A ?m deep underpass is being constructed along a canal. The bed level of canal is 1.5 m above the 6.5. If canal flows full the depth of water in canal is 1.3 m. A 15m deep sheet pile wall is designed to protect the seepage into the underpass. There is impermeable layer of soil 5m below the tip of the sheet pile wall. If permeability of the retained soil is RxlD'gcmfs then investigate the water pressure on sheet pile wall and seepage through underlain soil of sheet pile wall. Consider Nd =13 and Nf=4. Moreover How variation in Nd and Nf will affect the seepage and pressure calculation. 10