This document discusses segmental bridge technology and its evolution over the past 30 years in the United States. Segmental bridges are constructed using repetitive precast concrete elements connected together progressively. The document outlines various segmental bridge construction methods including span-by-span, balanced cantilever, and incremental launch. It also discusses design considerations like post-tensioning arrangements, construction engineering, precasting yard operations, and examples of segmental bridge projects constructed using different methods. The technology continues to evolve with design principles providing economic and durable bridges.
This document provides an overview of the drilled shaft and bored pile installation for the foundations of a new fitness and wellness plaza development project in New Brunswick, NJ. It discusses that Moretrench was contracted to install 77 drilled shafts ranging from 3-6 feet in diameter and averaging 30 feet in depth, as well as 246 18-inch diameter bored piles averaging 20 feet in depth. The document describes the equipment, materials, and procedures used for the installation, including dealing with logistical challenges of existing infrastructure and scheduling issues during construction.
This document discusses bridges in hilly areas and the various challenges associated with their construction. It outlines different types of bridges suitable for hilly regions, including beam bridges, truss bridges, cantilever bridges, arch bridges, tied-arch bridges, suspension bridges, and cable-stayed bridges. For each bridge type, it provides a brief definition and example image. It also discusses challenges like foundation construction, substructure, superstructure, plant and materials management, and financing.
ABC in Nebraska: Belden to Laurel BridgeJill Reeves
This document summarizes the replacement of the Belden-Laurel Bridge in Nebraska using accelerated bridge construction (ABC) techniques. The old 3-span steel girder bridge from 1938 was deteriorating and in need of replacement. The new single-span bridge features precast concrete girders, deck panels, abutment caps, wing walls, and approach slabs that were assembled on site to replace the bridge over a weekend, minimizing road closure time. The precast elements were connected using self-consolidating concrete, ultra-high performance concrete, and high-early strength concrete to accelerate construction.
This document discusses accelerating bridge construction through modular and self-propelled modular transporter (SPMT) methods. It provides examples of contractor-driven and owner-driven accelerated bridge construction projects. Contractor-driven projects tend to be completed on time and under budget. Owner-driven projects aim to advance technologies and are often the first to use new methods, resulting in higher costs. The document outlines the benefits of accelerated bridge construction including reduced construction time, improved safety, and lower traffic impacts.
Washinton State University/Manchester Fuel Depot Senior ProjectWSUME_2013_A-TEAM
This document summarizes a project to renovate the support system for fuel pipelines at the Manchester Fuel Depot. The current nylon support system is failing with buckling pads, corrosion, and possible leaks. The proposed renovation would reduce the number of support monuments, use the existing monuments cut down to a lower height, and install a proven welded T-shoe support system. Analysis showed the modified monuments and new support system would meet safety factors and withstand stresses. The construction process is designed to take 37 days at an estimated cost under $179,000. In summary, the project aims to provide a 30+ year lifespan with reduced maintenance through replacing the failing support in a short timeline and at a lower
This document discusses the process of selecting bridge types and provides an overview of common bridge types. It describes evaluating potential bridge types based on engineering constraints, costs, environmental and stakeholder impacts. Key bridge types are then summarized, including girder, segmental concrete, truss, arch, cable-stayed, suspension and movable bridges. Their structural properties, construction methods, advantages and challenges are outlined.
Airport Boulevard Railroad Grade Separation Project presented August 20, 2015, at the ASCE OC Branch Meeting, by John Ashlock, PE from County of Riverside Transportation.
This document provides an overview of the drilled shaft and bored pile installation for the foundations of a new fitness and wellness plaza development project in New Brunswick, NJ. It discusses that Moretrench was contracted to install 77 drilled shafts ranging from 3-6 feet in diameter and averaging 30 feet in depth, as well as 246 18-inch diameter bored piles averaging 20 feet in depth. The document describes the equipment, materials, and procedures used for the installation, including dealing with logistical challenges of existing infrastructure and scheduling issues during construction.
This document discusses bridges in hilly areas and the various challenges associated with their construction. It outlines different types of bridges suitable for hilly regions, including beam bridges, truss bridges, cantilever bridges, arch bridges, tied-arch bridges, suspension bridges, and cable-stayed bridges. For each bridge type, it provides a brief definition and example image. It also discusses challenges like foundation construction, substructure, superstructure, plant and materials management, and financing.
