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Fall 2014




The purpose of this study was to understand and develop the best wall system possible for ZGF Architects to potentially implement into future projects in the city of Fairbanks.Alaska that requires a wall system to reach at least R-30. ZGF has been working on an 80.000 square foot surgical addition to the Fairbanks Memorial Hospital and ask for our research to infonn future insulation system selections. The extreme climate of Fairbanks.Alaska is what makes this project unique and challenging and then you add to that a medical program that requires different interior temperatures for each program. The hospital currently uses an EAS wall system and ZGF would like to skin the addition with a rainscreen sys tem➔ They expect that this system will out perform the current system and be more sustainable. Throughout the process we have been working alongside Liz Rhodes and Rich Shiga. they have helped us orient our research and kept us on the path to understanding insulation in Fairbanks.Alaska. Our goal throughout this process has been to understand insulation types better. their application in a wall system and tried to achieve that through research and t esting using digital media. Following several weeks of researching different insulation types we began to select the most viable one's for Fairbanks alongside our representatives from ZGF Architects.After selecting eight insulation types from our research we began to eliminate them in order to begin testing the best assemblies. We have three assemblies to show today that we selected based on extensive research and from that we discovered the most effective system based on the REMOTE wall system strategy. Of the three we discovered that the most effective combination was O osed-ceU Potyurethane Spray Foam with Mineral Wool closer to the exterior facade. The REMOTE wa.11 system has two-thirds of the insulation on the outside of the framed in wa.11 and one-third is within the stud frame. In order to test eadl system we used a combination of WU Fl and the Dew Point Calculator.These tools allowed us to measure dew point and relative humidity for each wall assembty.WUFI is able to calculate the system in layer s. however one weakness it has is it can't account for thermal bridging through attachment points such as the hardware used in the system. After using both systems to run test it woukl make sense to use a different digital media that looks at relative humidity and dew point from three dimensions.


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Fairbanks Wall System Study

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