Mathematical analysis and experimental testing of floating building platform prototypes made from expanded polystyrene system (Styrofoam) and lightweight concrete

Abstract

Floating building is one of the solutions to anticipate residential areas against Tidal floods which have been occurring on the North Coast of Central Java. This floating building can adjust its buoyancy to the effect of rising sea level and land subsidence. This building can be applied in sea tidal flood areas and retention ponds in polder systems. The main materials used as the floating building platform are styrofoam and lightweight concrete. This study aims to determine the stability, capacity and buoyancy of the prototype platform using styrofoam and lightweight concrete. This study uses mathematical analysis methods and prototype testing with laboratory experiments. Based on the analysis result for the styrofoam material platform with dimensions of 2 × 2 × 0.62 m, a buoyancy force of 2.73 tons was obtained with the Safety Factor (SF) of 1.25. A lightweight concrete weight of 0.97 tons, the load that can be supported by the prototype is 1.2 tons. The prototype of the styrofoam material platform with a lightweight concrete cover has a stable condition with a value of m>0, namely the center of object weight (B0) is +0.74 meters and the metacentric value is +0.9 meters.

Floating House Platform Stability Test with a Lightweight Concrete Cover Made of Expanded Polystyrene System (EPS)

“…The results of the research show a higher level of platform stability than previous research. [5], [11],…”

“…Handayani [5] stated that Styrofoam is a material that has a low density so it floats easily in water. The foundation/platform is a substructure that supports entire load of building above it [6].…”

“…A solid foundation with high stability and buoyancy is needed in making a floating house. A lightweight concrete cover on a styrofoam floating house platform will improve its aesthetics, particularly its strength, comfort, and cleanliness [5]. The foundation of floating house must meet the requirements for buoyancy, stability and metacentrum height.…”

Inovasi Pasar Apung sebagai Adaptasi terhadap Banjir Air Pasang Laut di Desa Randusanga, Brebes

“…4.2.156-162 Indonesian Journal of Community Services || 157 PENDAHULUAN Kawasan pesisir yang selama ini dianggap sebagai kawasan basis perekonomian, akhir-akhir ini menghadapi berbagai masalah (Ham et al, 2015). Bertambahnya garis pantai yang semakin bergeser ke arah daratan mengakibatkan gelombang pasang air laut akan naik ke daratan dan menyebabkan banjir pasang laut (rob) (Handayani et al, 2021). Banjir rob di kawasan pesisir akan semakin parah dengan adanya genangan air hujan atau banjir kiriman, dan banjir lokal akibat saluran drainase yang kurang terawat (Wahyudi et al, 2021).…”