Plenum and Parking Garages: Waterproofing Challenges and Solutions
https://wiki-net.win/index.php/Exterior_Envelope_Detailing:_Preventing_Weep_Holes_and_Ice_Damming
Waterproofing a building’s plenum and its parking garage is a study in managing competing forces. The plenum, a typically ventilated cavity that carries air and services, sits at the heart of the building envelope