Ontario Science Centre to close immediately due to risk of roof collapse
cbc.ca
cbc.ca
https://en.wikipedia.org/wiki/Ontario_Science_Centre
When it first opened [in 1969], the Science Centre was a pioneer for its hands-on approach to science, along with San Francisco's Exploratorium and the Michigan Science Center in Detroit. Unlike a traditional museum, where exhibits are for viewing only, the majority of the exhibits at the Science Centre were interactive, while many others were live demonstrations (e.g. metalworking). The Communications room contained a number of computerized displays, including a very popular tic-tac-toe game, run on a PDP-11 minicomputer. By 1974, it hosted about 250,000 students on field trips annually.
Over 50 years, the Ontario Science Centre has introduced hundreds of thousands of students to scientific principles via interactive exhibits. It will now be replaced by a commercial theme park in a tourism venue, rather than serving local students via the new Science Center subway station. The Ontario Science Centre Science School (OSCSS) offers grade 12 University Preparation courses in STEM subjects.. [and] an interdisciplinary studies credit in science communication.. the program.. is available at no cost to students from anywhere in Ontario. While at the Science Centre, students earn practicum hours through volunteering and interacting with visitors..
Ontario Science Centre was used by David Cronenberg as a location for his 1970 film Crimes of the Future.
Does Canada not have a tech lobby that can outbid construction boondogglers, to defend the next generation of tech talent? Alternately, the US tech lobby could defend the Ontario Science Centre, as part of a talent supply chain that leads to U of Waterloo and subsequent engineering labor pipeline to US tech companies. If the Ontario Science Center and future labor pool must be sacrificed, can they at least fetch a higher price at the altar of special interests?Haven't really followed the story closely, but quite sad to see it getting (forcefully?) shutdown like this.
The last half-decade, it was a shell of what it was.
“The centre must be a place for everyone – not cater to 12 specialists and ignore 12,000 others. It must initially give a sense of self-possession, It must arouse curiosity. It must lead to understanding , not just knowledge. It must be a place of wonder. It must give immeasurable qualities of comfort and joy and discovery with others. It must inspire the visitor with ideas through active participation. It must be an emotional experience, with intellectual satisfaction and it must be fun”.
Since 1969:
52 million visitors
9 million students
With the [SF] Exploratorium.. inspired a global science museum movement with over 3,000 science centres
Annually:
900,000 visitors
170,000 students through school field trips
Dec. 2023 response to business case for relocation: https://savesciencecentre.com/wp-content/uploads/2023/12/res...See Turcot collapse in Montreal.
See Olympic building in Montreal.
But seriously, the city has had issues finding contractors for basic services because they'd all been banned for ties with organized crime. It's absolutely mad. Then there's what's happening at the port with all the stolen cars...
If it’s made from concrete, absolutely. Virtually every commercial building has a flat metal roof with epdm over it because it’s substantially easier to replace it every 20 years. You start on one end, cut out sections, install new roof decking and then install the membrane over it. Repeat until you’ve completed the roof.
For this specific building, everything on top of or attached to the roof needs to be removed and reinstalled. Probably everything inside the building that would be exposed to the elements when the roof is removed would need to be removed and replaced. You need heavy cranes to lift the precast concrete panels into place. If they can’t use the lightweight concrete they used in the 60s, it’s possible the foundations/footings aren’t strong enough to support a new concrete roof which would require structural reinforcements. For trades you’ll have general laborers, heavy equipment operators, steelworkers, mechanical and electrical, concrete.
Double digit millions and two years to replace a concrete roof on a huge building is not outlandish if you understand what construction labor and heavy equipment costs.
Here’s an excerpt from the Wikipedia article about reinforced aerated autoclaved concrete, Ontario has had 30 years to secure funding for this roof and decided not to:
> RAAC has been shown to have limited structural reinforcement bar (rebar) integrity in 40 to 50 year-old RAAC roof panels, which began to be observed in the 1990s
Was there something about lightweight concrete from the 1960s that would preclude its use today? Asbestos fibres?
> RAAC has been shown to have limited structural reinforcement bar (rebar) integrity in 40 to 50 year-old RAAC roof panels, which began to be observed in the 1990s.[22][23][24][25][26] The material is liable to fail without visible deterioration or warning.[22][26] The material is not the root cause, rather inadequate roof maintenance, which permits water infiltration, and decisions by building owners as to repair or the replacement of existing roofs, which is a part of cost-benefit analysis.[27]
> Professional engineering concern was publicly raised in the United Kingdom in 1995 about the structural performance of RAAC following inspections of cracked units in British school roofs,[28] with it being observed that it was likely that RAAC in other countries may exhibit problems similar to those found in the United Kingdom.[18]
https://en.m.wikipedia.org/wiki/Autoclaved_aerated_concrete
More info about RAAC, specifically from the 1950s-1970s
https://www.lboro.ac.uk/news-events/news/2023/march/reinforc...
If anyone else went in the 80s and remembers the fire-fighting computer game and knows somewhere it can be played now, I'd love to hear about it. The graphics were quite primitive but it gave a really good basic understanding of wildland fire fighting.
PS not worth the admission, if you want to take the kids on an educational adventure go to Ripley's Aquarium.
Maybe trying to get students interested in science instead of computer programming is problematic for this reason?