ABC in Nebraska: Belden to Laurel BridgeJill Reeves
This document summarizes the replacement of the Belden-Laurel Bridge in Nebraska using accelerated bridge construction (ABC) techniques. The old 3-span steel girder bridge from 1938 was deteriorating and in need of replacement. The new single-span bridge features precast concrete girders, deck panels, abutment caps, wing walls, and approach slabs that were assembled on site to replace the bridge over a weekend, minimizing road closure time. The precast elements were connected using self-consolidating concrete, ultra-high performance concrete, and high-early strength concrete to accelerate construction.
This document discusses accelerating bridge construction through modular and self-propelled modular transporter (SPMT) methods. It provides examples of contractor-driven and owner-driven accelerated bridge construction projects. Contractor-driven projects tend to be completed on time and under budget. Owner-driven projects aim to advance technologies and are often the first to use new methods, resulting in higher costs. The document outlines the benefits of accelerated bridge construction including reduced construction time, improved safety, and lower traffic impacts.
Washinton State University/Manchester Fuel Depot Senior ProjectWSUME_2013_A-TEAM
This document summarizes a project to renovate the support system for fuel pipelines at the Manchester Fuel Depot. The current nylon support system is failing with buckling pads, corrosion, and possible leaks. The proposed renovation would reduce the number of support monuments, use the existing monuments cut down to a lower height, and install a proven welded T-shoe support system. Analysis showed the modified monuments and new support system would meet safety factors and withstand stresses. The construction process is designed to take 37 days at an estimated cost under $179,000. In summary, the project aims to provide a 30+ year lifespan with reduced maintenance through replacing the failing support in a short timeline and at a lower
This document discusses the process of selecting bridge types and provides an overview of common bridge types. It describes evaluating potential bridge types based on engineering constraints, costs, environmental and stakeholder impacts. Key bridge types are then summarized, including girder, segmental concrete, truss, arch, cable-stayed, suspension and movable bridges. Their structural properties, construction methods, advantages and challenges are outlined.
Airport Boulevard Railroad Grade Separation Project presented August 20, 2015, at the ASCE OC Branch Meeting, by John Ashlock, PE from County of Riverside Transportation.
The document discusses several infrastructure projects in the UK involving bridge and retaining wall design. It provides details on the structural elements designed, software used, design codes followed, and roles and responsibilities on each project. The projects included bridge assessments, refurbishments, and new designs incorporating concrete, steel, timber and prestressed structures. Design activities involved load calculations, 3D modeling, temporary works planning and site supervision.
The document summarizes the design of a 483-foot arch rail bridge crossing the Genesee River Gorge in New York. Key details include:
- The bridge will use a tieback-cantilever construction method with a 2-hinged spandrel-braced arch design.
- Tiebacks will be used to support the structure during construction before the arch halves meet in the middle.
- Various design challenges around clearances between the tiebacks and bridge piers were addressed through modifications.
- A staged construction sequence is proposed to erect the arch through the cantilever method without using falsework.
SynTerra / US Bridge Presentation (10 24 11)dgonano
The document discusses the advantages of using pre-fabricated truss bridges for two bridge replacement projects in South Carolina. It notes that pre-fabricated truss bridges have a shallower structure depth, require less construction activity within railroad rights-of-way, and provide significant cost savings compared to traditional bridge options. The document provides details on the design, fabrication, and construction process for the pre-fabricated truss bridges.
The document discusses the balanced cantilever method of bridge construction. It begins by explaining that this method is used for bridges with spans between 50-250m, and involves attaching precast or cast-in-place segments in an alternating manner from each end of cantilevers supported by piers. This method is well-suited for irregular spans, congested sites, and environmentally sensitive areas. It also discusses advantages like determinacy and reduced cracking risks. The document then goes into detail about construction sequences, member proportioning, superstructure types, and analysis of a specific balanced cantilever bridge in Kochi, India.
well foundation of six lane new ganga bridge near kacchi dargah in district P...Arman Hashmi
WELL FOUNDATION PPT, well foundation of six lane new ganga bridge near kacchi dargah in district Patna on NH-30 to near Bidupur in vishali district on NH-103 from bihar state road developement corporation limited
The document discusses stress ribbon bridges, which are a type of suspension bridge where cables are embedded in the deck below the walking surface. Stress ribbon bridges follow a catenary profile and transmit loads via tension in the sagging deck to anchored abutments. The document outlines the history, form, construction techniques, applications, advantages, and recent advances of stress ribbon bridges. Stress ribbon bridges are economically efficient, aesthetically pleasing, require minimal maintenance, and can be erected without falsework.
