ANALISIS PRODUKTIVITAS DAN BIAYA REALISASI PADA PENGANGKATAN RANGKA ATAP BAJA DENGAN PENGGUNAAN MOBILE CRANE DAN TAKEL KATROL (STUDI KASUS PROYEK PEMBANGUNAN GEDUNG SARANA DAN PRASARANA KANTOR IMIGRASI KELAS II TPI SINGARAJA BALI)

Abstract

In the lifting of the heavy steel roof truss in the Construction Project of the Class II Immigration Office Facilities and Infrastructure Building, TPI Singaraja uses two methods, namely the mechanical method and the manual method. The tools used in the work are the P&H Tadano 45T Mobile Crane in the mechanical method and the pulley takel in the manual method. The use of these two methods is due to the inadequate access space in the project, the mobile crane cannot enter and work in the back area of the project so that in the back area work a pulley takel is used. From the research and data processing, the average productivity of Mobile cranes during 5 days of observation was 2,777.50 kg/hour. The highest productivity on the second observation day was 5,303.53 kg/hour, while the lowest productivity on the fifth observation day was 944.62 kg/hour. From the recapitulation of the calculation of the time effectiveness of the Mobile crane, the average effectiveness during observation or for 5 days, is 16%. The cost of a mobile crane per hour is Rp 1,477,150.00 /hour and the total cost of realizing a mobile crane for 5.51 hours is Rp 8,140,000.00. The average productivity of Takel pulleys during the 5 days of observation was 1,363.56 kg/hour. The highest productivity on the second observation day was 1,602.48 kg/hour, while the lowest productivity on the third and fifth observation days was 1,089.10 kg/hour. From the recapitulation of the calculation of the effectiveness of the pulley takel time, the average effectiveness during observation or for 5 days, which is 7%. The cost of a pulley takel per hour is Rp 537,200.00 /hour and the total cost of realizing a pulley takel for 2.71 hours is Rp 1,477,300.00.