Parametric Stair Detail Section with Adjacent Floor Layouts

This drawing depicts a schematic sectional detail of a staircase connecting two floor levels, with adjacent floor plan layouts. The drawing uses parametric dimension references (d1 and d2) which suggest a modular design approach where these dimensions can be adjusted based on project requirements. The main staircase element appears to include approximately 3-4 steps connecting the upper and lower floors. The arrangement shows a clear circulation pattern between the two rectangular spaces, with d2 appearing to control the width of both upper and lower floor areas, while d1 likely governs a critical vertical dimension or clearance height. The simplified linework suggests this is a preliminary design schema rather than a detailed construction document; however, it effectively communicates the spatial relationship between levels. The metric-based design (units in meters) indicates this follows international construction standards, with the overall drawing dimensions of approximately 13.8m × 8.9m suggesting a medium-sized residential or small commercial application.