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Detailed Narrative Description of Project & Services provided:
This Transfer Tunnel consists of a new 300’ underground East-West Tunnel connecting the existing State/Roosevelt Red Line Underground Subway with a 105' North-South extension to the exiting ground level station house for the Green/Orange Line. The project includes an addition of station House, elevator, escalator and stair. Removal of fuel tanks and contaminated soil from the project site as per EPA/CDOE guidelines. Reconstruction of Michigan Avenue including repair and connection of water and sewer lines. Architectural finish of subway and elevated station houses.
Design Consulting Engineers (DCE) served as a prime engineering consultant to the city of Chicago, Bureau of Bridge and Transit and monitored all phases of constructions submittals, responded to field information, coordinated design and field construction meetings, documented construction work, recorded field measurements and quantities, reviewed contractors pay request and maintained record book.
On this project, DCE also provided Mechanical and Electrical system design, inspection, equipment selection and installation for:
1. Fire Monitoring & Alarm System:
The existing fire and smoke detector system of the project did not meet with the Fire Building Code requirements of City of Chicago. This system was updated to meet the new building code requirements with the installation of addressable smoke detection and alarm system with 24 hour fire monitoring services co-ordinate CTA and Fire department.
2. HVAC system for Elevator & Machine Room:
DCE provided services to design the ventilation system with exhaust blowers and electrical heaters. A roof mounted exhaust fan with 1200CFM capacity and 2 electrical heaters were provided for the machine room
3. UPS System & CCTV System:
DCE provided the services for the selection of Uninterrupted Power System for the underground tunnel in the event of electrical failure. Close Circuit TV System for safety and security of the tunnel and in build music system are other salient features of this outstanding project.
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