International Refereed Journal of Engineering and Science (IRJES) is a leading international journal for publication of new ideas, the state of the art research results and fundamental advances in all aspects of Engineering and Science. IRJES is a open access, peer reviewed international journal with a primary objective to provide the academic community and industry for the submission of half of original research and applications
Performance of square footing resting on laterally confined sandeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Overview of Soil Stabilization :Cement / Lime :PPTAniket Pateriya
Soil-cement is frequently used as a construction material for pipe bedding, slope protection, and road construction as a sub-base layer reinforcing and protecting the subgrade. It has good compressive and shear strength, but is brittle and has low tensile strength, so it is prone to forming cracks.
Lime can be used to treat soils to varying degrees, depending upon the objective. The least amount of treatment is used to dry and temporarily modify soils. Such treatment produces a working platform for construction or temporary roads. A greater degree of treatment supported by testing, design, and proper construction techniques--produces permanent structural stabilization of soils.
Performance of square footing resting on laterally confined sandeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Overview of Soil Stabilization :Cement / Lime :PPTAniket Pateriya
Soil-cement is frequently used as a construction material for pipe bedding, slope protection, and road construction as a sub-base layer reinforcing and protecting the subgrade. It has good compressive and shear strength, but is brittle and has low tensile strength, so it is prone to forming cracks.
Lime can be used to treat soils to varying degrees, depending upon the objective. The least amount of treatment is used to dry and temporarily modify soils. Such treatment produces a working platform for construction or temporary roads. A greater degree of treatment supported by testing, design, and proper construction techniques--produces permanent structural stabilization of soils.
introduction to soil stabilization and introduction to geo textiles and synth...husna004
Stabilization is the process of blending and mixing materials with a soil to improve certain properties of the soil. The process may include the blending of soils to achieve a desired gradation or the mixing of commercially available additives that may alter the gradation, texture or plasticity, or act as a binder for cementation of the soil.
Pavement materials in Road Constructionsrinivas2036
Different pavement materials used in the road construction. Importance of soil, aggregate pavement materials. Tests on Soil for pavement construction. Tests on aggregate for pavement construction.
Requirements of soil and aggregates in pavement.
Geotextiles, Soil Stabilization Woven slit films are preferred for hardscape applications such as under walkways, roads,... Non-woven geotextiles resemble felt and provide a path for water to flow. Polyspun materials are prefered for weed control applications due to their high strength... ...
geotextile fabric for drainage
geotextile fabric for road construction
geotextile fabric pricing
geotextile fabric for gravel driveways
geotextile filter fabric
geotextile fabric home depot
non woven geotextile fabric suppliers
us fabrics geotextile prices
subgrade stabilization geotextile
subgrade stabilization methods
woven geotextile mirafi
mirafi soil stabilization fabric
soil stabilization grid
cement stabilization calculator
soil stabilization mat
soil stabilization products
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
Soil stabilization with cement, bitumen, lime, chemical stabilization,geotextile, grouting etc. are discussed. It is a method of improving soil properties by blending and mixing other materials.
Loose granular sand deposits formed during the land reclamation process are vulnerable to
liquefaction upon imparting seismic forces. These loose granular sand fills could encounter
bearing failures or compress beyond tolerable limits under static and dynamic loads
Overview of Soil Stabilization :Cement / Lime:ReportAniket Pateriya
Soil-cement is frequently used as a construction material for pipe bedding, slope protection, and road construction as a sub-base layer reinforcing and protecting the subgrade. It has good compressive and shear strength, but is brittle and has low tensile strength, so it is prone to forming cracks.
Lime can be used to treat soils to varying degrees, depending upon the objective. The least amount of treatment is used to dry and temporarily modify soils. Such treatment produces a working platform for construction or temporary roads. A greater degree of treatment supported by testing, design, and proper construction techniques--produces permanent structural stabilization of soils.
Stabilization in a broad sense incorporates the various methods employed for modifying the properties of a soil to improve its engineering performance. Stabilization is being used for a variety of engineering works, the most common application being in the construction of road and airfield pavements, where the main objective is to increase the strength or stability of soil and to reduce the construction cost by making best use of locally available materials.
Ground improvement technioques for high waysAMIT SHIDURKAR
'Ground improvement technioques for high ways' powerpoint presentation for civil engineering students. before any construction we should be well known about the characteristics of strata present at site and also how to improve bearing capacity of the soil. this presentation is focused on improvement of ground for construction of highways...!! for more powerpoints related to civil engineering you can contact me anytime on my mail id shidurkar007@gmail.com
International Refereed Journal of Engineering and Science (IRJES)irjes
International Refereed Journal of Engineering and Science (IRJES) is a leading international journal for publication of new ideas, the state of the art research results and fundamental advances in all aspects of Engineering and Science. IRJES is a open access, peer reviewed international journal with a primary objective to provide the academic community and industry for the submission of half of original research and applications
International Refereed Journal of Engineering and Science (IRJES) is a peer reviewed online journal for professionals and researchers in the field of computer science. The main aim is to resolve emerging and outstanding problems revealed by recent social and technological change. IJRES provides the platform for the researchers to present and evaluate their work from both theoretical and technical aspects and to share their views.
www.irjes.com
introduction to soil stabilization and introduction to geo textiles and synth...husna004
Stabilization is the process of blending and mixing materials with a soil to improve certain properties of the soil. The process may include the blending of soils to achieve a desired gradation or the mixing of commercially available additives that may alter the gradation, texture or plasticity, or act as a binder for cementation of the soil.
