Why Building and Energy Codes?

Transcription

1 Why Building and Energy Codes?

2 Consumer Expectations When you purchased your home or commercial building did you have any expectations of how the structure would perform?

3 Many would expect that when It rained the inside would stay dry

4 Many would expect that when It snowed the roof would support the added weight

5 Many would expect that when It was windy the building would stand

6 Many would expect that when You turned on the faucet there was hot water and it was on the left side

7 Many would expect That the drains drain

8 Many would expect that It would be reasonably comfortable

9 Building and Energy Codes Intent: The purpose of any of the International family of codes is to establish minimum requirements to safeguard the public safety, health and general welfare through;

10 Building and Energy Codes Affordability

11 Building and Energy Codes Structural strength

12 Building and Energy Codes means of egress facilities

13 Building and Energy Codes energy conservation

14 Building and Energy Codes stability

15 Building and Energy Codes sanitation

16 Building and Energy Codes light and ventilation

17 Building and Energy Codes safety to life and property from fire and other hazards

18 Living up to the expectation So what are some things that we can be doing to our buildings so that they live up to the expectations of those who buy them?

19 1. Define the Thermal Envelope

20 2. Protect the Thermal Envelope

21 Air Barriers

22 Air Leakage The following shall be caulked, gasketed, weather-stripped or otherwise sealed with an air barrier material, suitable film or solid material:

23 #1 All joints, seams and penetrations. WB Colorado Code Consulting, LLC LC 23

24 #1 All joints, seams and penetrations. WB Colorado Code Consulting, LLC LC 24

25 #2 Site-built windows, doors or skylights WB Colorado Code Consulting, LLC 25

26 #2 Site-built windows, doors or skylights WB Colorado Code Consulting, LLC 26

27 #3. Openings between window and door assemblies and their respective jambs and framing. WB Colorado Code Consulting, LLC 27

28 #3 Openings between window and door assemblies and their respective jambs and framing. WB Colorado Code Consulting, LLC 28

29 From Building Science Corp Colorado Code Consulting, LLC 29

30 #4 Utility penetrations. WB Colorado Code Consulting, LLC 30

31 #5 Dropped ceilings or chases adjacent to the thermal envelope WB Colorado Code Consulting, LLC 31

32 #6 Knee Walls WB Colorado Code Consulting, LLC 32

33 #7 Walls and ceilings separating a garage from a conditioned spaces. WB Colorado Code Consulting, LLC 33

34 #7 Walls and ceilings separating a garage from a conditioned spaces. WB Colorado Code Consulting, LLC 34

35 #8 Behind tubs and showers on exterior walls WB Colorado Code Consulting, LLC 35

36 #8 Behind tubs and showers on exterior walls WB Colorado Code Consulting, LLC 36

37 #9 Common walls between dwelling units WB Colorado Code Consulting, LLC 37

38 The Problem 38

39 #10 Attic access openings Courtesy of US Department of Energy WB Colorado Code Consulting, LLC 39

40 #11 Rim joist junction BuildingsScience.com WB Colorado Code Consulting, LLC 40

41 #12 Other sources of infiltration WB Colorado Code Consulting, LLC 41

42 Glazing

43 Ceiling Insulation 2009 Colorado Code Consulting, LLC 43

44 Ceiling/Roof Insulation

45 Ceiling Insulation 2009 Colorado Code Consulting, LLC 45

46 Ceiling Insulation 2009 Colorado Code Consulting, LLC 46

47 Roof Assemblies - Metal Buildings Example: Climate Zones 6 requires two layers of insulation (R-13 + R-19) Per Table 502.2(1) Per Table 502.2(2): R-13 faced fiberglass batts draped over purlins. R-19 unfaced fiberglass batts installed parallel to the purlins. Minimum R-3.5 thermal spacer block placed above the purlin/batt, and roof deck is secured to purlins. Thermal Blocks Insulation Parallel to Purlin Insulation Draped Over Purlin Picture from NAIMA 2011 Colorado Code Consulting, LLC 47

48 Roof/Ceiling Insulation 2009 Colorado Code Consulting, LLC 48

49 Roof/Ceiling Insulation 2009 Colorado Code Consulting, LLC 49

50 Roof/Ceiling Insulation 2009 Colorado Code Consulting, LLC 50

51 Wall Insulation

52 Wall Insulation

53 OOPS! Wall Insulation

54 Above Grade Walls 2009 Colorado Code Consulting, LLC 54

55 Above Grade Walls 2009 Colorado Code Consulting, LLC 55

56 Floor Insulation Floor insulation shall be installed to maintain permanent contact with the underside of the subfloor decking.

57 Floors Over Outside Air

58 Slab on Grade Foundations NO

59 Slab Edge Protection

60 Basements

61 Vented Crawl Spaces

62 Unvented Crawl Spaces

63 Attics

64 Garages

65 2. Size the mechanical equipment properly

66 Residential Mechanical Houses are tighter than they used to be Insulation is better than it used to be Windows are better than they used to be It becomes more important to put more thought into the size of equipment needed for a home. The old Rule of Thumb just doesn t cut it anymore.

67 Commercial Mechanical Control Issues : Commercial mechanical equipment should be designed with controls with capabilities to: Turn things down or off when not needed, Have programmable thermostats that allow varied settings and abilities to operate equipment during power failures Reduce outside air when it s not required Provide outside air instead of chilled air when it is economical to do so Sequencing operations on multiple units Reduce pump flows when applicable Change fan speeds when applicable

68 Duct Leakage and Insulation Seal all joints and seams Ducts in unconditioned spaces need insulation!

69 Duct Design You designed your equipment to the way you built your building, now design the ducts to deliver the air appropriately. When you don t feel the right amount of air from your duct work, you turn up the heat or cooling. What you need to do is design the duct work correctly from the beginning.

70 3. Lighting Recessed lighting installed in the building s thermal envelope should be rated to be in contact with insulation (IC rated) And should have seals and gaskets to limit air leakage.

71 Residential Lighting Use high efficacy bulbs in your permanent fixtures.

72 Commercial Lighting More Control Issues : Commercial lighting should be designed to allow the user to turn the lights down by at least 50% when they can. This can be done with dimmer switches, controls that allow you to shut some lamps off and not others, or occupancy sensors Also, controls should be provided to allow for holiday scheduling and after hour shutoffs. Always have at least one control for the lighting in each room the lighting serves. Don t make me go into another room to turn the lights on for the room I need to be in. Exterior lighting should have controls that shut it off when it s light enough outside that you don t need it And then put some thought into which occupancies need more wattage than others and design appropriately.

73 Pools If you heat your pool To over 90 degrees, it Should have an insulated cover 2009 Colorado Code Consulting, LLC 73

74 Flexibility and Options ResCheck/ComCheck Performance Path ASHRAE 90.1

75 Free Adoption Assistance Need help with code adoption? Have questions about code adoption? Want someone to talk to your City Council? Want someone to attend public meetings to answer questions? Give us a call, we can help for FREE! Shaunna Mozingo, (303)

76 Thank you!! Energy Code Support Partnership Brought to you by: Colorado Governor s Energy Office Department of Local Affairs, Div. of Housing Colorado Code Consulting International Code Council Energy Logic