Stair D section A-A source detail
Research representation: none. Architectural checks: pending.
Floor assignment pending
3 recorded properties
Still to extract or check- New section A-A local notes/witnesses do not settle the uncertain tread-material abbreviation, finish/core planes, headroom, profiles or any world-transform question.
- Complete fine dimension chains, rail/string/nosing profiles, fastener/gauge/material schedules and exact finish/rough endpoint classes remain partial.
- Installed instance/storey assignment, source-to-building registration, closed slab openings, headroom and independent physical checks remain outstanding.
- Companion W228 details and governing revision/installation applicability remain unresolved; source extraction does not approve model geometry.