What is the anle of internal friction for the sand

Reference no: EM13559210

1.A 20 cubic meter tank contains ultimate BOD at a concentration of 550 mg/L. If the BOD reaction rate constant is -0.42/day, what is the concentration of BOD remaining after 3.0 days?

2.Consider a cylindrical copper wire 3.0mm in diameter and 3x10^4 mm long. calculate its elongation when a load of 100N is applied. Assume that the deformation is totally elastic and its Young Modulus is 110GPa. Express your answer in [mm] to 2 decimal places.

3.A direct shear cell 25.4cm x 25.4 cm in plan is filled with dry sand. a normal load of 6kN is applied to the sample, and the shear failure is 3.5kN. What is the anle of internal friction for the sand?

Reference no: EM13559210

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What is the anle of internal friction for the sand : A direct shear cell 25.4cm x 25.4 cm in plan is filled with dry sand. a normal load of 6kN is applied to the sample, and the shear failure is 3.5kN. What is the anle of internal friction for the sand?

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