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BERRY FARMS ARGRICULTURAL CENTER The project is a community food center that provides multiple services to the surrounding area creating an experiment for urban agriculture which can become a prototype for low tech year-round farming, adaptable to unfriendly sites, immune to climatic conditions, and efficient in its use of space. The first component of the project is agriculture both public and private. The private agriculture elements occupy the southern slope of the site and consist of several green house and aquaponics structures linked to water recycling. The greenhouses face the southern sun most being two storey structures that make use of compost beds and hanging pots much like those found in home gardeners spaces. The aquaponics elements are sunken structures that house large fish breeding tanks and take in sunlight through the roof and being buried in the ground gives them insulation and structural support. The public agriculture element consist of greenhouse pods sunken into the earth to maintain the view over the highest points of the project, they absorb solar radiation through the roof of the structures much like the aquaponics pods. These pods provide spaces for the local population to keep gardening plots for their personal use and to add variety to the produce being sold and grown on the site. The second element is retail with the site providing a grocery store to the area. Ward 8 is the most underserved area in the District having only 1/8 the amount of full service grocery stores as the most affluent wards. Area residents must travel farther to get food because the majority of smaller stores in the area do not offer fresh food and the full service grocery stores they do have are often not stocked or offering only the worst produce and products. Having a community coop offering just picked produce would dramatically augment the food access and health options for people in this underserved area. The third element of the project is the community space that it provides. Ward 8 was largely ignored in the push to establish more park spaces under that last mayor so this site seeks not only to provide agriculture and food options, but also a place of public recreation and resources. The reservoir adds a water feature, while the adjacent boardwalk provides a broad promenade for neighboring residents to enjoy the waterfront atmosphere. Connecting to the boardwalk is a quarter mile planted track winding through the farmers markets giving users a vibrant area to wander through with opportunity to buy directly from local urban farmers.


Zone Division

REGIONAL

SITE

private public

LOCAL

Access & Parking Pedestian Access

4

1

3 2

3

1. pedestrian access (west) 2. pedestrian access (east) 3. main farmers market 4. secondary farmers market 5. entrance to to community center (2nd floor) 6. entrace to cafe 7. entrance to grocery store 8. entrance to parking garage

Transit

1. W8, 94 2. W6, 94 3. W6 4. W8 5. W8

Vehicular Access

1. highway 395 2. freeway exit 3. parking garage entrance 4. parking garage 5. service entrance

Plantings & Hydrollogy

SITE ANALYSIS

extremely dense vegatation for water filtration and flood control

Berry Farms section of Southeast DC

The site is located in the Berry Farms neighborhood of Ward 8 in southeast Washington, DC. The area despite having a great deal of open land and abandoned lots does not have much of an agricultural atmosphere. What southeast does have is and underserved population and a reputation as a food desert, an area where fresh fruits and vegtables are virtually unavailable. Even with two new full service grocery stores opening up in recent years there is still only a fraction of the stores here found as west of the Anacostia River.

dense brush for water filtration

resevoir to hold rainwater runoff and provide recycled water for the site

RESIDENTIAL NEWER RESIDENTIAL MILITARY BASE EDUCATIONAL SITE RETAIL

SITE

MAJOR ROAD MINOR ROAD


WIREFRAME SITE PLAN

SITE PLAN

100

25 50

5 10


Zone Division

Access & Parking

Plantings & Hydrollogy

1 1

8

7

2

4

2

3

5

6 5

4

1

3 2

3

4

private

public

Pedestian Access

1. pedestrian access (west) 2. pedestrian access (east) 3. main farmers market 4. secondary farmers market 5. entrance to to community center (2nd floor) 6. entrace to cafe 7. entrance to grocery store 8. entrance to parking garage

Transit

1. W8, 94 2. W6, 94 3. W6 4. W8 5. W8

5

Vehicular Access

1. highway 395 2. freeway exit 3. parking garage entrance 4. parking garage 5. service entrance

extremely dense vegatation for water filtration and flood control

dense brush for water filtration

resevoir to hold rainwater runoff and provide recycled water for the site


farmer’s market

PUBLIC SPACES

BOARDWALK

ENTRY

FARMERS MARKET ADA ACCESSIBLE ACCESS RAMPS

The public spaces are an important aspect of the project because the serve to bring pedestrian traffic to the site, provide recreational area and allow people to get closer to the process of growing. Of the three entrances to the site, three are pedestrian centered and all have access out to public space. The Boardwalk area is a pier structure that spans over the reservoir allowing access to the grocery store, community center and lower farmers market. The space features lush plantings and ample seating to encourage a park-like setting for the entire community. The farmers markets are two areas running through the center of the site containing a broad promenade lined by small greenhouse pods which can be rented out by members of the community who want to try their hand at gardening. The promenade is to be used not only to view the pods but also as a space to sell excess produce from the micro-pods, further diversifying options for fresh produce.


