B-R05
Drop-spine boxes — Reference record
A drop-spine structure provides a supported opening route. Interior clearances and hinge behaviour should be described independently.
| Reference record | Working notes |
|---|---|
| Overview | Drop-spine boxes |
| Practical example | Show closed, opening and supported-open views of the same reference structure. |
| Limits and interpretation | Do not force the lid or spine of an actual enclosure to match an illustration. |
| Document control | Reference edition 2026.11 |
Measurements and examples are descriptive, not acceptance criteria.