When the crane is lifting materials from the Construction Staging Area, what is the chance that the materials could hit the building?
There is very little chance. The crane rules are set up such that the longest edge of any material will be 20 feet or more from the building. There are also rules in place around the use of cranes on windy days. If there is any risk of wind increasing the risk to the building or people underneath, then the crane use will be suspended.