Roof and plaza deck locations in most cases fail first at transitions

https://wikibuilding.org/index.php?title=Below-Grade_Waterproofing_Essentials_for_Commercial_Basements_and_Parking_Garages

Roof and plaza deck places regularly fail first at transitions. Detailing at parapets, scuppers, and drains is indispensable to manage water motion and steer clear of hidden leaks.