A retaining wall currently stands 6.3 m high, supporting a level backfill of dry granular material with a unit weight of 16.2 kN/m³. The horizontal active thrust exerted on the wall is estimated to be 75 kN per meter length of the wall. To allow for an increase in the wall's height without exceeding the existing thrust, a portion of the backfill extending from the top down to a depth of 2.8 m is excavated and replaced with a lighter material (e.g., cinder) that has a unit weight of 8.2 kN/m³.

A smooth, vertical wall retains a 7 m-high granular backfill with the ground level being horizontal. The water table lies at a depth of 3 m from the top. The friction angle of the backfill is 32°. The bulk and saturated unit weights of the soils are 16.5 kN/m3 and 18.0 kN/m3, respectively. Assuming the soil is in the active state, determine the magnitude and location of the horizontal thrust on the wall.

A retaining wall of height 10 m retains dry sand. In initial state, the soil is loose and has a void ratio of 0.5, yd = 18 kN/m² and = 30°. Subsequently, the backfill is compacted to void ratio 0.3, Yd = 20 kN/m³ and = 35°. The ratio of initial passive thrust to final passive thrust (upto 2 decimal places) is

The backfill behind a retaining wall, located above the water table, consists of a sand of unit weight 19 kN/m³. The height of the wall is 8 m and the surface of the backfill is horizontal. Determine the total active thrust on the wall according to the Rankine theory if c'=0 and q'=38. If the wall is prevented from yielding, what is the approximate value of the thrust on the wall?

Raine

A retaining vertical wall 5 m high is retaining a sand of unit weight 17 kN/m3 for which o = 35°, the surface of sand is horizontal and the water table is below the bottom of wall. The saturated unit weight of sand is 20 kN/m3. The percentage change in the active thrust on wall if water table rises to ground level is

SITUATION 2: A retaining wall 6 m high supports cohesionless soil having a dry density of 1600 kg/m?,angle of resistance 32° and void ratio of 0.68. The surface of the soil is horizontal and level with the top of the wall. Neglecting wall friction and using Rankine's formula for active pressure of a cohesionless soil. 6. Determine the nearest value of the total earth thrust on the wall in KN per lineal meter if the soil is dry. а. 73.1 c. 62.4 b. 86.7 d. 98.1 7. Find the nearest value of the thrust on the wall in KN per lineal meter if owing to inadequate drainage, it is waterlogged to a level of 3.5 m below the surface. а. 112 c. 147 b. 171 d. 153 8. Find at what height above the base of the wall the thrust acts during the waterlogged condition. а. 2.21 m c. 1.74 m b. 2.00 m d. 1.42 m

A vertical wall of 6 m height with a smooth back has silt as backfill, has following properties: Cohesion, C = 5 kN/m² Angle of internal friction, o = 20° Unit weight, y = 18 kN/m³ The passive earth pressure acting on the wall from

A retaining wall with vertical back is 8 m. high. The density of top 3 m. of fill is 1.75 Mg/m³ and the angle of internal friction is 30°. For the lower 5 m. the values are 1.85 Mg/m³ and 35° respectively. There is a surcharge load on the horizontal surface of the fill equivalent to 1.2 Mg/m² uniformly distributed. Solve for the following questions below: 1. Find the magnitude of the thrust on the wall per linear meter if the fill is well drained. 2. Find the magnitude of the thrust on the wall per linear meter if the fill is waterlogged after a storm (Assume the saturated quantities of the two strata are 1.9 and 2.0 Mg/m³ respectively.) 3. Find the point of application of 5 points the thrust on the wall if the fill is waterlogged after a storm.

please, solve question 16.3   question in figure