The document summarizes a project that used large pre-cast concrete ARES modular panel retaining walls to provide stability and aesthetics for a key roadway in Calgary, Alberta, Canada called Southeast Stoney Trail. Twenty-two ARES walls totaling over 12,000 square meters were used in 12 structures along the 25 kilometer, six-lane roadway project. The ARES wall system was recommended due to its affordability, simplicity, speed of construction, ability to accommodate finishes, and eliminate concerns over corrosion from de-icing salts through its HDPE geogrid. The walls were easily installed and helped ensure the large infrastructure project was completed on schedule and within budget.
The Wyoming Department of Transportation used TriAx Geogrid on the West Lincolnway. Using Tensar's TriAx Georgrid reduced overexcavation, removal costs, materials requirements and significantly improved safety for the general public.
This document provides resources for designing roads and pavements using the GEOWEB load support system. It includes an overview of how the system works, comparisons to other systems, specification tools, CAD drawings, videos, technical evaluations, and information on applications across different markets and industries. The goal is to equip engineers with all the tools and resources needed to design higher-performing roads and pavements.
The Wacker Drive Viaduct Reconstruction project in Chicago involved rebuilding Wacker Drive using post-tensioning techniques. The project reconstructed both the upper and lower levels of Wacker Drive to improve safety, update infrastructure, and enhance pedestrian access. Post-tensioning allowed the project team to accommodate heavy loads, unbalanced spans, and geometric constraints while reusing existing foundations and increasing vertical clearance. The reconstructed Wacker Drive incorporated modernized intersections and streetscapes when it reopened in 2012.
The document describes the tensile structure roof at Denver International Airport. Some key details:
- The roof covers 375,000 square feet and is supported by 34 steel masts up to 45 meters high.
- It uses a catenary cable system similar to the Brooklyn Bridge, with over 10 miles of steel cable and 3.8 miles of aluminum clamping.
- The roof material is a double layer of PTFE fiberglass that is translucent, letting in natural light while reflecting solar heat gain.
What is Mesa Segmental Retaining Wall System?Nilex Inc
The Mesa Segmental Retaining Wall System offered by Nilex is a combination of aesthetics, versatility, and economy of segmental concrete blocks that have a unique, positive mechanical connection between the geogrid reinforcement and masonry block facing unit. This kind of connection results in a highly durable, high structural integrity, and simplified construction. Mesa systems work well for both structural and landscape retaining walls with concrete blocks and are particularly beneficial for projects that involve heavy loading conditions, high traffic, and seismic activities.
Visit - https://nilex.com/retaining-walls
Ricky H Dover Jr is a seasoned heavy equipment operator with over 9 years of experience in the metals and loading industry. He has excellent skills operating cranes and front end loaders. His experience includes working as a Loader Operator for Santek Environmental & Waste Services from 2016 to 2017, a Crane Operator for Schnitzer Steel from 2015 to 2015, and a Heavy Equipment Operator for PSC Metals INC from 2007 to 2014. Dover graduated from Marion County High School in 2003.
Armoured Ford / Armoured Ford / Low Water Stream Crossing
An alternative to constructing a bridge. Historically used since the beginning of mankind to cross a waterway. Bridges allow passage at all heights of water flows, but the cost and environmental impact of bridges with their abutments and approach causeways can be detrimental, liable to damage, loss of usage for a long period, expensive to build, expensive to maintain, expensive to replace as they come to the end of their service life and do not able to be upgraded to handle wider or heavier traffic.
Benefits: a) short construction time b) much lower cost than a bridge
Description: During normal stream low flows the water crossing is passable to vehicles and pedestrians. At periodic high flows vehicle passage is halted until water level drops(ie after a storm event).
Endurance: The lack of stream restriction (such as bridge abutments and built up approaches) allows the high flows to pass without costly damage to the crossing structure such as bridge failure. High-water flows that carry debris such as trees that get hung up on bridges due to lack of height clearance are not impeded with the use of an armoured ford.
Higher water volume streams: A modified armoured ford can handle larger normal water flows by the installation of one or a number of pipes underneath the armoured ford.
Durability: The usage of geotextile underlayment and articulated concrete block allow for differential movements that cause premature destruction and failure of poured concrete or cemented ford structures.
Modifiable: In the event that road usage changes such as wider vehicles or heavier loads or upgrading from one lane to two lanes is desired, the present armoured ford is able to be cheaply and quickly added to or re-built to accommodate.
Longetivety: Armoured fords built by the Romans 2,000 yrs ago are still in user today.
Environmental: A very low environmental impact compared to excavation and construction of abutments and building up of bridge approach causeways.
