A suitable depth of the asphalt pavement using the AASHTO method.

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= A steel pile (H-section; HP 310 x 125; and so A, 15.9 x 10-3 m² ) is driven into a layer of sandstone. The length of the pile is 25 m. Following are the properties of the sandstone: unconfined compression strength = qu(lab) = 78 MN/m² and angle of friction = 36°. Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use [qu(d Qu(lab). qu(design) b)/5]. (Enter your answer to three significant figures.) Qp(all) kN

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Chapter 19, Problem 8P

To determine

A suitable depth of the asphalt pavement using the AASHTO method.

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= A steel pile (H-section; HP 310 x 125; and so A, 15.9 x 10-3 m² ) is driven into a layer of sandstone. The length of the pile is 25 m. Following are the properties of the sandstone: unconfined compression strength = qu(lab) = 78 MN/m² and angle of friction = 36°. Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use [qu(d Qu(lab). qu(design) b)/5]. (Enter your answer to three significant figures.) Qp(all) kN

Си A concrete pile 20 m long having a cross section of 0.25 m x 0.25 m is fully embedded in a saturated clay layer. For the clay, given: Ysat = 18 kN/m³, = 0, and c₁ = 80 kN/m². Determine the allowable load that the pile can carry (FS-3). Use the A method to estimate the skin resistance. For L = 20 m, A = 0.173. (Enter your answer to three significant figures.) Qall kN

A concrete pile 65 ft long having a cross section of 15 in. × 15 in. is fully embedded in a saturated clay layer for which Ysat = can carry. (Let FS = 3.) Use the a method equation QsfpAL = ac₂pAL and the following table to estimate the skin friction and Vesic's method for point load estimation. Си α Pa ≤ 0.1 1.00 0.2 0.3 0.92 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: atmospheric pressure pa ≈ 100 kN/m² or 2000 lb/ft². (Enter your answer to three significant figures.) Qall = kip 121 lb/ft³, = 0, and Cu = 1600 lb/ft². Determine the allowable load that the pile