---
title: "Remedial measures for slope failure"
subject: "Soil Mechanics"
chapter: 11
key: "semester_4/soil_mechanics:slope-remedial-measures"
source: https://www.bctengineer.com/q/semester_4/soil_mechanics/slope-remedial-measures
site: BCT Engineering
---

# Remedial measures for slope failure

Soil Mechanics · Chapter 11: Stability of Slopes

- Asked in: 2073 Magh, 1 marks
- Video: [GEOTECHNICS II ( BFC34402 ) : PROJECT GROUP 7 : Slope Remedial Technique ( Slope Stability )](https://www.youtube.com/watch?v=Xc5viNLEqgA) — FIQ ARODI
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_4/soil_mechanics/slope-remedial-measures
- Whole chapter: https://www.bctengineer.com/md/semester_4/soil_mechanics/chapter-11

## Question

Explain the remedial measures that can be used to prevent slope failure.

## Short answer

Measures include flattening the slope, unloading the crest, adding a berm at the toe, installing surface and subsurface drains, building retaining structures, reinforcing with nails/geotextiles, using vegetation, improving soil by compaction or grouting, and controlling erosion and vibrations.

## Answer

Remedial measures to prevent or stop slope failure:

1. **Flatten the slope or reduce its height;** provide berms or benches.
2. **Unload the top** by removing soil or load from the crest, and place a **berm or counterweight at the toe.**
3. **Drainage:** surface drains and catch-water drains, sub-surface and horizontal drains, and sand blankets to lower the water table and pore pressure.
4. **Retaining structures:** retaining walls, gabions, sheet piles or piles at the toe.
5. **Reinforcement:** geotextiles, geogrids, soil nailing, rock bolts and anchors.
6. **Vegetation and bio-engineering** to bind the soil and stop erosion.
7. **Soil improvement:** compaction, replacement of weak soil, grouting, or lime and cement stabilisation.
8. **Control of vibrations and erosion** at the toe, with proper protection such as riprap.

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. Which remedial measure changes geometry to reduce driving forces?
   A. Add surcharge on the crest
   B. Cut at the toe
   C. Flatten the slope, reduce height, or provide benches
   D. Increase water table
   Answer: C. Reducing slope or height lowers shear stress. (Key point: Geometry)

2. What is the role of drainage?
   A. Adds weight
   B. Lowers water table and pore pressure, increasing effective stress
   C. Increases seepage force
   D. Reduces friction
   Answer: B. Less pore pressure means greater shear strength. (Key point: Drainage)

3. Which is a reinforcement measure?
   A. Geotextiles, geogrids, soil nails, rock bolts
   B. Surface drains
   C. Berm
   D. Grass cover
   Answer: A. Reinforcement adds tensile or resisting capacity. (Key point: Reinforcement)

4. What does vegetation do?
   A. Increases pore pressure
   B. Increases slope angle
   C. Adds water
   D. Binds soil and reduces erosion
   Answer: D. Roots add cohesion and cover limits erosion. (Key point: Bio-engineering)

## Related in Soil Mechanics

- [Slope failure types and prevention](https://www.bctengineer.com/question.md?key=semester_4%2Fsoil_mechanics%3Aslope-failure-types-prevention) — Soil Mechanics, chapter 11, asked 2×
- [Causes of slope failure](https://www.bctengineer.com/question.md?key=semester_4%2Fsoil_mechanics%3Aslope-failure-causes) — Soil Mechanics, chapter 11, asked 4×
- [Types of slope failure](https://www.bctengineer.com/question.md?key=semester_4%2Fsoil_mechanics%3Aslope-failure-types) — Soil Mechanics, chapter 11, asked 2×
- [Infinite dry slope, c = 10 kPa, φ = 25°](https://www.bctengineer.com/question.md?key=semester_4%2Fsoil_mechanics%3Ainfinite-dry-slope-c10-phi25) — Soil Mechanics, chapter 11

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