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[saroj]

Dear Sefians

Due to negligence or error, a bridge at some hilly area was designed with well foundation of depth 20 m from the river bed, but during sinking, bed rock was found below 12 m from the present bed level. It is very difficult to continue sinking and probably that's worthless. The hydraulic analysis shows heavy future scour of about 8 to 9 m from the present bed level.

Now, can we analyze the stability of the well in such condition? What could be the appropriate solutions? I am thinking of anchoring the bottom plug with grouted steel bars but don't know how to design it.

Would be grateful if someone help me!

Thanks

Saroj Bhattarai