How should structural systems coordinate with architectural design in PDD?

• A. Through early collaboration to align column grids, loads, and occupancy with architecture, ensuring constructability, cost efficiency, and performance.
• B. By deferring structural decisions until construction.
• C. By letting the architect decide structure after design.
• D. By ignoring architectural constraints to optimize structure.

Answer: (C)

Coordinate structural systems with architectural design from the outset. Early collaboration between the structural engineer and the design team ensures column grids, load paths, and occupancy align with the architectural program and aesthetic intent, while also keeping the project constructible and cost-efficient. By integrating structural decisions during schematic and design development, you can reconcile how spaces are formed, how materials will behave, and how services and finishes fit, all without costly late changes. This coordinated approach supports performance goals such as stiffness, vibration control, fire and safety requirements, and overall building behavior, while preserving architectural vision.

Delaying structural decisions until construction or letting the architect proceed without structural input undermines coordination, risks clashes and rework, and can drive up cost and schedule. Similarly, ignoring architectural constraints defeats the goal of a cohesive, buildable design. In practice, this means cross-disciplinary reviews, shared models, and ongoing dialogue throughout early design phases to guide choices that satisfy both structural and architectural objectives.