A20 mm thick laboratory soil sample reaches 60% consolidation in 32.5 seconds under double drainage condition. How much time will be required for a 10 m thick layer in the field to reach the same degree of consolidation, if the clay layer is sandwiched between a sandy layer and an impermeable layer.

A20 mm thick laboratory soil sample reaches 60% consolidation in 32.5 seconds under double drainage condition. How much time will be required for a 10 m thick layer in the field to reach the same degree of consolidation, if the clay layer is sandwiched between a sandy layer and an impermeable layer.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Assume that the compressible soil shown in Figure 1 consists of a clay layer 10 ft thick. A…

A: Initial void ratio (eo) = 1.10Saturated Densityνsat = 115 lb/ft2Existing over burden pressure(po) =…

Q: Estimate the vertical coefficient of permeability for a uniform clay deposit where representative…

A: Given data: Liquid Limit = 92 Plastic Limit =34 Void ratio = 1.75 clay fraction = 0.4

Q: For a laboratory consolidation test on a clay specimen (drained on both sides) the following results…

Q: Table 2 shows the soil profile and the relevant soil parameters and the loading parameters.…

A: Introduction : Elastic settlement occurs as a result of a change in shape at a constant volume, such…

Q: In a consolidation test, the load was changed from 50 kN/m² to 100 kN/m². The change in void ratio…

Q: A programme of consolidated-undrained triaxial strength tests has been conducted on three soil…

A: We have to determine the valur of appropriate drained strength envelop for the soil according the…

Q: A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The…

A: Given Data:Thickness of layer=5mdouble drainageLoad=127.5 kN/m2Increased load=197.5 kN/m2Coefficient…

Q: A clay specimen with an initial height of 22 mm has been tested in an oedometer in the lab, allowing…

A: Clay specimen initial height= 22 mm Acceptable tolerance= 2%

Q: A stratum of normally consolidated clay is 25 feet thick and the water content is 3. measured as 50%…

Q: 2.17 A clay specimen 25 mm thick (drained at top only) was tested in the laboratory. For a given…

A: The objective of this problem is to determine the time required for consolidation of a clay layer…

Q: A bed of sand consists of three horizontal layers 10.0 of equal thickness. The value of Darcy's 'K'…

Q: Laboratory tests on a 25 mm thick clay sample drained at the top and bottom show that 50%…

Q: A falling-head permeability test on a specimen of fine sand 17.5 cm2 in area and 15.0 cm long gave a…

Q: The figure below shows the soil profile at a site where you plan to lower the water table. You have…

Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

A20 mm thick laboratory soil sample reaches
60% consolidation in 32.5 seconds under double
drainage condition. How much time will be
required for a 10 m thick layer in the field to reach
the same degree of consolidation, if the clay
layer is sandwiched between a sandy layer and an
impermeable layer.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1 Given_Data

VIEW

Step 2 Solution_1

VIEW

Step 3 Solution_2

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A proposed fill is to be placed on the soil profile shown in Figure 3.9. A consolidation test has been performed on a sample obtained from Point A, and this test indicates the preconsoli- dation pressure at that point is 200 kPa. Determine whether the silty clay stratum is normally consolidated or overconsolidated, and compute the o solidation ratio. The proposed fill has not yet been placed. overcon- Hint: Determine EFFECTIE STRRESS ATA water > leval 1.2m Silty Y = 19.1 kN/m 1.0m. Sand (SM): Y = 20.2 kN/m? 20 M Silty Clay (CL) Y=17.8 kN/m Figure 3.9 Soil profile for Example 3.3.
Two identically clay samples of the same size designated as A and B are subjected to consolidation under identical conditions. Drainage takes place through one face in sample A and through both the faces in sample B. 50% consolidation of sample A occurs in 10 minutes. The time required for 50 % consolidation to occur in sample B in minutes will be. (a) 40 (c) 5 (b) 10 (d) 2.5
Laboratory test on a 35 mm thick clay specimen drained just at the top show that 60% consolidation takes place 9.5 minutes. a) How long will it take for a similar clay layer in the field, 3,6 m thick, but drained at both the top and bottom, to undergo 60% consolidation? b) Find the time required for the clay layer in the field as described in part (a) above to reach 70% consolidation,
It’s a common observation that hydraulic conductivity of fine sands is greater than that of clean gravels (True or False) Standard Penetration Test (SPT) N-values can be correlated with soil’s unconfined compressive strength (True or False) If a soil sample has a 100% degree of saturation, the sample’s water content also becomes 100% (True or False) In the consolidation theory, the greater the coefficient of consolidation (cv), the faster the consolidation (True or False)
Calculate the compressibility coefficient of a 2 cm thick soil sample that reached 50% consolidation in 5 min in a consolidometer in which it was drained on both faces, whose permeability is 1x10^-5 cm/s and a ratio of voids of 1.
2 A soil profile is shown in Figure 11.19a. Laboratory consolidation tests were conducted on a specimen collected from the middle of the clay layer. The field consolidation curve interpolated from the laboratory test results is shown in Figure 11.19b. Calculate the settlement in the field caused by primary consolidation for a surcharge of 48 kN/m? applied at the ground surface. 1.12 48 KN/m L.10 Groundwater table 1.08 L06 o- 1.1 10m Y- 18 KN/m 104 102 1.00 40.95 70 100 Pressure a (log scale) (kN/m) E Clay Rock Void ratio, e