GATE 2023 Soil Mechanics & Foundation Engineering Quiz 70

The process of recording the resistance to the driving of bearing tubes as a quick site exploration is

What is caused by the addition of coarser particles like sand to clay?

Two samplers have area ratio 10.9% and 21%. Which one is recommended for better soil sampling.

Statement (I):- The outside clearance of the sampler usually lies between 0 and 2 %.

Statement (II):- The outside clearance is meant to reduce friction between the soil sample and the sampler when the soil enters the tube, by allowing for elastic expansion.

Codes:

What will be the area ratio of a split barrel sampler having inside diameter of cutting edge as 35 mm and outside diameter of cutting edge as 51 mm. Take inside diameter of sampling tube as 38 mm.

Consider the following statements -

1. Uniaxial geogrids are used as reinforcement layers in retaining walls and embankment.

2. Biaxial geogrids are used in road bases and below rail tracks.

Which of the above statement is/are correct?