BEGIN:VCALENDAR VERSION:2.0 PRODID:-//jEvents 2.0 for Joomla//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:America/Los_Angeles X-LIC-LOCATION:America/Los_Angeles BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:f2ac15b45cf49553cbea4099258b306c215 CATEGORIES:2021 Member Meetings SUMMARY:2021 January Member Meeting DESCRIPTION:
Improvements in building efficiency can significantly reduce carbon emissions and are intrinsic components in greenhouse gas red uction targets. The Passive House concept provides a framework for high-per formance buildings that is growing in popularity in Canada, and particularl y in the Pacific Northwest. The Passive House standard requires its buildin gs to achieve specific performance values for heating energy use intensity, total energy use intensity, spatial temperature variation, heat recovery v entilation performance, and air leakage rate. The promised co-benefits of p assive Houses include superior thermal comfort and indoor air quality.
Passive House design is not prescriptive and can incorporate man y different design aspects, the wall assembly is not an exception. This pre sentation will evaluate the hygrothermal performance of a deep-stud wall as sembly of a Passive House in Victoria, BC, with regards to moisture durabil ity. The concern with deep or double-stud wall assemblies is the combined e ffects of reduced drying with wall configurations that place moisture sensi tive materials in riskier locations. Consequently, for this study, enclosur e monitoring was undertaken in an occupied six-plex over the period of one year. Enclosure monitoring sensor packages were installed in strategic loca tions in the wall assembly to monitor the conditions of the assembly. The a ssemblies were evaluated based on the results of an empirical mold risk ind ex. Air leakage is a significant concern of cavity insulated walls, but the air tightness requirements of Passive House minimize this risk. During thi s presentation, Robert Lepage and David Fox of RDH Building Science Inc. wi ll provide a refresher of how walls behave from a hygrothermal perspective and how we can measure and assess a wall's performance. They will also disc uss how deep stud high performance wall assemblies could have some issues.
Robert Lepage is a Building Science Research Engineer for the Vi ctoria BC, office of RDH Building Science Inc. (RDH). He has a strong theor etical background in hygrothermics and continuum mechanics. Rob specializes in research, forensic investigations, and climate change resilience. His w ork experience consists of a wide range of projects including vulnerability assessments, building enclosure condition assessments, forensic investigat ions, building monitoring, field review and laboratory and field testing. R ob is currently researching biological deterioration of building materials as part of his Ph.D., and is becoming an industry recognized specialist in biodeterioration and fungal growth.
David Fox is an Associate and Senior Project E ngineer for the Seattle, WA, RDH office. He works on a variety of projects including new construction, rehabilitation, investigations, and hygrotherma l modeling. David's focus in the building enclosure field emphasizes therma l efficiency and durability to create sustainable buildings that exceed exp ectations. He focuses on new construction design projects while bringing hi s energy and sustainability experience to provide practical solutions to de sign challenges. Throughout his career, David has continued to expand his k nowledge of building science, hygrothermal modeling, new construction consu lting, and investigations.
This presentation is pending for 1 hour of AIA continuing education credits.
Register here: https://us02web.zoom.us/webinar/register/9616074742557/WN_e NRxHA_MTs2bme03Z3YWAA