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Slope length

Distance from slope to caisson (8)

Significant wave height (₁)

Caisson height()

Caisson width (B)

Caisson density (2₁)

Coefficient of base friction ()

Water depth (A)

2m

10 m

2m

1.3m

7m

3m

2000 kg/m³

0.6

5m/nQuestion 2

An isolated pile with a diameter of 0.3 m is in water 25 m deep. Waves with a design wave height

of 0.5 m and period 12 s are propagating towards the pile.

a) is the design wave classified as linear, nonlinear, or breaking?

b) Determine the Reynolds number atz-h/2 and state the drag and inertia coefficients.

c) Using the Morison equation, plot the total pile force (Fr) and base moment (M) over two

consecutive wave periods.

d) Using your graphs from (c), state the maximum total pile force (Fr), base moment (Mr), and

equivalent point of application of the total force above the seabed (Z).

e) If the pile was instead part of a group oriented perpendicular to the flow direction (side-by-side)

with a clear spacing (S₂) of 0.5 m, determine the group factor (KG) and the maximum pile force

and moment.

Fig: 1

Fig: 2