The UK Building Regulations document covering structural safety - a building's ability to safely carry the loads it's designed for without collapse or excessive movement. Approved Document A works alongside the structural Eurocodes rather than replacing them - it sets the regulatory baseline while the Eurocodes provide the actual engineering calculation methods a structural engineer uses to demonstrate compliance. Structural columns, framing, and foundations modeled in Revit ultimately need to satisfy the load paths and safety factors this document requires.