The plan of a group pile is shown in the Figure below. Assume that the piles areembedded in a saturated homogeneous clay having a c, = 86 kN/m?. Given:diameter of piles (D) = 316 mm, center-to-center spacing of piles d = 790 mm, andlength of piles = 20 m. Find the allowable load-carrying capacity of the pile group.Use FS = 3. (pa100 kPa)Qu1) = n,n: [94,0(2) +Ea'pc,AL|Q.e) = L,B,CN+E2(L, + B, )e,ALu(p) 'cIf Qu(1) < Qu@), then Q, = Qu)7Number of piles in group: n,×n2D7 =1–7, (n, – 1) + n, (n, – 1)+ vZ (n – 1)(n, – 1)|adn,n,Table 11.10 Variation of a (interpo-lated values based on Terzaghi, Peckand Mesri, 1996)LJB, = 18Cu7Pa< 0.10.21.0060.920.30.820.40.740.60.624T0.80.543451.00.48

Procedure to find the allowable load-bearing capacity of pile group: Calculate the ratio of CuPa.…

The plan of a group pile is shown in the Figure below. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 86 kN/m?. Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles d = 790 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use FS = 3. (p, = 100 kPa) %3D Qu1) = n,n;|94,6|(p) + Ea'pe,AL| p°u(p) Que) = L,B,Cup,N; +D?(L, +B,)c¸AL If Ou) < Qu2), then Q, = Quay7 Number of piles in group: n¡Xn2 D 7 =1– , (n, – 1) + n, (n, – 1)+ /2 (n, – 1)(n, – 1)]| ndn,n, - Table 11.10 Variation of a (interpo- LJB, = 1 lated values based on Terzaghi, Peck and Mesri, 1996) 8 Cu 7 Pa < 0.1 0.2 1.00 6. 0.92 0.3 0.82 0.4 0.74 0.6 0.62 4 T T 0.8 0.54 2 3 4 1.0 0.48 LIB,

The plan of a group pile is shown in the Figure below. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 86 kN/m?. Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles d = 790 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use FS = 3. (p, = 100 kPa) %3D Qu1) = n,n;|94,6|(p) + Ea'pe,AL| p°u(p) Que) = L,B,Cup,N; +D?(L, +B,)c¸AL If Ou) < Qu2), then Q, = Quay7 Number of piles in group: n¡Xn2 D 7 =1– , (n, – 1) + n, (n, – 1)+ /2 (n, – 1)(n, – 1)]| ndn,n, - Table 11.10 Variation of a (interpo- LJB, = 1 lated values based on Terzaghi, Peck and Mesri, 1996) 8 Cu 7 Pa < 0.1 0.2 1.00 6. 0.92 0.3 0.82 0.4 0.74 0.6 0.62 4 T T 0.8 0.54 2 3 4 1.0 0.48 LIB,

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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