Pre-Fabricated Steel Bridges for Accelerated Bridge Construction (ABC)AISC/NSBA
This document discusses the use of prefabricated steel bridges and bridge elements for accelerated bridge construction. Over 800 bridges have used prefabricated bridge elements or systems in the last 3 years, with prefabricated steel bridge systems being most common historically. Examples of completed projects using prefabricated steel bridges, modules, and elements are presented, demonstrating how steel allows for faster construction times, reuse of existing foundations, and accommodation of complex geometries. The benefits of modular steel elements for accelerated bridge construction are outlined, including conventional fabrication, light weight, maximum span lengths, and prefabrication advantages.
This document discusses structural design considerations for bridges and culverts. It covers types of bridges selected based on span length and economics. It also discusses loads on bridges including dead load, live load, impact load, wind load, and other factors. The document provides details on solid slab bridges, girder bridges, and truss bridges. It also covers design of box culverts.
The document provides details about three case studies involving cast-in-place concrete construction:
The first case study describes the construction of a bridge over the Iowa River using launching methods to avoid environmental impacts. Segments were precast and then launched into place from behind an abutment.
The second case study discusses the Stoney Trail Bridge in Calgary, the second incrementally launched concrete bridge built in North America. Its 19 segments were cast on one bank and then jacked horizontally into position atop 30m high piers.
The third case study gives structural details of a bridge with a 102m main span constructed using curved, post-tensioned segmental concrete placed by lifting and sliding segments with hydraulic jacks
This document discusses the design of the Punjab Kesari Headquarters building in Delhi, India. Key points include:
- The building fuses traditional Indian architecture with a contemporary office design, using an animated facade and central atrium to optimize natural light and ventilation.
- Sustainability is a core focus, with the atrium and facade design reducing heat gain and reliance on artificial lighting.
- Digital simulations were used during design to achieve adequate natural light levels throughout the building without mechanical lighting.
- Additional simulations explored using the atrium and inlet/outlet placements to improve natural ventilation and thermal comfort on hot days.
Segmental bridge construction involves building bridges out of precast concrete segments. This allows for longer spans than traditional methods by reducing the need for intermediate piers. There are several techniques for segmental bridge construction including cast-in-place using form travelers, incremental launching where segments are cast and then pushed out over supports, and precast segment erection using launching girders. Segmental construction enables building bridges more quickly and over existing infrastructure with minimal traffic disruptions.
I analyze Anoushiravan Ghamsari in two steps: first his place in architecture and next his accomplishments in combining architecture and civil engineering. I think they are both consistent with each other, despite that I’ve always known him for his place as a architect and an outstanding teacher and has been effective in its academic performance at saint Petersburg and his unique style. Anoushirvan has his own place and his fruits of labor are many and each has an important place in our community’s architecture.
This document summarizes a seminar presentation on stress ribbon bridges. It defines a stress ribbon bridge as a tension structure similar to a simple suspension bridge, where the suspension cables are embedded in the deck which follows a catenary arc between supports. This provides stiffness to prevent excessive swaying. Such bridges use pre-tensioned concrete reinforced by steel cables. The document outlines the history and theory behind stress ribbon bridges, describes their construction process, and provides examples of existing stress ribbon bridges along with their advantages and disadvantages.
This document provides an overview of precast prestressed hollowcore slabs. It discusses the benefits of hollowcore slabs such as longer clear spans, faster construction time, and improved structural performance from reduced weight. Hollowcore slabs come in various depths from 8 to 14 inches to match loading and span requirements. Examples are given of projects in British Columbia that used hollowcore slabs, including many Real Canadian Superstore locations, the Richmond Speed Skating Oval, and the Uptown Mall in Victoria. The document concludes with a discussion of different structural systems that can be used with hollowcore slabs, such as cast-in-place slabs, steel frames, and precast frames.
A concise presentation on bridge construction. Related to civil engineering courses. can be helpful for undergraduate students.
Its a Part of my class presentation.
