Feasibility Study of Floating Market with Styrofoam Platform for Coastal Areas Affected by Tidal Floods

Coastal areas are areas that experience a lot of damage due to the impacts of climate change, such as storm surges, land subsidence, and rising sea levels. The impacts will disrupt population activities and damage organizations and infrastructure, including markets. The problem of damaged market buildings has hampered economic activities. Floating markets as an adaptation effort to tidal floods can be implemented in coastal areas. Floating markets are building constructions where the building is built in the air and floats; the buoyancy is obtained by using a floating foundation system/floating platform. There are various types of materials that can be used as floating building platform materials, such as bamboo, plastic drums, and Styrofoam. This study aims to design and analyze the economic feasibility of a floating market using a Styrofoam platform. The planned floating market is located in Randusanga Wetan Village, Brebes Regency. Floating market designed with a styrofoam platform that has high buoyancy, is lightweight, and is economical with a total area of 7,002.844 m 2 . The market area is designed to include five zones, where each zone has its own function. The feasibility analysis parameters include Net Present Value, Benefit Cost Ratio, and Internal Rate of Return. In the engineering economic analysis, a 15-year life plan is used with an interest rate of 8%. The total cost required is IDR 7,466,651,670 and total benefit is IDR 18,465,584,430. The calculation results show a Net Present Value of IDR 1,237,056,569, a Benefit Cost Ratio of 1.14, and an Internal Rate of Return of 11.14%. Based on these three parameters, the floating market development plan is feasible to implement.