Pavement materials in Road Constructionsrinivas2036
Different pavement materials used in the road construction. Importance of soil, aggregate pavement materials. Tests on Soil for pavement construction. Tests on aggregate for pavement construction.
Requirements of soil and aggregates in pavement.
Geotextiles, Soil Stabilization Woven slit films are preferred for hardscape applications such as under walkways, roads,... Non-woven geotextiles resemble felt and provide a path for water to flow. Polyspun materials are prefered for weed control applications due to their high strength... ...
geotextile fabric for drainage
geotextile fabric for road construction
geotextile fabric pricing
geotextile fabric for gravel driveways
geotextile filter fabric
geotextile fabric home depot
non woven geotextile fabric suppliers
us fabrics geotextile prices
subgrade stabilization geotextile
subgrade stabilization methods
woven geotextile mirafi
mirafi soil stabilization fabric
soil stabilization grid
cement stabilization calculator
soil stabilization mat
soil stabilization products
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
Soil stabilization with cement, bitumen, lime, chemical stabilization,geotextile, grouting etc. are discussed. It is a method of improving soil properties by blending and mixing other materials.
Loose granular sand deposits formed during the land reclamation process are vulnerable to
liquefaction upon imparting seismic forces. These loose granular sand fills could encounter
bearing failures or compress beyond tolerable limits under static and dynamic loads
Overview of Soil Stabilization :Cement / Lime:ReportAniket Pateriya
Soil-cement is frequently used as a construction material for pipe bedding, slope protection, and road construction as a sub-base layer reinforcing and protecting the subgrade. It has good compressive and shear strength, but is brittle and has low tensile strength, so it is prone to forming cracks.
Lime can be used to treat soils to varying degrees, depending upon the objective. The least amount of treatment is used to dry and temporarily modify soils. Such treatment produces a working platform for construction or temporary roads. A greater degree of treatment supported by testing, design, and proper construction techniques--produces permanent structural stabilization of soils.
Stabilization in a broad sense incorporates the various methods employed for modifying the properties of a soil to improve its engineering performance. Stabilization is being used for a variety of engineering works, the most common application being in the construction of road and airfield pavements, where the main objective is to increase the strength or stability of soil and to reduce the construction cost by making best use of locally available materials.
Ground improvement technioques for high waysAMIT SHIDURKAR
'Ground improvement technioques for high ways' powerpoint presentation for civil engineering students. before any construction we should be well known about the characteristics of strata present at site and also how to improve bearing capacity of the soil. this presentation is focused on improvement of ground for construction of highways...!! for more powerpoints related to civil engineering you can contact me anytime on my mail id shidurkar007@gmail.com
International Refereed Journal of Engineering and Science (IRJES)irjes
International Refereed Journal of Engineering and Science (IRJES) is a leading international journal for publication of new ideas, the state of the art research results and fundamental advances in all aspects of Engineering and Science. IRJES is a open access, peer reviewed international journal with a primary objective to provide the academic community and industry for the submission of half of original research and applications
International Refereed Journal of Engineering and Science (IRJES) is a peer reviewed online journal for professionals and researchers in the field of computer science. The main aim is to resolve emerging and outstanding problems revealed by recent social and technological change. IJRES provides the platform for the researchers to present and evaluate their work from both theoretical and technical aspects and to share their views.
www.irjes.com
International Refereed Journal of Engineering and Science (IRJES)irjes
International Refereed Journal of Engineering and Science (IRJES) is a leading international journal for publication of new ideas, the state of the art research results and fundamental advances in all aspects of Engineering and Science. IRJES is a open access, peer reviewed international journal with a primary objective to provide the academic community and industry for the submission of half of original research and applications.
International Refereed Journal of Engineering and Science (IRJES) is a peer reviewed online journal for professionals and researchers in the field of computer science. The main aim is to resolve emerging and outstanding problems revealed by recent social and technological change. IJRES provides the platform for the researchers to present and evaluate their work from both theoretical and technical aspects and to share their views.
www.irjes.com
International Refereed Journal of Engineering and Science (IRJES)irjes
International Refereed Journal of Engineering and Science (IRJES) is a leading international journal for publication of new ideas, the state of the art research results and fundamental advances in all aspects of Engineering and Science. IRJES is a open access, peer reviewed international journal with a primary objective to provide the academic community and industry for the submission of half of original research and applications
International Refereed Journal of Engineering and Science (IRJES) is a peer reviewed online journal for professionals and researchers in the field of computer science. The main aim is to resolve emerging and outstanding problems revealed by recent social and technological change. IJRES provides the platform for the researchers to present and evaluate their work from both theoretical and technical aspects and to share their views.
