b'FEATUREPhoto credit:Adrien Williamsoccupied by various meeting rooms and a mechanical room. It should beDuring constructionnoted that the floor structure of the mechanical room was designed to limitThe structure was erected at a phenomenal rate; from August 2019 to the transmission of sound and vibration to the underlying amphitheatreAugust 2020, up to 760 metric tons of structural steel were delivered and and to support a retention basin weighing more than 90,000 kg. installed at the site for the erection of the amphitheatre. To keep up with The steel frame on the roof forms an extremely rigid belt, formedthis pace, professionals had to produce construction documents and by imposing trusses three metres high that intersected and limited thecomplete the review of shop drawings in an accelerated mode.points of support. Tensile columns (lines) attached to the roof support theThe amphitheatre, in the heart of the plaza, is located above the parking underlying floors with optimal spans.spaces as part of the hospital complex, rubbing shoulders as it overlaps Thisconceptpermittedthebaseofthecopperhullandthethrough the plaza with the underground parking lot and the two towers. amphitheatre to be free of columns. All the lifting equipment required for the erection of the framework had 38|WINTER 2022/23 ADVANTAGE STEEL'