House collapes in North Toronto

[one.of.a.kind]

An hour before the collapse a worker told a neighbour that they were learning underpinning.

Guess the instructor needs a few more lessons himself.





http://www.thestar.com/news/gta/2014/09/09/house_collapse_traps_workers_in_north_toronto.html

 

[GameBoy27]

I wonder if that was the worker who was killed?

 

[superstar_88]

No need to wonder. According to the article yes a worker.

 

[GameBoy27]

No need to wonder. According to the article yes a worker.

I know it was a worker who died. I meant I wonder if it was the worker who told a neighbour that they were learning underpinning who was killed.

 

[Adam_hadam]

The good news is that it was a detached house. Could you imagine if it was a semi the morons were underpinning?

 

[GPIDEAL]

The poor worker was 19. Not sure if has been released under the rubble, but they were still excavating a few hours ago.

 

[HEYHEY]

so this is what people in toronto pay 1,000,000$+ for eh?

 

[james t kirk]

Underpinning a structural brick house is not something to be taken lightly.

I've undertaken the underpinning of 3 houses over the years, including my own in order to gain head room in the basement. I'm always very conservative in my approach. I always do at least 4 stages around the perimeter walls and no more than 3 feet wide with each pin. I also always use self compacting concrete that gets purchased from Innocon or Dufferin.

I've seen guys pin in 3 stages (heard of 2 stages) and 4 and 5 foot wide pins. That's the crazy shit.

I've also seen many times guys just batch concrete using the sand they dug out from under the old footings and adding a little Portland and mixing it in wheel barrows. Foolish.

I've also seen guys bench a basement in order to lower it. Again, a fool's errand.

Proper underpinning takes a lot of time and skill and patience. Since that costs money, real money, it seldom gets done. There was a house around Dundas and Runeymede that literally tipped over 2 years ago while it was being underpinned by hacks.

http://news.nationalpost.com/2012/0...toronto-home-tilted-and-set-to-be-demolished/

 

[TeasePlease]

so this is what people in toronto pay 1,000,000$+ for eh?

$1mm is land value only in this hood for that lot

 

[peter4025]

Underpinning a structural brick house is not something to be taken lightly.

I've undertaken the underpinning of 3 houses over the years, including my own in order to gain head room in the basement. I'm always very conservative in my approach. I always do at least 4 stages around the perimeter walls and no more than 3 feet wide with each pin. I also always use self compacting concrete that gets purchased from Innocon or Dufferin.

I've seen guys pin in 3 stages (heard of 2 stages) and 4 and 5 foot wide pins. That's the crazy shit.

I've also seen many times guys just batch concrete using the sand they dug out from under the old footings and adding a little Portland and mixing it in wheel barrows. Foolish.

I've also seen guys bench a basement in order to lower it. Again, a fool's errand.

Proper underpinning takes a lot of time and skill and patience. Since that costs money, real money, it seldom gets done. There was a house around Dundas and Runeymede that literally tipped over 2 years ago while it was being underpinned by hacks.

http://news.nationalpost.com/2012/0...toronto-home-tilted-and-set-to-be-demolished/

You are correct. Proper underpinning has to be done in 4 stages and an inspection has to be called after each stage is finished. People who do it in less stages are morons playing with their lives. I hope the contractor had proper insurances and wsib otherwise the owners will be held liable for this.