Effect of encasement length on geosynthetic reinforced stone columnseSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Cars are a very important part of this modern world because they give luxury and comfort. Even
though they are comfortable, some problems always keep arising on the safety side. After a lot of research they
rectified certain problems using air bags, auto parking, turbo charger, pedal shift…, etc.
And now we are going to discuss about one such problem that arises on the safety side. An unsuspected
accident occurs when people smash their fingers in between the car doors. Due to this kind of accident around
120,000 people are injured every year. But this was not taken as a very major safety concern for the customer.
To avoid this kind accident due to car doors, we are introducing “SAFETY DOOR LOCK SYSTEM”
with the help of “HYDRAULIC PISTON AND IR SENSORS”.
The major working process of the “SAFETY DOOR LOCK SYSTEM”is, when a person places his/her
hand or fingers in the gap between the door and the outer panel, at the time when the closing action of the door
takes place, the Sensors start to transmit the Infra Red Rays to the Receivers at the
other end, and so even if someone closes the door without anybody‟s knowledge the hydraulic piston will
automatically come out and stop the door from closing and prevent the person from the unsuspected accident
and minor injuries by the car door and ensure maximum safety to the customer.
Extrusion can be defined as the process of subjecting a material to compression so that it is forced to
flow through an opening of a die and takes the shape of the hole. Multi-hole extrusion is the process of
extruding the products through a die having more than one hole. Multi-hole extrusion increases the production
rate and reduces the cost of production. In this study the ram force has calculated experimentally for single hole
and multi-hole extrusion. The comparison of ram forces between the single hole and multi-hole extrusion
provides the inverse relation between the numbers of holes in a die and ram force. The experimental lengths of
the extruded products through the various holes of multi-hole die are different. It indicates that the flow pattern
is dependent on the material behavior. The micro-hardness test has done for the extruded products of lead
through multi-hole die. It is observed that the hardness of the extruded lead products from the central hole is
found to be more than that of the products extruded from other holes. The study suggests that multi-hole
extrusion can be used for obtaining the extruded products of lead with varying hardness. The micro-structure
study has done for the lead material before and after extrusion. It is observed that the size of grains of lead
material after extrusion is smaller than the original lead.
Analysis of Agile and Multi-Agent Based Process Scheduling Modelirjes
As an answer of long growing frustration of waterfall Software development life cycle concepts,
agile software development concept was evolved in 90’s. The most popular agile methodologies is the Extreme
Programming (XP). Most software companies nowadays aim to produce efficient, flexible and valuable
Software in short time period with minimal costs, and within unstable, changing environments. This complex
problem can be modeled as a multi-agent based system, where agents negotiate resources. Agents can be used to
represent projects and resources. Crucial for the multi-agent based system in project scheduling model, is the
availability of an effective algorithm for prioritizing and scheduling of task. To evaluate the models, simulations
were carried out with real life and several generated data sets. The developed model (Multi-agent based System)
provides an optimized and flexible agile process scheduling and reduces overheads in the software process as it
responds quickly to changing requirements without excessive work in project scheduling.
Effects of Cutting Tool Parameters on Surface Roughnessirjes
This paper presents of the influence on surface roughness of Co28Cr6Mo medical alloy machined
on a CNC lathe based on cutting parameters (rotational speed, feed rate, depth of cut and nose radius).The
influences of cutting parameters have been presented in graphical form for understanding. To achieve the
minimum surface roughness, the optimum values obtained for rpm, feed rate, depth of cut and nose radius were
respectively, 318 rpm, 0,1 mm/rev, 0,7 mm and 0,8 mm. Maximum surface roughness has been revealed the
values obtained for rpm, feed rate, depth of cut and nose radius were respectively, 318 rpm, 0,25 mm/rev, 0,9
mm and 0,4 mm.
Possible limits of accuracy in measurement of fundamental physical constantsirjes
The measurement uncertainties of Fundamental Physical Constants should take into account all
possible and most influencing factors. One from them is the finiteness of the model that causes the existence of
a-priori error. The proposed formula for calculation of this error provides a comparison of its value with the
actual experimental measurement error that cannot be done an arbitrarily small. According to the suggested
approach, the error of the researched Fundamental Physical Constant, measured in conventional field studies,
will always be higher than the error caused by the finite number of dimensional recorded variables of physicalmathematical
models. Examples of practical application of the considered concept for measurement of fine
structure constant, speed of light and Newtonian constant of gravitation are discussed.
