Site Statistics - FAR

Umi can calculate a site's Floor Area Ratio (FAR), which is simply the ratio of the total gross floor area of each building on the site to the area the site itself occupies.

In order to perform an FAR calculation, two criteria must be satisfied. First, a floor-to-floor height for every building on the Buildings layer must be set, which requires that each has a building template assigned, as well. See Model Setup - Buildings for details. Second, a ground surface must exist on the "Ground" layer. This must be a flat, closed surface. Multiple ground surfaces can be defined; their area will simply be added together.

The FAR calculation can be executed from with the umi panel's Simulate tab. It is located on the first simulation sub-panel. The "Recalculate" button will perform the calculation and display the result. The button simply executes the "UmiCalculateFAR" Rhino command, which can also be directly invoked.

FAR results are never saved within the umi bundle, and must be recalculated (if desired) every time a project is reloaded.

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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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