@thesis{thesis,
		author={Hastanto  Hastanto and RIYANI  FITRI},
		title ={EFISIENSI TOWER CRANE TERHADAP WAKTU DAN BIAYA PELAKSANAAN STRUKTUR PADA PROYEK GEDUNG SOCIAL SECURITY TOWER, KUNINGAN, JAKARTA SELATAN},
		year={2018},
		url={http://156.67.221.169/239/},
		abstract={The success of a project can be measured by two things, namely the benefits and timeliness of completion of the project, both of which depend on careful planning of the methods of implementation, use and scheduling tool. On the implementation of construction work using heavy equipment needed proper planning in order to achieve a project with a cost and time efficient execution. By because it is large is an analysis of the use of heavy equipment to be used. On Social Security Tower building project, Kuningan, South Jakarta. Tower crane is ne of the equipment used and plays an important role in supporting the supply of material on the work structure at each floor of the building. To calculate the efficiency of the tower crane in terms of time and cost of implementation of the  structural calculation step is divided into two stages, namely the timing of implementation and cost calculations. In calculating the timing of the steps taken is to calculate and determine the total cycle time of observation for 7 days and then determines the sample conducted comparison of the  efficiency of observation time and planning. Whereas in determining the costs of implementation are taken into account is the cost of rent, the cost of mobilization and demobilization, the cost of supporting equipment and operating costs of tools,
From the observation tower crane materials transported during 7 working days as samples, obtained calculation of the cycle time of use tower crane in use for measuring the time and cost efficiency of use of tower cranes. Total travel time use of tower cranes obtained at 2145.9180 minute or equal to 35.765 hours. With the cost of which is Rp.45.306.000,00 which has a fee of Rp.25.632.000,00 difference of the value of cost is issued on the planning that is Rp.70.938.000,00. The result of the efficiency of the tower crane63.8666% greater than the percentage of planning that50.42%.}
		}