EVALUASI PENGGUNAAN ALAT BERAT EXCAVATOR PC78 PADA PEKERJAAN GALIAN GUTTER PROYEK PEMBANGUNAN GUDANG PABRIK PT. URBAN ASIA INDUSTRI DAN DAMPAKNYA TERHADAP PRODUKTIVITAS

Abstract

Development growth in Indonesia has increased every year. In large-scale development, the role
of heavy equipment is indispensable in the project's sustainability process. In the use of heavy equipment,
the calculation of the productivity of the heavy equipment used will affect the sustainability of the project.
If the productivity of the heavy equipment used is not in accordance with the scheduled time, then a reanalysis
is carried out on the tools used and compared with other tools that allow for better productivity, so
that the work done can be completed according to the planned time. From the calculation of productivity
and the specifications of the known tools, the cost to do a job using the selected tool can be calculated. The
tool in the project being reviewed is a Komatsu PC78 excavator which is operated as a digging tool for
drainage work while moving excavated material to other empty areas. The productivity of the Komatsu
PC78 excavator based on field observations is 29.27 m3/hour LM for excavation work and 30.26 m3/hour
LM for loader work. If the tool is calculated analytically, the productivity is 71.20 m3/hour LM for
excavation work and 56.96 m3/hour LM for loading work. The productivity of the Komatsu PC78 excavator
based on the results of field observations is 29.27 m3/hour LM for excavation work and 30.26 m3/hour LM
for loader work. If the tool is replaced using a Komatsu PC100 excavator, the productivity of the tool will
increase to 94.93 m3/hour LM for excavation work and 75.94 m3/hour LM for loader work. Komatsu
PC78's HSP for excavation work is worth Rp.12,508.00/m3, and for loader work, it is worth
Rp.5,142.16/m3, while the HSP of Komatsu PC100 excavator is Rp.4,722,90/m3 for excavation work and
Rp.5,133 .59/ m3 for loader work