1.1 This national standard is applicable to the power-driven bridge crane, portal crane, handling bridge, span winch, tower crane, barge crane, crane having the hoisting mechanism of electric block, deck crane, crawler crane, wheel-mounted crane, autohoist and cable crane.
Note: The barge crane and deck crane shall meet requirements in marine codes.
1.2 This national standard is the necessary rule and technical basis for the design calculation of the crane, but it doesn't include particular problems during the design of the crane. Other design calculation methods that have proven correct by the theory and practice, after the approval of the design department and the user, can also be adopted during the design of cranes. All kinds of professional design rules for crane and standards can't go against this national standard.
1.3 The establishment of this national standard has referred to Hoisting Equipment-Classification (ISO 4301-1980), Crane-Estimate of Wind Loading (ISO 4302-1981), Mobile Crane-Determination of Stability (ISO 4305-1981), Crane-Selection of Wire Ropes (ISO 4308-1981) and Test Specifications and Procedures of Crane (ISO 4310-1981) by the International Organization for Standardization (ISO).
