Crane Lifting Optimization and Construction Monitoring in Steel Bridge Construction Project Based on BIM and UAV

Table 3

Key specifications of UAV.

Model name	ZR-60B
Number of axes	6
Wheelbase	1000 mm
Maximum flight speed	75 km/h
Maximum flight height	1000 m
Maximum flight time	45 min
GPS positioning accuracy	Horizontal accuracy: ±1.5 m	Vertical accuracy: ±0.5 m
Camera pixels	42 million