Performance Comparison of Energy Detection Based Spectrum Sensing for Cogniti...irjes
With the rapid deployment of new wireless devices and applications, the last decade has witnessed a growing
demand for wireless radio spectrum. However, the policy of fixed spectrum assignment produces a bottleneck for more
efficient spectrum utilization, such that a great portion of the licensed spectrum is severely under-utilized. So the concept of
cognitive radio was introduced to address this issue.The inefficient usage of the limited spectrum necessitates the
development of dynamic spectrum access techniques, where users who have no spectrum licenses, also known as secondary
users, are allowed to use the temporarily unused licensed spectrum. For this purpose we have to know the presence or
absence of primary users for spectrum usage. So spectrums sensing is one of the major requirements of cognitive radio.Many
spectrum sensing techniques have been developed to sense the presence or absence of a licensed user. This paper evaluates
the performance of the energy detection based spectrum sensing technique in noisy and fading environments.The
performance of the energy detection technique will be evaluated by use of Receiver Operating Characteristics (ROC) curves
over additive white Gaussian noise (AWGN) and fading channels.
Comparative Study of Pre-Engineered and Conventional Steel Frames for Differe...irjes
In this paper, the conventional steel frames having triangular Pratt truss as a roofing system of 60 m
length, span 30m and varying bay spacing 4m, 5m and 6m respectively having eaves level for all the portals is at
10m and the EOT crane is supported at the height of 8m from ground level and pre-engineered steel frames of
same dimensions are analyzed and designed for wind zones (wind zone 2, wind zone 3, wind zone 4 and wind
zone 5) by using STAAD Pro V8i. The study deals with the comparative study of both conventional and preengineered
with respect to the amount of structural steel required, reduction in dead load of the structure.
Flip bifurcation and chaos control in discrete-time Prey-predator model irjes
The dynamics of discrete-time prey-predator model are investigated. The result indicates that the
model undergo a flip bifurcation which found by using center manifold theorem and bifurcation theory.
Numerical simulation not only illustrate our results, but also exhibit the complex dynamic behavior, such as the
periodic doubling in period-2, -4 -8, quasi- periodic orbits and chaotic set. Finally, the feedback control method
is used to stabilize chaotic orbits at an unstable interior point.
Energy Awareness and the Role of “Critical Mass” In Smart Citiesirjes
A Smart City could be depicted as a place, logical and physical, in which a crowd of heterogeneous
entities is related in time and space through different types of interactions. Any type of entity, whether it is a
device or a person, clustered in communities, becomes a source of context-based data.
Energy awareness is able to drive the process of bringing our society to limit energy waste and to optimize
usage of available resources, causing a strong environmental and social impact. Then, following social network
analysis methodologies related to the dynamics of complex systems, it is possible to find out, emergent and
sometimes hidden new habits of electricity usage. Through an initial Critical Mass, involving a multitude of
consumers, each related to more contexts, we evaluate the triggering and spreading of a collective attitude. To
this aim, in this paper, we propose a novel analytical model defining a new concept of critical mass, which
includes centrality measures both in a single layer and in a multilayer social network.
A Firefly Algorithm for Optimizing Spur Gear Parameters Under Non-Lubricated ...irjes
Firefly algorithm is one of the emerging evolutionary approaches for complex and non-linear
optimization problems. It is inspired by natural firefly‟s behavior such as movement of fireflies based on
brightness and by overcoming the constraints such as light absorption, obstacles, distance, etc. In this research,
firefly‟s movement had been simulated computationally to identify the best parameters for spur gear pair by
considering the design and manufacturing constraints. The proposed algorithm was tested with the traditional
design parameters and found the results are at par in less computational time by satisfying the constraints.
The Effect of Orientation of Vortex Generators on Aerodynamic Drag Reduction ...irjes
One of the main reasons for the aerodynamic drag in automotive vehicles is the flow separation
near the vehicle’s rear end. To delay this flow separation, vortex generators are used in recent vehicles. The
vortex generators are commonly used in aircrafts to prevent flow separation. Even though vortex generators
themselves create drag, but they also reduce drag by delaying flow separation at downstream. The overall effect
of vortex generators is more beneficial and proved by experimentation. The effect depends on the shape,size and
orientation of vortex generators. Hence optimized shape with proper orientation is essential for getting better
results.This paper presents the effect of vortex generators at different orientation to the flow field and the
mechanism by which these effects takes place.
An Assessment of The Relationship Between The Availability of Financial Resou...irjes
The availability of financial resources is an important element in impacting the success of a planning
process for an effective physical planning. The extent to which however, they are articulated in the process
remained elusive both in scholarly and public discourse. The objective of this study wastherefore, to examine
the extent to which financial resources affect physical planning. In doing so, the study examinedwhether
financial resources were adequate or not to facilitate planning processes in Paidha. According to the study
findings,budget prioritization and ceilings are still a challenge in Paidha Town Council. This is partly due
limited level of knowledge of physical planning among the officials of Paidha Town Council. As a result, there
were no dedicated budget line for routine inspection of physical development plan compliance and enforcement
tools in Paidha. In conclusion, in addressing uncoordinated patterns of physical development that characterize
Uganda‟s urban centres, a critical starting point ought to be the analysis of physical planning process. The
research of this kind is not only significant to other emerging urban centres facing poor a road network,
mushrooming informal settlements and poor social services including poor pattern of residential and commercial
developments but also to all institutions that are involved in planning these towns. Knowing the extent of need
for financial influences in planning may assist local authorities to take the processes of planning seriously which
will help enhance the sustainable development of emerging urban centres including Paidha.
