Consider the following long sheet-piled trench built within a uniform sandy ground of 18 m in depth, overlying an impermeable clay layer.

2.1 Sketch a flownet. Ensure your sketch is made to scale. Show the values of N_F and N_H for the flownet in your sketch.                                                        

2.2 Based on the flownet sketched, determine and sketch the water pressure acting on the sheet pile wall.

                                                                                   

 

Transcribed Image Text:

Sheet pile Constant external Constant external water level water level 6 m Pumped water level 6 m 5 m Uniform sand 6 m "Impermeable' clay Figure 1: flownet Sheet pile Constant external Constant external water level water level 6 m Pumped water level 6 m 5 m Uniform sand 6 m "Impermeable' clay Figure 1: flownet