ANALISIS EFEKTIFITAS TOWER CRANE PADA PEKERJAAN NON STRUKTUR DIBANGUNAN GEDUNG MAL PELAYANAN PUBLIK GIANYAR

Abstract

Recently, construction has been growing rapidly and causing problems for contractor workers because the buildings being built cannot be reached by human power with the planned schedule. Therefore, heavy equipment such as tower cranes are needed to help construction work efficiently. In the Gianyar Bali Public Service Mall Development Project, tower cranes are used to transport materials for finishing work on a 4-story building. In this study, an analysis of the productivity and
cost of using a tower crane was carried out using a quantitative descriptive method. The data on the weight of the load transported on the tower crane varied greatly, with an average material lifting volume of 2,988.17 kg. The cycle time and productivity of the tower crane also varied, with an average cycle time of 0.31 hours and an average productivity of 9,362 kg/hour. The effectiveness of the tower crane time during the 7 days of observation was calculated at 4%, indicating a level of
ineffectiveness. The cost of the tower crane per hour was Rp. 569.533,38, with a total cost for the 7 days of observation of Rp. 31.893.869. The cost efficiency of the tower crane during the 7 days of observation was 96%, indicating a level of inefficiency. Thus, planning the selection of tower cranes must be done carefully to achieve optimal effectiveness and efficiency in construction implementation.