Understanding the Impacts of Your Design Decisions
American Canyon High School A Case Study in using BIM for Sustainable Design Understanding the Impacts of Your Design Decisions Sustainable Design Philosophy Sustainable Design is not a separate effort, it is an integral part of the design process for every project. Consider the environment in every design decision with the same importance as the program and the budget. %NVIRONMENT %CONOMY -ÕÃÌ>>LiÊiÃ} #OMMUNITY Understanding the Impacts of Your Design Decisions American Canyon High School • 2200 Students • 260,000 s.f. • 50 Acres • 2500 seat Gymnasium • 400 seat Theater • 4 Small Learning Communities • 5 Career Pathway Centers • Aquatic Center • Outdoor Athletic Facilities Understanding the Impacts of Your Design Decisions American Canyon High School Arial View from Northwest Understanding the Impacts of Your Design Decisions American Canyon High School Theater and Administration Entries Understanding the Impacts of Your Design Decisions Library and Multi-Use Entries from Campus Green Understanding the Impacts of Your Design Decisions American Canyon High School Main Classroom Building and Campus Green Understanding the Impacts of Your Design Decisions Green Design • Daylighting • All Classrooms designed to provide balanced daylight • Sunshades, clerestories, daylighting glazing, skylights and many window configurations are used to provide balanced daylight in a variety of conditions. • Controls dim lights when daylight is available. • Ventilation • Upper and Lower operable windows provided in all classrooms. • Library and Theater use Displacement Ventilation. • Gymnasium is cooled through Natural Ventilation. • Sustainable Materials • Materials with Recycled Content: Carpet, Metal Roofing, Insulation, Wheel Stops, Landscape Mulch, Steel, High Fly Ash Concrete • Materials with Rapidly Renewable Content: Cork Faced Wall Panels, Linoleum, Toilet Partitions • Low Emitting Materials: Carpet, Paperless Gypsum Board, Linoleum, Formaldehyde Free Insulation, Low-VOC Paint Understanding the Impacts of Your Design Decisions Green Systems • 500 kW PV System • Three Types: Crystalline, Thin-film and PV Glass • Integrated into building design. • Provides 25%+ of school’s energy needs. • Ground Loop Heat Pump Mechanical System • The Geothermal Heat Pump system takes advantage of the constant temperature of the ground to help heat and cool the buildings. Heat is transferred to and from the ground through a closed-loop system. • High Efficiency and Low energy use • Long lifespan and Low Maintenance • More Architectural Flexibility • Lower noise from mechanical units. • Water Conservation • Reclaimed water for irrigation • Low flow faucets and showers • Waterless Urinals • Dual-flush Toilets • Stormwater management featuring Bioswales and Retention Ponds Understanding the Impacts of Your Design Decisions CHPS Verified Scorecard Summary First CHPS Verified School: 43 Points Total •Sustainable Sites: 8 Points out of 14 • Joint-use of Facilities, Stormwater filtration, cool roofs, bicycle parking • Water: 5 Points out of 5 • Reclaimed water for irrigation, dual flush toilets, waterless urinals and low flow fixtures • Energy: 18 Points out of 20 • 500kW PV system, thermally and energy efficient design, enhanced commissioning • Materials: 3 Points out of 12 • 75% Construction Waste Recycling, Recycled materials, rapidly renewable materials • Indoor Environmental Quality: 12 Points out of 20 • Daylighting, View Windows, high performance lighting, low emitting materials, improved acoustic performance. • Policy and Operations: 0 Points Understanding the Impacts of Your Design Decisions 3 Design Decisions helped by BIM Site Design Sun Shade Design Daylighting Understanding the Impacts of Your Design Decisions BIM Design Process • Schematic Concept Sketch, rough ArchiCAD Model, Sketchup, etc. • Developed Concept ArchiCAD Model • Analyze and Verify 3rd party BIM applications (Ecotect, Google Earth, etc.) ArchiCAD tools. • Final Design Understanding the Impacts of Your Design Decisions Site Design Understanding the Impacts of Your Design Decisions Existing Views Views to the adjacent hills and across the bay to Mt. Tamalpais were prominent features of the site. Understanding the Impacts of Your Design Decisions Conceptual Site