ABSTRACT
When a heavy lift erection of equipment requires two cranes of lower and higher capacities in a tandem operation for sharing the load, there is a necessity to calculate using the moment’s equation. An example is given to illustrate a situation where a bustle pipe main of 150 tons is considered for a tandem operation in a blast furnace construction. The load for the lower capacity crane should not exceed 50 tons, while for higher, it is 100 tons. A Load sharing principle in the construction Site helps if the Contractor does not have a single crane of larger capacity. Tandem operations are a risky method in Construction, as the rigging operations of two cranes need to synchronize, for which a foreman stationed at a vantage point sends manual signals to the crane operators in their respective cabins.
