The PMBOK ® Guide describes specific knowledge and practices generally recognized as good practices on most
projects most of the time. The Construction Extension describes supplemental knowledge and practices that are
generally accepted as good practices on construction projects most of the time. The Construction Extension includes
Knowledge Areas specific to the construction industry, which do not appear in the PMBOK ® Guide: Project Health,
Safety, Security, and Environmental Management; and Project Financial Management. As described in Section 3,
these Knowledge Areas are aligned with the Knowledge Areas and Process Groups in the PMBOK ® Guide. Processes,
tools, and techniques are not replicated and only construction-specific practices are specifically described.