Different types of duct supports secure heating and air conditioning ducts to walls or ceilings. Installers choose from trapeze hooks, strap hooks, or steel cables based on the application. Material and size must be carefully considered for proper support and maintenance access.
Different types of duct supports are used to secure heating and air conditioning ducts to surrounding walls or ceilings. Installers secure each duct support to the ceiling using a bolt, screw, or other fastener, then secure the duct within the support hook. Some conduits simply rest within the holder, while others include built-in hooks for easy installation. Channel supports should be installed at carefully chosen intervals to ensure proper support and reduce the risk of failure.
Installers can choose from three varieties of duct support base, depending on the application at hand. Trapeze hooks support the conduit on three sides and typically consist of a metal strut supported by two vertical rods. The riser may be lined with neoprene or some other type of foam to protect the conduit from damage and reduce noise and vibration.
Strap hooks are basic metal strips that wrap around the duct, allowing installers to secure the duct to a wall or ceiling. Single bar straps wrap around the entire duct, with a threaded metal rod used to anchor the strap to the ceiling. Double rod belts consist of two separate metal belts that each wrap halfway around the conduit. A threaded metal rod holds the hook at each point where the straps intersect.
Steel cables are the simplest type of conduit support. Installers attach metal cable to the ceiling, then wrap the cable around the conduit every few feet along its length. Many fabric or plastic conduits include built-in steel cable hangers.
Builders and engineers must consider a number of factors when comparing duct support options. They must choose between steel, plastic and other materials based on the needs of the application. For example, galvanized duct supports may be required in areas prone to moisture, while thermoplastic units may better resist some chemicals in an industrial environment. The ability of the material to resist fire and high temperatures should also be considered.
Each duct support must be carefully sized based on the size, shape and weight of each duct. Engineers also consider the force created by the airflow through the system, as well as any external factors that can add force to the hooks. The length and width of each hook depends on the total load as well as the design and construction of the wall or ceiling. Finally, some duct hooks are also designed to provide easy access for maintenance and removal over time if needed.
Protect your devices with Threat Protection by NordVPN
