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Cal Trans Building New Fan Wall Completed over the Memorial Day Holiday Weekend

Cal Trans Fan Wall, COAC, Mechanical Contractor

The COAC Installation Team just completed a challenging, time-crunched project at the Cal Trans Building across from the State Capitol. The project entailed de-constructing and dismantling an enormous single 12 ft by 12 ft. 100,000 CFM / 60 horsepower circulation fan and replacing it with a more energy efficient and significantly more manageable fan wall. The fan wall was made up of 15 integrated, independently controllable Hunt Air fan cubes that generate as much or more than the required 100,000+ CFM of air flow. The final size of the cube array, not including the supporting steel superstructure, was 16.25 ft. wide by 11 ft. tall. The entire disassemble, removal, preparation of new opening, and installation of the 15 cubes was completed in just under 70 hours during the long Memorial Day weekend with no work disruption to the Cal Trans tenants. All of the month’s long planning, creative solutions and great teamwork certainly paid off. Well done team!

Stay Tuned for the Time lapse video of the deconstruction and installation of the fan wall.


ACHR News Highlights COAC’s Helicopter Lift Video

COAC on the ACRH News WebsiteThe editors at the ACHR News (Air Conditioning Heating & Refrigeration) requested the use of the COAC Amazing Amazon Helicopter Lift video to highlight on their industry website. The website is a very well respected news and information source in the HVAC/R industry and to be included on their site is a very nice achievement. Click here to see the video on the ACHR News Website.

Everything Gets Old

Dealing with the inevitable obsolescence of your building control system

Obsolete ComputerMany of the systems that go into any commercial building are anticipated to have a long lifetime.  We expect the steel or concrete to last for the life of the building. Yet there are parts of the building that have fairly short lives like the carpet, paint and much of the IT gear.  Where the walls may last generations the IT gear (PC’s, Printers, Networking equipment) may have only 2 – 5 years before it is functionally obsolete.

So where do building controls fit in this mix?  Since they are part of the mechanical system, it seems reasonable to expect them to last for 12-20 years. In reality, the vast majority of the control system is more similar to IT gear than mechanical equipment and is going to have a much shorter life span.  How short?  The answer is “it depends”.     READ MORE