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Stephen Patterson and Madan Mehta - Unprecedented Change in Roof Drainage Design

IIBEC - Stephen Patterson and Madan Mehta - Unprecedented change in roof drainage design

 

S3:E46

In this Roofing Road Trip, Heidi J. Ellsworth meets with Stephen Patterson, RRC, PE and Dr. Madan Mehta, PE, PHD about the unprecedented change in roof drainage design.  A new publication on Roof Drainage – Second Edition, this book was funded by the CI-IIBEC Foundation.  They will share how in this second edition; they are responding to an unprecedented change in roof drainage design from what has been used for more than a half century. Until recently, the plumbing codes assumed that the flow through a roof drain is the same as the flow through a vertical leader of the same diameter. Several investigations and roof-collapse forensics have shown that our assumption has been incorrect.  Don’t miss this extremely important discussion.

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