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Slope Stability

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Slope Stability

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Services Grey Background MLK Group Arrows Down

Slope Stability

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Our slope stability assessment reports are often required prior to development, in areas where there is a history of, or potential for slope instability.

A slope stability assessment is based on the stability condition of soils and rock on both natural and man-made slopes such as embankments, excavations, landfills and road cuts, and their ability to withstand or undergo movement from gravitational forces, seepage, or any dynamic load such as earthquakes.

We carry out a slope stability assessment to prevent the initiation of any such movement and eliminate the deformation on a slope, rather than simply minimise it.

Why do I need a slope stability assessment?

In areas where slope stability could be in doubt, it is likely that you will need a slope stability assessment report prior to development. You may require this report to achieve planning permission, for temporary works, or for remedial design.

The stability of any slope is critically important in geotechnical engineering applications because slope movement can result in catastrophic failure, causing substantial damage to both structures and infrastructure. Our slope stability assessment will assess the safe design of any slope on your site.

Why use us?

  • Established over 20 years
  • One-stop multidisciplinary
  • In-house land drilling with rigs
  • Collection of technical experts
  • Ex-local authority regulators in our team

A slope stability assessment can consist of one or more of the following:

Site walkover

We always recommend a site walkover as part of our phase 1 preliminary risk assessment and for planning the phase 2 geotechnical site investigation. During this essential activity, we are able to map all the features of the slope, which will then be incorporated into our slope stability analysis. You can be confident that our modelling is based on the characteristics of the real slope.

Intrusive investigation

Our intrusive investigation obtains information on the physical build-up of the slope and allows an assessment of its geotechnical properties to inform a slope stability assessment. This typically involves us drilling boreholes or digging trial pits to take soil samples and to install groundwater monitoring wells. The properties obtained from the in-situ investigation and laboratory analysis are then used in the slope assessment using specialist software utilising Eurocode partial factors.

Slope stabilty risk assessment

A slope stability risk assessment includes the probability of any dangerous events that might occur and  the possible area of the slope involved and what the severity of the damage could be.

The analysis of this risk will take into account the topography of the slope, the geotechnical characteristics of the soils or rock (e.g. strength, angle of shearing resistance, unit weight), the saturation degree of the soils and vegetation present on the slope.  Our assessment can include short and long terms stability analysis using information from the preliminary assessment findings, site walkover, geological maps, historical data, borehole data and laboratory testing results.

Site walkover
Intrusive investigation
Slope stability risk assessment

Get in touch today

We have offices throughout the UK.

What our clients say

“It can be difficult to find a value-driven consultancy capable of offering meaningful and pragmatic advice at short notice. The LK Group does this. They tailor their services to a wide range of site-specific challenges on my sites and then get on with it. Their approach is always straightforward.”

Steve Lancaster
Director, Lancaster Maloney Limited




Geotechnical site investigations, slope stability, earthwork designs, plate load tests, basement impact assessments, in-situ geotechnical testing, coal mining risk assessment.

Contaminated Land

Site investigation, risk assessment, de-risking sites, validation, coal mining assessment, basement impact assessment–contamination, remediation design and validation.

SuDS and Flood Risk

Flood risk assessment, SuDS assessment and design, soakaway testing, river modelling, fluvial geomorphology, geographical information systems.

Land Drilling

All-terrain & handheld window sampling, rotary drilling, dynamic probing, concrete coring, cable percussive, gas & water installations, foundation pits, soakaways, falling head tests, CBR tests.

Land Remediation

Specialist remdiation contracting, site clearance, ground improvements, bulk earthworks, soil stabilisation, pilling matt installation, remediation strategy, site enabling works.

Japanese Knotweed

On-site spraying treatment, burial cells, screening, high-performance geo-membranes installation, off site removal, steering member of The Invasive Non-Native Specialists Association.

Project Management

Client side project management and principal designer services to property developers, local authorities and property investors.

Air Tightness Testing

Air tightness testing and reporting, energy and sustainability reports.