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Agricultural Greenhouses: Methodology and Construction

11.02.2014
Regis Eder Neu

Stage 2 – Measuring and excavating the column pits in the foundation trench

In Stage 2 we measure the distance between the pits to be excavated for placing the columns (Photo 15), which, ideally, should not exceed two meters. Given the diameter of the columns (13 cm each), the spacing between each column pit should be 1.87 m (Photo 16). Thus, 16 column pits are excavated on each side of the greenhouse (Photo 17), totaling 32 column pits for a 30-meter long greenhouse. Depth to be excavated is 60 cm for each pit (increase depth if soil is too humid), with a diameter of 20 cm (Photo 18). Excavation of all the column pits can be seen in Photos 19 and 20.

Materials required for execution of Stage 2: folding ruler or measure tape, post hole digger

Photo 15 Measuring distance between holes to be dug
Photo 16 Demarcating 1.87 meter spans between holes to be dug
Photo 17 Digging the pits to the depth of 60 cm
Photo 18 View of 60-centimeter-deep pit
Photo 19 View of excavated holes 1.87 meter apart
Photo 20 View of excavated holes in one side of excavated 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.