Agenda. Scope. Market and code. Impact to Buildings. Design Solution. Future. page 2

Transcription

1 page 1

2 Agenda Scope Market and code Impact to Buildings Design Solution Future page 2

3 Who Uniting the house of Design with the field of Construction Design Products Installation 3

4 Why page 4

5 Why Lead, don t just follow World needs it Canada can become the best at this in the world page 5

6 What Thermal bridging Exterior opaque walls Ventilated Facades using panels ICI building market page 6

7 What Energy Usage Buildings Energy Loss in Buildings Walls page 7

8 DEMAND SUPPLY page 8

9 Why Architect: MCL page 9

10 Why Source: Morrison Hershfield page 10

11 Why page 11

12 Sources to support ASHRAE RP R s don t make your U Mark Lawton Morrison Hershfield ASHRAE 90.1 NECB 2011 Many other we did not invent this page 12

13 Why Architect: WZMH page 13

14 Zinc ACP ACP FRC & GFRC Stone veneer Panels Phenolic Ceramic Porcelain page 14

15 Why Ventilated RVRS Façades

16 A little deeper page 16

17 Definitions U Value thermal conductance R Value thermal resistance Nominal R Value thermal resistance where only insulation Typically one point in wall No accounting for thermal bridges Effective R Value Total wall performance Input for total building performance Accounts for thermal bridges page 17

18 Steel through insulation Short circuit or leak; need to view in 3D Steel 1000 times U Value (conductance) Energy loss from warm side, not just studs page 18

19 You think it matters Survey results 82% of survey see thermal bridging as Very Important So important I m digging into it myself Important but delegated to others Following building code minimums Clients want it page 19

20 Effective R Value Targets of most recent projects page 20

21 How did we get here? page 21

22 Shaping Tomorrow s Built Environment Today NECB 2011 page 22

23 ASHRAE 90.1 page 23

24 What EFFECTIVE R Value do you need? page 24

25 Sources of Thermal Bridging Metal substructure in cladding Window and door frames Parapets Slab edges page 25

26 Old Ways Won t Do Nominal R Value = 16 Effective R Value = 10.2 Worse the more insulation is required page 26

27 Old Ways Won t Do Source Morrison Hershfield page 27

28 Old Ways Won t Do Target Effective R Value Continuous Vertical Girts Continuous Cross Girts Wrige table Horizontal Girts 21 (3.70) 11.1(1.96) 13.5(2.38) 15.4(2.71) Imperial (Metric) 52% 64% 73% Source: Morrison Hershfield - page May 28 7, 2015 May 7, 2015

29 page 29

30 NECB 2011 Effective R Value range from R (RSI ) page 30

31 Status of Code Ontario. ASHRAE 90.1 is code SB10 and 12 BC. ASHRAE or NEBC City of Vancouver. ASHRAE %, New Brunswick and Nova Scotia; NECB 2011 in 2015 Alberta talking Quebec: residential code NBC: not sure International Construction Code; ASHRAE 90.1 in code Source: Morrison Hershfield page 31

32 SB 10 page 32

33 Modelling Are we asking the right questions? Facts needed, not just goals of project Assemblies are understood but not used Factor inefficiencies of construction eg air leakage, fasteners Thermal bridges must be accounted for page 33

34 SB 10 holes page 34

35 Impact to buildings page 35

36 Systems Thinking Effectively Continuous Insulation Save Energy Better thermal performance Strong light substructures create fewer bridges Lighter cladding needs less structure Reduce thermal bridges page 36

37 What matters with Thermally Broken Façade Solutions System Design Freedom = Cost effective Non combustible Suited for Ventilated facade Works w All Insulations Design freedom = clips free to be anywhere so Architect can create with no limits from substructure page 37

38 Impact Thicker walls 4 minimum Adjustability for misaligned studs available Flexibility for shapes of walls Design freedom either same or less watch this issue Continuous AVB possible Continuous weather barrier possible page 38

39 page 39

40 page 40

41 SOURCE: WEB page 41

42 page 42 Source Cascadia

43 Source TAC Clip page 43

44 Source: Morrison Hershfield page 44

45 Executive Summary The Engineered Assemblies Thermal Clip System is an aluminum thermal clip system for attaching rain-screen cladding systems for steel stud wall assemblies with exterior insulation. Morrison Hershfield was contracted by Engineered Assemblies Inc. (E.A.I) to model the system in order to provide thermal performance values. The system is comprised of aluminum clips connected to horizontal and vertical sub-girts that support rain-screen panel cladding. The clips are attached to a steel stud back-up wall. Thermal breaks are provided at the connection between the sub-girt and clips via a cork/neoprene pad and between the clips and exterior sheathing via an aerogel insulation pad. See Figure 1 for a simplified rendering. Source: Morrison Hershfield page 45

