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Code Compliance for Advanced Homes – Meeting Code with Fewer Gizmos
 

Code Compliance for Advanced Homes – Meeting Code with Fewer Gizmos

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Paul Dowsett -

Paul Dowsett -
Using an intelligent combination of passive and active strategies to minimize the design’s impact on the environment

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    Code Compliance for Advanced Homes – Meeting Code with Fewer Gizmos Code Compliance for Advanced Homes – Meeting Code with Fewer Gizmos Presentation Transcript

    • Code Compliance for Advanced Homes "Meeting Code with Fewer Gizmos"A presentation and discussion with Paul Dowsett, Architect
    • Meeting Code Without the GizmosFirst: Why?Next: How?
    • Sustainable Design:Using passive strategies that minimize the design’s impact on the environment.
    • Sustainable Design:Using an intelligent combination of passive and active strategies that minimize the design’simpact on the environment.It’s as easy as using the site to its full potential, choosing the right materials, andknowing how to put them together properly based on how you arrange the project.
    • Why is Sustainable Design Important?The way many buildings are built and how they function has been reported to consume moreenergy, resources and greenhouse gases than anything else on the planet.
    • Why is Sustainable Design Important?The way many buildings are built and how they function currently consumes more energy,resources, and greenhouse gases than anything else on the planet.Building responsibly does not necessarily entail expensive gizmos; rather, it is a matter of goodplanning. Grey-water recycling “technology”
    • The 3 Step Approach:A simple strategy to maximize performance and minimize cost and environmental impact is to:
    • The 3 Step Approach:A simple strategy to maximize performance and minimize cost and environmental impact is to:1. Reduce energy demands through intelligent design choices; taking advantage of the free resources nature has to offer: sunlight for heat and daylighting, rainwater for irrigation, and breezes for cooling ventilation
    • The 3 Step Approach:A simple strategy to maximize performance and minimize cost and environmental impact is to:1. Reduce energy demands through intelligent design choices; taking advantage of the free resources nature has to offer: sunlight for heat and daylighting, rainwater for irrigation, and breezes for cooling ventilation2. Implement renewable resources to cover the greatest possible extend of remaining energy demands.
    • The 3 Step Approach:A simple strategy to maximize performance and minimize cost and environmental impact is to:1. Reduce energy demands through intelligent design choices; taking advantage of the free resources nature has to offer: sunlight for heat and daylighting, rainwater for irrigation, and breezes for cooling ventilation2. Implement renewable resources to cover the greatest possible extend of remaining energy demands.3. Use fossil fuels as efficiently as possible to supply any remaining energy demand
    • The 3 Step Approach:A simple strategy to maximize performance and minimize cost and environmental impact is to:1. Reduce energy demands through intelligent design choices; taking advantage of the free resources nature has to offer: sunlight for heat and daylighting, rainwater for irrigation, and breezes for cooling ventilation2. Implement renewable resources to cover the greatest possible extend of remaining energy demands.3. Use fossil fuels as efficiently as possible to supply the remaining energy demand This approach results in a design that will appeal to owners and tenants who are conscious of both their impact on the global environment, their personal environment, as well as the impact on their wallets.
    • CommonlyKnown As… The Trias Energetica Model of Energy Sustainability
    • What about the building code?The OBC’s Supplementary Standard SB-12, Energy Efficiency of Housing, isactually quite progressive
    • What about the building code?The OBC’s Supplementary Standard SB-12, Energy Efficiency of Housing, isactually quite progressiveThree Ways to Comply
    • What about the building code?The OBC’s Supplementary Standard SB-12, Energy Efficiency of Housing, isactually quite progressiveThree Ways to Comply1. Prescriptive Compliance Package- Traditional requirements, but more stringent. eg Ceiling with Attic Space must have a minimum R-Value of 50.
    • What about the building code?The OBC’s Supplementary Standard SB-12, Energy Efficiency of Housing, isactually quite progressiveThree Ways to Comply1. Prescriptive Compliance Package2. Energy Star Compliance- Building must be in compliance with technical requirements of NRCan, “Energy Star for New Homes: Technical Specifications-Ontario”
    • What about the building code?The OBC’s Supplementary Standard SB-12, Energy Efficiency of Housing, isactually quite progressiveThree Ways to Comply1. Prescriptive Compliance Package2. Energy Star Compliance3. Performance Compliance- Using energy modeling to simulate that the proposed building’s energy use is not greater than the usage of a Prescriptive Compliance Package home.
