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Bryn davidson - Lanefab Design Build - wood_talks2019

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"From Laneway House to Passive House to Net Positive"

With many nations declaring 'climate emergencies' it's clear that we need to aggressively target the greenhouse emissions coming from our buildings and cities, but - to do that - we need to go beyond our current approach to 'green building' and instead shift our thinking to a target of 'Net Positive' impact.

This presentation will frame an approach to net-positive development that unfolds from a decade's worth of experience with infill housing and passive house projects.

Four learning objectives:

1. Defining 'Net Positive' in comparison to the Passive House standard, 'Net Zero', 'Energy Positive' and other green building benchmarks

2. Understand how site history and location contribute to the net GHG impacts of a development project

3. Understand how upfront emissions and operating emissions can be minimized with wood frame passive house projects.

4. Become familiar with Lanefab's "Net Positive Lens"; a framework through which we can critique the climate impact development projects

Published in: Design
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Bryn davidson - Lanefab Design Build - wood_talks2019

  1. 1. Bryn Davidson B.Eng. M.Arch. LEED-AP CPHD September 2019 From Laneway House …to Passive House …to Net Positive Projects
  2. 2. Missing Pieces Laneway Houses Passive House The Net Positive Lens Where to go from here?
  3. 3. Missing Pieces Laneway Houses Passive House The Net Positive Lens Where to go from here?
  4. 4. The Mendoza Lane House, 710sf (Vancouver’s 1st Laneway House) Vancouver BC Mendoza Lane House Vancouver’s 1st ‘Laneway House’ 2010 (710 sf)
  5. 5. The Mendoza Lane House, 710sf (Vancouver’s 1st Laneway House) Vancouver BC
  6. 6. The Mendoza Lane House, 710sf (Vancouver’s 1st Laneway House) Vancouver BC
  7. 7. The Mendoza Lane House, 710sf (Vancouver’s 1st Laneway House) Vancouver BC – First open house, May 2010
  8. 8. Two Birds Lane House, 940sf Vancouver BC
  9. 9. Worthington Dr. Lane House, 720sf
  10. 10. 19th and Slocan Lane House, 680sf Vancouver BC
  11. 11. Commercial St. Lane House Vancouver BC
  12. 12. Venables Lane House Vancouver BC
  13. 13. Solar Lane Houses
  14. 14. The E.57th Solar Lane House
  15. 15. The E.29th Solar Lane House
  16. 16. Dumfries Solar Lane House, 1050sf Vancouver BC
  17. 17. The W.14th Solar Lane House, 650sf
  18. 18. Design + Build
  19. 19. Yew St. ‘Two Birds’ Lane House – 940sf
  20. 20. Lanefab R35 Hybrid Wall : SIPs + Service Wall + 3x Glazed Windows = 13” Thick
  21. 21. Structural Insulated Panels Insulspan, Delta BC
  22. 22. The Mendoza Lane House, 710sf (Vancouver’s 1st Laneway House) Vancouver BC
  23. 23. Centre Mount Triple Glazed Windows
  24. 24. Centre Mount Triple Glazed Windows #thickwallsaresexy
  25. 25. Building ‘Fabric’‘Green Bling’ $
  26. 26. Building ‘Fabric’‘Green Bling’ $ • Solar Panels • Rainwater Tanks • Heat Pumps
  27. 27. Building ‘Fabric’‘Green Bling’ $ • Solar Panels • Rainwater Tanks • Heat Pumps • Thick walls / insulation • Air tightness • No thermal bridging • Low Carbon Materials
  28. 28. Passive House Photo: SchwörerHaus KG ‘Net-Zero’ Photo: Natural Building Technology $
  29. 29. Missing Pieces Laneway Houses Passive House The Net Positive Lens Where to go from here?
  30. 30. E.5th ‘Almost Passive’ Spec. House, Vancouver BC
  31. 31. E.5th ‘Almost Passive’ Spec. House, Vancouver BC
  32. 32. E.37th Passive House, 2800sf Open House this Saturday, Sept 14: Vancouver Modern Homes Tour
  33. 33. Passive House 101: • Lots of insulation R56 Wall R90 Roof
  34. 34. Passive House 101: • Lots of insulation • Super Airtight (No draughts, ACH < 0.6)
  35. 35. Passive House 101: • Lots of insulation • Super Airtight (No draughts) • Excellent windows & doors
  36. 36. Passive House 101: • Lots of insulation • Super Airtight (No draughts) • Excellent windows & doors • No cold spots (thermal bridging) Lanefab door threshold thermal bridge analysis (Flixo)
  37. 37. Passive House 101: • Lots of insulation • Super Airtight (No draughts) • Excellent windows & doors • No cold spots (thermal bridging) • Ventilation with Heat Recovery Photo: Uphillhouse.com
  38. 38. Under construction: Passive Houses (orange), laneway houses (blue)
  39. 39. <Zoom Out>
  40. 40. Passive House Photo: SchwörerHaus KG ‘Net-Zero’ Photo: Natural Building Technology $
  41. 41. Performance
  42. 42. Performance Lessons
  43. 43. 1970 TodayGHG emissions connected to buildings
  44. 44. 1970 Today 2050 Code Minimum GHG emissions connected to buildings