Design • Campus buildings organized around an elliptical path around the Library/Admin building and the Campus Green • Prominent view corridors to the southwest and southeast from the Campus Green and Plaza. Understanding the Impacts of Your Design Decisions Using Google Earth to Analyze Sight Lines Google Earth Connections Add-on for ArchiCAD provides a direct import-export connection between ArchiCAD and Google Earth. Understanding the Impacts of Your Design Decisions Project Context Understanding the Impacts of Your Design Decisions Project Context Understanding the Impacts of Your Design Decisions View of Adjacent Hills Understanding the Impacts of Your Design Decisions View of Mt. Tamalpais Understanding the Impacts of Your Design Decisions Sun Shade Design Understanding the Impacts of Your Design Decisions Schematic Shading Concepts Covered balconies on South, East and West sides of Classroom buildings. Typical Window design with interior light shelf and exterior sunshade. Daylit Corridors and Lobbies with sun control. Understanding the Impacts of Your Design Decisions Developed Shading Concepts Exterior sun shade/light shelf and translucent daylighting glass in the transom. Understanding the Impacts of Your Design Decisions Sun Shade Analysis in Ecotect Solar Tool The Solar Tool is an external program used to analyze schematic window shading designs. Understanding the Impacts of Your Design Decisions Basic Shadow Display Understanding the Impacts of Your Design Decisions Shading Diagram Understanding the Impacts of Your Design Decisions Shading Animations for One Day Understanding the Impacts of Your Design Decisions Shading Animations for One Time Throughout the Year Understanding the Impacts of Your Design Decisions Comparing 3 Sunshade Options Understanding the Impacts of Your Design Decisions Shadow Animations in ArchiCAD Understanding the Impacts of Your Design Decisions Shadow Animations in ArchiCAD Understanding the Impacts of Your Design Decisions Daylighting Understanding the Impacts of Your Design Decisions Schematic Daylighting Concepts Building Orientation to provide balanced light and as many north and south windows in each classroom. Skylights and Clerestory windows to provide light to corridors and lobbies. Understanding the Impacts of Your Design Decisions Developed Daylighting Concepts Exterior sun shade/light shelf and translucent daylighting glass in the transom. Understanding the Impacts of Your Design Decisions Daylighting Analysis in Ecotect Classroom in Question: Second Floor Classroom with windows on South, East and west sides and clerestory windows on the north side. Understanding the Impacts of Your Design Decisions ArchiCAD to Ecotect Process • Export gbXML file from ArchiCAD using add-on gbXML is an independent exchange format for building model information that exports a thermal model from ArchiCAD. • Open gbXML file in Ecotect • Make some adjustments to the model in Ecotect • Run a variety of Ecotect analysis modules on the model Understanding the Impacts of Your Design Decisions Sun path analysis of exterior light shelf Understanding the Impacts of Your Design Decisions Daylighting Analysis: Daylight Levels Understanding the Impacts of Your Design Decisions Daylighting Analysis: Daylight Factor Understanding the Impacts of Your Design Decisions Internally Reflected Component of Daylight Factor Understanding the Impacts of Your Design Decisions Externally Reflected Component of Daylight Factor Understanding the Impacts of Your Design Decisions Direct Component of Daylight Factor Understanding the Impacts of Your Design Decisions Shadow Animations March 19th May 19th Understanding the Impacts of Your Design Decisions Thanks to QKA Team: Anna Wells,Barry Power, Bryan Chubb, Cam Hawing, Chris Scofield, Dan Malone, Jeff Howe, Jon Stong, Lyanne Schuster, Maria Thomas, and Shama Odenburg. Consultant Team: ZFA Structural Engineers, Costa Engineers, O’Mahony & Meyer, The Shalleck Collaborative, Chaudhary Associates, Gretchen Stranzl McCann Landscape Architect, Monk and Associates, Kleinfelder, Green Building Studio, Architectural Energy Corporation, Counselman Hunsaker, Ballinger Kitchen Design, Lohden Steele, Excelize, Inc. Understanding the Impacts of Your Design Decisions
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