Open AccessUnit cost analysis for road construction sustainability: A case study of national road in West Java Province, Indonesia
Author(s) -
Ridwan Anas,
Rudi Sugiono Suyono,
Medis Surbakti,
Ika Puji Hastuty
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1122/1/012008
Subject(s) - unit (ring theory) , cost estimate , unit cost , transport engineering , process (computing) , java , total cost , cost engineering , cost database , sustainability , cost analysis , engineering , operations management , computer science , business , operations research , systems engineering , mathematics , mechanical engineering , ecology , mathematics education , accounting , database , biology , programming language , operating system
Cost estimation of road construction is required at the early stages of a project used to describe the process of predicting a project’s cost before construction through the tender process. Unit cost for road construction has a different characteristic for each area, this is caused by the component that forms unit cost is different in each area, starting from the material, equipment to human resources. The unit cost of road construction is affected by several factors, such as project location, whereas the distance to the project location can affect the transportation cost of equipment and material, other than that there is an external cost for each road project. This study describes the variants of unit cost between the estimated cost and actual (contractual) cost, based on collected data for 62 awarded road construction projects during the last 3 years especially for major items of work in West Java Province. The result describes that cost under-estimates are more implemented than cost over-estimates in national road construction projects. The variances of unit cost can be used by the government as a reference for estimating the cost item because the high accuracy of unit cost is crucial for completing the road projects.