5.00 m Sheet piling 9.00 m 1-00m 12.00 m 6-00m
Determine the water pressure at point A and B. Point A is 7m below datum. k=0.005cm/min
Given:
The point A is 7 m below datum.
The permeability constant, k = 0.005 cm/min.
The flownet is shown below,
Figure (1)
Calculate the equipotential drops at A and B.
From figure (1),
At point A, there are 3 equipotential drops.
At point B, there are 9.5 equipotential drops.
The formula to calculate the total head at A is,
The formula to calculate the total head at B is,
Here, hu is the total head on upstream side, hL is the total head loss and Nd is the equipotential drops.
The formula to calculate the pressure at A is,
The formula to calculate the pressure at B is,
Here, P is the pressure, h is the total head and z is the datum.
Calculate the total head on upstream side.
Calculate the total head on downstream side.
Calculate the total head loss.
From the figure (1), The number of equipotential drops is,
Step by step
Solved in 8 steps with 14 images
