🛑 NFPA 502 Massive Point Extraction (100 MW Scenario Exhaust CFM, Damper Spacing)

Tunnel Massive Point Extraction Calculator

Size massive point extraction smoke management systems with motorized drop-down high-temperature dampers located in intermediate false ceilings above road tunnels under NFPA 502: calculate localized exhaust rate (extracting >250,000 CFM directly over the fire zone to confine toxic gases to a single 300-ft section), damper spacing, and tunnel life safety profits.

1. Project & Operating Inputs

Extraction Damper Stations (Station Count e.g. 18 Ceiling Damper Sets)

Peak Smoke Extraction Capacity (CFM e.g. 280,000 CFM Total Extraction)

Customer Bid Price for Supplied & Commissioned Damper Array ($)

Stainless 400°C Fire Dampers, Pneumatic Fast Actuators (<5s), DDC Panels ($)

2. Financial Breakdown & Yield

POINT EXTRACTION SMOKE CONTROL

Turnkey Point Extraction Damper Profit

Tunnel Fire Safety Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost