Stantec Engineering: Green Building Design

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1 Stantec Engineering: Green Building Design

2 Stantec and Green Building Building Performance Evaluation

3 Stantec s Services Architecture & interior design Bio/pharmaceuticals Buildings engineering Energy & resources Environmental infrastructure Environmental management Facilities planning & operations Infrastructure management & pavement engineering Manufacturing / industrial Planning & landscape architecture Program & project management Quality control / assurance Strategic management Transportation Transportation planning & traffic engineering Urban land engineering

4 Benefits of Green Building Design: Minimized impact on the surrounding local and global environment Healthier places to live More productive places to work Cost less to operate and maintain

5 ENVIRONMENTAL IMPACT As much as 40% of the raw materials and energy produced in the world are used in the building sector Athena Institute

6 20% Embodied Energy in Materials Energy used in the life of a building 80% Operating Energy

7 LEED Leadership in Energy and Environmental Design Rating system administered by: United States Green Building Council Canada Green Building Council Recognizes good green building design

8 Building Envelope Up to 75% less energy High performance glazing Solar control Daylight vs. Heat Gain

9 Daylighting Access to daylight Light shelves Reduced electrical loads Reduced cooling loads Better lighting control is essential

10 Water Conservation Utility Charges are Escalating in many places Storm Water Retention for Irrigation Grey Water Reuse Low Flow Fixtures

11 Natural Ventilation Increased user control

12 Stantec s Concepts Group Three major service offerings: 1. Computer modelling & building performance prediction 2. Green design facilitation 3. Work with existing buildings, including Building Performance Evaluation

13 Learning From Experience: Building Performance Evaluation

14 product evaluation and quality control is standard practice in most industries In Building design and construction, Building Performance Evaluation (BPE) fills this role.

15 OVERVIEW BPEs for green buildings answer four questions: 1. How is this building working? 2. Is it as intended? 3. How can it be improved? 4. How can future buildings be improved? (Preiser, 2005)

16 WHAT A BPE IS When: 1 to 5 years after occupancy What: Review of observed operation of the occupied building

17 GOALS FOR STUDY & ANALYSIS Maximize rate of improvement in building design Improved market advantage for Canadian design firms

18 WHAT A BPE IS NOT Recommissioning Energy audit Architectural criticism

19 OVERVIEW OF BUILDING PERFORMANCE EVALUATION PROCESS Get permission from building owners Review original design goals Examine utility records Interview building operator Administer Occupant Satisfaction Survey Measure acoustics, air quality, thermal comfort, lighting Analysis, conclusions

20 OCCUPANT SATISFACTION SURVEY Web-based survey developed by Center for the Built Environment, University of California at Berkeley Has been used extensively by the Center, over 4000 respondents Takes about 15 minutes for occupant to complete Modules can be added for special features

21 Building-related costs: a comparison PRODUCTIVITY IMPACT Buildings affect productivity Small increases in productivity hugely outweigh other potential savings Salary costs $200/sf Lease costs $20/sf Energy costs $2/sf Annual costs per square foot ($/sf) Salary costs Building lease costs Energy costs

22 PERFORMANCE COMPARED TO WHAT? Building performance can be compared: 1. to projections 2. to market building 3. to hypothetical zero-impact building (ultimate goal)

23 Short-term Prioritize building improvements Medium-term Improve subsequent projects Long-term Contribute to design guidelines RESULTS OF BPEs

24 Summary Building Performance Evaluation: Benefits designers by providing information regarding the success of their design choices Benefits the economy by improving the success of Canadian design firms internationally Benefits everyone by providing more comfortable buildings with minimized resource consumption

25 The more information you have, the more creative you can be. John Gibson, American Institute of Architects For more information, contact Blair Fulton