1. The bearing capacity of a foundation refers to the ability of the soil to carry the loads from structures placed on it without shear failure or excessive settlement.
2. Terzaghi's bearing capacity theory separates the failure zone under a foundation into triangular and radial shear zones, and considers the equilibrium of forces within these zones to calculate the ultimate bearing capacity.
3. The allowable bearing capacity is calculated by applying a safety factor to the ultimate capacity to avoid shear failure. Settlement criteria may further limit the allowable capacity.
Geotechnical Engineering-II [Lec #17: Bearing Capacity of Soil]Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
This slide will help you to determine the immediate settlement for flexible foundation i.e. isolate footing and rigid foundation i.e. matt or raft foundation. To be more clear about the topic a numerical problem with the solution is given.
Geotechnical Engineering-II [Lec #17: Bearing Capacity of Soil]Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
This slide will help you to determine the immediate settlement for flexible foundation i.e. isolate footing and rigid foundation i.e. matt or raft foundation. To be more clear about the topic a numerical problem with the solution is given.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Geotechnical Engineering-II [Lec #3: Direct Shear Test)Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Geotechnical Engineering-II [Lec #3: Direct Shear Test)Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
PREDICTING BEARING STRENGTH CHARACTERISTICS FROM SOIL INDEX PROPERTIESIAEME Publication
The bearing strength of foundation soil is a major design criteria for civil engineering structures. This study aims to estimate the bearing strength, namely California Bearing Ratio (CBR) and ultimate bearing capacity, from simple and easy measured soil index properties. Comprehensive literature concerning bearing strength characteristics and their prediction equations proposed by previous researchers were reviewed. Laboratory investigation was conducted on two different soils compacted at various placement conditions (i.e. moisture content and dry density) and tested using CBR and triaxial tests. Based on test results, linear relationships of unsoaked CBR and ultimate bearing capacity with the consistency factor which is formed by combining placement conditions and soil intrinsic parameters had been developed.
The current drilled shaft (also called bored pile) foundation design procedures recommended in two commonly used North American foundation engineering manuals have been reviewed, and the recommended design approache from each manual is evaluated against the recent load test data conducted on continuous flight auger (CFA), cast-in-place concrete piles (augercast piles). The soil conditions where pile load tests were carried out is typical of glacial till encountered in the Canadian Prairies. The conclusion is that pile capacity prediction methods widely used in North America generally under estimate both skin resistance and end bearing for drilled shaft in very stiff to hard glacial till. For design purpose, for drilled, cast in-place concrete piles installed in glacial till soils in Western Canada, procedure recommended by Federal Highway Administration (FHWA) is recommended.
Bearing capacity of shallow foundations by abhishek sharma ABHISHEK SHARMA
elements you should know about bearing capacity of shallow foundations are included in it. various indian standards are also used. Bearing capacity theories by various researchers are also included. numericals from GATE CE and ESE CE are also included.
Cricket balls behave differently at various stages of the game depending upon how much wear and tear has taken place due to use. The playing performance of cricket balls depends largely on the surface texture. The ball is swung using the primary seam during the early stages of the game but later the surface roughness starts to affect the lateral movement. This work attempts to find a quantitative measure of the surface roughness of cricket balls and then uses it to discriminate between new and old balls. Area-scale fractal analysis is used to find the surface roughness in order discriminate between the balls. FTEST (a statistical tool) is also used to establish a discriminatory criterion between the old and new balls. Wind tunnel test results are presented to show the relationship between the surface roughness and drag. Finally a correlation between the roughness and drag of the cricket is shown.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
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Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
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The Benefits and Techniques of Trenchless Pipe Repair.pdf
4.0 bearing capacity shallow foundations
1. 4
Bearing Capacity of Foundation
Prof. E.Saibaba Reddy
B.Tech, M.E.(Hons) Roorkee, Ph.D (Nottingham, UK)
Post Doc,(Halifax Canada), Post Doc (Birmingham UK)
&
Eadala Rakesh Reddy
B.Tech (JNTUH), M.Tech (VSSUT-Gold Medal),
(Ph.D)- Andhra University-DST-Inspire Fellow
Chief Consultant –EE Engineering Construction Services
2. References
ACI 318M-14 Building Code Requirements for Structural
Concrete ( ACI 318M -14) and Commentary, American
Concrete Institute, ISBN 978-0-87031-283-0.
Bowles , J.,E.,(1996) “Foundation Analysis and Design” -5th
ed. McGraw-Hill, ISBN 0-07-912247-7.
Das, B., M. (2012), “ Principles of Foundation Engineering ”
Eighth Edition, CENGAGE Learning,
ISBN-13: 978-1-305-08155-0.
