IBC Requirements
Purpose of Installation Requirements for Suspended Ceilings
- Suspension systems strong enough to resist lateral forces imposed upon it without failing
- Prevent border panels from falling from the ceiling plane
| IBC Category | IBC Installation Requirements | |
|---|---|---|
| A, B | Ceiling installation should conform to basic minimums established in ASTM C636. |
|
| C | Installed to ASTM E580 Seismic Design Category C Minimum 7/8" wall molding Suspension system must not be attached to the wall molding Minimum 3/8" clearance on all sides Minimum 3/8" overlap of the suspension system on the wall molding Ends of main beams and cross tees must be tied together to prevent their spreading Safety wires required on light fixtures |
|
| D, E, F | Installed to ASTM C636 and ASTM E580 Minimum 2" wall molding Suspension system must be attached to two adjacent walls – opposite walls must have a 3/4" clearance Ends of main beams and cross tees must be tied together to prevent their spreading Heavy-duty suspension system Ceiling areas over 1,000 SF must have horizontal restraint wire or rigid bracing P | |