b'Construction briefingReusing requirementsOnce requirements are neatly captured in a digital model, it becomes possible to reuse them for new projects (see also page 105). This can help to speed up briefing processes and to create a degree of consistency across projects.There are two ways of doing this when working with a requirements database. The first one is to create a requirements template for a particular building type that can be cloned or copied in its entirety for new projects. This approach works for repeat clients who are doing projects that come with few local, project-specific modifications (e.g. retail outlets or data centres). The second way is to work with a requirements library: a model that contains standardized objects, e.g. common spaces such toilets and meeting rooms, or generic elements such as access systems and power sockets. From such a library, it is then possible to pick and choose the objects that are relevant for the project and, thereby, to configure a project brief.Both approaches are efficient, but, as pointed out earlier in this book, the reuse of requirements is not free of pitfalls. Think, for example, of an erroneous requirement that is replicated across projects. To avoid such problems, it is important that there is an owner of the requirements who is responsible for managing, updating, and improving the set of requirements.Library model Project modelStandard meeting spaces Conference centerMeeting room type A EntranceMeeting room type B LobbyMeeting room type C Meeting room Event spaceStandard sanitairy spacesKitchenetteToilet type A ToiletToilet type B Furniture storageRequirements libraryIn the diagram above, you see a small example of a project model for a conference centre, where two spaces (meeting room, toilet) have been picked from a library model and automatically come with all the detailed requirements associated with those rooms. In similar fashion, one can think of reusing design principles, technical elements, verification plans, and other kinds of briefing information. 175'