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BMO Atrium

Page history last edited by Mireille 12 years, 9 months ago

Bank of Montreal (BM) Atrium 

 

  1. Acoutics
  2. Pillars | Structural Supports

 

Acoustics

  • This is a multi-purpose space that includes yoga classes in winter, meetings, events & parties.
  • The same acoustic insulation as is used in the Welcome Centre is used in this room – behind the “holey” mezzanine metal wall.
  • So the room has been “tuned” – not like a concert hall, but mainly to dampen noise and allow a speaker to be heard.

 

Pillars || Structural Supports

  • This building has been built within the footprint of a pre-existing building
  • The old walls aren’t structurally sound, so can’t help support the new construction
  • It was thought the new structural pillars could be placed right next to the old walls,
  • but the engineers said that the excavation for the pillars could have caused the walls to simply fall down.
  • This is why the pillars are set back this distance.
  • This actually turned out to be a fortunate stroke of serendipity in that it provided the opportunity for the 2nd floor outside gallery walk
  • Floors 3 and 4 -- cantilevered off the pillars and 5 also has a terrace
  • So as to avoid a lot of disruptive excavation, each pillar is supported by 4 “micro piles”
  • ..... of  very high strength steel rods about the thickness of your arm(100mm).
  • They’re about 9 metres long and go down through the 4 feet of rubble, through the water table and into bedrock.
  • Building code normally requires pillars to be encased in fire-retardant drywall
  • The designers were able to source a fire-retardant paint -- so the pillars could be integrated into the design

 

 

  • Over 90% of the steel used in the Centre for Green Cities is recycled and sourced from Canada and the northern U.S.

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