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Life cycle cost analysis for the selection of optimal renewal strategies in infrastructure
Abraham D.M., Wirahadikusumah R.b
a School of Civil Engineering, Purdue University, United States
b Department of Civil Engineering, Institut Teknologi Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Investment in civil infrastructure made by public agencies and the private sector involves a major portion of the wealth of many industrialized nations. Owners, designers and contractors have often approached the design, construction, maintenance and operation of underground infrastructure on a crisis-based approach. As a result, the impact of important considerations such as construction practices, construction duration, life-cycle costs, legal and environmental impacts, safety requirements, public policy issues, etc., are not fully explored. The development and use of life cycle cost analysis (LCCA) for public works investments can contribute to the goals of reducing construction, operation, and maintenance costs. When infrastructure system maintenance/rehabilitation options are viewed as investment alternatives, it is important to make decisions based on life cycle costs instead of relying totally on initial construction costs. The use of LCCA also facilitates the analysis of alternate approaches such as trenchless technologies and new materials for rehabilitation and new construction. This paper presents the findings of two research projects that were funded through grants from the National Science Foundation, U.S.A. It discusses the development of a framework for a life-cycle model for assisting in the prioritization of scheduling of maintenance and rehabilitation of underground infrastructure. Such a framework allows managers of wastewater systems to plan for maintenance and rehabilitation of these assets, so as to maximize the structural and hydraulic performance of the system, while minimizing repairs and claims cost as well as disruption and social impacts. Operations research and simulation techniques are used to obtain the appropriate rehabilitation method, based on available annual budget, benefit/cost ratio, weighting factors, etc. The interpretation, prediction and life-cycle costs models will assist asset managers in improved performance modeling of the wastewater infrastructure, and is a step towards preventive rather than reactive maintenance.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Industrialized nations,Life-cycle cost analysis,Maintenance and operation,Maintenance and rehabilitations,National Science Foundations,Trenchless technologies,Underground infrastructure,Wastewater infrastructure[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]