Coping with Rapid Urbanization

Innovation Excellence | Coping with Rapid Urbanization


Coping with Rapid Urbanization
Formwork System
Every year, nearly seventy million people, or 200,000 a day, move from rural areas to urban cities. In South Africa alone, more than 2.2 million homes are currently needed, and an additional 180,000 homes will be needed every year to keep pace with rapid urbanization.
Utilizing a Plastic Formwork System, a method of building cast-in-place reinforced concrete structures, the walls of a house can be built in as little as a day by unskilled laborers with locally sourced materials and little waste. The system is comprised of square plastic components that join together to form wall panels from which the house is assembled. The house’s infrastructure – steel-reinforcement bars, conduits, window and door frames, pipes and other fittings – is positioned on the wall; once in place, these elements are sandwiched between a second layer of panels, forming a cavity into which a lightweight concrete mortar is poured. After the mortar dries overnight, the Plastic Formwork panels are removed and reassembled for use at the next housing site, minimizing waste and transportation needs.
Low Cost and Fast Construction
Formwork system
The plastic formwork kits can each be reused to cast fifty homes, after which the plastic is recycled into household consumer products such as toilet seats. The result is a house that can both withstand natural disasters and provide thermal insulation and moisture resistance. Moreover, it leads to local job creation without compromising quality or integrity.
Moladi, a South African company, was recently invited to show its concept at the Smithsonian Cooper-Hewitt National Design Museum’s exhibition Design for the Other 90%: CITIES.
This exhibition, sponsored by the Rockefeller Foundation, is taking place at the United Nations in New York City from October 15, 2011 to January 9, 2012. More than 60 innovations from 22 countries will be on display.
Design for the Other 90%: CITIES will explore the challenges that are expected to arise from the unprecedented growth predicted in urban areas and informal settlements. It is said that the population of these settlements will double by 2030.
CITIES will explore ways to address the basic struggle to survive faced every day by 5.8 Billion people (90% of the world’s population). Almost half of the 90% have no access to food, clean water, or shelter. There is an urgent need for practical and sustainable solutions.
This particular technology solution uses a formwork made of a plastic polymer blend to contain the ordinary Portland cement with reinforcing steel bars, and a mortar made of granite or river sand. The Plastic Formwork System has been used in housing projects throughout South Africa, and the company has established branches in thirteen countries, including Namibia, Mozambique, and Mexico.
Keywords - moladi, Design for the Other 90%: CITIES, technology, solution, Plastic Formwork System, South Africa, Smithsonian Cooper-Hewitt National Design Museum, Hennie Botes, formwork, unemployed, homeless

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