We’re back with another update on the latest crane news, this time with an over-the-counter travel crane.
The over-under crane was introduced in 1999, and is designed to transport over 6,000 tonnes of equipment from a construction site to a site of use.
As the name suggests, the over-unders can move up to six metres (20 feet) per second and are capable of moving a load of over 4,000 kilograms (8,000 lbs).
The ’90-era over-head travelling cranes are capable, in fact, of moving up to 40 metres per second.
A lot of these cranes were built for large projects such as highway projects.
According to a 2011 report, the cost of these over-saws at $8,500 per tonne was $5.7 million.
We’ve updated this article with more information about these crags and how to buy them.
Read more about over-hanging bridges: