The correct answer is: A. A pile is a slender member which transfers the load through its lower end on a strong strata.
A pile is a slender member which transfers the load through its lower end on a strong strata. The load is transferred through the pile by compression. The pile is usually made of concrete or steel, and it is driven into the ground by a pile driver. Piles are used to support heavy structures, such as buildings and bridges.
Option B is incorrect because the pile does not transfer its load to the surrounding soil. The load is transferred through the pile by compression.
Option C is incorrect because the pile does not transfer its load by friction. The load is transferred through the pile by compression.
Option D is incorrect because a pile is not a cylindrical body of concrete. A pile is a slender member which transfers the load through its lower end on a strong strata.