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 MN/m². = €175 Sand 0' = 35° L= 4 m y= 17 kN/m³ = Ysat 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 MN/m². = €175 Sand 0' = 35° L= 4 m y= 17 kN/m³ = Ysat 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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Transcribed Image Text: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
MN/m².
=
€175
Sand
0' = 35°
L= 4 m
y= 17 kN/m³
=
Ysat 18 kN/m³
Undrained shear
strength, su = 35
kN/m²
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