Affordable Green Basics and Selected Lessons Learned

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Affordable Green Basics and SelectedLessons
Learned

• Christine Bruncati, R.A.
• New Jersey Institute of Technology
• Center for Architecture and Building Science
  Research

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Affordable Green

• Use an integrated design process
• Make it energy efficient
• Make it durable
• Plan for improved indoor air quality
• Make it resource efficient
• Use environmentally responsible materials
• Follow through in the field
• Educate residents

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Energy Basics

• Reduce loads FIRST
• Orient for passive solar heating/cooling
• Provide a well insulated envelope
• Build tight ventilate right
• Next, meet loads efficiently
• Use efficient properly sized systems
• THEN meet loads renewably

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Building Orientation

• Long axis
• east-west
• Shade from high summer sun
• Admit low winter sun

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Building Envelope

• Insulation money well spent
• Minimize thermal bridging
• steel framing ORNL study steel stud wall with
  R-11 batts, whole wall R-6.1
• slab edges
• masonry
• metal window and door frames
• Air sealing if its not tight, its not energy
  efficient
• Energy Star windows
• (energystar.gov, nfrc.org)

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Lighting, Appliances Equipment

• Energy Star lighting and appliances
• Energy Star or high efficiency HVAC, properly
  sized
• Manual J for residential loads
• ASHRAE or manufacturers software for
  commercial loads

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Durable

• Use durable materials
• Air sealing
• Control water
• Rainwater control
• Groundwater control
• Pluming
• From Read This Before
• You Design Build or Renovate
• http//www.eere.energy.gov/buildings/building_amer
  ica/pdfs/db/32114.pdf

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IAQ

• Source control
• Low offgassing materials
• Air sealing
• Moisture control and material selection in wet
  areas i.e. use cement board, not green board
• Ventilation
• Designed and controlled

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Resource Efficiency

• Reduce materials used
• OVE framing, panelized construction
• Designing on 2 grid
• Recycle or salvage CD debris
• Use durable materials

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Builders Guides www.eeba.org
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Lessons Learned

• Missed insulation
• Tub/shower installed before insulation - and
  often on outside wall.

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Lessons Learned

• Air sealing
• Visual inspections often
• Blower door test while you can still correct
  problems

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Lessons Learned

• Ventilation Systems
• Specify rigid duct
• Verify fans are working

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Lessons Learned

• Vegetated swales for stormwater management
• No heavy equipment or materials on vegetated
  swales
• If soils are compacted infiltration wont occur
• Diligence in the field is key

High Point Seattle, WA
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Lessons Learned

• Linoleum flooring
• Tile linoleum has a grain, rotate each tile 90
  or you can get buckling.
• PET carpet
• Investigate warrantee and wear issues. Some are
  less durable than others.

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Lessons Learned

• Passive Solar Design
• Residents can undermine design intent if not
  engaged in process

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Lessons Learned

• Hold a preconstruction meeting
• Everyone that will actually be building the
  project should attend
• Review the goals objective and accountability
  measures.

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Affordable Green Case Studieswww.designadvisor.or
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