Wind Engineering

Pedestrian Comfort

Air Quality

Exhaust Stack & Air
Intake Solutions

Sun / Shade / Glare

Snow Engineering

Ventilation

Noise, Acoustics & Vibration

Hazard & Risk

Computational Fluid Dynamics (CFD)

Regional Airshed Modeling

Regulatory Permitting

Stack & Field Testing

Laboratory Services

Master Planning

Sustainable Design

Protective Ventilation
Market Sectors

 Tunnels
RWDI brings a wide variety of environmental and ventilation capabilities and transportation experience to designers of vehicular tunnels.

Air Quality

Exhaust from cars, trucks, trains, and buses at tunnel portals may impact on nearby environments, residences, and pedestrian areas. The negative effects of exhaust can be reduced if mitigative measures are implemented in the design of such transportation routes.

Internal Ventilation

Air quality in road tunnels is affected by both the amount and distribution of ventilation air. Correct design insures proper air distribution and can reduce outside air and energy requirements.

Noise and Vibration

Government agencies require noise impact statements for new transportation facilities. Sound / vibration may affect residential developments near transit routes. Mitigative measures can eliminate or reduce these impacts.

Accidental Spills and Explosions

Spills or explosions in heavy traffic and near populated areas can create potentially dangerous situations identification and. Assessment of risk, designation of escape routes, refuge areas, and response times can be facilitated through various modeling techniques.

Fire Safety

Fire safety and smoke control are important issues in the design of tunnels. In the event of a fire, ventilation systems must be designed to ensure safe escape paths and to minimize property damage.
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