Perhitungan Kuantitas Pengecoran Dengan Concrete Pump Dan Truck Mixer Pada Pekerjaan Pondasi Raft Gedung Tsunami Shelter Kuta

Abstract

The more development of construction projects, the more developed the use of construction equipment technology. Indonesia as a developing country clearly needs heavy equipment, to help ease the heavy work that cannot be done by humans, one of the heavy equipment used is a concrete pump for casting raft foundations in the construction project of the Kuta Tsunami Shelter Building. The concrete used is ready mix concrete produced by PT. Adi Jaya. Previously, in this project, there were existing buildings and a waiting area for mixer trucks, which had limited space to unload cargo to the concrete pump so that the casting process on the raft foundation was slightly hampered. Based on this, the purpose of this study was to determine the quantity of casting with a concrete pump and mixer truck for the raft foundation casting work on the Kuta Tsunami Shelter Building development project in accordance with the real conditions in the field. The analytical method is carried out by direct calculation for the cycle time of each concrete pump truck and mixer truck activity, then calculating the casting quantity with a concrete pump truck and mixer truck. Based on the research conducted, the calculation of the quantity of concrete pump truck casting was obtained which was affected by the delay time of 0.624 m3/minute. The quantity of concrete pump trucks that are not affected by delay time is 0.881 m3/minute. This quantity calculation is determined by the cycle time, field conditions, work methods and work volume. The duration needed to complete the raft foundation casting work with a volume of 336 m3 affected by the delay time is 8 hours 58 minutes 12 seconds. The duration needed to complete the raft foundation casting work, not affected by the delay time, is 6 hours 21 minutes.