The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) has released an app for the third edition of its manual, HVAC Duct Construction Standard—Metal and Flexible. The app provides a simplified process for finding construction options for rectangular ducts with dimensions up to 3048 mm (120 in.) for applications discussed in the manual. It provides options for internal and external reinforcements. Internal options are limited to electrical metallic tubing (EMT) conduit tie rods, and … Continue reading Duct construction app
The HVAC system is rarely thoroughly studied or analyzed until there is a problem. In the daily activities of running a business or managing a building, HVAC is out of sight, out of mind until things get too hot or cold.
Since the original high-volume, low-speed (HVLS) fan prototype came to market more than 15 years ago, there have been significant technology and design developments improving the way they function.
For its Portland, Oregon, offices, Providence Health & Services—a Catholic healthcare ministry—includes open park space on a tight urban site. However, one of its ‘greenest’ attributes may be its floors.
Unwanted building envelope heat transfer can be a unique problem in commercial construction and retrofit. With the nationwide push for energy conservation and more efficient buildings, architects, engineers, and designers are being asked to come up with viable solutions.
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