This standard specifies requirements and testing methods for fire-resistant low-smoke (FR-LS) cables used for fixed installations in power and lighting circuits up to 1100V. It ensures that cables maintain circuit integrity for a specified duration during a fire while emitting low levels of smoke and limited corrosive gases, thereby enhancing safety in buildings and critical infrastructure.
Specifies requirements for fire-resistant, low smoke cables intended to maintain circuit integrity under fire conditions, for voltages up to and including 1100 V.
Quick Reference Values
Maximum surface irregularity6 mm under a 3 m straightedge
Vertical Ball Rebound (VBR)80% to 90% of rebound from concrete
Minimum Dry Slip Resistance (PTV)80
Overall court slope (for drainage)0.5% to 1.0%
Pace Classification - MediumCPR value of 35 to 39
Minimum thickness of wearing layer1.0 mm for Type 4 & 5 surfaces
Key Formulas
CPR = 100 * (1 - e_v) + 150 * (1 - μ_h) — Court Pace Rating
Practical Notes
The substrate (asphalt or concrete base) preparation is critical for the final performance and longevity of the synthetic surface. It must meet its own strict evenness and slope requirements.
Court Pace Rating (CPR) is the primary determinant of the court's 'speed'. The choice of surface type and materials should be guided by the desired pace (Slow, Medium, Fast).
Installation of synthetic surfaces is highly sensitive to ambient temperature and humidity. Manufacturer's guidelines must be strictly followed.