11:1 Pipe Flow - Irregular Section Conduits and Type I, II and III Problems

Round-10 hunt: picked; channel-level screens (sellers/exam/re-upload/devotional/vendor/events) and provenance check passed; strict per-title check + final strict pass; oEmbed verified.

A 49-minute video from Derek Elsworth: “11:1 Pipe Flow - Irregular Section Conduits and Type I, II and III Problems”.

Video by Derek Elsworth, played through YouTube's embedded player.