UNIVERSITY OF KERALA - College of Engineering, Trivandrum

08.705.3 Elective-III DEEP FOUNDATIONS L T P/D Cr
3 1 0 4
Module I
Classification of piles based on mechanism of load transfer, method of installation , material. used – Concrete
piles - Ultimate skin friction and end bearing capacity of single pile in clay and sand by the I.S.code method –
Critical depth concept - Ultimate skin friction and end bearing capacity of single pile installed in granular soils
based on SPT and CPT values – Basis of dynamic formulae - The rational pile formula –Modified Hiley
formula – General comments on the reliability of dynamic formulae - Pile driving stresses - Conventional and
cyclic pile load tests –Piles for resisting uplift - Tension piles of uniform diameter in clays and sands - Tension
piles with enlarged base in clays.
Module II
Single pile versus pile groups – Pile group configurations - Group action – Efficiency of pile groups - Group
capacity – Minimum spacing of piles in a group – Negative skin friction of pile groups – Settlement of pile
groups in clays – Equivalent raft approach - Settlement of pile groups in sands - Skempton’s and Meyerhof’s
methods - Brief discussion on drilled piers.
Module III
Well foundations – Components of a well foundation– Procedure for construction and sinking of wells –
Thickness of well steining for sinking under self weight - Grip length - Problems encountered in well sinking –
Tilts and Shifts – Causes – Permissible tilts and shifts - Methods to rectify tilts and shifts – Forces acting on a
well foundation –Allowable bearing pressure – Lateral stability of well foundations - Terzaghi’s analysis.
References:
1. Gopal Ranjan & A.S.R Rao , Basic and Applied Soil Mechanics,New Age International (P) Limited,
New Delhi, 2002
2. K.R. Arora, Geotechnical Engineering, Standard Publishers Distributors, New Delhi, 2006
3.Venkatramaiah, Geotechnical Engineering, Universities Press (India) Limited, Hyderabad, 2000
Question Paper: Duration:3 hours
The question paper consists of Part A and Part B.
Part A carries 40 marks. There will be 8 compulsory short answer questions covering entire syllabus.
Part B is for 60 marks. There will be 2 questions from each module. The candidate has to answer one question
of 20 marks from each module.
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