27 with the following: center-to-center spacing of piles 5 30 in

Redo Problem 9.27 with the following: center-to-center spacing of piles 5 30 in., length of piles = 45 ft, D = 12 in., c u = 860 lb/ft 2 , and FS = 3. Use Table 9.10. Transcribed Image Text: Table 9.10 Variation of a
(Interpolated Values Based on
Terzaghi, Peck and Mesri, 1996)
Cu
Pa
< 0.1 1.00 0.2 0.92 0.3 0.82 0.4 0.74 0.6 0.62 0.8 0.54 1.0 0.48 1.2 0.42 1.4 0.40 1.6 0.38 1.8 0.36 2.0 0.35 2.4 0.34 2.8 0.34 Note: Pa = atmospheric pressure = 100 kN/m? or 2000 lb/ft? Transcribed Image Text: Figure P9.27 7 The plan of a group pile is shown in Figure P9.27. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 90 kN/m². Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles = 600 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use Table 9.10 and FS = 3.

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