The Structural Concept Design Phase represents a foundational stage in the development of a building’s structural system. During this phase, the structural engineer evaluates the architectural vision, building program, and site conditions to propose viable structural strategies that support safety, functionality, and constructability. Key decisions include selecting the structural system type—such as reinforced concrete, structural steel, or composite framing—determining preliminary grid layouts, identifying lateral load-resisting systems, and estimating foundation requirements based on geotechnical inputs.

This phase is inherently interdisciplinary. Structural engineers work closely with architects to align load paths with spatial organization and aesthetic goals. Coordination with mechanical and electrical engineers is critical for accommodating shafts, service zones, and penetrations. The objective is to create a robust structural framework that integrates seamlessly with the architectural form and building systems.

Outcomes of this phase typically include conceptual framing plans, schematic sections, structural system narratives, initial load estimates, and feasibility assessments. These outputs serve as the structural basis for design development and cost planning. The Structural Concept Design Phase is crucial for setting realistic expectations, identifying potential constraints early, and ensuring that structural integrity is embedded into the design process from the outset.