Project Data Sheet
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| Passive House Days Attendance: |  '10 | |||
| Building type: | school | campus | university (Passive House new build) | |||
| Project description: | The Bagley Classroom is located in the Bagley Nature Area, an impressive 50 acre contiguous nature preserve within the University of Minnesota Duluth campus in the heart of downtown Duluth and near the shore of Lake Superior. The campus serves over 11,000 students. The Bagley Classroom sits on a previously developed site that offers dramatic views of the surrounding forest and pond. The existing clearing was ideal for passive and active solar, while still providing wind protection and east and west summer shading. The building serves as a multi-purpose assembly space and environmental studies center. Many departments use the facility as a field station to supplement exercises within the nature area. Engineering students use the building as a laboratory to monitor performance and learn about the construction and systems. The building incorporates many sustainable features and the project was constructed by the University of Minnesota Duluth Facilities Management Department.
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| Location: | US-55812 Duluth (Minnesota) | |||
| Number of apartments / units: | 1 | |||
| Treated Floor Area according to PHPP: | 144 m² | |||
| Construction type: | timber construction | |||
| Exterior wall: | basswood paneling: 19,05mm
2x2 furring & polyisocyanurate board: 38,1mm poly film: 8,0mm SIP OSB Sheathing: 29,62mm SIP EPS Core with 2x wood splices: 406,4mm SIP OSB Sheathing: 29,62mm felt paper: 1,6mm air space: 6,35mm zinc cladding U-value = 0,089 W/(m²K) | |||
| Basement floor / floor slab: | concrete slab: 127,0mm
EPS foam: 101,6mm poly film: 8,0mm EPS foam: 203,2mm U-value = 0,106 W/(m²K) | |||
| Roof: | basswood paneling: 19,05mm
2x4 furring & polyisocyanurate board: 88,9mm poly film: 8,0mm SIP OSB Sheathing: 29,62mm SIP EPS Core with I-joist splices: 355,6mm SIP OSB Sheathing: 29,62mm EPS tapered insulation board: 76,2mm EPDM double membrane: 6,35mm LiveRoof Vegetative Tray System: 101,6mm U-value = 0,067 W/(m²K) | |||
| Frame: | Trocal / Innotech, InnoNova 70.M5 uPVC Editor's note: For a very good thermal protection and full comfort in passive buildings the calculated Uf-value 0.80 W / (m² K )according to DIN EN 10077) is recommended. The calculated Uw-value including installation and location is recommended to be <0.85 W / (m² K). Uw-value = 1 W/(m²K) | |||
| Glazing: | Cardinal Insulated Glass, triple (36mm):
5mm 179 LoE/argon/5mm Clear/argon/5mm 179 LoE. XLedge Stainless Steel Spacer. g-value = 54 % | |||
| Entrance door: | WoodMax, custom solid wood door with insulation core Ud-value = 0,887 W/(m²K) | |||
| Ventilation: | Venmar, 700i HRV Balanced Heat Recovery Ventilation system for supply and extract air. Merv 13 supply air filter. Merv 5 extract air filter. 170 cfm standard airflow. 450 cfm maximum airflow. Defrost HX. CO2 sensor airflow control. Natural ventilaton and passive night cooling system utilized in the Summer. | |||
| Heating installation: | Electric duct coil post-heater at HRV.
Electric boiler with in-floor radiant heating system. | |||
| Domestic hot water: | Single-point tankless electric hot water heater at each handrinsing sink | |||
| Air tightness: | n50 = 0,47/h | |||
| Ecological aspects: | LEED Platinum Certification. Zero Energy Building (source energy) using building integrated Photovoltaic Array.
90% reduction in potable water use with composting toilets and low-flow sensor faucets. 70% reduction in artificial lighting using natural lighting and sensors. Summer natural ventilation and night cooling system. 86% FSC wood products. 17% recycled content products. 15% reused products. 35% local products. 100% low-VOC and NAUF products. Previously developed site with access to public transport. Zero increase in stormwater runoff quantity and pollutants. | |||
| Annual heating demand: | 14 kWh/(m²a) calculated according to PHPP | |||
| Heating load: | 21 W/(m²) calculated according to PHPP | |||
| Primary energy requirement: | 114 kWh/(m²a) total demand on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP | |||
| Construction costs (gross): | 5017 €/m² Treated Floor Area according to PHPP (costs include site development, construction, building services, appurtenant structures, additional costs) | |||
| Building structure costs (gross): | 3401 €/m² total demand (costs only include the construction and the building services) | |||
| Year of construction: | 2010 | |||
| Architecture: | Salmela Architect | |||
| Building services: | Gausman & Moore | |||
| Building physics: | Carly Coulson, AIA, Passive House Designer | |||
| Statics: | Meyer Borgman Johnson | |||
| Craftsperson / parties involved: | ||||
| Miscellaneous: | US system:
Treated floor area: 1551 ft2 Specific heat demand: 4,56 kBTU/(ft²yr) Heat load: 6,6 Btu/h/ft² Specific primary energy demand: 36 kBTU/(ft²yr) | |||
Project database www.passivehouse-buildings.org | Last change: 24.02.2011