Build Boston 2011 Green That Means Something

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Do all those green rating points you’ve earned actually have an impact? Get tools to evaluate whether your projects are part of the solution to environmental degradation and resource depletion, or whether they continue to be part of the problem. Presented at Build Boston with Jonathan Kantar of Sage Builders, LLP.

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Build Boston 2011 Green That Means Something

  1. 1. GREEN  THAT  MEANS  SOMETHING  Thursday  November  17th,  10:30  AM  –  NOON       Rachel  White,  principal   Jonathan  Kantar,  principal     Greener  Every  Day,  Newton,  MA   Sage  Builders  LLP,  Newton,  MA   rachel@greenereverydayconsulEng.com   jonathan@sagebuilders.com   617.905.6925   617.965.5272    11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   1  
  2. 2. Take  Away  Points  •  Incorporate  a  goals-­‐oriented  approach  to   “green”  building  into  your  business  •  UElize  a  wide  variety  of  tools  and  resources  to   advance  sustainability  objecEves  before,   during  and  aWer  construcEon  •  Track  and  assess  the  effecEveness  of  your   efforts  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   2  
  3. 3. Session  Roadmap  •  The  context  and  the  challenge  •  “Green”  goals  for  our  homes  •  Tools  to  help  us  achieve  these  goals  •  Case  Studies      11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   3  
  4. 4. DOE  Bldg.  Data  Book,  2010,  Ch.  1   •     2008:  US  used  99.5  quadrillion  Btus  (quads)  of  energy  –  more  than  any  other   country   •     40%  primary  US  energy  consumed  in  building  sector,  54%  by  US  homes   •     76%  of  consumed  energy  came  from  fossil  fuels    11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   4  
  5. 5. Overall  energy  use  has  remained  relaEvely  stable  over  the  past  27  years,   but  efficiency  in  space  heaEng  have  been  offset  by  increases  in  other  uses.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   5  
  6. 6. New  houses  are  more  efficient,  but  likely  bigger  so  they  are   using  as  much  or  more  energy  than  all  but  the  oldest  homes  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   6  
  7. 7. Will  we  be  part  of  the  problem  or  contribute  to  the  soluEon?   11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   7  
  8. 8. Part  of  the  problem…be  careful  with   spray  foam,  it  may  look  good,  but  it  may   not  be  complete  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   8  
  9. 9. Air  infiltraEon  at  kitchen   counter,  exterior  wall   inside  corner   air  infiltraEon  from   exterior  wall-­‐floor-­‐wall   below  kitchen  cabinets  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   9  
  10. 10. Another  Missed  Opportunity   •  1800  v.  2400  square  feet   •  Even  more  complex  geometry!   •  ParEally,  poorly  finished  basement  leW  as  is  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   10  
  11. 11. Source:  Auckland  City  Council,  New  Zealand   Cited  in  Nigel  Pickering  “Engineered  Impacts  to  the  Natural  Water  Cycle”   Available  for  download  at  hmp://crwa.org  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   11  
  12. 12. 11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   12  
  13. 13. Indoor  Air  Quality  &     Occupant  Health  Risks    •  4.6  million  (20%  of  total)  cases  of  asthma   amributable  to  dampness  &  mold  in  the  home   “Public  Health  &  Economic  Impact  of  Dampness  and  Mold,”  Indoor  Air  Journal,  vol  17,  2007  •  11-­‐21%  increased  risk  of  lung  cancer  due  to   radon  exposure  at  3  piC/l  over  5-­‐30  years.   hmp://www.epa.gov/radon/healthrisks.html  •  Average  concentraEon  of  formaldehyde  in  a   US  home  is  55  ppb:  2½  x  CA  EPA  cancer  risk   threshold   hmp://eetd.lbl.gov/ied/sfrb/voc-­‐cancer.html    11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   13  
