Q1. When designing cantilever sheet pile walls, a percentage of the computed theoretical penetration depth will be added to obtain the designed penetration depth. Answer the following questions: (a) What are the percentages of increase in penetration depth for sheet piles driven into sand and clay, respectively? (b) Correspondingly, provide a specific and detailed explanation of the reason for the difference between sand and clay. Q2. Where should the anchor plate or anchor beam be placed when designing an anchored sheet-pile wall? Provide detailed explanations and use graphics to illustrate if necessary. Q3. A 4-m tall sheet pile wall will be driven into clay, retaining sandy soil. The friction angle of the sand is 35° and its unit weight is 17 kN/m³. The saturated unit weight and undrained shear strength of clay are 18 kN/m³ and 35 kN/m², respectively. Determine the following: (a) The theoretical minimum penetration depth of the sheet pile wall to maintain stability (b) The maximum bending moment (per meter) and the minimum section modulus in the sheet pile wall, given the allowable stress of steel σall : 175 MN/m². L= 4m Sand '= 35° y= 17 kN/m³ sat = 18 kN/m³ Undrained shear strength, Su-35 kN/m²

Q1. When designing cantilever sheet pile walls, a percentage of the computed theoretical penetration depth will be added to obtain the designed penetration depth. Answer the following questions: (a) What are the percentages of increase in penetration depth for sheet piles driven into sand and clay, respectively? (b) Correspondingly, provide a specific and detailed explanation of the reason for the difference between sand and clay. Q2. Where should the anchor plate or anchor beam be placed when designing an anchored sheet-pile wall? Provide detailed explanations and use graphics to illustrate if necessary. Q3. A 4-m tall sheet pile wall will be driven into clay, retaining sandy soil. The friction angle of the sand is 35° and its unit weight is 17 kN/m³. The saturated unit weight and undrained shear strength of clay are 18 kN/m³ and 35 kN/m², respectively. Determine the following: (a) The theoretical minimum penetration depth of the sheet pile wall to maintain stability (b) The maximum bending moment (per meter) and the minimum section modulus in the sheet pile wall, given the allowable stress of steel σall : 175 MN/m². L= 4m Sand '= 35° y= 17 kN/m³ sat = 18 kN/m³ Undrained shear strength, Su-35 kN/m²

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter14: Sheet-pile Walls

Section: Chapter Questions

Problem 14.2P: Redo Problem 14.1 with the following: L1 = 3m, L2 = 6 m, γ = 17.3 kN/m3, γsat = 19.4 kN/m3, and ϕ′ =...

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