The Choice of Antenatal Care and Delivery Place in Surabaya (Based on Prefere...irjes
- Person's desire to do a pregnancy examination is determined by the service place that suits the tastes
and facilities owned by it. Until now, the utilization of antenatal care by pregnant women is still low (Mardiana,
2014). The purpose of the study is to analyze factors affecting the utilization of antenatal care and delivery place
in Surabaya city based on the preferences and choice theory.
Type of survey research is cross sectional approach, the population is mothers who have children aged 1-
12 months in Surabaya. The large sample of 250 mothers who have children aged 1-12 months in 2013 is taken
by simple random sampling technique. Variables of the research are the preference elements and steps, choice
elements and steps, utilization of antenatal care and delivery place. Data were collected through questionnaires
and secondary data were then analyzed with descriptive statistics in the form of a frequency distribution, shown
by the schematic diagram.
The result showed that the preference elements and steps showed almost half (42.9%) desire to give birth
in a health care because of information got from someone else, while the choice element and step shows the
bulk (57.1%) of the criteria of delivery place chosen is a safe, comfortable and cheap delivery place, the labor
place which is the main choice most (57.1%) is cheap, comfortable, close.
Conclusion of the research based on the preferences and choice theory can be found three (3) new
theories, they are preferences become choice, preferences do not become choice, choice is preceded by
preferences
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
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International Refereed Journal of Engineering and Science (IRJES)
1. International Refereed Journal of Engineering and Science (IRJES)
ISSN (Online) 2319-183X, (Print) 2319-1821
Volume 2, Issue 5(May 2013), PP. 54-62
www.irjes.com
www.irjes.com 54 | Page
A Practical Approach For Computing Soil Bearing Capacity
Under Shallow Foundations Using Vibro-Replacement Method
Mansour N. Jadid
(Department of Building Science & Technology, University of Dammam, Saudi Arabia)
ABSTRACT : This paper presents a practical approach for designing, erecting, and testing stone columns
using the vibro-replacement method to improve soil bearing capacity under shallow foundations (isolated and
raft foundations) for any typical building under small or medium loading conditions. Usually, the vibro-
replacement method is used in soils with cohesive layers of mixed deposits, loose sand, or both. Vibro-
replacement methods create reinforced, compacted columns in poor soils, which provide reinforcement for soft
cohesive soils to improve bearing capacity and reduce settlement. Vibro technologies provide quick and cost-
effective solutions for areas of weak and unconsolidated soils. Usually, a geotechnical consultant suggests
alternative methods for improving the engineering characteristics of subsoil at a selected site by several
methods such as piles, complete replacement using backfill, and improving the subsoil using the vibro-
replacement method (stone columns), the method considered in this study. A backfill size of aggregate material
from limestone quarries ranging from 2.50 mm to 10 mm is recommended for stone columns. A 300 mm-thick
layer of well-compacted fill material is suggested as a sandwich between the bottom of the foundation and the
stone columns as a practical procedure after completion of soil improvement and removal of mud to provide
uniformity of foundation loading on the soil.
Keywords - Backfill, bearing, borehole, foundation, practical, shallow, stone columns, penetration, Soil
I. INTRODUCTION
Constructing buildings on weak soil normally requires soil investigations to improve the soil bearing
capacity and reduce settlement. Initially, borehole testing and geotechnical investigations are carried out to a
certain depth below the surface to determine the existing soil conditions. This makes it possible to determine the
appropriate method for improving the soil bearing capacity and reducing settlement by selecting the method that
satisfies the loading conditions and is cost-effective.
The improvement of weak soil deposits by stone columns has now become a well-established method
for improving the bearing capacity and settlement characteristics of soft soils, [1,2]. A method to improve
collapsible soil by using encapsulated stone columns, which is efficient for lightweight structure building has
been established [3]. The behavior of a stone column in a collapsible fill and a column in a non-collapsible fill
where reported by suggesting solution for the problem of stone column failure [4].
Stone columns are constructed in cases where soil improvement can be achieved by reinforcing weak soils with
densely compacted granular columns. This method provides for reinforcement of soft cohesive soils to improve
bearing capacity, reduce settlement, and improve the stability of embankments and slopes. The stone column
technique is ideally suited for improving soft silts, clays, and loose silty sands.
When properly installed within soft soil, the stone column treatment produces a composite material
with unique characteristics. The high internal frictional resistance of the stone conveys a significant frictional
component to the treated composite, improving both its strength and its deformational behavior. The level of
improvement depends on the soil type, column installation technique, relative spacing of the columns, and
column diameter. The unique characteristics of stone columns can provide innovative and cost-effective
solutions for many unusual geotechnical problems as well as for many more routine applications. Gravel
backfill is deposited into holes in increments of 0.4 to 0.8 m and compacted by the probe, which simultaneously
displaces the material radially into the soft soil. The diameter of the resulting stone column is usually between
0.6 and 1.0 m, but columns of larger diameter can be constructed using two or three vibrators simultaneously as
mentioned [2].
