VOLUME
AGGREGAT PONDASI JALAN BERDASARKAN
VARIASI DAN KESALAHAN
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 (Trad_Meth) and to promote variation acceptance and error method (VE_Meth) 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 Trad_Meth and VE_Meth. 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 Trad_Meth calculation is 386.01m 3and the volume based on VE_Meth 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 Trad_Meth cannot distinguish clearly whether the work is within the limits of acceptance or rejection, while on the other hand VE_Meth can describe in detail parts of the work to be accepted or rejected. Using this VE_Meth calculation, an assessment of a construction workis expected to be more objective and detailed.
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 (Trad_Meth) and to promote variation acceptance and error method (VE_Meth) 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 Trad_Meth and VE_Meth. 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 Trad_Meth calculation is 386.01m 3and the volume based on VE_Meth 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 Trad_Meth cannot distinguish clearly whether the work is within the limits of acceptance or rejection, while on the other hand VE_Meth can describe in detail parts of the work to be accepted or rejected. Using this VE_Meth calculation, an assessment of a construction workis expected to be more objective and detailed.
Keywords:acceptable
variations,
errors and methods of calculation.
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