AlvinofDiaspar
Moderator
From Toronto East York Community Council:
http://www.toronto.ca/legdocs/mmis/2007/te/bgrd/backgroundfile-7765.pdf
AoD
http://www.toronto.ca/legdocs/mmis/2007/te/bgrd/backgroundfile-7765.pdf
AoD
Toronto Mount Sinai Hospital Renewal | ?m | ?s | BBB
- Thread starter AlvinofDiaspar
- Start date
canarob
Senior Member
Here is a model. Does anyone have a proper rendering?
billy corgan
Active Member
Rendering from Vanbots:
The new six-storey addition starting on the 19th floor of the existing Mount Sinai Hospital will take place at the same time the existing structure undergoes extensive seismic reinforcement.
This two component project includes six storeys totalling 137,000 square feet facing Murray Street. This addition will be constructed directly over the busy entrance used by most employees and visitors to Mount Sinai and is located in a tight downtown site which has no laydown space on the street level. During construction of the addition, seismic reinforcing upgrades of the existing will take place with new shear walls and column reinforcing taking place on each floor.
Both components of construction will take place with existing hospital operations taking place as usual. Vanbots will act as the building department for Mount Sinai during these critical schedules.
The new six-storey addition starting on the 19th floor of the existing Mount Sinai Hospital will take place at the same time the existing structure undergoes extensive seismic reinforcement.
This two component project includes six storeys totalling 137,000 square feet facing Murray Street. This addition will be constructed directly over the busy entrance used by most employees and visitors to Mount Sinai and is located in a tight downtown site which has no laydown space on the street level. During construction of the addition, seismic reinforcing upgrades of the existing will take place with new shear walls and column reinforcing taking place on each floor.
Both components of construction will take place with existing hospital operations taking place as usual. Vanbots will act as the building department for Mount Sinai during these critical schedules.
canarob
Senior Member
Ugh.... well, it matches the existing building at least.
adma
Superstar
And it's in the rear, so it's out of sight relative to the University elevation--and has the makings of "master planned for from the beginning", anyway.
Though in general, Mt. Sinai would be a prime entry of mine in the "Toronto buildings everyone loves to hate, but you think are OK" thread. (Hey, it was a George Baird first-rate second-rate idee fixe...)
Though in general, Mt. Sinai would be a prime entry of mine in the "Toronto buildings everyone loves to hate, but you think are OK" thread. (Hey, it was a George Baird first-rate second-rate idee fixe...)
Zephyr
Active Member
I believe this building can be converted into a parking lot without demolition some day. So it is an early candidate for re-use.
simply Dan
Active Member
Is Toronto General due for another expansion as well in the coming years?
yyzer
Senior Member
from today's Daily Commercial News...
Jan. 17, 2008
Vanbots Construction takes on post-tensioning challenge at Mount Sinai Hospital project
Subcontractor Harris BBR partners on one-of-a-kind project
DON PROCTER
correspondent
Anyone passing by Mount Sinai Hospital in downtown Toronto might notice construction underway on what will be a major transformation: the women’s and infants’ care department built on six new floors atop the existing 14-storey west wing.
What passersby won’t see is almost as significant: a daunting project of structural upgrading.
For starters, the three banks of elevators in the central core of the hospital will go through a major overhaul that involves the installation of two post-tensioned cables at each corner of the elevators.
The work won’t be a piece of cake.
“I don’t think this kind of post-tensioning has ever been done in Toronto before,” says Errol Dubé, senior project manager, Vanbots Construction Corporation, general contractor for the $50 million project that includes the new six-floor addition.
In many cases, seismic reinforcement simply involves the addition of shearwalls or bolting plates to existing shearwalls at elevator shafts. “It stiffens them (elevator core walls) up, but not to the extent of what we’re doing with post-tensioning at Mount Sinai,” Dubé points out.
At the hospital, 25- and 50-foot deep holes eight inches in diameter will be drilled at each corner of the elevator shaft into bedrock for the installation of anchor cables. The cables will be anchored to a grade beam constructed at the shaft’s base slab, explains Tim Pahapill, project engineer of the post-tensioning subcontractor Harris BBR, a joint venture between Canadian BBR Inc. and Harris Rebar.