Generally, a proper installation is essential for producing high-quality stone columns. Because stone is
a frictional material possessing negligible cohesion, the confining pressure applied by the soil is of vital
importance. As quality assurance to ensure proper vibro-replacement execution, the following procedure is
recommended:
A pre-test of minimum one Dutch cone penetration test as suggested [5] or one borehole for every 500
square meters
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A post-test of at least one Dutch cone test, [5] or one borehole for every 500 square meters
A full-load plate test to verify the bearing capacity and settlement after the soil has been improved.
II. MECHANISM FOR SOIL IMPROVEMENT AND SUBSOIL CONDITIONS
The mechanism of the vibro-replacement method for soil improvement under shallow foundations
proceeds as follows:
Design of the stone columns
Procurement of backfill material
Pre-treatment Dutch cone penetration test
Stone column construction
Post-treatment Dutch cone penetration test
Plate load tests
Final report submission.
Ground improvement by the stone column technique can be used for any selected building to improve
the soil capacity under the foundations. The present investigation addresses shallow isolated and raft
foundations constructed according to design, and a final geotechnical report is required for a general review of
the soil condition. Assuming that the soil conditions are based on the borehole logs, the subsoil consists of silty
sand up to about 1.5 meters in depth, followed by very loose silty sand known up to 3.5 meters in depth. This
layer is underlain by medium dense to dense silty sand up to a variable depth between 5.5 to 6.5 meters below
the existing grade. The silty layer is followed by gravel and silty sand. A specialized contractor must be hired
for the installation of stone columns under foundation areas to improve the bearing capacity of the existing soil
so that settlement as a result of foundation loads remains within acceptable limits as determined by the design
consultant.
Values from the borehole for Standard Penetration Test –SPT– as specified [6] obtained from the
geotechnical report were plotted against the depth of the borehole log, and a design standard penetration test
(SPT) profile was selected for the purposes of soil improvement design and settlement analysis. Suitable soil
parameters are designed for the subsoil layer depending on the soil classification.
Table 1 shows the stone columns as designed for the unimproved soil parameters used in this study.
The design SPT values were converted to Cone Penetration Test (CPT) cone resistance based on the qc/N ratio
for sand. According to [7], the E-modulus used is 2qc, and the E-modulus proposed was between 2.5 and 3.5 qc.
The existing soil E-modulus was established using the correlation in this study by using Equation (1), and the
values are listed in Table 1:
E= 2.5 qc (1)
Where is E = soil modulus and qc is the cone resistance
III. DESCRIPTION OF FOUNDATIONS
The soil improvement depth depends on the existing soil density, soil type, foundation dimensions, and
foundation loads. The depth of soil improvement is selected so that the foundation settlement is less than
allowable limits. The bottom level of the foundation was selected as the working level. Table 2 shows footing
dimensions for a typical building. Figure (1) shows the foundation plan for a typical building, and Figure (2)
shows the stone column erection layout under the foundations, with a section showing the dimensions of the
four stone columns.
IV. BEARING CAPACITY, ALLOWABLE SETTLEMENT AND IMPROVEMENT OF SOIL DESIGN
Assuming that the target allowable bearing capacity after soil improvement under the foundations of
this building is 200 kN/m2
, the maximum allowable settlement specified for an isolated footing is 25 mm, and
the maximum allowable settlement for a raft foundation is 50 mm.
The VIBRI software developed [8], which is based on the design criteria provided by ‘PRIEBE’, was
used for soil design improvement. Based on the given bearing capacity for existing soil conditions, the VIBRI
program calculates the suitable spacing of stone columns of a specified nominal diameter, depth, and quality to
provide the required improvement. The improvement factor is denoted in the VIBRI output file as n2.
In the VIBRI output, the n2 values are used to enhance the existing soil properties and the Young’s
modulus of elasticity and thus to determine the corresponding settlement after soil improvement. The proposed
spacing is selected if the settlement is within the specified allowable limits. The settlement analysis is carried
out using the SPANNI program, [8] that enables estimation of settlement after soil improvement. The existing
soil parameters are used in the VIBRI program to design the stone column spacing for the given bearing
3. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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pressure of 200 kPa. The improvement factors obtained from the VIBRI program were used to calculate the
improved E-values of each subsoil layer.
