Abstract
Based on the initial plan from the contract of the Rehabilitation Klambu Kiri’s Project, main channel's work was carried out continously by an open and closed system using the kistdam method. However by the time of execution work, the stakeholders wanted the work in the main channel to be carried out based on cropping pattern, where there a drying period and a drainage period. In this case, flow area and bottom structure of the channel can only be worked during the drying period lasting three months. To be able to determine the impact of these change, a duration calculation is carried out from project's data which are internal's BQ, initial plan's resources, and the relations between activities using Microsoft Project on the flow section structure which be worked in drying period of 2017. The normal duration obtained from analysis is 203 days. It was exceeded time of drying period and possibly could have an impact on the overall project completion schedule resulting in delays, defaults and even termination of contracts. Therefore, it is necessary to have an accelerate strategy of the work on the flow section structure to be completed within a predetermined time. In this study, the acceleration strategy was carried out using crashing analysis in the critical activities from normal duration using Microsoft Project. The crashing method was carried out in stages from the crashing simulation of 30 days, 60 days, to 120 days so that obtained the duration of acceleration was 83 days. The cost component of acceleration is calculated by choosing the lowest cost from the alternatives of increasing work hours (overtime) or by adding resources. From the simulation results, the crash cost to complete the acceleration work is Rp. 1.298.307.591,- or about 2,05% of direct cost, so the efficiency is Rp. 9.692.409,- from normal duration
Highlights
Proyek Rehabilitasi Saluran Induk dan Sekunder Klambu Kiri merupakan program multiyears yang diselenggarakan oleh pemerintah pada tahun 2015 s.d tahun 2018
the stakeholders wanted the work in the main channel to be carried out based on cropping pattern
bottom structure of the channel can only be worked during the drying period lasting
Summary
Adapun jumlah tenaga kerja mandor terdiri dari beberapa grup sesuai dengan spesifikasi keahlian masingmasing tenaga kerja di antaranya adalah: 1. Grup pekerjaan galian, terdiri dari 11 tukang galian. Adapun jumlah tenaga kerja mandor terdiri dari beberapa grup sesuai dengan spesifikasi keahlian masingmasing tenaga kerja di antaranya adalah: 1. 2. Grup pekerjaan pembesian, terdiri dari 18 tukang besi dan 36 pekerja 3. Terdiri dari 12 tukang kayu dan 24 pekerja 4. Terdiri dari 8 tukang pengecoran dan 16 pekerja Jumlah keseluruhan tenaga kerja masing-masing mandor adalah 125 orang sehingga jumlah total tenaga kerja untuk 3 mandor adalah 375 orang. Selain grup tenaga kerja di bawah mandor, terdapat grup tenaga kerja untuk peralatan yang terdiri dari operator, pembantu operator dan pekerja (apabila diperlukan). Hal ini sesuai dengan kontrak pekerjaan yang menyatakan bahwa durasi pekerjaan berdasarkan hari kalender, sehingga pada pekerjaan ini dipastikan setiap hari terdapat progress pekerjaan. Pekerjaan persiapan sebelum pengeringan tidak diperhitungkan dengan asumsi telah diselesaikan sebelum periode pengeringan
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