2
3. Bearing Capacity ofFoundation
The soil must be capable of carrying the loads from
any engineered structure placed upon it without a
shear failure and with the resulting settlements
being tolerable for that structure.
This lecture will be concerned with evaluation
of the limiting shear resistance, or ultimate
bearing capacity quSt of the soil under a
foundation load.
3
4. Bearing Capacity ofFoundation
It is necessary to investigate both base shear
resistance and settlements for any structure.
In many cases settlement criteria will control
the allowable bearing capacity; however, there
are also a number of cases where base shear (in
which a base punches into the ground - usually
with a simultaneous rotation) dictates the
recommended bearing capacity.
4
5. Bearing Capacity ofFoundation
Structures such as liquid storage tanks and mats are
often founded on soft soils, which are usually more
susceptible to base shear failure than to settlement.
Base shear control, to avoid a combination base
punching with rotation into the soil, is often of more
concern than settlement for these foundation types.
5
6. Allowable Bearing Capacity
The recommendation for the allowable bearing
capacity qaSSto be used for design is based on the
minimum of either:
1. Limiting the settlement to a tolerable amount
2.The ultimate bearing capacity, which considers soil
strength, as computed in the following sections
6
7. Allowable Bearing Capacity
The allowable bearing capacity based on shear
control qaSSis obtained by reducing (or dividing)
the ultimate bearing capacity quSt (based on soil
strength) by a safety factor SF that is deemed
adequate to avoid a base shear failure to obtain
qaSS = qult
S.F
(2-1)
The safety factor is based on the type of soil (cohesive or cohesionless),
reliability of the soil parameters, structural information (importance,
use, etc.), and consultant caution.
7
8. Allowable Bearing Capacity
Most building codes provide an allowable
settlement limit for a foundation, which
may be well below the settlement derived
corresponding to qaSS given by equations( 2-1).
Thus, the bearing capacity corresponding to the
allowable settlement must also be taken into
consideration.
8
9. BEARING-CAPACITY EQUATIONS
Terzaghi’s Bearing Capacity Theory
Terzaghi (1943) was the first to present a comprehensive
theory for the evaluation of the ultimate bearing capacity
of rough shallow foundations. According to this theory, a
foundation is shallow if its depth, Df (Figure slid 11), is
less than or equal to its width. Later investigators,
however, have suggested that foundations with Df equal
to 3 to 4 times their width may be defined as shallow
foundations.
9
10. BEARING-CAPACITY EQUATIONS
Terzaghi’s Bearing Capacity Theory
Terzaghi suggested that for a continuous, or strip, foundation
(i.e., one whose width-to-length ratio approaches zero), the
failure surface in soil at ultimate load may be assumed to be
similar to that shown in Figure on Slide 11.
The effect of soil above the bottom of the foundation may also
be assumed to be replaced by an equivalent surcharge, q = y ∗ Dƒ
(where y is the unit weight of soil).
10
11. BEARING-CAPACITY EQUATIONS
Terzaghi’s Bearing Capacity Theory
The failure zone under the foundation can be
separated into three parts (see Figure 4.6):
1.The triangular zone ACD immediately under
the foundation
2.The radial shear zones ADF and CDE, with the
curves DE and DF being arcs of a logarithmic
spiral
3.Two triangular Rankine passive zones AFH
and CEG
11
12. BEARING-CAPACITY EQUATIONS
Terzaghi’s Bearing Capacity Theory
The angles CAD and ACD are assumed to be equal to the
soil friction angle ∅u.
Note that, with the replacement of the soil above the bottom
of the foundation by an equivalent surcharge q, the shear
resistance of the soil along the failure surfaces GI and HJ
was neglected.
12
15. BEARING-CAPACITY EQUATIONS
Terzaghi’s Bearing Capacity Theory
The ultimate bearing capacity,quSt, of the foundation
now can be obtained by considering the equilibrium of the
triangular wedge ACD shown in Figure below
15
61. BEARING-CAPACITY ofMat Foundation
The net allowable soil bearing capacity
qaSS (net)
quSt(net)
=
S. F
For mats on clay, the factor of safety should not be less
than 3 under dead load or maximum live load.
Under most working conditions, the factor of safety
against bearing capacity failure of mats on sand is
very large.
61
62. BEARING-CAPACITY ofMat Foundation
Bearing Capacity from SPT
The net allowable bearing capacity for mats constructed over
granular soil deposits can be adequately determined from the
standard penetration resistance numbers
qaSS (net) =
55
0.08
Fd
N Se (nn)
qaSS(net) = 16.63 N55
25
Se(n n )
25
62