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Mr. Lawrence Magura, P.E., BC.WRE(Ret.), F.ASCE

Contributions

1 to 3 of 3 total

RE: Upcoming Fish Passage Webinar Dec 5 Webinar at Noon Eastern

Posted By Lawrence Magura 11-26-2019 05:17 PM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread

Still waiting for the call-in information, Mark. ------------------------------ Lawrence Magura P.E., D.WRE(Ret.), F.ASCE OWNER Lake Oswego OR ------------------------------

RE: Cleaning and Relining Pipes vs. Replacement

Posted By Lawrence Magura 07-28-2018 02:12 PM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread

Years ago, I served as a regional engineer for the Ductile Iron Pipe Research Association (DIPRA). I bet I handled dozens of questions similar to yours. The best answer we came up with is "it depends." On what? Does the pipe have an internal or external corrosion problem? You don't indicate which is ...

RE: Oroville Dam - worst case scenarios

Posted By Lawrence Magura 02-15-2017 12:15 PM
Found In Egroup: Environment, Coasts, Oceans, & Infrastructure \ view thread

Of perhaps greater concern to me is what was the proximate cause of the failure of the primary spillway? I've stood at the bottom of the chute in the past, and it resembles a giant ski jump. Did the spillway slab settle and crack just enough to create a lip that served as a nick point that allowed cavitation ...