The Operating Space Code of Tower Cranes
The horizontal and vertical distances of a tower crane are like its ID card information:
Horizontal distance: Refers to the length from the end of the jib to the center of the tower body, determining the area of the construction site the tower crane can cover.
Vertical distance: includes foundation height and free height; the former is the height from the ground to the first section of the tower body, and the latter is the maximum height of the liftable section.
Practical application: A tower crane with a horizontal distance of 60 meters can cover a circular working area of approximately 11,000 square meters.
Safety Rules for Two Tower Cranes Working Together
When two tower cranes are on a construction site, their spacing is like that of tango partners:
Horizontal spacing: Usually maintained at... Minimize tower clearance by at least 2 meters to prevent collisions during boom rotation.
Height difference: It is recommended to stagger the booms by 4-6 standard section heights to create a three-dimensional, overlapping workspace.
Dynamic monitoring: In windy weather, special attention must be paid to the risk of overlapping swing trajectories between two tower booms.
Practical considerations behind distance: These little-known details affect tower crane layout:
The rebar processing area is typically located in the golden area of the tower crane's coverage (70% of the horizontal distance).
When operating multiple towers, the lower tower's boom must not exceed the height of the higher tower.
For nighttime construction, anti-collision warning lights should be installed at the boom tip for more intuitive distance assessment.
