Roof drainage systems for low slope buildings have based their design requirements on a "60-minutes, 100-year storm". Code requirements for sizing roof drainage do not plan on severe rainstorms / climate change. This presentation will focus on why designers and contractors may be contributing to a potential roof collapse and solutions for improving roof drainage. The presentation will discuss the flaws in the current code, where low slope drainage design can improve by designing low cost upgrades and potentially save lives by avoiding a roof collapse.
Robert Hemphill is a Senior Consultant with Aquatech Consultancy, Inc.. Robert is an International Institute of Building Enclosure Consultants (IIBEC) Registered Building Enclosure Consultant (RBEC)—one of two in California—conferred after having achieved the Registered Roof Consultant (RRC), Registered Waterproofing Consultant (RWC), and Registered Exterior Wall Consultant (REWC) credentials. Mr. Hemphill is a Construction Specifications (CSI) Certified Document Technologist (CDT) and maintains his California Contractors License.
Bob is a member of American Institute of Architects (AIA), Asian American Architects and Engineers (AAAE), Community Association Institute (CAI), CSI, Educational Community For HOA Homeowners (ECHO), IIBEC, Roofing Industry Committee on Weather Issues (RICOWI), Western Construction Consultants Association (WestCon), and Western States Roofing Contractors Association (WSRCA).