This document specifies guiding principles for project design and implementation and for the integration of other systems into the building automation and control systems (BACS). This document specifies the phases required for the BACS project, including design (determination of project requirements and production of design documents including technical specifications), engineering (detailed function and hardware design), installation (installing and commissioning of the BACS), and completion (handover, acceptance and project finalization). This document also specifies the requirements for as-built documentation and training. This document is not applicable to operation and maintenance, nor is it applicable to retro or continuous commissioning, including a commissioning authority.