A Below-the-Hook (BTH) lifting device is classified as a device used for attaching a load to a hoist. Rigging is the primary form of BTH lifting devices which include but are not limited to: chains, hooks, shackles and load rings. A custom BTH device is commonly used to lift uniquely shaped material, long loads, spread the load to multiple hooking points, and to add safety to the lifting operation. AFE Crane designs and builds Below-the-Hook lifting devices to the latest version of the ASME B30.20 and ASME BTH-1 standards to ensure safe lifting. AFE Crane’s custom Below-the-Hook lifting devices are always built to the customer’s specific requirements.
The most common type of BTH lifting device are lifting beams. These lifting devices can be built with a large range of capacities and spans depending on the customer’s requirements. A lifting beam is often made from structural members and uses multiple rigging points for the hoist hook(s) and for attaching the load.