Structural irregularity - jcgomezz/Building_taxonomy GitHub Wiki

Structural irregularity is a feature of a building's structural arrangement, such as one storey significantly higher than other storeys, an irregular building shape or a change of structural system or material, that produces a known vulnerability during an earthquake. The user can choose a maximum of two vertical and two plan irregularities for a building. However, if a building has two irregularities of the same type (plan/vertical), the user needs to prioritize them by identifying the primary irregularity first and the secondary irregularity next.

If least one structural irregularity (plan and/or vertical) is present, then the building is classified as irregular. Otherwise, it is either classified as regular, or an unknown structural irregularity is provided.

Unknown structural irregularity IRR99

Regular structure IRRE

Irregular structure IRIR