GATE Civil Engineering (CE) 2019 Shift 1 Solved Paper

Question : 16 of 65

Marks: +1, -0

A retaining wall of height

{H}

with smooth vertical backface supports a backfill inclined at an angle

β

with the horizontal. The backfill consists of cohesionless soil having angle of internal friction

φ

. If the active lateral thrust acting on the wall is

{P}_{ {a}}

which one of the following statements is TRUE?

${Pa}$ acts at a height ${H}{/}3$ from the base of the wall and at an angle $β$ with the horizontal
${P}_{ {a}}$ acts at a height ${H} {/} 2$ from the base of the wall and at an angle $φ$ with the horizontal
$P_{a}$ acts at a height $H{/}2$ from the base of the wall and at an angle $β$ with the horizontal
${P}_{ {a}}$ acts at a height ${H} {/} 3$ from the base of the wall and at an angle $φ$ with the horizontal

Solution:

active thurst act at a height

{H} {/} 3

from the base of the wall and at an angle equal to backfill inclination.

Go to Question:

Prev Question

Next Question