The grade beam also secures post-tensioned cables rising up the inside of the shaft to the roof, explains Pahapill, noting the cables prestress the shaft concrete vertically. “It’s quite an elaborate mechanism.” The total pre-stressing loads on each corner are 1.87 million pounds, he says.
The project is one of a kind. But the project engineer says a conventional post-tensioning approach wasn’t deemed practical.
Pahapill says how to meet clearance requirements between the elevator and the cables will probably be one of the most challenging elements of the job, largely because the core — like all tall elevator cores — won’t be perfectly plumb. Each cable will be contained inside bracketed sheaths bolted to the inside corner of the shaft walls.
Each elevator bank will be post-tensioned at different times to minimize disruption to hospital operations. “One of our biggest challenges is how to interface with the hospital to avoid interfering with their operations,” explains Pahapill.
Drilling through bedrock will be done from service tunnels underneath the hospital. But because the tunnels are busy service expressways between hospitals in the area, that won’t be an easy feat.
The plan calls for the fabrication of a rock drill to “squeeze into a three-foot space” in the tunnels, leaving at least four feet of clearance for hospital traffic (including equipment pallets) to pass. “It’s tight,” says Pahapill.
Another seismic upgrade involves replacing concrete block walls with reinforced concrete shearwalls at four major stairwells. Eliminating all noise — such as drilling into beams to anchor rebar — will be impossible, but controlled walls (hoarding) will be installed in each floor as a buffer to hospital activities, explains Dube.
But it’s not just noise that contractors have to minimize. New dust control legislation in Ontario also makes the structural project tougher, points out Altaf Stationwala, senior vice-president of Mt. Sinai’s operations and redevelopment.
Stationwala says the decision to go with such extensive structural upgrades was to ensure that the wing meets the 2006 Ontario Building Code (OBC). “Our permit for the fitout is subsequent to the (introduction of the) ’06 OBC so we want to make sure we are compliant.”
The code classifies hospitals as “post-disaster buildings,” meaning they must be able to continue operating when disaster strikes, adds Stationwala.
Installing structural steel for the six additional floors requires a large tower crane located beside the hospital. The crane’s pad will be constructed at grade. It will consist of a 32- by 32-foot poured concrete base five-to-six-feet in depth. Normally, cranes are founded below grade but that isn’t possible because of underground utility services, says Dube.
The project will be completed in the spring of 2009.
It is one of several hospital projects approved under ReNew Ontario, the province’s five-year, $30-billion plan to modernize and replace many of the province’s hospitals, schools and post-secondary institutions. $5 billion is allotted for health care infrastructure.
Jan. 17, 2008
Vanbots Construction takes on post-tensioning challenge at Mount Sinai Hospital project
Subcontractor Harris BBR partners on one-of-a-kind project
DON PROCTER
correspondent
Anyone passing by Mount Sinai Hospital in downtown Toronto might notice construction underway on what will be a major transformation: the women’s and infants’ care department built on six new floors atop the existing 14-storey west wing.
What passersby won’t see is almost as significant: a daunting project of structural upgrading.
For starters, the three banks of elevators in the central core of the hospital will go through a major overhaul that involves the installation of two post-tensioned cables at each corner of the elevators.
The work won’t be a piece of cake.
“I don’t think this kind of post-tensioning has ever been done in Toronto before,” says Errol Dubé, senior project manager, Vanbots Construction Corporation, general contractor for the $50 million project that includes the new six-floor addition.
In many cases, seismic reinforcement simply involves the addition of shearwalls or bolting plates to existing shearwalls at elevator shafts. “It stiffens them (elevator core walls) up, but not to the extent of what we’re doing with post-tensioning at Mount Sinai,” Dubé points out.
