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According to the level of pressure applied, lateral earth pressure is classified into various types. Which of the following type of lateral earth pressure refers to the minimum pressure exerted by the soil on the retaining wall?

According to the level of pressure applied, lateral earth pressure is classified into various types. Which of the following type of lateral earth pressure refers to the minimum pressure exerted by the soil on the retaining wall? Correct Answer Active earth pressure

Explanation:

(i) Soil has a tendency to exert a lateral pressure against any object in contact.

(ii) Soil exerts a push against the retaining wall by virtue of its tendency to slip laterally and seek its natural slope or angle of repose. Thus making the wall to move slightly away from the backfilled soil mass. This kind of pressure is known as "active earth pressure".

(iii) In a condition when retaining wall is acting element and pushes soil, the pressure or resistance with which it pushes the soil is called "passive earth pressure".

(iv) Passive earth pressure is much greater than active earth pressure.

(v) There is an intermediate situation between active and passive earth pressure when the reataining structure is perfectly stationary and does not move in either direction. The pressure which develops in this situation is called "earth pressure at rest".

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