VERIFYING DAMAGED ROAD FAILURE CRITERION: A STUDY USING 30 EXPERTS
Abstract
In Indonesia,
the national roads (NRs) management is less than optimal. Therefore, the design
life time is sometimes not reached, which can raise a potential economic loss. The
cause of the NRs management which is less than optimal is suspected by both of an
unobjective and an un-accountable of road assessment.
One of the efforts to optimize road management is through strengthening of the road managerial system or
embedding of the total quality management (TQM) related to: benchmarking, root cause analysis and failure mode effect analysis (FMEA). Unfortunately, the application of TQM on NRs management faced some obstacles, which are the unlimited of heavily road damaged category, and the unclearness of road failure criterion. This research is aimed to verify the failure criterion on damaged road by interviewing experts. A number of questions related to a series of the damaged road failure criterion that identified by literature review were given to the experts. The expert’s judgements to the proposed failure criterion (FC) are remarked into two groups, which are agree and not agree. There are 5 FC of damaged road identified, which are: FC1, FC2, FC3, FC4 and FC5 which describe actual structural capacity lower than minimum acceptable level, road collapsed, road is very uncomfortably to use, road is unsafe, and the preservation treatment is very costly, respectively. A purposive sampling method is used to determine 30 respondents, which consists of 10 persons as agencies, 10 persons as contractors, and 10 persons as professionals. The responds were quantified using a nominal scale, “1” for agree, and “0” for not agree. The result showed a series of significant FC, there are FC1, FC2, and FC3, with significance as 0,028, 0,001 and 0,0687 respectively. Each of the significant value of FC1 or FC2 or FC3 describes a road failure probability at 97,2% (100%-2.8%) or 99,99% or 93,2%, respectively. While, the FC4 and FC5 are not significant to be used as a series of FC. By using nondescriptive Chi-square test, there are no significant differences of judgement on FC due to variation of professions namely agency, professional and contractor, therefore, the failure criteria obtained (FC1, FC2, and FC3) are valid to be used. This result is expected to be able to initiate creating a concept of damaged road characteristics as a part of failure construction on the future research.
One of the efforts to optimize road management is through strengthening of the road managerial system or
embedding of the total quality management (TQM) related to: benchmarking, root cause analysis and failure mode effect analysis (FMEA). Unfortunately, the application of TQM on NRs management faced some obstacles, which are the unlimited of heavily road damaged category, and the unclearness of road failure criterion. This research is aimed to verify the failure criterion on damaged road by interviewing experts. A number of questions related to a series of the damaged road failure criterion that identified by literature review were given to the experts. The expert’s judgements to the proposed failure criterion (FC) are remarked into two groups, which are agree and not agree. There are 5 FC of damaged road identified, which are: FC1, FC2, FC3, FC4 and FC5 which describe actual structural capacity lower than minimum acceptable level, road collapsed, road is very uncomfortably to use, road is unsafe, and the preservation treatment is very costly, respectively. A purposive sampling method is used to determine 30 respondents, which consists of 10 persons as agencies, 10 persons as contractors, and 10 persons as professionals. The responds were quantified using a nominal scale, “1” for agree, and “0” for not agree. The result showed a series of significant FC, there are FC1, FC2, and FC3, with significance as 0,028, 0,001 and 0,0687 respectively. Each of the significant value of FC1 or FC2 or FC3 describes a road failure probability at 97,2% (100%-2.8%) or 99,99% or 93,2%, respectively. While, the FC4 and FC5 are not significant to be used as a series of FC. By using nondescriptive Chi-square test, there are no significant differences of judgement on FC due to variation of professions namely agency, professional and contractor, therefore, the failure criteria obtained (FC1, FC2, and FC3) are valid to be used. This result is expected to be able to initiate creating a concept of damaged road characteristics as a part of failure construction on the future research.
Keywords:
optimal, damaged road, and failure criterion
...............................
Tidak ada komentar:
Posting Komentar