Table 1 The difference in the definition of LOD between UK’s and Chinese

LOD1

Basic outline of the building/structure represented as a solid object using representative component information but with no architectural detail depicted

Carrying project, sub-project or partial building information

LOD2

outline of the building/structure represented as a solid object with principal architectural features included using generic components’

Modules or spatial information that carry full functionality¹

LOD3

Outline of the building/structure represented as a solid object with principal architectural features included using generic components’

Carrying single component or product information

LOD4

Detailed survey of the building/structure represented as a solid object including all architectural detail, services and custom developed components to accurately represent fabric type’

Carrying information on constituent or mounting parts that are subordinate to the component or product