Building systems refer to the organized methods and processes used in the construction and management of buildings. These systems encompass various components, including structural, electrical, plumbing, and HVAC (heating, ventilation, and air conditioning) systems. Each component must work together efficiently to ensure the building is safe, functional, and comfortable for its occupants. In addition to physical components, building systems also involve project management practices that guide the planning, design, and execution of construction projects. This includes the use of software tools for scheduling, budgeting, and resource allocation, which help streamline the construction process and improve overall project outcomes.