4.1.8.12.(9)

Intent 1:

To limit the probability that the base shear used for the design of structures requiring dynamic analysis due to their irregularity will be based on a value that does not fully capture the influence of irregularities on the structures' behaviour during an earthquake, which could lead to a base shear value that is lower than it should be, which could lead to:

• the excessive deformation of, or excessive stress in, the structural elements, which could lead to damage to the building, or
• the excessive deformation of, or excessive stress in, the building structure, which could lead to damage to the building, which could impede the intended use and occupancy of the building.