At the hospital, 25- and 50-foot deep holes eight inches in diameter will be drilled at each corner of the elevator shaft into bedrock for the installation of anchor cables. The cables will be anchored to a grade beam constructed at the shaft’s base slab, explains Tim Pahapill, project engineer of the post-tensioning subcontractor Harris BBR, a joint venture between Canadian BBR Inc. and Harris Rebar.
The grade beam also secures post-tensioned cables rising up the inside of the shaft to the roof, explains Pahapill, noting the cables prestress the shaft concrete vertically. “It’s quite an elaborate mechanism.” The total pre-stressing loads on each corner are 1.87 million pounds, he says.
The project is one of a kind. But the project engineer says a conventional post-tensioning approach wasn’t deemed practical.
Pahapill says how to meet clearance requirements between the elevator and the cables will probably be one of the most challenging elements of the job, largely because the core — like all tall elevator cores — won’t be perfectly plumb. Each cable will be contained inside bracketed sheaths bolted to the inside corner of the shaft walls.
Each elevator bank will be post-tensioned at different times to minimize disruption to hospital operations. “One of our biggest challenges is how to interface with the hospital to avoid interfering with their operations,” explains Pahapill.
Drilling through bedrock will be done from service tunnels underneath the hospital. But because the tunnels are busy service expressways between hospitals in the area, that won’t be an easy feat.
The plan calls for the fabrication of a rock drill to “squeeze into a three-foot space” in the tunnels, leaving at least four feet of clearance for hospital traffic (including equipment pallets) to pass. “It’s tight,” says Pahapill.
Another seismic upgrade involves replacing concrete block walls with reinforced concrete shearwalls at four major stairwells. Eliminating all noise — such as drilling into beams to anchor rebar — will be impossible, but controlled walls (hoarding) will be installed in each floor as a buffer to hospital activities, explains Dube.
But it’s not just noise that contractors have to minimize. New dust control legislation in Ontario also makes the structural project tougher, points out Altaf Stationwala, senior vice-president of Mt. Sinai’s operations and redevelopment.
Stationwala says the decision to go with such extensive structural upgrades was to ensure that the wing meets the 2006 Ontario Building Code (OBC). “Our permit for the fitout is subsequent to the (introduction of the) ’06 OBC so we want to make sure we are compliant.”
The code classifies hospitals as “post-disaster buildings,” meaning they must be able to continue operating when disaster strikes, adds Stationwala.
Installing structural steel for the six additional floors requires a large tower crane located beside the hospital. The crane’s pad will be constructed at grade. It will consist of a 32- by 32-foot poured concrete base five-to-six-feet in depth. Normally, cranes are founded below grade but that isn’t possible because of underground utility services, says Dube.
The project will be completed in the spring of 2009.
It is one of several hospital projects approved under ReNew Ontario, the province’s five-year, $30-billion plan to modernize and replace many of the province’s hospitals, schools and post-secondary institutions. $5 billion is allotted for health care infrastructure.
p5connex
Active Member
The post-tensioning stuff sounds pretty impressive, but I am a little shocked by how little money this is going to cost: $50 million is not a lot, especially for a hospital expansion of this size. There is so much complex infrastructure which needs to be included amongst other things..
p5
p5
unimaginative2
Senior Member
Perhaps that's the cost of the building shell alone, not including all the expensive equipment inside.
p5connex
Active Member
^^I was thinking that, but even then you still have to construct more complex structures to support the infrastructure..but you are probably right.
p5
p5
current
Active Member
April 1
From McCaul St.
From McCaul St.
adma
Superstar
The first-rate second-rate only gets first-rate second-rater...
p5connex
Active Member
Baird, a first-rate second rater-..I am sure UofT sorts might disagree.. ?
However, the connection to the hospital images makes me wonder..wtf?
p5
However, the connection to the hospital images makes me wonder..wtf?
p5
ahmedyusali
Member
Edward & Elisebeth street
recently there was demolition activity in between Edward street & Elisebeth street just opposite side of greyhound bus terminal, does anybody know what project are they going to build that site?
recently there was demolition activity in between Edward street & Elisebeth street just opposite side of greyhound bus terminal, does anybody know what project are they going to build that site?