Geotechnical Engineering

DHARM 300 GEOTECHNICAL ENGINEERING Shear strength, s = σ tan φ = 34 tan 30° = 19.6 kN/m^2 (nearly). Example 8.4: The following d ...

DHARM SHEARING STRENGTH OF SOILS 301 The normal and shear stresses on the failure plane are plotted as shown: 300 200 100 0 100 ...

DHARM 302 GEOTECHNICAL ENGINEERING Plot the Mohr’s circles and hence determine the strength envelope and angle of internal frict ...

DHARM SHEARING STRENGTH OF SOILS 303 Hence σ 1 = 200 + 200 = 400 kN/m^2 for σ 3 = 200 kN/m^2. Example 8.8: The stresses acting o ...

DHARM 304 GEOTECHNICAL ENGINEERING Solving (1) and (2), σ 1 = 246.5 kN/m^2 (Major principal effective stress) σ 3 = 76.5 kN/m^2 ...

DHARM SHEARING STRENGTH OF SOILS 305 Shear stress, N/cm 2 8.6 s Normal stress, N/cm^2 t 4.3 N/cm^2 Mohr’s circle for unconfined ...

DHARM 306 GEOTECHNICAL ENGINEERING Example 8.11: In a triaxial shear test conducted on a soil sample having a cohesion of 12 kN/ ...

DHARM SHEARING STRENGTH OF SOILS 307 The minor and major principal stresses are plotted as OA and OB to a convenient scale on th ...

DHARM 308 GEOTECHNICAL ENGINEERING Graphical method: f= 30° s Normal stress, kN/m^2 t C Strength envelop e A 300 200 100 (^0) 10 ...

DHARM SHEARING STRENGTH OF SOILS 309 φ = 40°; θcr = 65° with the horizontal. (Fig. 8.57) Analytical method: σ 3 = 150 kN/m^2 (σ ...

DHARM 310 GEOTECHNICAL ENGINEERING ∴ Nφ = tan (45° + φ/2) = 2 or 45° + φ′/2 = 63°25′, φ′/2 = 18°25′ ∴ φ′ = 36°50′. The graphical ...

DHARM SHEARING STRENGTH OF SOILS 311 Example 8.17: Given the following data from a consolidated undrained test with pore water p ...

DHARM 312 GEOTECHNICAL ENGINEERING Total normal pressure at 18 m depth = 2.081 × 9.81 × 18 σ = 367.5 kN/m^2 Effective pressure a ...

DHARM SHEARING STRENGTH OF SOILS 313 According to the conditions of drainage, shearing strength tests may be classified as the ...

DHARM 314 GEOTECHNICAL ENGINEERING R. M. Koerner: Construction and Geotechnical Methods in Foundation Engineering, McGraw Hill ...

DHARM SHEARING STRENGTH OF SOILS 315 8.8 Explain the shear characteristics of sand and normally loaded clays. (S.V.U. (B.E.) (R. ...

DHARM 316 GEOTECHNICAL ENGINEERING Determine the magnitude of the major and minor principal stresses at failure when the vertica ...

DHARM SHEARING STRENGTH OF SOILS 317 of the box was 3600 mm^2 , and the normal load was 540 N what would have been the failure s ...

9. 1 Introduction Earth slopes may be found in nature or may be man-made. These are invariably required in the construction of h ...

DHARM STABILITY OF EARTH SLOPES 319 strata are present the strata boundaries are assumed to be parallel to the surface. Failure ...