YC Condos: First Use of Viscoelastic Coupling Dampers

Past Event
18:00 - 19:00 / Wednesday September 18th 2019Salle A-1600 du Pavillon A, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal

YC Condominiums has an 11-to-1 slenderness ratio, due to a small site (38 meters by 48 meters), floor plan restrictions from a heritage building on one side, and setbacks on all three sides. This dictated an extremely efficient structural and damping configuration, achieved with the Viscoelastic Coupling Damper (VCD) system, and was the first application of this technology in the world. The structural system consists of a coupled shear-wall lateral load-resisting system in the narrow plan direction, along with a conventional reinforced concrete core. By concentrating lateral stiffness on these two coupled wall lines, large deformations are introduced into the coupling elements under both wind and seismic vibrations. When the walls rotate and undergo axial deformations, they deform the viscoelastic material, resulting in instantaneous viscous damping. This design for the tower resulted in a cost-effective, non-invasive and high-performing structural damping system for the tower that resulted in significant benefits to the developer, including 5,000 sq.ft. of additional architectural space at the penthouse of the building, simplified construction, and reduced costs.

Cette conférence sera présentée en anglais. This conference will be presented in English.

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Speaker for this event

Kevin McLean
Kevin McLean B.Sc., M.Sc., LEED APRead Jones Christoffersen Ltd.

Typically dealing with very large projects requiring a strong, organized leader, Kevin’s recent portfolio of major projects includes numerous high-profile tall building projects such as: 1 Bloor West (The One) which will become Canada’s tallest building, 160 Front Street West office tower, 30 Bay Street (The HUB) office tower, Gehry Towers, and YC Condos. Kevin specializes in the design of tall and complex structures and has broad expertise in tall / slender structures governed by dynamic building motions caused by wind. Many of his projects required close collaboration with leading wind consultants and require the use of supplemental damping systems, including the 454 Yonge Street condominium - the first building in the world to utilize the patented viscoelastic coupling damper system. Kevin is a member of several industry / code committees including: CSA A23.3, CSA A23.1, and ACI 375, and coauthored a chapter in CTBUH’s “Damping Technologies for Tall Buildings.”