  45. 45. 1970 Today ‘Green’ 2050 GHG emissions connected to buildings
  46. 46. 1970 Today Or “Net-Zero” 2050 GHG emissions connected to buildings
  47. 47. 1970 Today Where we actually need to go… 2050 GHG emissions connected to buildings
  48. 48. ?
  49. 49. Net Positive: Beyond net-zero, projects that make the world measurably better…
  50. 50. Missing Pieces Laneway Houses Passive House Net Positive Projects Where to go from here?
  51. 51. Source: 2007 RMI GreenHome Visitor’s Guide
  52. 52. ? Photos: Rocky Mountain Institute
  53. 53. Photos: Rocky Moutain Institute, Thomas Crenshaw
  54. 54. GHGs from this green building Photo: 2007 RMI GreenHome Visitor’s Guide
  55. 55. GHGs from this green building Photo: 2007 RMI GreenHome Visitor’s Guide Up-front (Embodied) Carbon Operational Carbon
  56. 56. GHGs from a ‘typical’ building of the same size GHGs from this green building Photo: 2007 RMI GreenHome Visitor’s Guide
  57. 57. GHGs from this green building + GHGs from transportation Photo: 2007 RMI GreenHome Visitor’s Guide
  58. 58. Photo: Natural Building Technology
  59. 59. Photo: Natural Building Technology
  60. 60. Photo: Natural Building Technology, Map: Walkscore.com <
  61. 61. < Photo: Natural Building Technology, Map: Walkscore.com
  62. 62. Photo: Natural Building Technology, Map: Walkscore.com <
  63. 63. Where is it located? Photo: 2007 RMI GreenHome Visitor’s Guide
  64. 64. ? Photo: 2007 RMI GreenHome Visitor’s Guide
  65. 65. Photo: 2007 RMI GreenHome Visitor’s Guide
  66. 66. Photo: 2007 RMI GreenHome Visitor’s Guide
  67. 67. Photo: 2007 RMI GreenHome Visitor’s Guide
  68. 68. What does it replace? Photo: 2007 RMI GreenHome Visitor’s Guide
  69. 69. The missing pieces of traditional ‘green’ building: • Measures relative performance vs. actual impact • Ignores induced transportation demand • Ignores site history Photo: 2007 RMI GreenHome Visitor’s Guide
  70. 70. $ How ‘good’ is your building? The Net Positive Lens:
  71. 71. $ How ‘good’ is your building? Where is it located? The Net Positive Lens:
  72. 72. $ The Net Positive Lens: How ‘good’ is your building? Where is it located? What does it replace?
  73. 73. $ A ‘very good’ building. In a walk-able location. Replacing (or renovating) an old building. The Net Positive Lens: = A Net Positive Project
  74. 74. $ Low up-front carbon + Low operational carbon Low transport carbon Building Fleet Turnover The Net Positive Lens: = A Net Positive Project
  75. 75. Low up-front carbon + Low operational carbon The Net Positive Lens: = A Net Positive Project Low transport carbon Building Fleet Turnover
  76. 76. Net Positive: Beyond net-zero, projects that make the world measurably better…
  77. 77. Missing Pieces Laneway Houses Passive House Net Positive Projects Where to go from here?
  78. 78. Lovins’ House, Snowmass CO Project by the Aspen Design Group $ Photo: Rocky Mountain Institute, Walkscore.com
  79. 79. $ Karuna House, Newberg OR Project by Holst Arch. / Hammer and Hand
  80. 80. Park Place Passivhaus, Brooklyn Project by Fabrica 718 Photo: Hai Zhang
  81. 81. Park Place Passivhaus, Brooklyn Project by Fabrica 718 Thermal Photo: Sam McAfee Photo: Fabrica718
  82. 82. Park Place Passivhaus, Brooklyn Project by Fabrica 718 Thermal Photo: Sam McAfee Photo: Fabrica718 $
  83. 83. $ North Park Passive House Spec. 6-Plex, Victoria BC Photo: International Passive House Institute
  84. 84. $
  85. 85. Missing Pieces Laneway Houses Passive House Net Positive Projects Where to go from here?
  86. 86. High Density (Walkable) Passive House $
  87. 87. Walkable with Low ‘Up-Front’ Carbon Construction $
  88. 88. City-wide Zoning Update for walkable infill
  89. 89. City-wide Zoning Update for walkable infill + Passive House Incentives
  90. 90. State & Province-wide leadership • Override local zoning • Ramp up building codes • Incentivize early adopters
  91. 91. Passive House 12-plex
  92. 92. Passive House 12-plex Walkable / Transit Accessible
  93. 93. Passive House 12-plex Walkable / Transit Accessible Low Carbon Wood Construction
  94. 94. Passive House 12-plex Walkable / Transit Accessible Low Carbon Wood Construction Replaces two inefficient homes
  95. 95. Passive House 12-plex Walkable / Transit Accessible Low Carbon Wood Construction Replaces two inefficient homes Just a bit of ‘green bling’
  96. 96. Passive House 12-plex Walkable / Transit Accessible Low Carbon Wood Construction Replaces two inefficient homes Just a bit of ‘green bling’ What we need >> ‘Outright’ Zoning City-wide
  97. 97. $
  98. 98. $
  99. 99. Bryn Davidson B.Eng. M.Arch. LEED-AP CPHD bryn@lanefab.com 604.728.0606 Tour the E.37th Passive House! This Saturday, Sept. 14th >> 2019 Vancouver Modern Homes Tour

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