Ground Bearing Capacity (GBC) The capacity of the soil or ground to carry a load (quantified as pressure) without producing a shear failure. Gross Load = Net Load (item being lifted) + Lifting Gear and Accessories This is the value to used against a Manufacturer’s Lifting Chart. Gross Load The overall load lifted by a crane’s lifting line and boom. This includes the weight of the hook and block, any lifting accessory used and the load itself.

Gross Capacity Is the max mass/weight that can be lifted by the crane at the end of its lifting line when it is vertical (straight down with no side lift). Sections of a Crane Boom Fly Jib A Flying Jib is the last section (tip) in a crane’s boom (or extended jib) that acts as a jib. Eye A loop at the end of a line (cable,chain,rope) that can be attached to a hook. If a cargo load is hoisted at the wrong moment, the resulting shock load will create a dynamic effect that can increase the load on the crane by up to three times the actual gross weight. The average wave height when unloading vessels in the North Sea is around 3m. This can sometimes occur when a load is being transferred off a moving surface like a boat deck. the force required to start and stop a mass from moving in a single direction. Dynamic Load The additional load created by a force being applied to the Gross Load. Also see Crane Industry Abbreviations and their meanings. Glossary of terms used in the trade shared to create a common understanding.

Crane lifting plan book