  14. 14. Where  Do  You  Stand?  •  How  much  energy  does  your  house  use?  •  What  is  the  level  of  radon  in  your  house?    •  Do  you  have  a  humidity  issue  at  your  house?  •  How  much  water  do  you  use?  •  What  is  the  minimum  amount  of  electricity  you   could  live  on?  •  Do  you  design  to  meet  an  energy  or  water  budget?  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   14  
  15. 15. A  Historic  Opportunity  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   15  
  16. 16. Which  road  do  I  take?  asked  Alice.     "Where  do  you  want  to  go? replied  the  cat.     "I  dont  know,"  Alice  answered.     "Then,  said  the  cat,   It  doesnt  mamer.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   16  
  17. 17. Goals  for  Our  Homes   •  OpImize  use  of  space   –  Avoid  addiEons  whenever  possible   –  Full  funcEonality  (no  unused  rooms)   •  Keep  water  where  it  belongs  &  use  only  what  we  need   –  Allow  for  onsite  storm  water  infiltraEon   –  Eliminate  potable  water  for  irrigaEon   –  36  gpcd  indoor  consumpEon  (MA  Avg.  is  about  55  gpcd…)   •  Reduce  greenhouse  gas  emissions  by  80%   –  InsulaEon  (R-­‐5,  10,  20,  40,  60)  &  air  sealing  (<2.0  ach  @50  Pa)   –  Energy  efficient  electric  heat  pump  for  heaEng  &  cooling   –  Onsite  PV  (if  site  appropriate)   •  Provide  good  indoor  air  quality     –  VenElaEon  that  meets  ASRHRAE  62.2  [.01cfm  x  sf  +  7.5cfm  x  (#br+1)]   –  Source  Control   –  Balance  venElaEon  is  preferred   •  Maximize  longevity   –  100+  year  lifespan,  40+  years  for  a  kitchen,  20+  years  for  a  paint  job  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   17  
  18. 18. Where  Are  We  StarEng  From?  •  Energy  bills  •  Water  bills  •  ExisEng  (honest)  condiEons  assessment   –  Walk  through  and  take  pictures     –  Client  quesEonnaire  and/or  interviews  –  invesEgate  issues   –  TesEng  (examples:  radon,  blower  door,  mold)  •  Review  ExisEng  documentaEon   –  Plans  from  previous  renovaEons   –  Surveys   –  Home  inspecEon  report  •  Document,  document,  document  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   18  
  19. 19. 11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   19  
  20. 20. Codes,  RaEng  Systems,  and  building  guides  can  help  us  establish  goals;  your   own  house  is  a  good  place  to  start…to  get  context  and  to  see  how  far  we   need  to  go  (for  most  of  us).  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   20  
  21. 21. A  House  That  “Breathes”    -­‐-­‐  This  is  NOT  a  Healthy  House!  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   21  
  22. 22. Energy  modeling  guides  like  HERS  and  the   US  DOE’s  new  Energy  Smart  Home  Scale   can  help  evaluate  the  relaEve     effecEveness  of  various  measures.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   22  
  23. 23. If  we  want  field  workers  to  get  it  right,   we  need  to  give  them  clear  and  well   thought  out  designs  and  details  with   coordinated  materials.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   23  
  24. 24. The  Blower  Door  –  the  only  way  to  assure  a  quality  air  sealing  job.    Period.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   24  
  25. 25. A  fog  machine  helps  find  the  “holes”.  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   25  
  26. 26. TOOLS:   temp.  and  relaEve  humidity  loggers   CO2  monitor  NSTAR  Smart  Energy  Pilot     infrared   Web-­‐based  energy  monitoring  and  analysis   11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   26  
