Answered: Figure shows a 4-m-high retaining wall,…

Figure shows a 4-m-high retaining wall, the wall is not restrained from yielding. Estimate depth tension crack Ze y= 15 kN/m d= 26° c'= 8 kN/m2 %3D 4 m

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.11P

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Concept explainers

Crack Detection

Concrete materials are meant for supporting structures, building foundations and they act as several load-bearing structures. Over time, due to environmental conditions, and based on the constituent materials used, concrete materials are subjected to a great degree of distress. Corrosion of the reinforcement bars due to chemical influences, uneven base, earthquake, drying shrinkages, and alkali-aggregate reactions are some of the reasons for concrete distress.

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Estimate depth tension crack Z_c

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A 6 m high retaining wall is to support a soil with a unit weight of 17.4 kN/m3, soil friction angle of 26° and cohesion of 14.36 kN/m2. Determine the Rankine active force per unit length of the wall before the tensile crack. Determine the Rankine active force per unit length of the wall after the tensile crack occurs. Determine the location of the active force after the tensile crack occurs.
A 6m retaining wall is supporting a soil with the following properties:Unit weight = 16 KN/cu.mAngle of internal friction = 25ºCohesion = 14 Kpaa. Assuming no tensile cracks occurs in the soil; determine its normal pressure acting at the back of the wall.b. If tensile crack occurs in the soil, calculate its active pressure acting on the wall.c. Find the location of tensile crack measured from the surface of horizontal backfill.
3. Compute the resultant lateral force for the soil-wall system shown in Figure 3. You may ignore tensile cracks. Use • A- Coloumb • B - Rankine 0=30°, y=20kN/m³ 4m Ground water table 7m c=50KN/m², p=10°, y=18KN/m³ 0=25°, y=20KN/m³ 8 m Gravity wall Figure 3
c) A retaining wall is shown in the figure below. Assume the backfill is in the active state and determine the depth of the tensile cracks. Ze = 5 m — y = 18 kN/m³ c' = 5 kN/m² p' = 30°
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A 5-m-high retaining wall with a vertical back face retains a homogeneous satu- rated soft clay. The saturated unit weight of the clay is 21 kN/mn³. Laboratory tests showed that the undrained shear strength, C, of the clay is 17 kN/m². a. Make the necessary calculation and draw the variation of Rankine's active pressure on the wall with depth. b. Find the depth up to which tensile crack can occur. c. Determine the total active force per unit length of the wall before the tensile crack occurs. d. Determine the total active force per unit length of the wall after the tensile crack occurs. Also, find the location of the resultant.
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3. A 15 ft high retaining wall with vertical back face retains a homogeneous saturated soft clay. The saturated unit weight of the clay is 122 Ib/ft³. Laboratory tests showed that the undrained shear strength, cu, of the clay is equal 350 lb/ft?. 0=0. a. Find the depth up to which the tensile crack can occur. b. Determine the total active force per unit length of the wall before the tensile crack occurs. C. Determine the total active force per unit length of the wall after the tensile crack occurs.