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NFPA 1221 / IFC 510 Coverage Compliance Simulator

Simulate a 5×5 grid of test points on a building floor and evaluate NFPA 1221 Section 9.6 / IFC 510.4 coverage compliance. Adjust BDA parameters and per-zone penetration losses to reach 95% area coverage.

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NFPA 1221 / IFC 510 — COMPLIANT

25/25 test points pass both inbound & outbound (need 24/25 = 95%)

100%

System Parameters

Donor RSSI-80 dBm

BDA Gain65 dB

BDA Max Output24 dBm

Donor Cable Loss3 dB

Indoor Antenna Gain3 dBi

Distribution Splitter

Building Penetration Losses

Base Penetration Loss (interior)8 dB

Outer Zone Extra Loss6 dB

Outbound Pass25/25 (100%)

Inbound Pass25/25 (100%)

Both Pass25/25 (100%)

Required≥24/25 (95%)

Test Point Grid — Outbound RSSI

25/25 test points passing100% coverage

≥ −70 dBm (Excellent)

−80 to −90 dBm (Acceptable)

−90 to −95 dBm (Minimum)

< −95 dBm (Fail)

NFPA 1221 Section 9.6.3 / IFC 510.4.1.1: In-building coverage systems shall provide a minimum signal level of −95 dBm (inbound and outbound) throughout 95% of the building's floor area. Critical areas (stairwells, elevators, basements) typically require 100% coverage — test those separately.