Jacket on bottom stability problem

1/On bottom stability problem. Calculate only effective area in supporting jacket buoyant weight. This can be critical for overturning and soil bearing capacity. It needs iteration to find effective area especially for irregular mudmat shape.
2/Inadequate of mud-mate area of the jacket to withstand lateral pressure during unpile condition.
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Điều kiện biên dạng PIN như này có ổn không các bác?