Geotechnical Engineering

DHARM 800 GEOTECHNICAL ENGINEERING Taking the centre of rotation to be at a height of 0.2 D above the base, it can be shown that ...

DHARM CAISSONS AND WELL FOUNDATIONS 801 differs from the well foundation in the method of construction. Lazard gives empirical r ...

DHARM 802 GEOTECHNICAL ENGINEERING Lazard conducted lots of tests and compared the results with the values obtained from equatio ...

DHARM CAISSONS AND WELL FOUNDATIONS 803 Great care must be exercised to sink a well foundation vertically in order to avoid ecce ...

DHARM 804 GEOTECHNICAL ENGINEERING is feasible when the depth of water inside the well is not more than 1 m. An automatic grab o ...

DHARM CAISSONS AND WELL FOUNDATIONS 805 (a) Excavation on higher side (b) Using eccentric kentledge (c) Water or air jetting on ...

DHARM 806 GEOTECHNICAL ENGINEERING horizontal force of 1000 kN acting at a height of 8 m above the scour level. Determine the to ...

DHARM CAISSONS AND WELL FOUNDATIONS 807 Allowable Transverse load, Qa = q′max × L = 209 × 6 = 1254 kN (The shape factor may be t ...

DHARM 808 GEOTECHNICAL ENGINEERING = (1/2) × 10 × 20(1.9259 – 0.2596) (20 – 18) = 333 kN/m Qa = 333 × 7.5 = 2, 497.5 kN (b) Cent ...

DHARM CAISSONS AND WELL FOUNDATIONS 809 References Balwant Rao, B & Muthuswamy, C: “Considerations in the Design and Sinkin ...

DHARM 810 GEOTECHNICAL ENGINEERING Sankaran K.S. and Muthukrishnaiah. K: “Wells Subjected to Horizontal Forces—A model study”, ...

DHARM CAISSONS AND WELL FOUNDATIONS 811 19.15 Enumerate the various methods for the analysis of lateral stability of a well acte ...

20.1 INTRODUCTION Foundations may be subjected to either static loads or a combination of static and dynamic loads; the latter l ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 813 ‘Dynamics of Bases and Foundations’ forms an important part of ‘Indu ...

DHARM 814 GEOTECHNICAL ENGINEERING A graphical representation of the simple harmonic motion of the weight is shown in Fig. 20.2. ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 815 The general solution of this equation is z = C 1 sin ωt + C 2 cos ωt ...

DHARM 816 GEOTECHNICAL ENGINEERING However, if the spring-supported mass of Fig. 20.4 (a) can also rotate in one plane its degre ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 817 These are known as the Principal modes of vibration of the block and ...

DHARM 818 GEOTECHNICAL ENGINEERING 20.2.4 Resonance When the frequency of the exciting force in a forced vibration of a body or ...

DHARM ELEMENTS OF SOIL DYNAMICS AND MACHINE FOUNDATIONS 819 (v) ‘Radiation’, ‘dispersion’ or ‘geometric’ damping. In the case of ...