A crane with a one piece jib and steel wire ropes. Only loaded it works with compression and deflection.
These are the most common cranes. In the past they were known as cranes with heads. The wire ropes are fixed at these heads and hold the jib. There are cranes with one and two wire ropes. Their main advantages are:
1. The need less space for their transport.
2. They enable major load capacity in the working area of the second cable.
The jib of the intermediate models does not weigh more than 5 tons. This is very interesting because the provide the same solutions as the flat-top cranes except on sites with limited space, however, their assembly and transport is more economical.