  27. 27. Consider  Using  Checklists   SchemaEc     Feasibility     Client  Goals   Design   Budget   Feedback   Engineering/   Design   Detailed   Client   Trades   Development   Budget   Feedback   Check  In  Points   ConstrucEon   Documents     Contract   •  Baseline   •  Space  Plan   Build     Commission   •  Design  Development   •  ProducEon   Tracking  &   •  OperaEons   Follow-­‐up   •  Performance   11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   27  
  28. 28. Upstairs  As-­‐Built   Kid’s  BR   Master  BR   •  Can  we  meet  occupant  needs   without  adding  on?   Kid’s  BR   •  Will  the  design  result  in  “vacaEng”   exisEng  space?   •  Is  the  design  flexible  and   adaptable  to  changing  needs  &   aging  in  place?  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   28  
  29. 29. Baseline  HERS  &  What  Ifs   WhiteWhat Ifs - 11/17/2008 Baseline Baseline Delta Total Delta Improvement HERS HERS MMBTU/Yr MMBTU/Yr Baseline 117   0   185.3   0.0   Replace all old AGWall Windows w/Dbl LowE 114   3   183.5   1.8   95 AFUE boiler w/Indirect Tank 101   16   169.1   16.2   4160 CFM50 to 3500 CFM50 113   4   178.6   6.7   Six Evergreen SL 195s 20% shading 112   5   181.0   4.3                   Window, Boiler Together 98   19   167.4   17.9   Window, Boiler, Air Infiltration Together 96   21   161.3   24.0   Window, Boiler, Air Infiltration PV Together 91   26   157.0   28.3  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   29  
  30. 30. SchemaEc  Design  Plan  by  Molly  Frey,  Molly  Frey  Design   11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   30  
  31. 31. Post-­‐project  HERS  RaEng   WhiteWhat Ifs - 9/27/2009 - 10/5/2009 Baseline Total Baseline Delta Consumption Delta Improvement HERS HERS MMBTU/Yr MMBTU/Yr Baseline 117   0   185.3   0.0   S1 - Mbed Cath Ceil R30 FG to R42 ocSPF 116   1   183.7   1.6   S2 - Mbed AGWalls R13,FG3 to R19,LDF1,X-16 114   3   182.1   3.2   S3 - Rim - 54 SF, from R0 to R30/ 9” ocsf. 114   3   180.4   4.9   S4 - Porch Floor 2x8 to LDF + 1" rigid R25,8-16,+6 112   5   177.2   8.1   S5 - Bay window ceiling R0 to R25,8-16 111   6   175.9   9.4   From S5 Above on October 3, 2009 110   7   172.4   12.9   S6 - Attic reconfiguration to roof plane                 See top of Kerrys Email in this comment                 S7 - 4160 CFM50 to 2900 CFM50 - October 5 103   14   159.7   25.6   95  AFUE  Boiler  w/  indirect  tank   87   30   143.5   41.8  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   31  
  32. 32. Outdoor  Water  Management   •  Can  storm  water  be  captured  and   infiltrated  on  site?     •  Is  preference  given  to  naEve  plants   with  minimal  irrigaEon  needs?   •  Is  an  EPA  Water  Sense  partner  handling   irrigaEon?    11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   32  
  33. 33. Plumbing  Fixtures   •  Do  fixtures  meet  or  exceed  EPA  Water   Sense  standards?  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   33  
  34. 34. HVAC   •  Can  we  meet  cooling  needs  without  air   condiEoning?     •  Can  we  improve  performance  of  exisEng   AC?  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   34  
  35. 35. My  Home’s  Annual  Electricity  ConsumpIon   16000   14000   Electricity  ConsumpIon  kwh   12000   10000   8000   6000   4000   2000   0   2006   2009   2010   2011   projected  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   35  
  36. 36. Electricity  Monitoring  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   36  
  37. 37. The  Carriage  House  –  High  Performance  Efforts  2008   Summary  of  HP  StaEsEcs   RestoraIon  of  1910  carriage  house   into  1,000  sf  lo_  sudio  apartment   Tried  to  salvage  exterior  stucco   walls  and  frame  of  structure  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   37  
  38. 38. Dean  Rd.,  Brookline  –  High  Performance  Photos  2008  •  Before:   –  No  insulaEon  or  air   sealing   –  HERS  149   –  >11,500  CFM  50   A"er:   •  significant  insulaEon  and  air   sealing   •  HERS  51!  –      2,600  CFM  50   •  projected  energy  decrease   from  300MMBtu  to  90  (heat)  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   38  
