Continuing building through several projects

For example, design, construction, operating retrofit, and heritage-restoration Work can concern one continuing building while using different plans, transformer Systems, access arrangements, and evidence. In an occupied retrofit, the engineer selects the continuing building because its occupied performance is being changed and records access during use as the main unresolved assumption.

Several descriptions of the building do not create several Systems or projects. Conversely, one programme does not become the performer of all Work. Each project account states its own reason for selecting the building and can reopen that choice without inventing a birth-to-retirement order.