Lagos, Nigeria is a city of rapidly shifting conditions and perpetual crises with issues of over population, pollution, limited circulation, waste management, density, poverty, and social disparity. These conditions have resulted in the proliferation of slum settlements along the coastal edges of the megacity. However, the radical conditions of Lagos promote new solutions for the city. Waste provides the mass for coastal expansion, and defense from sea-rise. Expansion of the coastline provides new territories for the growth of slums. Geometry can maximize efficiency and minimize contamination. P.L.A.T.F.O.R.M., makes use of the processes associated with Lagos waste management and the expansion of the slums, while mitigating the harmful effects of contamination and providing a defensive barrier against sea-level rise.