Problem 4: A building is to be constructed on a 6 m thick stratum of the clay for which consolidation data are given in Problem 3. (a) The average in-situ void ratio of this clay stratum is 0.91 and initial effective vertical stress on this clay stratum is 200 kPa. Given that the average stress in the clay after construction of the building is 300 kPa, estimate the decrease in the thickness of the clay stratum caused by full consolidation under the building load. (b) If the initial effective stress on this clay stratum were 50 kPa and the average stress in the clay after construction of the building is still 300 kPa, what would the decrease in the thickness of the clay stratum be? The initial void ratio is also assumed to be 0.91.

Problem 4: A building is to be constructed on a 6 m thick stratum of the clay for which consolidation data are given in Problem 3. (a) The average in-situ void ratio of this clay stratum is 0.91 and initial effective vertical stress on this clay stratum is 200 kPa. Given that the average stress in the clay after construction of the building is 300 kPa, estimate the decrease in the thickness of the clay stratum caused by full consolidation under the building load. (b) If the initial effective stress on this clay stratum were 50 kPa and the average stress in the clay after construction of the building is still 300 kPa, what would the decrease in the thickness of the clay stratum be? The initial void ratio is also assumed to be 0.91.

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: A 6 foot thick clay layer is determined to have the consolidation properties shown below. If the…

A: Consolidated settlement is the process by which the volume of soil is decreased by the removal of…

Q: a) The following results in Table 2 were obtained for peak failure in a series of…

A: A triaxial test is conducted in two stages in which the drainage valve may be opened or closed. A…

Q: A normally consolidated clay layer 3.38 m. thick has a void ratio of 1.07. Liquid limit is equal to…

Q: A layer of normally consolidated, saturated silty clay of 1 m thickness is subjected to one…

Q: From the application of given pressure, the anticipated primary consolidation settlement is 0.064…

Q: A normally consolidated clay layer 5.18 m. thick has a void ratio of 1.08. Liquid limit is equal to…

A: Given data in question Void ratio Depth Liquid limit Average stress Increase in stress To find out…

Q: Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are Cs =…

A: Given - Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are…

Q: A consolidated undrained test was conducted on a clay speci- men. The consolidation and chamber…

A: From first specimen-σ1=σ3+σd

Q: From the application of given pressure, the anticipated primary consolidati 0.064 mm. What is the…

A: Anticipated primary consolidation settlement = 0.064mm Average degree when settlement is 0.02mm

Q: A fully saturated clay specimen is placed in a consolidometer and subjected to a loading of 200…

Q: 1. For the one-dimensional consolidation test result shown in Figure below, determine my.

A: Solution: 1. Considering the graph:

Q: In a laboratory compression test, the void ratio in a soil sample changes from 1.46 to 1.32 when the…

A: Given data: Initial void ratio of the soil sample (e1) = 1.46 final void ratio of the soil sample…

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

Problem 4: A building is to be constructed on a 6 m thick stratum of the clay for which
consolidation data are given in Problem 3.
(a) The average in-situ void ratio of this clay stratum is 0.91 and initial effective vertical
stress on this clay stratum is 200 kPa. Given that the average stress in the clay after
construction of the building is 300 kPa, estimate the decrease in the thickness of the clay
stratum caused by full consolidation under the building load.
(b) If the initial effective stress on this clay stratum were 50 kPa and the average stress in the
clay after construction of the building is still 300 kPa, what would the decrease in the
thickness of the clay stratum be? The initial void ratio is also assumed to be 0.91.

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

VIEW

Step 2

VIEW

Step 3

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

Q: For the soil profile shown in figure. Determine the: a) Final consolidation settlement. b) Time (in month) required for 50% consolidation. c) Time (in month) required for the settlement to be (32) mm. d) Effective stress at the mid of the clay layer immediately after applying the load. e) Pore water pressure at the mid of the clay at the end of consolidation. f) Time (in month) required for full consolidation. g) value of maximum preconsolidation pressure (õp)at which the clay is considered as normally consolidated clay. Note: use yw= 10 kN/m³ Surcharge Aq.= 60 kPa El. 0 XXX Sand y= 15 kN/m³ El. -3 m Sand y= 17 kN/ m³ El. -6 m Clay Y. = 19.5 kN/m³ e = 0.81 C, = 1.5 m²/ yr O.C.R =1.6 C. = 0.15 C, = 0.02 El. -10 m Sand
Answer in three decimal places please
What is the equivalent constrained modulus in psf if the initial stress is 418 psf, the change in stress is 1204 psf, and the maximum past pressure is 418 psf? The initial void ratio is 1.29. The compression index is 0.26.
layer. 2. A project with excavation and construction stages will take place at your site. The profile contains a saturated clay On March 1, the effective stress at point A (in the middle of the clay layer) is 150 kPa, and the overconsolidation ratio is 1. On April 1, the effective stress at point A is 140 kPa. On May 1, the effective overconsolidation ratio on May 1? Show your work and circle your answer. stress at point A is 290 kPa. What is the
A 3 m thick stratum (drained in two directions) of saturated Clay and under overburden, exhibited 90% primary consolidation in 75 days. Find the coefficient of consolidation of the clay for the pressure range. a) Take a 30 mm thick specimen, how long will it take for it to show 80% consolidation in the laboratory for a similar length of pressure, consider a two-way drain? b) If the specimen is 25 mm, time to reach 60% consolidation, with drainage in one direction?
Answer in three decimal places please