Geotechnical Engineering

DHARM 240 GEOTECHNICAL ENGINEERING Another way of expressing the time–rate of secondary compression is through the ‘coef- ficien ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 241 Example 7.2: A sand fill compacted to a bulk density of 18.84 kN/m^3 is to ...

DHARM 242 GEOTECHNICAL ENGINEERING The heights of sample and the void ratios at the end of each pressure increments are tabulate ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 243 From the diagram shown in Fig. 7.32. (a) Cc = ∆e/log(/)σσ 21 = ∆e, if one l ...

DHARM 244 GEOTECHNICAL ENGINEERING U = 25 10 0 . . = 25% Since the settlement is the same, U% is the same; hence, the time-facto ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 245 Clay A Clay B e 0 = 0.572 e 0 = 0.612 e 1 = 0.505 e 1 = 0.597 (^) σ 0 = 120 ...

DHARM 246 GEOTECHNICAL ENGINEERING = 5 1000 0 25 1202 ×× + . (.) log^10 (19/10) mm ≈^ 115.4 mm (iii) If drainage is one way, dra ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 247 For the clay stratum: w = 50% G = 2.65 Since it is saturated, e = w.G = 0.5 ...

DHARM 248 GEOTECHNICAL ENGINEERING Summary of Main Points Specifically, the compressibility of a soil depends on the structural ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 249 A. Casagrande and R.E. Fadum: “Notes on Soil Testing for Engineering Purpo ...

DHARM 250 GEOTECHNICAL ENGINEERING 7.3. Define ‘preconsolidation pressure’. In what ways in its determination important in soil ...

DHARM COMPRESSIBILITY AND CONSOLIDATION OF SOILS 251 7.16. Determine the amount of settlement given the following data: Thicknes ...

DHARM 252 GEOTECHNICAL ENGINEERING 7.28. A saturated clay layer 4 m thick is located 6 m below GL. The void ratio of the clay is ...

8.1 Introduction ‘Shearing Strength’ of a soil is perhaps the most important of its engineering properties. This is because all ...

DHARM 254 GEOTECHNICAL ENGINEERING 8.2.1 Friction between Solid Bodies When two solid bodies are in contact with each other, the ...

DHARM SHEARING STRENGTH OF SOILS 255 force. Angles α and φ are equal; slip or sliding to the right is incipient or imminent. If ...

DHARM 256 GEOTECHNICAL ENGINEERING shown that satisfactory solutions may be obtained for many problems in the field of geotechni ...

DHARM SHEARING STRENGTH OF SOILS 257 M s 3 ss 13 + 2 ss 13 – 2 sq s 1 C¢ C 1 GG –2q (^2) q^2 qm F E 180° D b bm Op q q45° J H ...

DHARM 258 GEOTECHNICAL ENGINEERING The maximum or principal shearing stress is equal to the radius of the Mohr’s circle, and it ...

DHARM SHEARING STRENGTH OF SOILS 259 σ 1 /σ 3 = 1 1 + − F HG I KJ sin sin β β m m ...(Eq. 8.12) σ for the plane of maximum obliq ...