Seminar paper from the year 2017 in the subject Engineering - General,
Basics, grade: 1.5, University of Eastern Philippines, course: Civil
Engineering, language: English, abstract: To prevent internal erosion
and particle migration, control of seepage pressures and velocities must
be given due consideration in the design of hydraulic structures. The
percolation length (seepage) for a foundation can be determined by using
various methods. There are number of methods available to analyze the
problem on seepage and uplift pressure, and one of which is Bligh's
theory of creep. Other methods are Lane's Method, Kosla's Theory and
Flow nets. Based on Bligh's theory, that along the bottom contour of the
structure, the water creeps, and the percolation length (seepage) can be
determined. Lane's theory was patterned from the Bligh's creep theory
but according to Lane, Bligh had only calculated the total length of
creep by adding both the horizontal and vertical length of creep and
part of its limitation is it does not make any distinction between the
two creeps. Some experts had criticized Lane's method due to the fact
that it is an empirical method and not based on any mathematical
approach. However, the method is also widely used due to the simplicity
on its approach.
