501 Lakeshore

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501 Lakeshore

501 Lakeshore

A Gravity Barrier Case Study

Customer

Trinity Group.  501 Lakeshore is a new 15 acre “big box” development in Port Credit Ontario that includes two new mixed-use retail buildings.  Due to the close proximity of this new development to existing residences, various noise control measures were required in order to meet compliance with MOECC NPC 300.

Project Challenges

Time

The fabrication and delivery schedule for this project required 34 acoustic rooftop barriers to be installed in 34 days.  Parklane had to work both quickly and efficiently to complete the project on time and on budget. This involved refining the standard PMA gravity barrier design to accommodate a custom, yet streamlined delivery of the solution. A design scope of this magnitude would have typically required several months to complete.

Barrier Heights

This job pushed the envelope on the generally accepted ‘height limitations’ of gravity barriers with some barriers coming in at well over 10 feet above the roof surface.

Project Solution

Design

For a large job like this we always try to simplify logistics by standardizing the various components as much as possible, but - since each barrier experienced different dynamic loading conditions - standardization posed a unique challenge. Using advanced 3D modelling techniques, we were able to manipulate our 3” panel barrier design to overcome this obstacle.  The high turn-over (flipping) and sliding forces due to the barrier height were addressed by using an innovative rigid-body structural design that transferred these wind-induced loads to the base footings and rigid tie-back points (allowing for barrier heights up to 126” tall).

Modularization

Standard barrier design and fabrication can be a time-intensive process.  An innovative design approach allowed the barrier assemblies to be divided into multiple high-production subassemblies that could easily be bolted together. These ‘modules’ were carefully engineered to ensure we weren’t sacrificing quality/structural integrity while compressing the delivery schedule.

Results

34 Barriers in 34 Days

Barrier assembly began on July 13th , with final touchups applied August 31st .  Fabrication: 19 days. Installation: 11 days.  Touch-ups: 4 days.  TOTAL TIME: 34 DAYS.  Through close collaboration with the General Contractor and all project stakeholders, the Parklane team successfully delivered their complete project scope on time and on budget.

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