Table 1 Parameters for stone columns in unimproved soil used in this investigation
Depthbelow
EGL
meter
Design
SPT
Unitweight
kN/m3
Submerged
unitWeight
kN/m3
Angleof
internal
friction
CohesionSu
kPa
Relationship
forE-value
Unimproved
E-value
kN/m2
Type
ofsoil
0.00 8 15.0 28.0 28 kPa
qc /N=0.4,
E=2.5qc
8000 sand
1.00 8 15.0 8.0 28 kPa
qc /N=0.4,
E=2.5qc
8000 Sand
1.5 8 15.0 8.0 28 kPa
qc /N=0.4,
E=2.5qc
8000 Sand
2.50 12 9.0 32 kPa
qc /N=0.4,
E=2.5qc
12000 Sand
4.50 35 9.0 38 kPa
qc /N=0.4,
E=2.5qc
35000 Sand
6.00 35 9.0 38 kPa
qc /N=0.4,
E=2.5qc
35000 Sand
7.00 23 10.0 33 kPa
qc /N=0.4,
E=2.5qc
23000 Sand
9.00 35 10 38 kPa
qc /N=0.4,
E=2.5qc
35000 Sand
Note: Water level = 2.5 m below existing grade level (EGL)
Required bearing capacity = 200 kPa at 1.5 m below ground level
Bottom elevation of foundation = existing grade
Table 2 Footing dimensions
Footing Width, m Length, m
F01 1.0 1.0
F02 1.5 1.5
F02’ 1.8 2.5
F03 3.0 3.0
F04 3.5 3.5
F05 4.0 4.0
F06 4.5 4.5
F07 4.8 4.8
F08 7.0 8.0
F09 8.0 8.0
F10 5.0 9.6
F11 5.0 10.0
F12 7.5 12.0
F13 5.5 16.4
F14 4.8 7.0
4. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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Figure 1 Typical foundation plan
5. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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Figure 2 Layout for typical stone column erection
6. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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The VIBRI and SPANNI outputs can be summarized as follows:
Target bearing capacity = 200 kN/m2
Nominal stone column diameter = 1000 mm
Stone column spacings on a 1.50 m by 1.50 m square grid and a 1.50 m by 1.50 m triangular grid are
suggested for all the foundations as shown in Table 3.
Using the stone column proposal described above, the expected settlements after soil improvement are
as follows:
For isolated foundations of width less than or equal to 4.8 meters, the expected settlement is less
than or equal to 25 mm
For foundations of width between 4.8 meters and 8.0 meters, the expected settlement is less than
or equal to 50 mm for a raft foundation.
Table 3 Area loading on square and triangular grids
Unit weight
20.0 kN/m3
Below
2.5 m
Depth
12.0 kN/m3
Below an area load on a square grid Below an area load on a triangular column grid
Column distance 1.5 m Column distance 1.50 m
Row distance 1.5 m Row distance 1.30 m
Grid area 2.25 m2
Grid area 1.95 m2
Load level 1.5 m Load level 1.50 m
Note: Foundation pressure = 200.00 kN/m2
, Constrained modulus = 120.0 MN/m2
,Friction angle = 42.5 Degrees
Pressure coefficient = 0.19, Considered depth = 9.0 m
V. COMPUTATIONAL OF E-MODULUS
Table 4 shows the improvement factors obtained from the VIBRI program for square and triangular
grids.
Table 4 Improvement factors Obtained from the VIBRI program for square and triangular grids
Allowable bearing capacity = 200 KPa
1.5 m Square grid 1.5 m Triangular grid
Depth
from EGL
(Top of
layer)
meter
Unimproved
E-value
kN/m2
Improvement
factor n2 from
VIBRI printouts
Improved
E- value
Improvement
factor n2 from
VIBRI
printouts
Improved
E-value
Remarks
0.00 8000 - -
1.00 8000 - -
1.50 8000 3.50 28000 4.02 32160
Stone
Column
2.50 12000 3.51 42120 3.99 47880
Stone
Column
4.50 35000 1.85 64750 1.98 69300
Stone
Column
6.00 35000 1.00 35000 1.00 35000
Stone
Column
7.00 23000 1.00 23000 1.00 23000
Untreated
Soil
9.00 35000 1.00 35000 1.00 35000
Untreated
Soil
Note:
Stone column diameter = 1000 mm
Stone column depth = 6.0 m below foundation level
7. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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VI. ESTIMATED SETTLEMENT OF FOUNDATIONS AFTER SOIL IMPROVEMENT
The estimated settlement of the foundation after soil improvement at the working pressure of 200
kN/m2
is shown in Table 5.
Table 5 Estimated settlement of the foundation after soil Improvement at working pressure
Serial
No.
Footing
number
Width
m
Length m
Stone column
grid
Grid
type
Estimated
settlement
mm
1 F01 1.0 1.0 - -
2 F02 1.5 1.5 1.5m x 1.5m ∆ 09
3 F02’ 1.8 2.50 1.5m x 1.5m ∆ 09
4 F03 3.0 3.0 1.5m x 1.5m ∆ 15
5 F04 3.5 3.5 1.5m x 1.5m 18
6 F05 4.0 4.0 1.5m x 1.5m ∆ 18
7 F06 4.5 4.5 1.5m x 1.5m ∆ 20
8 F07 4.8 4.8 1.5m x 1.5m 23
9 F08 7.0 8.0 1.5m x 1.5m 29
10 F09 8.0 8.0 1.5m x 1.5m ∆ 28
11 F10 5.0 9.6 1.5m x 1.5m ∆ 25
12 F11 5.0 10.0 1.5m x 1.5m ∆ 25
13 F12 7.0 12.0 1.5m x 1.5m ∆ 30
14 F13 5.0 16.4 1.5m x 1.5m ∆ 28
15 F14 4.8 7.01 1.5m x 1.5m 25
VII. PLATE LOAD TEST
A load test was performed to verify the requirements set by the geotechnical consultant as shown on
Table 6. A third-party neutral investigator is usually invited to perform the plate load test. The test was carried
out on four stone columns with footing size 1.5 m × 1.50 m × 0.30 m, according to the recommendations [9].