  39. 39. The  Carriage  House  –  High  Performance  Efforts  2008   Is  bigger  really  becer?       •   Dean  Rd.:  +/-­‐  90  MMBtus  heaIng   •   Carriage  House:  +/-­‐  12.5  MMBtus  heaIng   •   Jonathan’s  house:    146  MMBtus  heaIng   •   must  measure  –  before,  during,  a_er  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   39  
  40. 40. Mike  Duclos  helped  us  understand  the  relaEve  impacts  of  various  improvement  opEons  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   40  
  41. 41. Take  Away  Points  •  Incorporate  a  goals-­‐oriented  approach  to   “green”  building  into  your  business  •  UElize  a  wide  variety  of  tools  and  resources  to   advance  sustainability  objecEves  before,   during  and  aWer  construcEon  •  Track  and  assess  the  effecEveness  of  your   efforts  11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   41  
  42. 42. “Green”  that  means  something   Thursday  November  17th,  10:30  AM  –  NOON      Rachel  White,  principal   Jonathan  Kantar,  principal    Greener  Every  Day,  Newton,  MA   Sage  Builders  LLP,  Newton,  MA  hmp://greenereverydayconsulEng.com   hmp://sagebuilders.com    rachel@greenereverydayconsulEng.com   jonathan@sagebuilders.com  617.905.6925   617.965.5272    11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   42  
  43. 43. Dean  Rd.,  Brookline  –  High  Performance  Photos  2008   Once  the  building  envelop  is  water  and  air  Eght  and  thermally   protected,  Sage  focuses  on  the  HVAC    Five  (5)  hydro-­‐aire  units  are  heated  with  a  98%  efficient  direct  vent,  fully  modulaAng  and  condensing  gas  boiler.    Outdoor  reset  control  ensures  opAmal  boiler  water  temperatures  for  efficient  heaAng      The  system  includes  minimal  pumping  to  save  electricity.    A  heat  exchanger  on  the  return  boiler  water  loop  pre-­‐heats  domesAc  potable  water  and  increases  the  condensing  funcAon  of  the  boiler  for  greater  operaAng  efficiencies.     11/28/11   Sage  Builders,  LLP  -­‐  Greener  Every  Day   43  
  44. 44. Indoor  ResidenEal  Water  Use   Water  Use  Scenarios     80   70   60   Gallons   50  Per  Capita   40   Day   30   20   10   0   US  Average   MA  Average   ConservaEon   ConservaEon   (2001)   (2005)   Source:  MA  Water  ConservaEon  Standards  
  45. 45. Fixtures  &  Appliances  Fixture   Federal  Standard   Water  Sense/Energy  Star  Toilet   1.6  gpf   1.28  gpf  Shower   2.5  gpf   2  gpm  Faucet   2.5  gpf   1.5  gpm  Dishwasher   5.8  gpc   4.5  gpc  Washing   WF<9.5   WF<6  Machine  TOTAL   69.3  GPCD   36.2  GPCD   The  difference  between  the  federal   standard  &  most  efficient?   12,081.5  gallons  per  person  per  year  
  46. 46. ResidenEal  Seasonal  Water  Use   Seasonal  Use  Scenarios   120   100   80  Gallons  per   60  Capita  Day   40   20   0   US  Average   MA  Average   ConservaEon   ConservaEon   2001   2005  
  47. 47. Source  Control    •  Remove/remediate  exisEng  contaminants   –  Asbestos,  lead,  radon,  mold,  combusEon  gases  •  Don’t  introduce  new  contaminants     –  Design  to  reduce  occupant  exposure   –  Materials:  low-­‐emi‚ng,  moisture  resistant,   easy  to  clean   –  ConstrucEon  protocols:  dust  protecEon,   flashing  details,  pest  screening,  etc.    •  Occupant  Choices  
  48. 48. EPA  Map  of  Radon  Zones  for  Massachusems   Test  Results  for   Middlesex  County   Red  Zone:   Highest  Predicted  PotenEal  for   Radon  Levels  above  4  piC/l   under  2  pCi/L     between  2  and  3.9  pCi/L   4  pCi/L  and  above  
  49. 49. Culture  of  ConsumpEon  
  50. 50. Source:  US  EIA,  2009  ResidenEal  Energy  ConsumpEon  Survey  

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