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Open AccessArticle

Monitored Indoor Environmental Quality of a Mass Timber Office Building: A Case Study

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Energy Studies in Buildings Laboratory, Department of Architecture, University of Oregon, Eugene, OR 97403, USA
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Biology and the Built Environment Center, University of Oregon, Eugene, OR 97403, USA
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Mechanical and Materials Engineering, Portland State University, Portland, OR 97201, USA
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School of Civil & Construction Engineering, Oregon State University, Corvallis, OR 97331, USA
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Department of Wood Science & Engineering, Oregon State University, Corvallis, OR 97331, USA
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Author to whom correspondence should be addressed.
Buildings 2019, 9(6), 142; https://doi.org/10.3390/buildings9060142
Received: 14 May 2019 / Revised: 8 June 2019 / Accepted: 11 June 2019 / Published: 13 June 2019
A broad range of building performance monitoring, sampling, and evaluation was conducted periodically after construction and spanning more than a year, for an occupied office building constructed using mass timber elements such as cross-laminated timber (CLT) floor and roof panels, as well as glue-laminated timber (GLT) beams and columns. This case study contributes research on monitoring indoor environmental quality in buildings, describing one of the few studies of an occupied mass timber building, and analyzing data in three areas that impact occupant experience: indoor air quality, bacterial community composition, and floor vibration. As a whole, the building was found to perform well. Volatile organic compounds (VOCs), including formaldehyde, were analyzed using multiple methods. Formaldehyde was found to be present in the building, though levels were below most recommended exposure limits. The source of formaldehyde was not able to be identified in this study. The richness of the bacterial community was affected by the height of sampling with respect to the floor, and richness and composition was affected by the location within the building. Floor vibration was observed to be below recognized human comfort thresholds. View Full-Text
Keywords: mass timber; cross laminated timber; air quality; bacterial community; vibration mass timber; cross laminated timber; air quality; bacterial community; vibration
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Stenson, J.; Ishaq, S.L.; Laguerre, A.; Loia, A.; MacCrone, G.; Mugabo, I.; Northcutt, D.; Riggio, M.; Barbosa, A.; Gall, E.T.; Van Den Wymelenberg, K. Monitored Indoor Environmental Quality of a Mass Timber Office Building: A Case Study. Buildings 2019, 9, 142.

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