2/3 Tests Revision

Question 1

Shear Box Test

Answer 1

• Soil put in metal shear box
• Box is split into two halves horizontally
• Normal force applied at top of box
• Shear foce applied by moving one half of the box relative to other to cause failure in soil
• Pros: quick, simple, easy to prepare, easy to analyse
• Cons: fails from chosen plain not weakest, failure may not always be horizontal

Question 2

Shear Box Test Parameters

Answer 2

• Cohesion
• Angle of friction

Question 3

Liquid limit

Answer 3

Possible mention of penetrometer

Question 4

Labelled Drawing of Three Phase Soil System

Answer 4

Dry
Partially Saturated
Fully Saturated

Question 5

Unit Weight of Water

Answer 5

9.807 Kn/m3