TENSION DIAGRAMS

Site structures utilite tenstion cables to suspend the exterior skin made from EFTE. This lightweight skin only with 1% of its glass counterpart removing the need for heavy supports. The structure is allowed to function similar to a circus tent with cables connecting to the few supports and paired to counteract each others tension. The lightness of the structure and the external supports allow the structure to be elevated off the landscape wherever possible in order to minimize impact to the land and allow for simpler construction on a flat platform rather than spending time and resources contouring the landscaped.

column

cables

column

cables


electrical

hvac and ventilation scheme

panel structure

tunnel system is designed to be built in easy to instal modules that grow as the tunnels are dug. each one is sperated into a ten foot section which makes them easy to use as needed or close off when not needed and even repurpose for flexibility. Lighting is accomplished by stringing wiring ito the walls of the precast panels which also contain the vapor barrier, insulation, and structure which will replace the temporary supports used to initially dig the tunnel.(shown to the right).

tunnel supports


PLANTERS The plant beds function by watering the root system with water from the cistern, any unused water filters to the gravel drain below the compost bed and is cycled back up to the plant. Plants lose purified water through transpiration, literally breathing out water along with fresh air, a dehimidifier intgreated into the mechanical systems climate control system collects the expended water and places it back into the systems hydro-cycle

dehumidifier


12”

The structure of the greenhouse and all other above ground structures is a tentlike system of polls and tension cables. The tension cables are tightened by a a crank system when needed to stiffen the structure through changes in weather.

3” 6”

the skin of the structure is made from two ETFE panels sealed to a connection hook that links together. All connections are insulated by neoprene barriers to make them air time. The layers of ETFE are filled with air that creates a layer of insulation to keep the interior temperature stable though all seasons and minimze the amount of energy needed for temperature control.

10

Heat is provided by an infloor system that utilizes a geothermal heat loop.

2 5

1 12”

3” 6”


AQUAPONICS POD FLOOR PLANS

ground level

level two

fish tank basin 20

40

growing bed circulation fish tank

5 10


AQUAPONICS POD SECTION tension ring neoprene sealant panel edge

air insluation barrier ETFE panel

2”

6”

3”

water main

The water main brings warmed water to the fish tank. Before it reaches the tank it goes through collection and filtration. Rainwater filters through site plantings to reservoir to water filtration to the boiler in the mechanical room before finally reaching its destination in the fish tank--. 20

5

20

5 10

nitrate pipe

10

composted soil gravel gravel drain growing bed

water cycle

fish tank

municiple water

pump

reservoir

gravel filter

pump

biosand filter

ledge fish tank irrigation piping pump footing insulation vapor barrier

cistern

water heater

20

5 10


BUILDING STRUCTURES STRUCTURE

above ground

below ground

Site structures utilite tenstion cables to suspend the exterior skin made from EFTE. This lightweight skin only with 1% of its glass counterpart removing the need for heavy supports. The structure is allowed to function similar to a circus tent with cables connecting to the few supports and paired to counteract each others tension.

tunnel system is designed to be built in easy to instal modules that grow as the tunnels are dug. each one is sperated into a ten foot section which makes them easy to use as needed or close off when not needed and even repurpose for flexibility

The tunnels are built by digging a ten foot section into the terrain and reinforcing them with post and beam construction and plywood boards to hold back the soil. Once the tunel is dug permanent structure of concrete percast panels are carried in and set

HOW IT’S BUILT

TENSION DIAGRAMS column

MECHANICS OF THE TUNNELS Eletricity in the tunnels is supplied by wiring run along the walls rather than implanted in the walls. This allows it to be accessed easily for repair, additions, and rerouting as neccessary.

column

cables

STRUCTRUAL MODEL WALL PANEL concrete panel insulation vapor barrier furring cement board

SKIN DIAGRAM panel in section

panel in elevation

The skin of the structure is made of EFTE draped over the exterior in a lightwieght aluminum frame. Each panel is inflated with air creating a blanket of insulation that keeps greenhouses and structures warm.

