Jan 28 2017
Happy Chinese New Year
Happy Chinese New Year
CS Contributes to BUILDINGS Article about the Cradle To Cradle Certified™ Products Program
Types of Building Movement
Over the past few years, I was involved in projects to replace the expansion joint covers on both the Tampa International and the Lambert-St Louis International airports. In each of these facilities, the expansion joint covers were replaced as part of a floor replacement upgrade. Recently, I was on a string of out-of-town trips and got the opportunity to see both of these completed projects.
It reminded me of how both jobs had similar load-bearing requirements and made me think about how important it is to ensure that the specified covers are able to withstand the anticipated traffic.
The importance of planning for the expansion joint cover load requirements is often overlooked. It is nearly as important as determining the correct movement, especially in airports. If you have ever traveled through an airport, there is a good chance you were almost a run over by the horn-honking carts used to transport people and bags from gate to gate. Considering how often they crisscross the terminal, these fully-loaded carts can very quickly ruin the best designed expansion joint cover, if load requirements are not well-thought-out.
The importance of planning for the expansion joint cover load requirements is often overlooked.
We learned this lesson the hard way on the Concourse A project at Lambert-St. Louis International Airport. In order to withstand a heavier load requirement, we increased the thickness of our heavy-duty, surface-mounted plate cover without considering how flush it must be. As a result, the top of the plate extended above the rest of the flooring surface. Even when a cover meets ADA requirements for elevation changes, we must consider travelers moving through the terminal with their small-wheeled luggage to ensure that our joint covers are not causing a noticeable bump.
With our knowledge gathered from Concourse A on load and flush requirements, we were ready when they requested a custom joint cover on Concourse C. We designed a cover that matched the tile pattern width, resulting in a heavy-duty system that blends with the surrounding finishes and has a minimal bump.
Our struggles in St. Louis turned into valuable knowledge gained, because at Tampa International Airport the same design principles were needed. Thanks to our work at Lambert-St. Louis International Airport, we handled the job with ease. See APF cover in image at top.
At CS custom expansion joint covers are our specialty. On these two jobs we added more information to our knowledge base that we can carry into the next project and beyond.
– Account for the correct load requirements for your project.
– Consider all consequences of your design modifications.
Your next project could be our next successful job!