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Overview

Understanding the engineering behaviour of soils is fundamental to the design of offshore and nearshore infrastructure. This module introduces the principles of soil mechanics and their application to geotechnical site investigation and engineering design. Beginning with soil classification and index properties, the module explores how effective stress governs soil behaviour, before examining seepage, consolidation, strength, stiffness and deformation. Practical laboratory testing runs alongside the lecture programme, allowing students to undertake standard geotechnical tests and appreciate how engineering parameters are measured and interpreted. The module also introduces modern offshore site investigation techniques, with particular emphasis on Cone Penetration Testing (CPT) and the derivation of engineering properties from in situ measurements. Throughout the module, students develop an understanding of how laboratory data, field investigations and geophysical surveys are integrated to characterise the subsurface and support the development of ground models for engineering applications.

In list form, the syllabus can be summarised thus:

1.Index properties, soil classification and soil behaviour.

2.Pore pressure, total stress and effective stress

3.Permeability, seepage, and consolidation

4.Shear strength, stiffness and deformation

1. Laboratory and in situ testing, Cone Penetration Testing (CPT) interpretation and ground model development.

The practical element will typically include the measurement of:

Moisture content, soil colour, specific gravity, particle size distribution, density, organic matter content, carbonate content, Atterberg limits, , undrained shear strength

Assessment Strategy

Threshold - (Pass) - Partial understanding of basic theoretical principles of sediment geotechnics (within the scope of the curriculum, learning outcomes and skills outlined here). Basic ability to solve numerical problems associated geotechnical investigation. Basic ability to acquire, process, interpret and present geotechnical data

Good - (Merit) - Clear understanding of basic principles of sediment geotechnics (within the scope of the curriculum, learning outcomes and skills outlined here). Ability to solve numerical problems associated geotechnical investigation. Ability to acquire, process, interpret and present geotechnical data

Excellent - (Distinction) - Thorough understanding of basic principles of sediment geotechnics (within the scope of the curriculum, learning outcomes and skills outlined here). Highly developed ability to solve numerical problems associated geotechnical investigation. Highly developed ability to acquire, process, interpret and present geotechnical data

Learning Outcomes

• Upon successful completion of this module, the student should be able to show an appreciation of the role of pore fluid and pore fluid pressure on soil behaviour

• Upon successful completion of this module, the student should be aware of and be familiar with the various classification schemes available for describing soils or sediments

• Upon successful completion of this module, the student should be able to conduct a range of geotechnical laboratory tests within the framework of British Standards protocols so as to quantify and classify the soil on the basis of the results

• Upon successful completion of this module, the student should be able to manipulate geotechnical data in order to interpret laboratory data and solve numerical problems based on field applications.

• Upon successful completion of this module, the student should understand how geotechnical properties control the response of soil to load