The Rankine active force σ ′ a ( z = H ) per unit length of the wall, the variation of active earth pressure P a with depth, and the location z ¯ of the resultant measured from the bottom of the wall.

Question

A retaining wall supports a horizontal backfill that is composed of two types of soil. The first layer is 4.79 meters high. It has a unit weight of 16.61 kN/m3. The second layer is 6.58 meters and has a unit weight of 18.72 kN/m3. If the angle of friction for both layers is 34°, determine the total active force (kN) acting on the retaining wall per unit width. Final answer should be in two decimal places.

Answer 1

Question

Chapter 13, Problem 13.12P

To determine

The Rankine active force σ′a(z=H) per unit length of the wall, the variation of active earth pressure Pa with depth, and the location z¯ of the resultant measured from the bottom of the wall.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

A retaining wall supports a horizontal backfill that is composed of two types of soil. The first layer is 4.79 meters high. It has a unit weight of 16.61 kN/m3. The second layer is 6.58 meters and has a unit weight of 18.72 kN/m3. If the angle of friction for both layers is 34°, determine the total active force (kN) acting on the retaining wall per unit width. Final answer should be in two decimal places.

Question (2): If the wall is 3.5 m, determine an show the resultant force that water exert on the overhang sea wall along ABC, as shown in Figure (1). 1.5 m Figure (1) 2 m 2.5 m

13.22 Consider the retaining wall shown in Figure 13.38. The height of the wall is 9.75m. and the unit weight of the sand backfill is 18.7kN/m3. Using Coulomb's equation, calculate the active force, Pa, on the wall for the following values of the angle of wall friction. Also, comment on the direction and location of the resultant.