Table 6 The planning and control components
Allowable bearing capacity = 200 kN/m2
Maximum test pressure = 1.5 allowable bearing pressure = 300 kN/m2
Test plate size = 1500 mm x 1500 mm
Percentage
of age Load
Applied
pressure
kPa
Applied load
KN
Hydraulic jack
pressure
Bar
Minimum time for which load
is constant
Hour : minute
0 0 0 0 0:00
10 20 45 10 0:15
20 40 90 20 0:15
30 60 135 30 0:15
40 80 180 41 0:15
50 100 225 51 0:15
60 120 270 61 0:15
70 140 315 71 0:15
80 160 360 81 0:15
90 180 405 91 0:15
100 200 450 102 0:15
110 220 495 112 0:15
120 240 540 122 0:15
130 260 585 132 0:15
140 280 630 142 0:15
150 300 675 153 2:00
100 200 450 102 0:15
50 100 225 51 0:15
0 0 0 0 1:00
8. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
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The footing was loaded according to the configuration shown in Figure (3). The load was applied
using a 2×106
KN (200-ton) Lukas 2000 hydraulic jack with a piston area equal to 45240 mm2
reacting against
concrete blocks.
Figure 3 Configuration for loading test
VIII. CONCLUSION REMARKS
The stone columns were constructed to improve the deformation characteristics of the treated soil to
reduce primary settlement of the proposed structure. Using the calculated modulus value within a depth of
approximately 6 m from the existing grade and the information obtained from the post-improvement CPT test
results below approximately 6 m depth, the estimated allowable bearing pressure for the planned shallow
foundations of various sizes at the site was obtained. This approach reduced foundation settlement, improved
bearing capacity, and hence reduced footing size requirements, which enabled shallow footing construction and
stabilization of the slope.
The estimated allowable bearing pressure was taken as the lesser of the two values calculated based on
the following:
Settlement considerations as suggested [10], which have been used to calculate the allowable soil
bearing pressure for a tolerable total settlement of 25 mm.
Bearing capacity considerations based on the shear strength of the soil as mentioned [11], which have
been used within a safety factor of two.
IX. Acknowledgements
The author expresses his sincere thanks to Keller Grundbau GmbH for providing the necessary data and coding
for the VIBRI and SPANNI programs.
REFERENCES
[1] D.T Bergado, J.C Chai, M.C Alfaro and A.S Balasubramaniam Improvement Techniques for Soft Ground in Subsiding
and Lowland Environments, (A.A. Balkema/Rotterdam/Brookfield, Rotterdam, Netherlands, 1994).
[2] B.M. Das, Principles of Foundation Engineering, Practical, 7th
edition, (Publisher; Global Engineering: Christopher M.
Shortt, 2010).
9. A Practical Approach for Computing Soil Bearing Capacity under Shallow Foundations Using
www.irjes.com 62 | Page
[3] Ayadat, T., Hanna, A.M., Encapsulated Stone Columns as a Soil Improvement Technique for Collapsible Soil, Journal
of Ground Improvement, 9(4), 2005, 137–147.
[4] Ayadat, T., Hanna, A. and Etezad, M., Failure Process of Stone Columns in Collapsible Soils, International Journal of
Engineering (IJE) 21(2), 2008, 135-142.
[5] J.H. Schmertmann, Guidelines, Cone Penetration Test - Performance and Design, U.S. Department of Transportation,
Federal Highway Administration, Office of Research and Development, reproduced by “National Technical Information
Service, FHWA-T5-78-209, 1978.
[6] ASTM International, ASTM-D1586–11, West Conshohocken, Pennsylvania, USA, 2011.
[7] J.H. Schmertmann, Shallow Foundations, in R.W. Brown (ed), Practical Foundation Engineering Handbook, 2nd
edition, (McGraw-Hill, 1974).
[8] H.J. Priebe, The Design of Vibro Replacement, Technical paper 12-61E, Publisher: Keller Grundbau GmbH, Technical
Department, Germany, 1995.
[9] ASTM International, ASTM-D119-94, West Conshohocken, Pennsylvania, USA, 1994.
[10] J.B Burland and M.C.Burbidge Settlement of foundations on sand and gravel, Proc. of the Institute of Civil Engineers,
78(1)-Design and Construction, 1985,1325-1381.
[11] A.S. Vesic, Bearing Capacity of Shallow Foundations, in H.F. Winterkom, and H.Y. Fang (Ed), Foundation Engineering
Handbook, 3, (New York: Van Nostrand Reinhold, 1975) 121-145.