The Builder prepares the Rhino geometry for UrbanDaylight. The input envelopes represent the hull of the buildings. The Builder will create horizontal sections to create floor plates. Therefore, a floor - to - floor distance has to be specified. “F2F” strict will force the Builder to create the cuts with the exact distance. If it is unchecked it will create equal distance cuts. The facade opening ratios are specified below. Specifications can be made orientation dependent.

North = North +- 25 degrees.

In the Daylight tab target illuminance and blind systems are specified.

In the Meshing tab the resolution of the envelope analysis mesh are set.

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In Short

Umi is a Rhino-based design environment for architects and urban planners interested in modeling the environmental performance of neighborhoods and cities with respect to operational and embodied energy use, walkability and daylighting potential. Since 2012, Umi has been  developed by the Sustainable Design Lab at the Massachusetts Institute of Technology with support from a National Science Foundation EFRI_SEED project, the MIT Energy Initiative, the Kuwait-MIT Center, the Center for Complex Engineering Systems (CCES) at KACST and MIT, Transsolar Climate Engineering and United Technologies Corporation. Further tool developed is now also being conducted at the Environmental Systems Lab at Cornell University.

A first public version of Umi was released during a public symposium on Sustainable Urban Design on May 6th 2013 at the Massachusetts Institute of Technology. Version 2.0, which also includes an embodied energy module, was released on November 7th 2014.

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