    • What about the building code?The prescriptive pathway to compliance demands intelligent levels ofinsulation, high performance glazing, and efficient mechanical equipment. Allof this is good, but…
    • What about the building code?The prescriptive pathway to compliance demands intelligent levels ofinsulation, high performance glazing, and efficient mechanical equipment. Allof this is good, but…The real opportunity for implementing the 3 Step Approach in SB-12 lies inthe Performance Pathway.
    • What about the building code?The prescriptive pathway to compliance demands intelligent levels ofinsulation, high performance glazing, and efficient mechanical equipment. Allof this is good, but…The real opportunity for implementing the 3 Step Approach in SB-12 lies inthe Performance Pathway. Because The Performance Pathway permits consideration of bothactive and passive factors, excellent energy performance can be achievedwithout expensive technologies.
    • What about the building code?At SUSTAINABLE.TO, we use energy modeling both for code compliance, as well as a design tool.REM/Rate- S.TO is using REM/Rate in order to obtain Home Energy Rating System (HERS) ratings for its houses. HERSprovides a numerical index, generally between 0 and 150, to represent the home’s energy performance. The lower thebetter, a HERS index of 60 or lower will easily achieve SB-12 code compliance. S.TO’s homes are scoring between 40 and45 on the HERS scale.
    • What about the building code?In our office, we use energy modeling both for code compliance, as well as a design tool.REM/Rate- SUSTAINABLE.TO is using REM/Rate in order to obtain Home Energy Rating System (HERS) ratings for itshouses. HERS provides a numerical index, generally between 0 and 150, to represent the home’s energy performance. Thelower the better, a HERS index of 60 or lower will easily achieve code compliance. S.TO’s homes are scoring between 40and 45 on the HERS scale.eQuest- SUSTAINABLE.TO also uses eQuest, a US Department of Energy software, for internal design assistance. eQuestis an advanced platform that allows us to analyze “parametric runs” of our houses. This means that we can quickly andefficiently gain a quantitative picture of the energy effect of say, replacing an old baseboard system with hydronic, radiantfloor heating inside a thermal mass topping.
    • Basic Design• A smart building has a simple footprint, which reduces the overall building envelope
    • Basic Design• A smart building has a simple footprint, which reduces the overall building envelope• The less exposure the building has to the elements, the less likely it is to fail, and the more efficient it is at preventing unwanted heat transfer
    • Basic Design• A smart building has a simple footprint, which reduces the overall building envelope• The less exposure the building has to the elements, the less likely it is to fail• From a building code perspective, simple structures minimize heat gain in the summer and heat loss in the winter, resulting in increased performance SUSTAINABLE.TO Willowdale Passive Solar House
    • Passive Strategies• A building is meant to provide a comfortable environment for its inhabitants throughout the seasons.
    • Passive Strategies• A building is meant to provide a comfortable environment for its inhabitants throughout the seasons.• Therefore the building must be heated in the winter, cooled in the summer and well lit all year round.
    • Passive Strategies• A building is meant to provide a comfortable environment for its inhabitants throughout the seasons.• Therefore the building must be heated in the winter, cooled in the summer and well lit all year round.• Properly designed buildings can provide the lion’s share all of these things by harnessing nature’s energy. S.TO’s Off-grid, straw bale, passive solar house
    • Passive Heating Solar Heating Thermal Mass RadiationS.TO’s Off-grid, straw bale, passive S.TO’s Affordable, New Orleanssolar house passive solar house
    • Passive Cooling Passive Ventilation ShadingS.TO’s Affordable, New Orleans S.TO’s Affordable, New Orleanspassive solar house passive solar house
    • Diligent Construction• Once the design and material choices are made, everything must be assembled properly. The building envelope must be airtight to ensure that the design will be as efficient as possible.
    • Diligent Construction• Once the design and material choices are made everything must be assembled properly. The building envelope must be airtight to ensure that the design will be as efficient as possible.• As important as the well known R-Value of a wall, the less discussed “Assembly Effects” such as thermal bridges, thermal mass, and air movement, must be considered and managed effectively.
    • Diligent Construction• Excellent airtightness and optimization of Assembly Effects are both major components of Performance Pathway Compliance.
    • Sustainable Results by sustainable.TO
    • Sustainable Housing Daniel’s Residence
    • Sustainable Housing Daniel’s Residence
    • Sustainable Housing Daniel’s Residence
    • Sustainable HousingWillowdale Passive Solar House
    • Sustainable HousingWillowdale Passive Solar House
    • Sustainable Housing Hunter House
    • Sustainable Housing Hunter House
    • Thank You