METODE PENENTUAN VOLUME AGGREGAT PONDASI JALAN BERDASARKAN VARIASI DAN KESALAHAN: STUDI KASUS

Abstract

Variations between plans and reality can hardly be avoided in construction projects. These variations may be
accepted when they are still in the acceptance limits, or rejected when they are beyond the acceptance limits.
The former is called variation in acceptance and the later is called error. Distinguishing these two in a
completed construction work is very important, as rejected variations (errors) may be considered as breaching a
contract, thus may have legal implications. The research aims to evaluate the traditional calculation method
(MeTrad) and to promote variation acceptance and error approach (MeVE) that is able to draw a clear line
whether a particular work to be accepted and rejected. The research was conducted by comparing the results of
calculation of the aggregate volume between MeTrad and MeVE. The data was collected from Mauponggo-
Puuwada road project in Nangakeo in 2010. The results show that there was no difference in the volumes
calculated using both methods. The volume of Class B aggregate based on MeTrad calculation is 386.01m 3and
the volume based on MeVE is 386.01m3; where 16.67m3 of which (3.34% of the planned volume) is in the range
of acceptance and 369.34m3 of which (73.94% of the planned volume)is the volume that is rejected (error). The
results suggest that MeTrad cannot distinguish clearly whether the work is within the limits of acceptance or
rejection, while on the other hand MeVE can describe in detail parts of the work to be accepted or rejected.
Using this MeVE calculation, an assessment of a construction workis expected to be more objective and
detailed.