The group pile below is to be built in normally consolidated clay. Calculate the consolidation settlement in cm. Cap Size: B = 4 m; L = 5 m Group Pile Dimensions: Bg = 3 m; Lg = 4 m gr 23 Y = 1.8 gr Clay Parameters: Ysat = 9 m 1 m 4 m cm3 = 3.75* 10-3 m²/ton cm³; m₂ = 150 ton Saturated Clay Sand

during derivation of Terzaghi's conventional 6-3 What is an overconsolidated clay and what causes the overconsolidation? Give theory of consolidation. What is an overconsolidated clay and what causes the overconsolidation? Give three possible causes. Why moy lowe

During geological investigation on a site, it was observed that subsoil contains 7.5 m depth of clay followed by some other incompetent layers. The consultant decided to design a friction pile group which should be economical and able to carry the anticipated load of 1.5 x 10° N excluding the weight of pile cap. Design and draw the plan of the most suitable friction pile group considering the following parameters: = 0.030 N/ mm - 2.25 Cohesion intercept of clayey layer Factor of safety against shear failure Weight of pile cap = 110000N Pile diameter 300 mm %3D

Estimate the total consolidation settlement (primary & secondary) after 2 years and 3 months after the completion of primary consolidation settlement of an over consolidated clay layer under the bridge pier as shown below. The pier's dimensions are (2 m x 3 m). Use Yw= 10 kN/m³ and note that the time for completion the primary consolidation is 3 years. | Qo= 960 kN G.W.L 1m Sand Ya=16.5 kN/m 2 m Ysat = 18 kN/m³ Silty Sand Ya=17.5 kN/m 3 m Ysat = 18.5 kN/m3 Clay Ya=20 kN/m , Ysat = 21 kN/m3 e, = 0.6 , Ae=0.04 , o= 78.3 kN/m2 4 m Cc= 0.4, Cs= 0.1, Ca= 0.02

Determine the design capacity of the concrete pile shown in Figure 3 for a factor of safety of 2. 2 Design = ? |VIAYIAY/YIAVAVIAVA Groundwater Table 6 m Dense Sand 20 m y = 20.45 kN/m O = 37* K = 0.90 0.5 m Điameter

7. A 12m long concrete pile with diameter = 0.45m is drilled into normally consolidated clay with S, = 90 kPa and friction angle = 32 degrees. The pile is loaded with 300 kN and in response to such loading, it settles 2.5mm. What is the mobilized short term end bearing resistance? Show your work and circle your answer.

1) A 0.5 meter diameter (D) concrete pile is driven into a sand deposit with y moist = 18.7 kN/cubic meter and o= 31 degrees. The water table is very deep. a. Assume Nq = 68.2. b. Assume K= 0.727 (Effective Earth Pressure Coefficient) c. Assume ô (friction of concrete surface to sand) = 24.8 (0.8 Tan 4) ESTIMATE PILE SHAFT ULTIMATE CAPACITY ASSUMING PILE IS 40 METERS LONG USING MEYERHOF'S METHOD. Assume critical depth is 15D. Hint: pile perimeter is 1.571 M