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Agricultural Greenhouses: Methodology and Construction

11.02.2014
Regis Eder Neu

Stage 1 – Selecting the site, determining foundations’ width and length, and demarcating and leveling the area

For a smooth flow of the activities involved in the construction process of an agricultural greenhouse with alternative materials we must choose an appropriate site on which to build that is free of humidity, protected from the wind and, preferably, leveled. The greenhouse must be located in an area where there is a prevalence of sun during the day and that is not shaded by trees or constructions. Stage 1 begins by demarcating the site with a string and stakes (Photo 1), measuring width and length, (Photos 3 and 6), as well as marking out the area (Photos 2, 4 and 5). In this stage of the construction it is also necessary to level the entire area (Photo 7, 8, 9 and 10) to ensure that the greenhouse foundations and the greenhouse itself are leveled. Now begins the excavation of a trench (Photos 11, 12, 13 and 14) measuring 15 cm in depth and 40 cm in width (these measures may vary depending on material – bricks, blocks, concrete footings). Building the greenhouse foundation is necessary to keep the soil inside the greenhouse from being washed away, as well as animals and water from getting in.

Materials required for execution of Stage 1: folding ruler or measure tape, string, water level, try square, shovel, cutting shovel, hammer, 8 (eight) 1.20-meter-long stakes

Schema

Photo 1 Marking out the site
Photo 2 Marking out the site
Photo 3 Leveling and marking out the site
Photo 4 Marking out the site
Photo 5 Marking out the site
Photo 6 Measuring, plumbing, and leveling the site
Photo 7 Leveling the area
Photo 8 Leveling the area
Photo 9 Leveling the area
Photo 10 Leveling the area
Photo 11 Digging the foundation trench
Photo 12 Digging the foundation trench
Photo 13 Digging the foundation trench
Photo 14 Digging the foundation trench

 

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About the organisation

CIDADES SEM FOME (CITIES WITHOUT HUNGER) is a non-governmental organization (NGO) which has set up sustainable agrarian projects in urban and rural areas based on organic farming. The aim is to help and teach people to manage their own business and become financially independent. Community Gardens, School Gardens and Agricultural Greenhouses have been developed on unused and neglected public and private areas within social focal points to provide jobs and improve the diets of adults and children. In 2009 the Small Family Farms Project, the organizations fourth project, has been set up in Rio Grande do Sul, to train farmers in multiple cropping as an alternative to monoculture and help them starting new businesses in organic farming.

CITIES WITHOUT HUNGER was founded in 2004 in São Paulo by Hans Dieter Temp, who has a degree in Business Administration, and is a Technician for Agriculture and Environmental Policies. In 2013 Hans Dieter Temp was selected and awarded with the title Social Entrepreneur “Changemaker” by Ashoka. CITIES WITHOUT HUNGER has received numerous national and international awards, such as the Milton Santos Award in 2014, created to honor entities and people who have contributed with the city of São Paulo. In 2012 CITIES WITHOUT HUNGER was selected by Caixa Econômica Federal for its commitment to the realization of the UN-Millennium Goals. The organization was also awarded with the Dubai International Award for Best Practices 2010 (UN-HABITAT).

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Cover Photo: Timour Chafik/studiomonaco. Translation (English & Portuguese): Katarzyna Fayterna.