MyQuestionIcon

14

You visited us 14 times! Enjoying our articles? Unlock Full Access!

Foundation Engineering

Active Pressure -V

A homogeneous...

Question

A homogeneous gravity retaining wall supporting a cohesive backfill is shown in the figure. The lateral active earth pressure at the bottom of the wall is 40 kPa

The maximum weight of the wall (expressed in KN per m length required to prevent it from overturning about its toe (Point P) is

A

120

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

180

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

240

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

360

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 120

Moment about toe

$F \times 2 = W \times 2$

F = W

$W = F = \frac{1}{2} \times 6 \times 40 = 120 K N$

Weight of wall = 120 kN

Suggest Corrections

thumbs-up

0

Similar questions

Q. A rigid smooth retaining wall of height 7 m with vertical back face retains saturated clay as backfill.

The saturated unit weight and undrained cohesion of the backfill are

17.2 k N / m^{3}

and 20 kPa, respectively. The difference in the active lateral forces on the wall (in KN per meter length of wall up to two decimal places), before and after the occurrence of tension cracks is

Q. Figure given below shows a smooth vertical gravity retaining wall with cohesionless soil backfill having an angle of internal friction

ϕ

. In the graphical representation of Rankine's active earth pressure for the retaining wall shown in figure, length OP represents

Q. Two different soil types (soil 1 and soil 2) are used as backfill behind a retaining wall as shown in the figure, where

γ_{t}

is total unit weight, and C'

ϕ^{'}

are effective cohesion and effective angle of shearing resistance. The resultant active earth force per unit length (in kN/m) acting on the wall is:

Q. The 3m high vertical earth retaining wall retains a dry grannular backfill with angle of internal friction of

30^{\circ}

and unit weight

20 K N / m^{3}

. If the wall is prevented from yielding (no movement) the total horizontal thrust (in KN per unit length) on the wall is

Q. A 6m height retaining wall having smooth vertical face and horizontal backfill. Top 3 m thick layer is sand

ϕ = 30^{\circ}

while the bottom layer is 3 m thick clay (C = 20 kPa). Assume unit weight for both sand and clay as

18 k N / m^{3}

. The total active earth pressure per unit length of the wall (in K=kN/m) is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Active Pressure -V

FOUNDATION ENGINEERING

Watch in App

explore_more_icon

Explore more

Active Pressure -V

Other Foundation Engineering

Join BYJU'S Learning Program

CrossIcon