An oil storage tank 35min diameter is located 2m below the surface of a deposit of clay 32mthick, which overliesa firm stratum, as shown in the scheme below. The net foundation pressures at the foundation level equal105 kN/m2. The average values of mv and pore pressure coefficient A for the clay are 0.14 m2/MN and 0.65,respectively. The undrained value of Young’s modulus is estimated to be 40 MN/m2. Determine the total settlement(excluding settlement due to secondary compression or creep) under the centre of the tank. -35mOil tankV W.T.Net q= 105 kN/m25 m2.5m /7.5 mII12.5m III32 m clay17.5 m IV22.5m V27.5m VIFirm stratum

Total settlement: In general, according to the classification of consolidation, the total settlement…

Answered: -35m Oil tank V W.T. Net q= 105 kN/m2 5…

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Civil Engineering

-35m Oil tank V W.T. Net q= 105 kN/m2 5 m 2.5m / 7.5 m II 12.5m III 32 m clay 17.5 m IV 22.5m V 27.5m VI Firm stratum

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter15: Slope Stability

Section: Chapter Questions

Problem 15.3P

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Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

An oil storage tank 35min diameter is located 2m below the surface of a deposit of clay 32mthick, which overlies
a firm stratum, as shown in the scheme below. The net foundation pressures at the foundation level equal
105 kN/m². The average values of mv and pore pressure coefficient A for the clay are 0.14 m²/MN and 0.65,
respectively. The undrained value of Young’s modulus is estimated to be 40 MN/m². Determine the total settlement
(excluding settlement due to secondary compression or creep) under the centre of the tank.

-35m
Oil tank
V W.T.
Net q= 105 kN/m2
5 m
2.5m /
7.5 m
II
12.5m III
32 m clay
17.5 m IV
22.5m V
27.5m VI
Firm stratum

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