46 TClip Performance Engineering Complete Meets the prescriptive requirements for non- residential steel stud walls in ASHRAE /2010 for all climate zones. Performance of the system is validated through Modeling and the Finite Element Analysis (FEA) Designed for Mid- and High-Rise (Non-Combustible) building envelopes Engineered to accommodate Façade panels generally 8-26mm in thickness Engineered for wind loads up to 50psf Optimized vertical spacing 900mm up to 1200mm apart page 46

47 Model holds for all insulations thermal resistance is independent of - Thickness of insulation - Type of insulation So pick the best insulation you can afford, and TClip provides you the ASHRAE 90.1 and highest effective solution page 47

48 How Many Do I need TClip on each stud (400mm o.c.) 1200mm vertical dimension page 48

49 Design Freedom page 49

50 page 50

51 page 51

52 page 52

53 Johann-Sebastian-Bach hall, castle in Köthen, Busmann + Haberer architects, Berlin

54 Knox Church Baird Sampson Neuert page 54

55 Location of this Independent of This page 55

56 Design page 56

57 The Old Standard Horizontal Girt page 57

58 The New Standard Adjustable Horizontal Girt TClip Thermal Breaks page 58

59 T150 Three Clear Field Dimensions - Adjustable for wall alignment T125 T100 page 59

60 Breather Membrane Dry! 1. Secondary drainage plane 2. Insulation performs better 3. Vapour escapes 4. Not visible 5. UV resistant

61 page 61

62 page 62

63 page 63

64 Plan View page 64

65 Plan View Wide Hat Bar page 65

66 page 66

67 page 67

68 Window Jamb page 68

69 Source Marine Cladding page 69

70 page 70

71 page 71

72 page 72

73 Outside Corner page 73

74 Macklin School - Toronto - TClip - Subset of project details page 74

75 Macklin School - Toronto - TClip - Subset of project details page 75

76 Constructability Adjustability Vertical girt independence Window detailing simple page 76

77 Adjustability a big consideration Quotes from contractors 3.5 difference across a four storey wall based on slab edge locations typical Old way adjustable bars 2 x as many bars Labour expensive Too many things to adjust Insulation hard to install New way adjustability in clip 130 linear feet of bars per person per day Tools available for easy alignment Installation steps are separate 1. Install Clips 2. Find level plane 3. Install Horizontals to level plane 4. Insulate and membrane 5. Verticals 6. Panel page 77

78 Speed of construction Different steps mean different crews with repeatable processes Fast alignment means resolving wall easy Difficult to fail ; easy to fix page 78

79 Traditional system** Horiz bars 3 o.c. Vertical bars 2 o.c. 1.3 Crew hours / 100 sq ft TcLip system TcLip on each stud Horiz bars 4 o.c. Vertical bars 2 o.c. 2.0 Crew hours / 100 sq ft Adjustable system Adj. Horiz bars 3 o.c. Vertical bars 2 o.c. 3.7 Crew hours / 100 sq ft $1.2/sq ft premium Material + Labour 5000 sq ft job = $6k premium $3.0/sq ft premium Material + Labour 5000 sq ft job = $15k premium **Traditional systems had much less insulation too, so difficult to do apples to apples page 79

80 page 80

81 UBC report good third party analysis page 81

82 Future Fewer clips ; skip studs New designs Other things on outside Stone veneers Solar panels Communication equipment page 82

83 Spray foam deep cavity solution page 83

84 page 84 WZMH Architects

85 Hilditch Architects page 85

86 page 86 Perkins Will

87 What matters with Thermally Broken Façade Solutions System Design Freedom = Cost effective Non combustible Suited for Ventilated facade Works w All Insulations Design freedom = clips free to be anywhere so Architect can create with no limits from substructure page 87

88 Summary Building energy use matters Walls matter Thermal bridges matter ASHRAE has documented and it matters Code is setting higher minimums Constructable solutions exist Detailing constructable Cost effective design freedom exist So up to you. page 88

89 EA has all the info for you Youtube Installation Animation Design Guide MH full report LnL Preso page 89

90 Booth 1040 page 90