A: Considering the following wave and soil conditions:
Wave condition: wave period T=10 sec, water depth d=20 m, and wave height H=3 m
Soil condition: ne=0.33, µ= 0.33, G=106 N/m2, Kz=10-5 m/sec at location z=5m (below the seabed surface)
Residual parameter, and α=0.246 and η=0.25
Which mechanism is more important? Why?
B: Considering an infinite seabed together with wave and soil conditions given in 3A, what is the maximum depth of the wave-induced residual liquefaction?
Task 2: Scour around pipelines
A: What is lived bed scour? What is clear water scour? What are the major differences between them?
B: What are the methods we use for protection to scour below pipeline?
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