A concrete pile 0.133ft by 0.133ft in cross section is shown below. Pile length 10 m . Answer a) ii, iii, iv Where a = empirical adhesion factor. The approximate variation of thevalue of a is shown in Table 9.10.Table 9.10 Variation of a(Interpolated Values Based onTerzaghi, Peck and Mesri, 1996)CuP.as0.11.000.20.920.30.820.40.740.60.620.80.541.00.481.21.40.420.401.60.381.82.00.360.352.40.342.80.34Note: p. = atmospheric pressure- 100 kN/m² or 2000 Ib/ft²fav = 0.02p,(Ng0)(9.45)where(No) = average value of standard penetration resistanceP. = atmospheric pressure (=100 kN/m² or 2000 Ib/ft?)For low-displacement driven pilesfav = 0.01p,(No)(9.46)Briaud et al. (1985) suggested thatfav - 0.224 p,(N)°29(9.47)The ultimate side resistance can thus be given asQ, = Efp AL = ac„p AL(9.59) Silty clayYu = 118 IbvnC- 700 Ib/t20 ftGroundwater Plasticity index, PI = 15table.Silty clayYu- 122.4 Ib/ftc,- 1500 Ib/ft?40 ftPlasticity index, PI = 2016 in.Depth (m)Nu1.563.04.556.07.5109.01010.51312.01513.51815.02017.018.5171820.021(a) Estimate the allowable load-carrying capacity of the pile (Qal).Assume a Factor of Safety.Use o = 20° for all clays, which are normally consolidated.i.Use equation 9.59 and Table 9.10ii.Now, use equation 9.45iii.Now, use equation 9.46iv.Now, use equation 9.47

Given : Equation 9.45, fav = 0.02 pa(N60) Equation 9.46, fav = 0.01 pa(N60) Equation 9.47, fav =…

Silty clay Y- i18 Iivn C,- 700 Ib/ft 20 ft Groundwater Plasticity index, PI = 15 table . Silty clay Yu- 122.4 Ib/t c,- 1500 Ib/ft? 40 ft Plasticity index, PI = 20 16 in. Depth (m) 1.5 3.0 6. 4.5 5 6.0 7.5 10 9.0 10 10.5 13 12.0 15 13.5 18 20 17 15.0 17.0 18.5 18 20.0 21 (a) Estimate the allowable load-carrying capacity of the pile (Qal). Assume a Factor of Safety. Use øk = 20° for all clays, which are normally consolidated. i. Use equation 9.59 and Table 9.10 ii. Now, use equation 9.45 Now, use equation 9.46 Now, use equation 9.47 iii. iv.

Silty clay Y- i18 Iivn C,- 700 Ib/ft 20 ft Groundwater Plasticity index, PI = 15 table . Silty clay Yu- 122.4 Ib/t c,- 1500 Ib/ft? 40 ft Plasticity index, PI = 20 16 in. Depth (m) 1.5 3.0 6. 4.5 5 6.0 7.5 10 9.0 10 10.5 13 12.0 15 13.5 18 20 17 15.0 17.0 18.5 18 20.0 21 (a) Estimate the allowable load-carrying capacity of the pile (Qal). Assume a Factor of Safety. Use øk = 20° for all clays, which are normally consolidated. i. Use equation 9.59 and Table 9.10 ii. Now, use equation 9.45 Now, use equation 9.46 Now, use equation 9.47 iii. iv.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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