Question

The shearing of cohesive soil in drained test requires ___________ days.

(a) 2

(b) 1 to 2

(c) 2 to 5

(d) 1

The question was asked in a national level competition.

This intriguing question originated from Direct Shear Test topic in division Shear Strength of Geotechnical Engineering I

Answer 1

Correct option is (c) 2 to 5

For explanation I would say: As the soil in drained test is sheared sufficiently slowly so that complete dissipation of pore pressure takes place, it takes 2 to 5 days long for shearing cohesive type of soil.