How this node works
At the wall the ceiling ends on a perimeter angle or a shadow-gap trim; a movement gap lets it expand without buckling. Where fire resistance is asked of the ceiling, the membrane is turned up the wall to close the line and keep the compartment continuous.
Key points
- Wall
- Perimeter angle / shadow-gap trim
- Grid (cross tee)
- Acoustic panel
- Movement gap
- Fire membrane (turned up)
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.