The Metropolitan Atlanta Rapid Transit Authority (MARTA) has awarded a design-build contract to Archer Western Construction with WSP | Parsons Brinckerhoff as the lead designer to overhaul and upgrade its tunnel ventilation systems.
MARTA’s tunnel ventilation system covers approximately 14.5 km of metro tunnel and underground rail stations. The ventilation system includes a network of fans and dampers that effectively control and direct air flow during normal rail operations and in emergency situations.
The rehabilitation and renewal project will involve restoring the existing system to a state of good repair through a combination of repair, rehabilitation or replacement of tunnel ventilation equipment. The scope entails 16 tunnel segments with existing ventilation equipment.
As the lead designer, WSP | Parsons Brinckerhoff’s services include evaluation of the existing system to establish ventilation requirements based on the configuration of MARTA’s existing infrastructure and projected temperature ranges of a potential fire, preparing design and performance criteria for ventilation equipment, overseeing the factory testing of the manufactured equipment, and the acceptance and commissioning of the installed system.
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