This document provides information on coffer dams and caissons. It discusses different types of coffer dams such as braced, earth-type, double-walled sheet pile, and cellular coffer dams. It also discusses environmentally friendly portable coffer dams. A case study on coffer dam construction for the Taunsa Barrage Rehabilitation Project in Pakistan is presented. Caissons are described as prefabricated foundations sunk into the ground to form foundations. Different types of caissons including box, open, pneumatic, and monolith caissons are discussed. Construction methods and examples of caisson usage are also summarized.
Assessing and constructing a cost effective bridge replacement christopher si...mecocca5
Precast components are fabricated in a controlled plant environment allowing for increased quality control. Other benefits include expedited installation minimizing field construction time and associated costs as well as minimal environmental impacts from construction activities.
Metode Konstruksi Offshore Platform_2016_2_18.pptMFaridGeonova
This document discusses the construction of fixed offshore platforms using steel tubular structures. It describes the key phases of fabrication and installation including fabrication of small structural units, jacket structure fabrication, jacket erection, deck fabrication, and lifting and installation of the deck and jacket. Steel tubular joints are welded together during fabrication. The jacket and deck are assembled onshore then transported offshore for installation by lifting with crane vessels. Piles are driven into the seabed to secure the jacket structure.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
The document discusses several infrastructure projects in the UK involving bridge and retaining wall design. It provides details on the structural elements designed, software used, design codes followed, and roles and responsibilities on each project. The projects included bridge assessments, refurbishments, and new designs incorporating concrete, steel, timber and prestressed structures. Design activities involved load calculations, 3D modeling, temporary works planning and site supervision.
The document summarizes the design of a 483-foot arch rail bridge crossing the Genesee River Gorge in New York. Key details include:
- The bridge will use a tieback-cantilever construction method with a 2-hinged spandrel-braced arch design.
- Tiebacks will be used to support the structure during construction before the arch halves meet in the middle.
- Various design challenges around clearances between the tiebacks and bridge piers were addressed through modifications.
- A staged construction sequence is proposed to erect the arch through the cantilever method without using falsework.
SynTerra / US Bridge Presentation (10 24 11)dgonano
The document discusses the advantages of using pre-fabricated truss bridges for two bridge replacement projects in South Carolina. It notes that pre-fabricated truss bridges have a shallower structure depth, require less construction activity within railroad rights-of-way, and provide significant cost savings compared to traditional bridge options. The document provides details on the design, fabrication, and construction process for the pre-fabricated truss bridges.
The document discusses the balanced cantilever method of bridge construction. It begins by explaining that this method is used for bridges with spans between 50-250m, and involves attaching precast or cast-in-place segments in an alternating manner from each end of cantilevers supported by piers. This method is well-suited for irregular spans, congested sites, and environmentally sensitive areas. It also discusses advantages like determinacy and reduced cracking risks. The document then goes into detail about construction sequences, member proportioning, superstructure types, and analysis of a specific balanced cantilever bridge in Kochi, India.
well foundation of six lane new ganga bridge near kacchi dargah in district P...Arman Hashmi
WELL FOUNDATION PPT, well foundation of six lane new ganga bridge near kacchi dargah in district Patna on NH-30 to near Bidupur in vishali district on NH-103 from bihar state road developement corporation limited
The document discusses stress ribbon bridges, which are a type of suspension bridge where cables are embedded in the deck below the walking surface. Stress ribbon bridges follow a catenary profile and transmit loads via tension in the sagging deck to anchored abutments. The document outlines the history, form, construction techniques, applications, advantages, and recent advances of stress ribbon bridges. Stress ribbon bridges are economically efficient, aesthetically pleasing, require minimal maintenance, and can be erected without falsework.
Pre-Fabricated Steel Bridges for Accelerated Bridge Construction (ABC)AISC/NSBA
This document discusses the use of prefabricated steel bridges and bridge elements for accelerated bridge construction. Over 800 bridges have used prefabricated bridge elements or systems in the last 3 years, with prefabricated steel bridge systems being most common historically. Examples of completed projects using prefabricated steel bridges, modules, and elements are presented, demonstrating how steel allows for faster construction times, reuse of existing foundations, and accommodation of complex geometries. The benefits of modular steel elements for accelerated bridge construction are outlined, including conventional fabrication, light weight, maximum span lengths, and prefabrication advantages.
