770
Ceiling Performance Specifications: Performance Criteria
775.2.5
Surface Characteristics
The ceiling shall have a finished surface with the following characteristics:
1. A minimum reflectance of 80, and low gloss.
2. High resistance to abrasion, moisture, cleaning and disinfectant
materials, staining, fading, and impact.
3. Easily repaired and patched.
The ceiling shall have the capability of supporting standard types of
radiation and electrostatic shielding.
775.2.6
1. Ceiling framing, stiffening ribs and the like, if required by the design,
shall not protrude above the walking surface of the platform more than
one foot at any point. Such elements shall not place undue restrictions
on the location of partitions; ideally, there would be no restrictions.
2. The ceiling shall be attached to the hangers by leveling devices
capable of adjustment to provide a level lower surface during
construction, and periodic readjustment throughout the life of the
building.
775.2.7
Provision for Plenum
The ceiling shall be airtight under pressure differentials produced by
utilizing the service zone as a return air plenum.
3 - 240
Previous Page
