Soil strength: drained and undrained shear strength (video).
Original title: "Drained and undrained shear strength" (23/09/2013 - YouTube).
Video designed and presented by Declan Philips PhD PE and Alan O'Reilly BEng. Faculty of Science and Engineering at the University of Limerick (Ireland).
Click https://youtu.be/BIPOyIXyY5o link to open resource.