Tunnel Systems Design Services

Parsons offers world-class services in systems design of underground facilities:

• Ventilation systems design, including the full scope of ventilation technology:
• Full-transverse
• Semi-transverse
• Longitudinal system



• Fans, including the latest technology based on the use of jet/booster fans:
• Lighting system design
• Fire and life safety analysis and design of mitigation measures
• Security vulnerability analysis and design of sensor and hardening systems



• Inclined, vertical, and horizontal access systems:
• Elevators
• Escalators
• Inclined elevators
• Moving walkways



• Drainage and pumping systems

• Computer analysis of the subsurface environment:
• Subway Environmental Simulation computer modeling program
• Smoke analysis simulation using the leading Computation Fluid Dynamic computer simulations for smoke control designs



• Design of traffic control and management systems for vehicular tunnels

• Design of all electrical/mechanical systems for the water/sewer and soil tunnels