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Geotechnical Engineering II Mcqs

Q:

The geostrips are generally produced from ________

A) glycerine B) polypropylene
C) dextrin D) benzene
 
Answer & Explanation Answer: B) polypropylene

Explanation: The geostrips are a type of geotextiles. As per American Society for Testing and Materials (ASTM), the geotextiles are permeable sheets of synthetic fibres like polypropylene, polyethylene etc.

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296
Q:

Geotextiles are ____________

A) permeable B) semi-permeable
C) impermeable D) does not permeability characterises
 
Answer & Explanation Answer: A) permeable

Explanation: Geotextiles are porous fabrics and hence they are permeable. They are made from synthetic materials that are used with geotechnical materials like soils or rocks as an integral part.

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193
Q:

By the use of reinforcing elements in earth __________

A) it restrains lateral deformation B) it provides lateral deformation
C) it produces shear stress D) it produces shear failure
 
Answer & Explanation Answer: A) it restrains lateral deformation

Explanation: The reinforced soil concept is based in the mobilization of inter facial shearing resistance between the soil and the reinforcement which in turn restrains the lateral deformation of the soil.

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Q:

In design of reinforced earth wall, the Rankine’s earth pressure is valid.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: Not available for this question

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Q:

The reinforced earth structures can be transported easily.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: The most of the reinforced earth structures are quite flexible. Being flexible, they can be much easily transported. Since they can be transported easily, these can be constructed speedily.

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Q:

In general, the reinforced earth structures are ________

A) flexible B) stiff
C) rigid D) firm
 
Answer & Explanation Answer: A) flexible

Explanation: In general, the reinforced earth structures are quite flexible. Being flexible, they can withstand foundation deformations or the foundation settlements. They can also withstand earthquake force more efficiently.

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Q:

The wall facing element is also known as _______

A) plaster B) POP
C) skin D) coat
 
Answer & Explanation Answer: C) skin

Explanation: The wall facing element is provided at the free boundary of a reinforced earth structure. This is done to provide some form of barrier and these elements are known as skin. These elements can be flexible or stiff.

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81
Q:

The soil used in the backfill should have particles of not more than _____ passing 63 ?m sieve.

A) 10% B) 20%
C) 30% D) 40%
 
Answer & Explanation Answer: A) 10%

Explanation: The soil used in the backfill should predominantly be coarse-grained and it is proposed that not more than 10% of the particles should pass 63 ?m sieve. The first level of the reinforced strips is placed at the ground level.

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