December 5, 2012
To the Editor
GRG Building Consultants Inc. completed a study on the effects of climate change on a high-rise residential building in Toronto.
We used the protocol specifically developed by Engineers Canada for this type of assessment. The building was constructed in the mid 1960s and included design and use elements typical of the vintage. GRG maintains a considerable expertise in the required repairs and upgrades on buildings and this one is no exception.
While it is clear that the Building Codes will have to change to accommodate the effects of climate change, of particular interest is the effect that climate change will have on the required remediation of our enormous existing building stock.
Issues such as the expected increase in temperature and, most particularly, the increased frequency and length of time people and buildings would be experiencing hotter temperatures, sets in play requirements for cooling that have not been previously considered for older buildings.
Since the heating and ventilation systems in those buildings typically did not allow for air conditioning, the questions engineers will have to answer in the upcoming decade include, how to retrofit in air conditioning, increased mechanical ventilation and what form it takes.
Is it tied to window retrofit with special AC sleeves? Is it by PTAC units added to walls? Is it by installing new central systems that don’t have the room (yet) for those systems? Is it by dedicating floors or parts of floors for cooling centres?
The challenges ahead are deep and fascinating.
As well, building envelope systems including windows and wall components must be redesigned to accommodate increased wind-driven rain pressure and possibly, a broader range of thermal movement to accommodate anticipated temperature extremes.
Most people consider that a couple of degrees of temperature increase won’t have that great an effect on buildings or the occupants but that only represents average conditions.
The predictions are that it will be the short term extreme conditions that engineers will have to design for. This applies to both existing and new buildings.
Thank you for the article. These issues are quite important.
President of GRG Building Consultants Inc.
|MOST POPULAR STORIES|
- Lafarge’s research tackles cement’s “bad boy” image
- Waterloo Region LRT work agreement almost done
- RFP released to shortlisted teams for Milton hospital expansion
- Upset waters over new Ontario diving regulations
- The Working Dead — construction of a post-apocalyptic zombie world
- 20 Most Popular Stories
|TODAY’S TOP CONSTRUCTION PROJECTS|
These projects have been selected from 371 projects with a total value of $1,936,826,394 that Reed Construction Data Building Reports reported on Thursday.
$134,000,000 Toronto ON Prebid
$128,250,000 North York ON Prebid
$100,000,000 Toronto ON Prebid
- Debate swirls over OCOT’s merit on its anniversary
- WaterGarden Worker
- Ontario to invest in cycling infrastructure
- U.S. construction labour concerns
- Compulsory certification in carpentry a “job killer”, says Kenney
- CaGBC to provide free LEED registration and certification for commercial projects in disaster-hit cities
- Economic cost of weather catastrophes is under appreciated: report
- Scotiabank sees slow growth in housing
- Photo Gallery: 2014 ACEC BC Awards of Excellence winners
- Journal of Commerce Preview for the week of April 21st, 2014
- Making Metro
- Crumbling roads a key election issue
- Early stages of concrete pump operator certification being developed in B.C.
- Legal battle over temporary foreign workers heats up
- Dive tower pushes formwork forward
- Understanding municipal strategy
- Calgary firm fined $35,000 for workplace injury
- B.C. labour minister calls for WorkSafeBC reforms
- B.C. prison proceeding