(c) Figure 23 shows a large column of sand in a tube surrounded by water. Note the water level inside the tube is initia

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C Figure 23 Shows A Large Column Of Sand In A Tube Surrounded By Water Note The Water Level Inside The Tube Is Initia 1 (47.15 KiB) Viewed 94 times

(c) Figure 23 shows a large column of sand in a tube surrounded by water. Note the water level inside the tube is initially at the same level as the external water. Draw the variation of total, pressure and elevation heads on the graph to the right when: 3 () The water levels are as shown. (1) When the water level surrounding the tube is lowered by 7 m but the water remains at the same level in the tube. (iii) What is the pore pressure at "Y" (mid depth) when the water surrounding the tube is lowered by 7 m 5 3 Elevation Elevation 2m Бm Datum im Head (m) Head (m) Before Figure Q3 After