CL Construction Abbreviation

Clearance

 Authorization given by ATC to proceed as requested or instructed (for example “Cleared for take-off”, “Cleared for visual approach”, “Cleared to land”) or Minimum distance from the extremity of a crane to the nearest obstruction.  Or The gap between two mating parts or the space provided between the relief of a cutting tool and the surface being cut. or The control and positioning of plant equipment for providing protection for personnel and equipment during work on plant devices.

Cat Ladder

Class

The different broad groups in society, defined according to what work they do, their wealth, their degree of control over production, and their general role in the economy.