This document discusses structural design considerations for bridges and culverts. It covers types of bridges selected based on span length and economics. It also discusses loads on bridges including dead load, live load, impact load, wind load, and other factors. The document provides details on solid slab bridges, girder bridges, and truss bridges. It also covers design of box culverts.
The document provides details about three case studies involving cast-in-place concrete construction:
The first case study describes the construction of a bridge over the Iowa River using launching methods to avoid environmental impacts. Segments were precast and then launched into place from behind an abutment.
The second case study discusses the Stoney Trail Bridge in Calgary, the second incrementally launched concrete bridge built in North America. Its 19 segments were cast on one bank and then jacked horizontally into position atop 30m high piers.
The third case study gives structural details of a bridge with a 102m main span constructed using curved, post-tensioned segmental concrete placed by lifting and sliding segments with hydraulic jacks
This document discusses the design of the Punjab Kesari Headquarters building in Delhi, India. Key points include:
- The building fuses traditional Indian architecture with a contemporary office design, using an animated facade and central atrium to optimize natural light and ventilation.
- Sustainability is a core focus, with the atrium and facade design reducing heat gain and reliance on artificial lighting.
- Digital simulations were used during design to achieve adequate natural light levels throughout the building without mechanical lighting.
- Additional simulations explored using the atrium and inlet/outlet placements to improve natural ventilation and thermal comfort on hot days.
Segmental bridge construction involves building bridges out of precast concrete segments. This allows for longer spans than traditional methods by reducing the need for intermediate piers. There are several techniques for segmental bridge construction including cast-in-place using form travelers, incremental launching where segments are cast and then pushed out over supports, and precast segment erection using launching girders. Segmental construction enables building bridges more quickly and over existing infrastructure with minimal traffic disruptions.
I analyze Anoushiravan Ghamsari in two steps: first his place in architecture and next his accomplishments in combining architecture and civil engineering. I think they are both consistent with each other, despite that I’ve always known him for his place as a architect and an outstanding teacher and has been effective in its academic performance at saint Petersburg and his unique style. Anoushirvan has his own place and his fruits of labor are many and each has an important place in our community’s architecture.
This document summarizes a seminar presentation on stress ribbon bridges. It defines a stress ribbon bridge as a tension structure similar to a simple suspension bridge, where the suspension cables are embedded in the deck which follows a catenary arc between supports. This provides stiffness to prevent excessive swaying. Such bridges use pre-tensioned concrete reinforced by steel cables. The document outlines the history and theory behind stress ribbon bridges, describes their construction process, and provides examples of existing stress ribbon bridges along with their advantages and disadvantages.
This document provides an overview of precast prestressed hollowcore slabs. It discusses the benefits of hollowcore slabs such as longer clear spans, faster construction time, and improved structural performance from reduced weight. Hollowcore slabs come in various depths from 8 to 14 inches to match loading and span requirements. Examples are given of projects in British Columbia that used hollowcore slabs, including many Real Canadian Superstore locations, the Richmond Speed Skating Oval, and the Uptown Mall in Victoria. The document concludes with a discussion of different structural systems that can be used with hollowcore slabs, such as cast-in-place slabs, steel frames, and precast frames.
A concise presentation on bridge construction. Related to civil engineering courses. can be helpful for undergraduate students.
Its a Part of my class presentation.
This document provides information on coffer dams and caissons. It discusses different types of coffer dams such as braced, earth-type, double-walled sheet pile, and cellular coffer dams. It also discusses environmentally friendly portable coffer dams. A case study on coffer dam construction for the Taunsa Barrage Rehabilitation Project in Pakistan is presented. Caissons are described as prefabricated foundations sunk into the ground to form foundations. Different types of caissons including box, open, pneumatic, and monolith caissons are discussed. Construction methods and examples of caisson usage are also summarized.
Assessing and constructing a cost effective bridge replacement christopher si...mecocca5
Precast components are fabricated in a controlled plant environment allowing for increased quality control. Other benefits include expedited installation minimizing field construction time and associated costs as well as minimal environmental impacts from construction activities.
