Apartment Project)

Authors

  • Hamonangan Girsang Faculty of Engineering, University Mercu Buana Jakarta, Indonesia
  • M. Andi Wahyud Faculty of Engineering, University Mercu Buana Jakarta, Indonesia

Keywords:

Crash Cost, Crash Duration, Project Acceleration, Time Cost Trade Off

Abstract

Systematic project management is needed to ensure the project implementation time is in accordance with the contract or even faster, so the cost incurred can provide benefits and also avoid the existence of fines due to delays in project completion. This study discusses the acceleration of time and cost project in the implementation of high rise building construction projects using the Time Cost Trade Off method. The author will analyze the scenario of accelerating the completion of the project by comparing the addition of working hours by 4 hours (scenario 1) and additional labor (scenario 2). The results of the analysis found the estimated time to accelerate the implementation of the project is from the normal duration of 600 calendar days, after a crash duration there is an acceleration of time to 582 calendar days. With a time efficiency of 18 days / 3.00%. The total cost due to acceleration of time (including indirect cost) for the addition of overtime hours for 4 hours (scenario 1) obtained a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 70,224,661,008 (excl. VAT) with an over cost of IDR 3,586,914,289 / 5.38%. Whereas with the addition of labor (scenario 2) a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 71,454,128,134 (excl. VAT) with an over cost of IDR 4,816,381,415 / 7.23%.

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Author Biography

Hamonangan Girsang, Faculty of Engineering, University Mercu Buana Jakarta, Indonesia

Systematic project management is needed to ensure the project implementation time is in accordance with the contract or even faster, so the cost incurred can provide benefits and also avoid the existence of fines due to delays in project completion. This study discusses the acceleration of time and cost project in the implementation of high rise building construction projects using the Time Cost Trade Off method. The author will analyze the scenario of accelerating the completion of the project by comparing the addition of working hours by 4 hours (scenario 1) and additional labor (scenario 2). The results of the analysis found the estimated time to accelerate the implementation of the project is from the normal duration of 600 calendar days, after a crash duration there is an acceleration of time to 582 calendar days. With a time efficiency of 18 days / 3.00%. The total cost due to acceleration of time (including indirect cost) for the addition of overtime hours for 4 hours (scenario 1) obtained a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 70,224,661,008 (excl. VAT) with an over cost of IDR 3,586,914,289 / 5.38%. Whereas with the addition of labor (scenario 2) a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 71,454,128,134 (excl. VAT) with an over cost of IDR 4,816,381,415 / 7.23%

References

ardika o p. (2014). Analisis Time Cost Trade Off dengan Penambahan Jam Kerja pada Proyek Konstruksi: Studi Kasus Proyek Pembangunan Jalan Tol Bogor Ring Road Seksi II-A. universitas sebelas maret.

Ervianto, I. (2004). Teori Aplikasi Manajemen Proyek Konstruksi. Penerbit CV. Andi Offset.

Frederika, A. (2010). Analisis Percepatan Pelaksanaan dengan Menambah Jam Kerja Optimum pada Proyek Konstruksi. universitas udayana.

Priyo, M., Sumanto, A. (2016). Analisis Percepatan Waktu Dan Biaya Proyek Konstruksi. universitas muhammadiyah.

soeharto. (1999). Manajemen Proyek dari Konseptual Sampai Operasional (Edisi 2). Erlangga.

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Published

2021-05-10

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Articles