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Early programming and site analysis focus on constraints that shape circulation, code compliance, and accessibility before design formalities like finishes or vendor selections are considered. Topographic gradients between parking and the main entry directly affect accessible route design, ramp requirements, and stair/landing placements in accordance with accessibility standards and local codes referenced by interior projects. The slope informs allowable rise, run, landings, handrails, and transitional areas, impacting both exterior and interior thresholds. While product preferences (automatic doors) may enhance usability, they cannot mitigate an excessive slope or noncompliant approach. Nurse station locations are a downstream space-planning decision, and finishes are even later-phase considerations. Evaluating grade differentials early avoids costly rework, supports compliant path-of-travel design, informs door thresholds, vestibule configurations, and canopy placements, and can also influence the main floor elevation if site and building entries must align. Therefore, understanding topographic gradients between accessible parking, drop-off areas, and primary entrances is the most critical initial data point to ensure feasible, code-conforming access that aligns with program objectives for an outpatient clinic.