Metode Konstruksi Offshore Platform_2016_2_18.pptMFaridGeonova
This document discusses the construction of fixed offshore platforms using steel tubular structures. It describes the key phases of fabrication and installation including fabrication of small structural units, jacket structure fabrication, jacket erection, deck fabrication, and lifting and installation of the deck and jacket. Steel tubular joints are welded together during fabrication. The jacket and deck are assembled onshore then transported offshore for installation by lifting with crane vessels. Piles are driven into the seabed to secure the jacket structure.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Low power architecture of logic gates using adiabatic techniquesnooriasukmaningtyas
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Literature Review Basics and Understanding Reference Management.pptx
Rohleder_presentation.pdf
1. Segmental Bridge Technology –
Established and Evolving
W. Jay Rohleder, Jr, P.E., S.E.
Senior Vice President / Project Development
FIGG
1
2. Segmental Bridge Topics Addressed
• Definition of concrete segmental bridge construction
methods and related design considerations.
• The evolution of concrete segmental bridge
technology over the past 30 years in the U.S.
• Design principles and practices that provide the
economic and durability value for this structure type.
• Continuing evolution of the segmental bridge
construction technology and related design
concepts.
2
3. Definition of Segmental Bridges
Bridges, that are typically concrete box
structure types, constructed using
repetitive elements that are
progressively connected together to
form a completed structure.
Construction Load Cases are
particularly critical considerations in
developing the design and building
methods for segmental bridges.
3
4. CABLE STAYED BRIDGES
CABLE STAYED BRIDGES
LONG SPAN BRIDGES
LONG SPAN BRIDGES ENVIRONMENTALLY SENSITIVE
ENVIRONMENTALLY SENSITIVE
LONG BRIDGES OVER WATER
LONG BRIDGES OVER WATER ARCHES
ARCHES
URBAN BRIDGES
URBAN BRIDGES
SEGMENTAL BRIDGE APPLICATIONS
RAIL BRIDGES
RAIL BRIDGES
4
6. Segmental Construction Methods
• SPAN-by-SPAN (Precast)
• CANTILEVER (Precast or Cast-in-Place)
> Balanced
> Uni-Directional
• INCREMENTAL LAUNCH
(Typically an Inefficient use of materials,
so Not commonly used –
need tangent or constant curvature)
6
60. West End
Calver
Island
East End
Casting Yard
New WB
New EB
Existing
Bridge
Twin Bridges with each:
• 5,910’ Long by 57’ Wide
• 40 Spans – 35 @ 150’, 5 @ 132’
• 21 River Piers
• 18 Land Piers
Susquehanna River Bridge, PA
60
83. BALANCED CANTILEVER EXAMPLE
September 2007
Victory Bridge, NJ
• Twin 3,971’ Long Bridges
• Main Span Unit 330’, 440’, 330’
• 100’ Tall Precast Piers
• SxS Appr., B.C. Main Span Unit
83
121. Segmental Cable-Stay Bridges
I-280 Veterans’ Glass City Skyway, Ohio
1,225’ main span (2 @ 612’-6”)
Penobscot Narrows Bridge
& Observatory, Maine (1,161’ main span)
Open Dec. 2006
Open June 2007
121
122. Veterans’ Glass City Skyway
Precast Superstructure
Completed in 8 Months
New Penobscot Narrows Bridge
Cast-in-Place Superstructure
Completed in 15 Months
122
130. Main Span Precast Segmental Construction
• Backspans: Span-by Span
• Mainspan: One-Directional Cantilever
Veteran’s Glass City Skyway, OH
130
131. • 3 pairs of segments
erected in cantilever
– Epoxied segment joints
– Segments post-tensioned
Veteran’s Glass City Skyway, OH
131
132. Segmental Bridge Construction Benefits
• Rapid Construction
• Segments Delivered over Completed Spans
– No Need for Barge Delivery
• Maintained Shipping Lanes at All Times
– Access to Port of Toledo
Veteran’s Glass City Skyway, OH
132
133. Review Questions
• Define a segmental concrete bridge structure type?
• List 3 methods for constructing segmental bridges?
• List benefits during construction that result from
using a segmental bridge construction technique?
• List permanent bridge site layout benefits resulting
from using a segmental box girder bridge type?
• What structural benefits apply to using a closed cell
box girder for a segmental bridge?
• What segmental bridge technological advances offer
the most immediate benefits?
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134. Open-ended Assignment Questions
Can you identify a viable candidate location
for a segmental bridge given your
understanding of the potential benefits from
using this structure type?
What new innovative applications of the
segmental bridge construction technique
can you envision?
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