MANAGEMENT OF ACCELERATION TIME BY USING TIME COST TRADE OFF METHOD ON CONSTRUCTION PROJECT OF INTEGRATED OFFICE OF SAMARINDA

Time and cost analyzes were conducted in this research; which were required in the application of Time Cost Trade Off (TCTO) in finishing construction project of Samarinda Integrated Office. In order to realize the picture of the acceleration, it began with the creation of Critical Path Method (CPM) network to know the existence of critical path. Moreover, the application of TCTO method was conducted to find the cost slope value from each of these critical activities. In order to realize the acceleration, the compression on critical work items was conducted starting from the lowest cost slope value. The result of this research produces two alternatives. Alternative I obtained the overtime over one activity from 1 hour to 4 hours, the time and cost were found in the 2-hour-overtime alternative to ACP plank list job, it obtained the time for 408 days from the normal amount for 410 days. Meanwhile, for the cost, it obtained IDR 41.356.071.000,00 from the total normal cost of IDR 40.623.401.000,00 or there was additional cost of IDR 732.670.000,00. Whereas in alternative II, it was obtained overtime of some activities from 1 hour to 4 hours overtime, time and cost were obtained in 1-hour overtime on ground foundation work, the ground work of the sand under the foundation, ACP plank list, window door, and dry hand, with 398 days and a fee of IDR 41.440.678.000,00 (there was additional fee of IDR 817.277.000,00)