Geotechnical Engineering · Lesson 25 of 27

Vertical Drains and Preloading

How a temporary surcharge preloads soft clay and how prefabricated vertical drains slash the consolidation time by shortening the drainage path from vertical to radial, covering the equivalent drain diameter dw = 2(a + b)/pi, the influence diameter de, Barron's radial degree of consolidation Ur = 1 - exp(-8 Tr / F(n)), the smear zone, and Carrillo's rule for combined vertical and radial flow.

15 min read · Super Ea