What Is a Wick Drain Design?
Wick drains (the PVDs — the prefabricated vertical; the band's — the 4-inch) accelerate the consolidation (the clay's — the settlement's; the surcharge's — the preloaded) by shortening the drainage (the horizontal's — the 3-6 foot; the radial). The design: the spacing (the 3-6 foot — the triangular), the surcharge (the preload's — the 1.2x), and the monitoring (the settlement's — the plates'; the piezometers'). The clay's — the time compressed.
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How wicks work
The drainage (the radial — the shortened; the horizontal's — the 3-6 foot), the consolidation (the accelerated — the months'; the years' — the avoided), the surcharge (the preload's — the 1.2x; the settlement's — the induced), and the mandrel (the installed — the driven; the anchor's).
Design
The spacing (the 3-6 foot — the triangular; the Barron's — the theory), the depth (the clay's — the full; the penetration's), the surcharge (the 1.2x — the final's; the height's), the time (the 90% — the consolidation's; the Asaoka's — the predicted), and the smear (the zone's — the reduced; the accounted).
Monitoring and use
The plates (the settlement's — the surveyed; the Asaoka's), the piezometers (the pore's — the dissipated; the vibrating wire's), the inclinometers (the lateral's — the stability's), and the use (the embankments' — the highways'; the tanks'; the runways'). The wicks are the schedule's — the consolidation's time bought.
The bottom line
Design wick drains (PVDs) on 3-6 ft triangular spacing with 1.2x surcharge preload — monitor with settlement plates/piezometers; use Asaoka's method to predict 90% consolidation time.
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