Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick wastested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the timewith dial gauge readings are:Time (min)0Settlement (mm) 00.25 10.220.42Vertical pressure (kPa) 15Settlement (mm)0.1Void ratio1.8840.6300.111.8790.71160.79And the void ratio and settlement for each load increment is shown in the tablebelow.600.211.851201.131.721001.0436640.910.862402.171.574803.151.431- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848.2- Find Preconsolidation pressure (oc) and compression index (Cc).Scanned by TapScanner

Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was tested in an oedometer…

Answered: 1- Find Coefficient of consolidation in…

1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848. 2- Find Preconsolidation pressure (oc) and compression index (Cc).

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: Please solve the following problem with step by step soilutions with the correct answer.

Q: A square footing, 2m x 2m in size, supports a column load of 300 kN. The soil…

A: Given; column load = 300 kN foundation settlement was 19 mm during the first 12 months. square…

Q: a. Find the cohesion of the sandy clay b. Find the angle of shearing resistance

A: Tri axial compression test:

Q: 3- Refer below. A square footing 2X2 m in size, supports a column load of 300 kN, The soil…

Q: The image below depicts the sand layer on top of the clay layer, with groundwater 2 meters below the…

A: Given, Depth of groundwater table = 2 m To find : Total, effective and horizontal stress at point…

Q: For the first series of tests, no drainage of pore water occurs, either when the normal load is…

A: Triaxial shear strength test on soil is used to measure the mechanical properties of the soil. In…

Q: 1) A 30-ft x 30-ft square mat foundation will be constructed at ground surface. The subsoil profile…

A: Cc = 0.29 ∆σ = 360 psf e = 1

Q: A square footing supporting a new building applies a uniform pressure of 200 kPa on the ground…

A: Explanation of stress isobar:A stress isobar, also known as a pressure bulb, refers to a specific…

Q: Q3. A mat foundation is shown in figure below. The design considerations are L 12 m, B -10 m, Df =…

Q: Problem 4: A building is to be constructed on a 6 m thick stratum of the clay for which…

Q: A large building is to be built on a thick layer of normally consolidated clay shown in the figure…

A: For the given soil profile, OCR is known as over-consolidation ratio. It is the ratio of…

Q: The consolidation rate data presented in Table 2 (next page) correspond to the 20 to 40 kPa load…

A: Given data: The initial height of the sample, Ho= 25.4 mm Drainage is provided in the both sides of…

Q: Figure shows the geometry of a strip foðting supporting the load bearing walls of a three storied…

Q: |!;9 ELABORATE Try solving the following problem: Practice Problem: The following are the results of…

Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was
tested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the time
with dial gauge readings are:
Time (min)
0
Settlement (mm) 0
0.25 1
0.22
0.42
Vertical pressure (kPa) 15
Settlement (mm)
0.1
Void ratio
1.88
4
0.6
30
0.11
1.87
9
0.71
16
0.79
And the void ratio and settlement for each load increment is shown in the table
below.
60
0.21
1.85
120
1.13
1.72
100
1.04
36
64
0.91
0.86
240
2.17
1.57
480
3.15
1.43
1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848.
2- Find Preconsolidation pressure (oc) and compression index (Cc).
Scanned by TapScanner

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: Coefficient of consolidation, Cv

VIEW

Step 3: Preconsolidated pressure and Compression Index.

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 1 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

Calculate the settlement of the 10-ft-thick clay layer that will result from the load carried by a 5-ft-square footing. The clay is normally consolidated. Use the 2:1 method to calculate the average increase of effective pressure in the clay layer. 10 ft 10 ft 10 ft 5 ft ↓ Dry sand Footing size 5 ft x 5ft Sand Clay Ydry = 100 pcf Groundwater table Ysat = 120 pcf Ysat = 110 pcf % = 1.0 LL=40
Q18 Please provide justified answer asap
A soil nail proposed to be installed under the conditions given below is designed against unfactored working force of 50KN. • Ground described as sandy gravel. • Soil nail installed at an angle of 10 degrees to the horizontal and 1.2 m below the ground surface. • Nail dimensions: total length = 5 m with 60% bonded, bonded diameter = 0.35 m, debonded diameter = 0.15 m Assuming parameters not given and considering the water able to be at the surface, propose the suitable type of soil nail and calculate the theoretical working factor of safety of the installed nail against pull out. Also, briefly discuss what would jeopardise your theoretical predictions of the nail performance.
A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure below. Calculate the coefficient of consolidation in mm2/min if an average degree of consolidation of 30% was measured on site 90 days after the start of the loading event. (acceptable tolerance = 10%).
9. Following results are obtained from laboratory consolidation testing: Effective vertical pressure Void ratio 'e' o' (kPa) Remark 23.94 1.03 Loading 47.88 1.02 95.76 0.98 191.52 0.91 383.04 0.79 766.08 0.71 1532.16 0.62 766.08 0.635 Unloading 383.04 0.655 191.52 0.67 Calculate the following 1) Pre-consolidation pressure. 2) Compression index and the swell index. 3) Void ratio at a pressure of 1150 kPa
Results of a lavoratory consolidation test on a 5 meter thick clay (at a site) indicates t 50 = 12.2 minutes for the load increment of 8 tons/ sq ft. The lab sample had drainage on top and on the bottom. The lab sample height is 1.582 cm. a. Determine the coefficient of consolidation for the load range in cm squared/min. b. Based on the laboratory results above (a), compute the time it will take for 100 % consolidation of the 5 meter thick clay layer in the field. A sand layer overlies the clay layer and impervious rock underlies the clay layer. Answer the time in years.
It is not marked questions. Plz, solve the two parts of this problem and try to solve it step by step, plz, solve the problem using my Reg.No : 5395. This is the Reg.No : 5395 Irrigation Engineering Q.1. Figure 1 can be seen a section of a hydraulic structure on permeable foundation. Calculate the average hydraulic gradient according to a) Bligh’s creep theory b) Lane’s weighted creep theory Also, find the uplift pressures at points A and B, and the floor thickness required at these points.