Which of the following statements regarding the Pumping Out Test is INCORRECT?

Pumping Out Test

The Pumping Out Test is a method used to measure the permeability of soil by pumping out water from a well and observing the effects. It is often utilized in larger engineering projects where understanding the permeability of extensive soil deposits is crucial. The test influences soil over a large area, giving a comprehensive measure of soil permeability.

Analyzing the Given Options

1. "It is the most accurate test." (Correct)

   • The Pumping Out Test is generally considered accurate as it assesses the permeability of a large volume of soil.

2. "Pumping out tests are expensive." (Correct)

   • Due to the extensive setup and equipment required, the test is costly.

3. "It is used to measure permeability of soils for small engineering projects." (Incorrect)

   • The Pumping Out Test is not typically used for small projects due to its extensive nature and cost.

   • This statement is incorrect as the test is more suitable for larger projects.

4. "In a pumping out test, soil deposit over a large area is influenced and represents an overall coefficient of permeability of a large mass of soil." (Correct)

   • This statement correctly describes the test's ability to measure permeability over a large area.