Example 2 One Wall Centre Vancouver, British Columbia   Photo by Motioneering, Inc. At One Wall Centre, the water contained in two specially shaped tanks provides the mass for the building's tuned liquid column damper and doubles as a fire suppression system.     ***Tallest building in Vancouver, 48 stories high*** ***Instead of a TMD, a tuned liqid column damper (TLCD) replaces the role of the mass, spring, and damping device of the TMD. In order to counteract the building's motion and keep it at rest, a TLCD uses large tanks of water or other liquid and a sluice gate. The geometry of the water tanks is designed to match the frequency of the structure so that it provides a near equal and opposite reaction to the motion of the building due to wind or other forces. The sluice gate is used to dissipate the energy created by the water's motion.***     Photo by Motioneering, Inc. This figure shows the mechanical penthouse cross section of the One Wall Centre where the TLCD is located. The TLCD is right in the middle of the floor plan.