MAGCO- GOLIATH CRANES / GANTRY CRANES are self propelled cranes running on rails installed at ground level. The above image shows two such cranes working in tandem.
Such cranes are used at -

Construction sites
Ports and harbors
Workshops where existing columns cannot bear the wheel loads of a bridge crane
Workshops with low roof tie height that might restrict the height of lift of a regular bridge crane
Locations where bay lengths are excessive
Locations where bay lengths do not remain constant
Sites / projects where crane itself needs to be relocated from one place to another
Locations where loads are to be shifted from points outside the crane span as in the case of an overhang on either side of the rails 
  
 
In workshops where part utilization of shop bay is required (as in a tool room attached to a press shop), a Semi-Goliath/Gantry Crane is used. In such a configuration one end-carriage of the crane will travel on the regular gantry rail while the opposite end-carriage will travel on a rail mounted typically on the ground or at a lower elevation.
A Goliath/Gantry Crane is typically more expensive than an equivalent EOT Bridge Crane. However in almost all the relevant cases as mentioned above, a cost analysis shows that it is cheaper to go in for a Goliath / Gantry Crane as against a Bridge Crane. The cost analysis can be done by taking into consideration the following - 

Cost of Gantry Girders that are required in case of a Bridge Crane
Cost of Columns required for supporting the above Gantry Girders
Difference in costs of civil foundation for columns (for Bridge Cranes) versus civil foundation for gantry rails (in Goliath / Gantry Cranes)
Difference in Down Shop Leads cost of Bridge Crane versus Cable Reeling Drum and Cable Cost for a Goliath / Gantry Crane
Goliath / Gantry Cranes can be either of the Single Girder type or Double Girder type.

If required, Magco Cranes can advise end users of the type of crane to be installed based on a cost benefit analysis.
 
 
Range of Specifications