Canadian Apartment Investment Conference Existing Building Conundrum - - PowerPoint PPT Presentation

▶

Jan 20, 2023 264 likes •421 views

Canadian Apartment Investment Conference Existing Building Conundrum September | 2013 Project Expertise & Resources Green Buildings & LEED Building Science Consulting CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

SLIDE 1

Canadian Apartment Investment Conference

Existing Building Conundrum September | 2013

SLIDE 2

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Project Expertise & Resources

Green Buildings & LEED Building Science Consulting

SLIDE 3

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Select Corporate Clients Country-Wide Presence

SLIDE 4

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Select Personal Experience

Architravel.com Niagarafallsmarriott.com Theismaili.org Condoblog.minto.com Urbantoronto.com Normandthegang.wordpress.com

SLIDE 5

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Understanding Thermal Performance

SLIDE 6

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

SLIDE 7

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Energy Efficient Enclosures & SB-10

SLIDE 8

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Enclosure Failure

Energy & Durability

SLIDE 9

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Enclosure Failure

Indoor Environmental Quality

SLIDE 10

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

SB-10 Envelope Values

Zone Comparison

Zone 5 6 7 Assembly Max Assembly U (w/m

2 K)

Min. R-Value Max Assembly

U (w/m

2 K)

Min. R-Value Max Assembly

U (w/m

2 K)

Min. R-Value

Roof (above-deck) 0.22 R-25 ci 0.18 R-30 ci 0.16 R-35 ci Mass Walls 0.45 R-13.3 ci 0.40 R-15.2 ci 0.34 R-20 ci Metal Building 0.30 R-13 + R-13 ci 0.30 R-13 + R-13 ci 0.30 R-13 + R-13 ci Steel Framed 0.31 R-13 + R-10 ci 0.31 R-13 + R-10 ci 0.31 R-13 + R-10 ci Metal framed fenestration (max 40%) 1.99 0.35 Assembly

Max. SHGC

1.99 0.40 SHGC 1.70 0.45 SHGC

ci = continuous insulation (i.e. uninterrupted by framing or other bridging elements Exemption for insulation clips removed from SB-10 2012 requirements (insulation clips must be factored into assembly U-value)

SLIDE 11

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

– 4” brick – 8” block – 1” cork – ½” drywall

Understanding Thermal Value

Assembly Thermal Value Exterior brick masonry R2 – R6 Concrete block 1” Cork insulation Interior finish Assembly Thermal Value Window wall with spandrel panel R4 – R8 (depending on size) Infill insulation Backpan Interior finish SB-10 target for opaque walls: approx. R15 – R19

SLIDE 12

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Window-to-Wall Ratios and Opaque Assembly U-Values

SLIDE 13

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013 Notes:

SB-10 counts spandrel as “steel framed walls” requiring U 0.31 (equivalent to approx. R-18)
Optimal opaque u-values are not achieved with spandrel assemblies
Walls with better (lower) u-values are impacted more by thermal bridging
Lower WWRs benefit from higher solar heat gain
Higher WWRs benefit greatly from lower solar heat gain
Modifying the SHGC can affect total cooling load by 50%

Low High Variance 30% 43,152 53,026 9,874 (23%) 55% 55,586 74,333 18,747 (34%) 90% 53,922 105,670 51,748 (95%) Load ( Wh/m2) Window Wall Ratio

SLIDE 14

CANADIAN APARTMENT INVESTMENT CONFERENCE | SEP 2013

Scott R Armstrong Dipl. Arch. Tech., A.Sc.T., LEED AP BD+C

Manager, Building Science & Sustainability Associate MMM Group Limited 100 Commerce Valley Drive West Thornhill ON L3T 0A1 ArmstrongS@mmm.ca | m: 647.923.9053 | t: 905.882.4211 xt. 6864 | www.mmm.ca