规定了通过计算验证ISO 4306-1中定义的所有起重机类型的稳定性时应满足的条件，这些起重机类型会发生倾斜。它假设他们站在稳固、水平的支撑面或轨道上。起重机在轨道上的滑动不包括在内。

Specifies the conditions to be met when verifying, by calculation, the stability of all crane types defined in ISO 4306-1 that are subject to tilting. It assumes that they are standing on a firm, level supporting surface or track. The sliding of cranes on their tracks is not covered.