Stair C basement-to-first source-local flight register
Research representation: none. Architectural checks: pending.
Basement · First floor · Original mark: C
22 recorded properties
Still to extract or check- Upper flight tread/riser count needs close-up verification
- Riser height, nosing and rail geometry
- Full fine dimension chains and witness endpoint classes
- Source-to-building registration, slab openings and installed instances
- Companion details, revision authority and independent physical checks