Crane such as this are often attached to the building
Cranes (such as the one to the left) require aeronautical review and subsequent FAA approval if they are extending above the project. TowerSAFE International can perform a full analysis to determine what effect it may have on the surrounding airspace but can file all necessary documentation to gain FAA approval inclusive of necessary NOTAMs (Notice to Airmen).
Mobile Cranes normally operate at full height during daylight hours and are lowered at night. Normally some marking is required by day; and, with airports and landing paths in the area, they may require NOTAMs.
Extended Boom on Crane Truck
Las Vegas...A good place for a Airspace Convention!