Question

A 10 ft wall retains soil with a horizontal surface that has 115 pcf unit weight, a friction angle of 26 degrees, and an effective cohesion c’= 50 psf. The water table is at 5ft depth. Assuming Rankine active lateral earth pressures and hydrostatic conditions, what is the total horizontal thrust that the wall feels

Answer #1

when you have a thin flexible retaining wall with height 10 ft,
unit weight of soil 110 pcf, international friction angle 25
degree, zero cohesion what will be resultant lateral force per unit
length acting on the wall in lbs?

A vertical unsupported cut of 15 ft. Assume unit
weight of soil is 115 pcf with c = 450 psf and f =
6°. Determine:
The lateral stress at the top and bottom of the cut.
The maximum depth of the potential tension crack.
The maximum unsupported excavation depth.

a five meter retaining wall has to retain backfill of sandy soil
having a unit weight 18.2 kn/m3 and angle of internal friction 32
degree,the surface of the backfill in inclined at an angle of 10
degree to the horizontal determine:the magnitude and point of
application of the active thrust on the wall,draw a diagram of
given situation ,and determine total active earth pressure acting
with vertical or with horizontal.

A 6-m-high retaining wall is to support a soil with unit
weight
17.4 kN/m3, soil
Friction angle 26°, and cohesion c14.36 kN/m2. Determine the
Rankine active force per unit length of the wall both before and
after the tensile crack occurs, and determine the line of action of
the resultant in both cases

A soil deposit has a unit weight of 120 pcf above the
groundwater and 128pcf below the groundwater. It has an undrained
shear strength (Su) of 500psf, effective cohession (c') of 200psf,
and effective friction angle (φ') of 31 degrees and extends to a
great depth. the groundwater table is at 15 ft below ground
surface
A) What is the short term (undrained) shear strength of the soil
at a depth of 30ft below ground surface?

A soil deposit has a unit weight of 120 pcf above the
groundwater and 128pcf below the groundwater. It has an undrained
shear strength (Su) of 500psf, effective cohession (c') of 200psf,
and effective friction angle (φ') of 31 degrees and extends to a
great depth. the groundwater table is at 15 ft below ground
surface
A) What is the short term (undrained) shear strength of the soil
at a depth of 30ft below ground surface?

) A reinforced earth retaining wall is to be 30 ft high (H=30
ft). - Backfill: unit weight 110 pcf, internal friction angle 33° -
Metal strip reinforcement: vertical spacing 3 ft, horizontal
spacing 4 ft, width of reinforcement 5”, yield stress of
reinforcement 35,000 psi, friction angle between the soil and
reinforcement is 24°, FS pullout failure = 2, FS tensile failure =2
- Assume ??′ = 2 3??′ - Corrosion rate: 0.0006 in/year for the 1st
2 year...

A retaining wall 30 m high was designed to stabilize a
horizontal ground surface.
The back of the wall is inclined 15 degrees to the vertical
direction and can be assumed rough with interface friction angle of
30 degrees.
(a) Draw a diagram to show the given wall dimensions, relevant
inclinations, and the direction of the active force on the
wall.
(b) Calculate the lateral force on the wall assuming the
groundwater table is at the base of the wall....

Determine the total force per unit length acting on a 4.8 m high
retaining wall. The soil that is backfilled level behind the wall
is a granular soil with a total unit weight of 18.2
kN/m3 and a saturated unit weight of 19.6
kN/m3. Use an at-rest earth pressure coefficient for the
soil which has an internal angle of friction of 26 degrees. The
water table is expected to rest at a depth of 1.5 below the ground
surface. Report...

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