How to Achieve Fire-Rated Certification for Custom Ceiling Designs.

Focusing on 'How to Achieve Fire-Rated Certification for Custom Ceiling Designs.', this article is organized in the order of 'problem identification—materials and construction—construction control—acceptance and maintenance', providing directly executable parameters, methods, and checklists, making it convenient for design, procurement, construction, and operation & maintenance teams to directly reference on-site management.

1. Where the Integrity of Fire Compartments Comes From

Whether a fire compartment can be established depends on whether the walls and ceilings are continuous, whether the penetrations are sealed, and whether doors, windows, and access panels meet the corresponding fire resistance rating. Any improperly handled opening can reduce the overall fire resistance of the compartment.

2. Sealing of Penetration Areas

3. Connection Between Ceiling and Partition Wall

The partition wall should extend to the bottom of the slab, and the part of the partition wall within the ceiling must not be interrupted. Reinforcement and sealing at the connection between the ceiling and partition should be done according to system requirements to avoid forming continuous cavity channels.

4. Acceptance and Documentation

• Verify whether the system test report matches the actual construction.
• Check the sealing of each penetration and take photos for records.
• Check the rating labels of fire doors, windows, and access panels.
• Complete acceptance before they are concealed, to avoid being unable to check later.

The reliability of fire compartments comes from the continuity of details. Only by properly handling each opening and junction can the system truly be established.