b'Briefing and BIMTypicalsIn large and complex projects, it will be useful to predefine a set of typicals for the requirements model: standardized spaces that can be used as the building blocks for the total space list. Think of patient rooms in hospitals, classrooms in schools or workspaces in office buildings. Such spaces will occur in large numbers in a project and will, more or less, have the same requirements e.g. in terms of size, indoor climate, fixtures and fittings.Such typicals can then be instantiated when defining the spatial needs per department or building part. These spaces will then have the same requirements as the typical from which they are derived. So, if a standard patient room has a requirement that it should be at least 12 square metres, this requirement will automatically apply to all the patient rooms that are based on this typical. Also any later changes will automatically apply to all the derived spaces. In database lingo, this mechanism is called inheritance.It is important, however, that this inheritance mechanism is flexible so that you still can make small changes to specific spaces at an instance level (e.g. a change to a spaces furniture set-up) without having to define a new typical for that purpose. Such changes should then be explicitly marked as deviations as it concerns crucial information for the design team. Total spacelist TypicalsBuildingStandard Department A patient roomsize: 12 sq.m. NUA \x02nishes: easy to clean Patient roomfurniture: 1 bed; 2 chairs temp (summer): max.22C0Department BPatient roomDepartment CPatient roomTypicals and instancesThe diagram above shows how a typical patient room is used at multiple places in the total room list. Software routines will ensure that all these rooms have the same requirements. 172'