Wind Design Article, Construction Canada Feature

Dr. Karen Liu, Green Roof Specialist, Next Level Stormwater Management

Wind Design Process for Modular Vegetated Roofing Systems by Karen Liu, PhD

Next Level’s green roof specialist, Dr. Karen Liu, has the feature article in the January 2021 issue of Construction Canada Magazine.

You can read the full article here: Wind Design Process for Modular Vegetated Roofing Systems.

CSA A123.24 Standard Test Method (See video below)

The article examines the wind effects on modular vegetated roofing assemblies and explains how to use CSA A123.24-15 Standard Test Method for Wind Resistance of Modular Vegetated Roof Assembly to determine their resistance.

Vegetated Roof Assembly Wind Design Process: Three Simple Steps

The CSA A123.24-15 enables designers to determine if an assembly is secured against the wind uplift for a specific project by following three simple steps.  Read more about the wind design process the attached article.

Construction Canada magazine cover with aerial view of luxury condo building's vegetated roof.Selecting the appropriate vegetated roof for wind resistance

Like any building envelope components, vegetated roof assemblies must be designed properly to resist wind forces to ensure durability and public safety. Designers should follow best practices from existing guidelines. CSA A123.24-15 provides a means to determine the wind resistance of modular vegetated roof system. Engineers should ask green roof suppliers for wind resistances of their systems and follow the wind design process to select the appropriate assembly for their projects.

Online Learning Opportunity

Want to learn more about wind design?  Join Karen Liu for an online learning opportunity below. Click here to learn about other free LACES approved webinars.

Click here to register for next webinar series, including

Wind Design for Modular Vegetated Roof Assemblies

Learning Objectives

  1. Define modular vegetated roof assembly (MVRA)
  2. Understand wind effects on roofing and vegetated systems
  3. Recognize governing factors of wind resistance for MVRA
  4. Test for wind uplift resistance and wind flow resistance
  5. Apply CSA A123.24 in wind design process for MVRA

Need Wind Calculations? Email or call (416) 637-5772 Ext 1

Next Level Stormwater Management logo in bold blue with logo above in blue and green

Next Level Stormwater Management  is Canada’s leading supplier of pre-vegetated roofs such as LiteN’Less™, Xeroflor® and StormCap™ systems. We customize to local requirements and offer warranty and maintenance support. Our team provides analytical support such as ​stormwater calculations specific to location ​and building/roof type. As a Purple-Roof partner, Next Level Stormwater Management has access to the latest green roof stormwater test data and related innovative hydrologic modeling tool.

Email or call (416) 637-5772 Ext 1 for stormwater calculations specific to your project.Urbanscape Detention logo by Knauf Insulation

The image conveys this system is powered by the Purple-Roof concept.


Unbiased, scientific research for the green infrastructure industry.

Text reads Research & testing by: Green Roof Diagnostics.