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Sub-surface Drainage:
Sub-surface drainage is intended to take away the water seeping through the pervious layers of the soil, causing a high water table, or in cut slopes of hills. The arrangement usually consists of a trench, at the bottom of which is laid a perforated or porous pipe. The trench is filled with stone aggregates. Figure shows a sub-surface drain in a hill slope, which drains away the water and prevents landslides and slips. Figure shows a sub-surface drainage system for lowering the water table.
Figure : Subsurface Drain at Cut Slopes
Figure : Sub-drains for Lowering Ground Water Table
What is Froude Number? Used to determine if the flow is rapid, critical or tranquil. Fr = 1 critical flow; Fr 1 supercritical flow In rectangular open channels: Fr =
WHAT IS FLYBBACK LEVELLING
In case of simple bending after simply supported beam, derive that M/I = s /y = E/R.
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The loading period for a building extended from Feb., 1957 to Feb., 1959. In Feb., 1962, the average measured settlement was found to be 117 mm. The ultimate settlement was expecte
While calculating Active Earth Pressure, do Coloumb''s Theory and Rehbann''s theory yield same results? I''ve tried and didn''t get the same results. Where might be the mistake?
Ductility Test: The ductility of a bituminous binder is its ability to deform under load and return to its original condition after removal of the load. The property is deter
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Q. Explain Forty-five degree spread rule for driven piles ? For driven piles the length of piles driven into the ground is generally based on dynamic driving formula such as Hi
In order to determine the water content of a wet sand, a sample weighing 4 N was put in a pyknometer. Water was then poured to fill it and the weight of the pyknometer and its con
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