Problem 2: The figure below shows a cantilever sheet-pile wall penetrating a clay. (a) Determine the actual depth of penetration, (b) maximum moment, and (c) section modulus of the sheet-pile section. Use σall = 160MN/m² L1 = 1.8m L₂ = 2.6m Yary = 17.58kN/m³ Ysat 18.69kN/m³ = 0 = 20° c' = 10kPa 4₁ Water table Dredge line F D Ly σ B D Sand Sand Yat $ c=0 Clay 6=0

Problem 2: The figure below shows a cantilever sheet-pile wall penetrating a clay. (a) Determine the actual depth of penetration, (b) maximum moment, and (c) section modulus of the sheet-pile section. Use σall = 160MN/m² L1 = 1.8m L₂ = 2.6m Yary = 17.58kN/m³ Ysat 18.69kN/m³ = 0 = 20° c' = 10kPa 4₁ Water table Dredge line F D Ly σ B D Sand Sand Yat $ c=0 Clay 6=0

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 14.1P

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Determine the depth of embedment required for stability of the cantilever sheet pile wall shown by using the factored strength method, taking F4 = 1.3. Coarse-grained soil Ysat = 20 kN/m O's = 39" 3 m 8 = O'cs
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Question 3 The flownet for an excavation supported by sheet pile walls is shown in Figure Q3. The soil being excavated is a uniform fine sand with a coefficient of permeability (k) of 5×104 m/s. The width of the trench is 5 m, with a length of 50 m. A constant external water level of 2 m is maintained at the ground level. Ground level 2m 6m 6m 6m ▼ K Line of symmetry- 5m Sheet pile wall 9m (c) Determine the pore water pressure (u) at Point A. Figure Q3 (a) Explain the physical significance of a flownet. In other words, explain what these lines represent. (b) Determine the total water flow rate (Q) at the excavation floor. K (d) If the excavation was carried out on the Moon, determine the total water flow rate (Q) at the excavation floor again (assuming that the gravitational acceleration on the Moon is 1.6 m/s²).
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