Sentier des Cimes – Entry Tower

The project consists of a 1.5 km pedestrian footbridge suspended at treetops from which its name comes from “Tree Top Walk”. It also includes two towers, a main observation tower standing at approximately 40 meters (120 feet) and an elevator tower five stories high (25 meters, 82 feet).

 

Marc-Olivier Beaudry

LH2 Services Professionnels

Québec, Canada

The project consists of a 1.5 km pedestrian footbridge suspended at treetops from which its name comes from “Tree Top Walk”. It also includes two towers, a main observation tower standing at approximately 40 meters (120 feet) and an elevator tower five stories high (25 meters, 82 feet).

The Tree Top Walk is a walkway composed primarily of glulam beams on which sits a wooden “BC fir” decking. On average the walkway is 10 meters high and reaches over 17 meters at its highest point giving a treetop point of view to its hikers.

The elevator tower is a concrete core that houses an elevator and its proper
operating equipment. On the outskirts of the core there are winding stairs built of “BC” Fir glulam.

The primary glulam frame is secured to the concrete core by a horizontal bracing system composed of glulam member and steel connections. The Frame and core of both towers sit on raft concrete foundations 1,2 meters thick. Meanwhile the walkway sits on “BC Fir” lumber posts approximately 500mm in diameter assemble to mat foundations and secured to rock anchors to prevent uplift.

 

User benefits:

Advance Design was particularly helpful in this “Design Built” type of project because of it’s ease and speed of modeling allowing to revise the model in real time during the course of the project. The non linear analysis features with the Tension/compression planar support tool gave us the opportunity to evaluate the overturning stability of the raft foundations, if the design is at risk of uplift and finally to evaluate the peak pressure generated on the infrastructure soils in consideration of their bearing capacity.