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CUE's Mobile Greenhouse
By Marc D. Allan
Butler University’s Center for Urban Ecology Farm is the new home of the first fully automated, mobile greenhouse, an 8-foot-wide by 32-foot-long structure designed and built by Ball State University architecture students to enable the CUE Farm to start plants earlier in the season.
The greenhouse was built to be mobile because the farm is in a floodplain, so a permanent structure was not an option. It will serve as a model for other urban farms, which often experience land access challenges that require mobility.
“A lot of urban farming happens in marginal areas that are challenged in different ways like floodplains,” said Travis Ryan, Chair of Butler’s Biology Department, which oversees the farm. “So the idea of making something that’s mobile that might be able to exist and support facilities in these areas is interesting.”
Ryan said when the decision was made to create a mobile greenhouse, Butler representatives approached Timothy Gray, Associate Professor of Architecture at Ball State. Gray and his students previously designed and built the CUE Farm’s mobile classroom, which is made from a shipping container.
Over two semesters, his students designed and built the structure, taking into account variables such as placement on the farm to get the best sunlight and shelving to house the optimum number of plants. Their design also includes ventilation, heating and cooling, heat-sensitive actuators that open and close windows, fans connected to a thermostat, and an irrigation system customizable to different times of the year and different plants.
“Every detail is really thought through,” Gray said. “That’s part of the learning process for the students. We had to pay attention to all the details to make sure it functions and also find architecture in all those moments.”
Ryan said he is impressed with the students’ work.
“Tim Gray said he really stepped back and let them work,” he said. “They cut the pieces, they welded it, they put it all together. There are some really nice touches to what they’ve done.”
Gray said what his students designed and built is a prototype. There has already been interest from other communities that found the design at https://growinggreen2016.wordpress.com/. One of the calls he received was from Liverpool, England.
“They’re working with the homeless population to develop these urban farming sites around Liverpool, and they’re looking for facilities that can support multiple farms,” he said. “So they’re looking for a greenhouse that can be moved between the different farming sites they’re developing. I thought was an interesting application as well.”
The greenhouse is not only functional, but it caught the attention of the American Institute of Architects. Gray and his students won a prestigious 2016 American Institute of Architects Indiana Design Award for the mobile greenhouse.