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,
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![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. (pa
100 kPa)
Qu1) = n,n: [94,0(2) +Ea'pc,AL|
Q.e) = L,B,CN+E2(L, + B, )e,AL
u(p) 'c
If Qu(1) < Qu@), then Q, = Qu)7
Number of piles in group: n,×n2
D
7 =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, Peck
and Mesri, 1996)
LJB, = 1
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
0.8
0.54
3
4
5
1.0
0.48](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbd3631e7-49a1-4c98-af0e-19a086873158%2Ff72bc6e8-0571-434f-8847-c4cf3c8d53f1%2Fzgltj1u_processed.png&w=3840&q=75)
Transcribed Image Text: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. (pa
100 kPa)
Qu1) = n,n: [94,0(2) +Ea'pc,AL|
Q.e) = L,B,CN+E2(L, + B, )e,AL
u(p) 'c
If Qu(1) < Qu@), then Q, = Qu)7
Number of piles in group: n,×n2
D
7 =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, Peck
and Mesri, 1996)
LJB, = 1
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
0.8
0.54
3
4
5
1.0
0.48
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