TUNNEL WALL STRUCTURE precast concrete panels already containing insulation and vapor barrier will be used for the structural walls of the tunnel, the panels are then faced with cement board.

MECH ROOM

Venitilation of the tunnels is accomplished by adding a vent to the roof of every third segment and a large industrial fan to the main in the mechanical room located on the southern side of site near the greenhouses and aquaponics cones.


FLOORPLANS

100

25 50

10

main structure level 1

main structure level / arboretum / farmers market / tower structure level 1


FLOORPLANS & SECTIONS 10

50 25

5

tower section

greenhouse level 2

greenhouse

aqua section

greenhouse level one w/ aquaculture cell

arboretum and main structure

100

25 50

10


PLANTERS The plant beds function by watering the root system with water from the cistern, any unused water filters to the gravel drain below the compost bed and is cycled back up to the plant. Plants lose purified water through transpiration, literally breathing out water along with fresh air, a dehimidifier intgreated into the mechanical systems climate control system collects the expended water and places it back into the systems hydro-cycle

dehumidifier


SITE SECTIONS

loading grocery store/retail space

community center

administration greenhouse

tunnel circulation


scale 1’=1/16”


MECHANICAL DIAGRAM All of the food growing elements utilize the closed loop systems to provide water and nutrients to plants and animals farmed in each pod and continually recycle as much as possible for the elimination of waste. The systems starts by capturing rainwater that falls on the site and allowing it to filter through dense plantings concentrated at gullies contoured in the landscape down to a reservoir at the lowest elevation of the site. This reservoir retains site water and feeds the pods without requiring them to pull from the municipal water system. Greenhouse Pods Greenhouse pods pull water from the on-site reservoir via pump in the mechanical room to water crops. Plants lose water through transpiration which in a traditional greenhouse is dispersed by opening windows to vent excess water, but the water coming from plants is purified and should be reused. In the closed loop system excess water is harvested by dehumidifiers and recycled back into the system where needed. Only if the greenhouse produces more water through plant transpiration than can be recycled or held in the reservoir does the system vent humidity to the outside.

LANDSCAPE

rainwater filters through the natural landscape to the reseviour at the lowest points of the site helping to purify it and provide supplemental water for greenhouses and non-potable uses

RESEVIOR

TOWER

STORE/COMMUNITY CENTER MECH

GREENHOUSE GREENHOUSE GREENHOUSE

MECH

the tunnels have a dedicated mechanical room that contains the hvac system that assist in ventilation along with the air tubes. It also contains the connections for electricity to be routed through the tunnels for lighting. This system connects to a windmill utilizing the sites proximity to the Anacostioa River

WASTE FROM HARVEST AND AND OTHER SOURCES

PLANTS COMPOSTING CYCLE HEAT

Composting Organic waste matter produced on site or collected from surrounding areas (ex. Brewery waste, restaurant waste, or waste produced on site from harvesting plants or the grocery) would be composted in the greenhouse pods bin. The compost gives off large amounts of heat which is retained by the air filled double layer skin. Any additional heat needed by the greenhouse as well as heating in areas not suitable for composting like the tunnels or the grocery are provided by machinery in one of the sites two mechanical rooms. Aquaponics Pods The aquaponics pods function by cycling water between the fish tank in the lower level to the two growing beds at on the upper levels. Water filled with fish waste is pumped from the tank level on the bottom to the upper two levels where the nitrates contained in it are absorbed by the plants as fertilizer. As the plants leach impurities from the water converting it to food they release clean water through their roots and transpiration. This water filters back down to the fish tank providing it with clean water. Each tank has a diameter of 30 feet and a depth of four feet allowing for approximately 8800 gallons of water. Tilapia and perch can be farmed at densities of up to one fish per gallon, That’s a maximum of 8800 fish per tank or 26,400 fish at any given time.

tower sturcture holds storage, locker rooms and employee meeting and lounge space daylit by one central occulus

when the humidity in the greenhouse is more than can be recycled excess moisture is released through through vents.

COMPOST

VENT

AQUAPONICS CELL DEHUMIDIFIER

GREENHOUSE

RESEVOIR

plants release water through transpiration which is collected by the dehumidifier which then pipes the water back to the plants for recycling.

LANDSCAPE


Thesis