floorplan·Architectural Graphic Standards · US NCS v6·hospitality·complexity 2/3·since v0.9.3
Garden ceremony — semi-circle seating
Outdoor ceremony seating: four concentric chair arcs facing the arch (104 chairs), placed with one arc statement per row.
For the wedding planner staking out ceremony rows on site
What this shows
Each row is one arc chair statement — count, center, radius, and the 20°–160° sweep — with every chair rotated to face the center. Capacity changes are a count edit; the validator's oriented-box collision test keeps adjacent chairs honest even though they're all rotated differently.
This is the "Semi-Circle Wedding Seating" request class verbatim: the input arrives as a chair count and a focal point, which is exactly what the arc primitive takes.