{"id":20587,"date":"2025-07-24T11:44:46","date_gmt":"2025-07-24T06:14:46","guid":{"rendered":"https:\/\/eng.pdn.ac.lk\/civileng\/?page_id=20587"},"modified":"2025-10-22T14:13:52","modified_gmt":"2025-10-22T08:43:52","slug":"ce204-2","status":"publish","type":"page","link":"https:\/\/eng.pdn.ac.lk\/civileng\/ce204-2\/","title":{"rendered":"CE204"},"content":{"rendered":"\t\t
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Geomechanics - CE204 <\/h2><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Credits : 3<\/p>

Prerequisites :\u00a0\u00a0CE204<\/span><\/p>

Compulsory\/Optional : Compulsory<\/p>
Aim(s)<\/th><\/tr><\/thead>
\u00a0To impart knowledge and an understanding of soil mechanics and basic geology, and to familiarize with geotechnical and geological terminology and concepts commonly encountered in engineering practice.<\/span><\/td><\/tr><\/tbody>
Intended Learning Outcomes<\/th><\/tr><\/thead>

On successful completion of the course, the students should be able to;<\/span><\/p>

  1. Measure basic engineering and physical properties of soils and classify soils for engineering purposes improving the soil properties by compaction where required.<\/li>
  2. Determine total and effective stress distribution of soils and estimate seepage forces and the seepage through soils using permeability and Darcy’s law.<\/li>
  3. Determine consolidation and shear strength parameters of soils and compute time dependent settlement using one dimensional Terzaghi theory.<\/li>
  4. Describe internal (plate tectonics theory) and external geological processes (weathering, erosion) and the geology of Sri Lanka.<\/li>
  5. Identify the rock forming minerals, rock types and classify rocks for engineering purposes.<\/li><\/ol><\/td><\/tr><\/tbody>
Course content\/Course description<\/th><\/tr><\/thead>
  1. Basic characteristics of soils :<\/a>\u00a0Soil formation, structure and phase relationship, mineralogy, soil classification and description, problematic soils<\/li>
  2. Elements of stress analysis :<\/a>\u00a0Effective stress concept, stresses in ground, unsaturated zone, stress-strain relationships, stress state at a point in soil mass, stress induced by applied loads on soils<\/li>
  3. Permeability and seepage :<\/a>\u00a0Darcy\u2019s law, coefficient of permeability, layered soil, anisotropy, seepage theory, flow nets, uplift pressures and seepage forces<\/li>
  4. Compressibility :<\/a>\u00a0Compaction, 1D compression characteristics, oedometer tests, consolidation settlement, Terzaghi 1D consolidation theory, determination of coefficient of consolidation<\/li>
  5. Shear strength :<\/a>\u00a0Mohr-Coulomb failure criterion, shear strength of sand and clays residual strength, pore pressure coefficients, determination of shear strength parameters: triaxial tests (UU, CU, CD), direct shear test, vane shear test<\/li>
  6. Basic geology :<\/a>\u00a0Theory of plate tectonics, rock forming minerals and rock types, geological structures, geological processes, geology of Sri Lanka<\/li><\/ol><\/td><\/tr><\/tbody>
Recommended Texts<\/th><\/tr><\/thead>
  1. Craig, RF 2004, Soil Mechanics, Chapman & Hall, 7th edn, New York.<\/li>
  2. Das, BM 2011, Principles of Foundation Engineering, 7th edn, PWS Publishers.<\/li>
  3. Lamb, TW & Whitman, RV 2008, Soil Mechanics, SI Version, Wiley India Pvt. Limited.<\/li>
  4. Cooray, PG 1967 & 1984, An Introduction to the Geology of Sri Lanka, National Museums of Sri Lanka.<\/li>
  5. Blyth FGH & De Freitas MH, 1984. Geology for Engineers, 7th edn, ELBS Publication.<\/li><\/ol><\/td><\/tr><\/tbody><\/table>
    Time Allocation<\/th>Hours<\/th><\/tr><\/thead>
    Lectures<\/td>41<\/td><\/tr>
    Tutorials<\/td>4<\/td><\/tr>
    Practical<\/td>–<\/td><\/tr>
    Assignments<\/td>–<\/td><\/tr><\/tbody><\/table><\/div>
    \u00a0<\/div>
    Assessment<\/th>Percentage Marks<\/th><\/tr><\/thead>
    In-course<\/td><\/tr>
    Assignments\/Course work\/Quizzes<\/span><\/td>20<\/td><\/tr>
    Mid Semester Examination<\/td>20<\/td><\/tr>
    End-semester<\/strong><\/td>60<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

    Geomechanics – CE204 Credits : 3 Prerequisites :\u00a0\u00a0CE204 Compulsory\/Optional : Compulsory Aim(s) \u00a0To impart knowledge and an understanding of soil mechanics and basic geology, and to familiarize with geotechnical and geological terminology and concepts commonly encountered in engineering practice. Intended … <\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-20587","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/pages\/20587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/comments?post=20587"}],"version-history":[{"count":0,"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/pages\/20587\/revisions"}],"wp:attachment":[{"href":"https:\/\/eng.pdn.ac.lk\/civileng\/wp-json\/wp\/v2\/media?parent=20587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}