

The results of this study have shown that the value of the standard time for the installation of columns, beams and plates is 13.63163 minutes 8.505156 minutes 8.465704 minutes.

Whereas the standard time value can be from basic time coupled with relaxation allowance and contingences. Basic recording time is using a stopwatch. This study utilizes the basic time data by consider relaxation allowance and contingences for the purpose to eliminate subjectivity in assessing both.

In addition, this study also aims to determine the cost of erection of a single structural element. This study aimed to compare the time between installation plan (time schedule) and the actual installation time also to know the time clean installation of structural elements. Precast concrete systems is still quite rarely used in Yogyakarta so that this is makes the researchers reviewed the project to study the case. Chosen plant project Rusunawa TNI AU Lanud Adi Sutjipto Yogyakarta because this project uses a system of precast concrete in construction. Work study can be applied in many cases, one of which is the construction of Rusunawa TNI AU Lanud Adi Sutjipto Yogyakarta. Work study method is one of the management approach that use for study about the productivity of workers.