The document summarizes a project that used large pre-cast concrete ARES modular panel retaining walls to provide stability and aesthetics for a key roadway in Calgary, Alberta, Canada called Southeast Stoney Trail. Twenty-two ARES walls totaling over 12,000 square meters were used in 12 structures along the 25 kilometer, six-lane roadway project. The ARES wall system was recommended due to its affordability, simplicity, speed of construction, ability to accommodate finishes, and eliminate concerns over corrosion from de-icing salts through its HDPE geogrid. The walls were easily installed and helped ensure the large infrastructure project was completed on schedule and within budget.
The Wyoming Department of Transportation used TriAx Geogrid on the West Lincolnway. Using Tensar's TriAx Georgrid reduced overexcavation, removal costs, materials requirements and significantly improved safety for the general public.
This document provides resources for designing roads and pavements using the GEOWEB load support system. It includes an overview of how the system works, comparisons to other systems, specification tools, CAD drawings, videos, technical evaluations, and information on applications across different markets and industries. The goal is to equip engineers with all the tools and resources needed to design higher-performing roads and pavements.
The Wacker Drive Viaduct Reconstruction project in Chicago involved rebuilding Wacker Drive using post-tensioning techniques. The project reconstructed both the upper and lower levels of Wacker Drive to improve safety, update infrastructure, and enhance pedestrian access. Post-tensioning allowed the project team to accommodate heavy loads, unbalanced spans, and geometric constraints while reusing existing foundations and increasing vertical clearance. The reconstructed Wacker Drive incorporated modernized intersections and streetscapes when it reopened in 2012.
The document describes the tensile structure roof at Denver International Airport. Some key details:
- The roof covers 375,000 square feet and is supported by 34 steel masts up to 45 meters high.
- It uses a catenary cable system similar to the Brooklyn Bridge, with over 10 miles of steel cable and 3.8 miles of aluminum clamping.
- The roof material is a double layer of PTFE fiberglass that is translucent, letting in natural light while reflecting solar heat gain.
What is Mesa Segmental Retaining Wall System?Nilex Inc
The Mesa Segmental Retaining Wall System offered by Nilex is a combination of aesthetics, versatility, and economy of segmental concrete blocks that have a unique, positive mechanical connection between the geogrid reinforcement and masonry block facing unit. This kind of connection results in a highly durable, high structural integrity, and simplified construction. Mesa systems work well for both structural and landscape retaining walls with concrete blocks and are particularly beneficial for projects that involve heavy loading conditions, high traffic, and seismic activities.
Visit - https://nilex.com/retaining-walls
Ricky H Dover Jr is a seasoned heavy equipment operator with over 9 years of experience in the metals and loading industry. He has excellent skills operating cranes and front end loaders. His experience includes working as a Loader Operator for Santek Environmental & Waste Services from 2016 to 2017, a Crane Operator for Schnitzer Steel from 2015 to 2015, and a Heavy Equipment Operator for PSC Metals INC from 2007 to 2014. Dover graduated from Marion County High School in 2003.
Armoured Ford / Armoured Ford / Low Water Stream Crossing
An alternative to constructing a bridge. Historically used since the beginning of mankind to cross a waterway. Bridges allow passage at all heights of water flows, but the cost and environmental impact of bridges with their abutments and approach causeways can be detrimental, liable to damage, loss of usage for a long period, expensive to build, expensive to maintain, expensive to replace as they come to the end of their service life and do not able to be upgraded to handle wider or heavier traffic.
Benefits: a) short construction time b) much lower cost than a bridge
Description: During normal stream low flows the water crossing is passable to vehicles and pedestrians. At periodic high flows vehicle passage is halted until water level drops(ie after a storm event).
Endurance: The lack of stream restriction (such as bridge abutments and built up approaches) allows the high flows to pass without costly damage to the crossing structure such as bridge failure. High-water flows that carry debris such as trees that get hung up on bridges due to lack of height clearance are not impeded with the use of an armoured ford.
Higher water volume streams: A modified armoured ford can handle larger normal water flows by the installation of one or a number of pipes underneath the armoured ford.
Durability: The usage of geotextile underlayment and articulated concrete block allow for differential movements that cause premature destruction and failure of poured concrete or cemented ford structures.
Modifiable: In the event that road usage changes such as wider vehicles or heavier loads or upgrading from one lane to two lanes is desired, the present armoured ford is able to be cheaply and quickly added to or re-built to accommodate.
Longetivety: Armoured fords built by the Romans 2,000 yrs ago are still in user today.
Environmental: A very low environmental impact compared to excavation and construction of abutments and building up of bridge approach causeways.
Post-Tensioning Case Study - Repair, Rehabilitation, and Strengthening
2013 Award of Merit: Reinforcement of Driscoll Bridge
Location: Over Raritan River, Keasbey, NJ
Submitted by: DYWIDAG Systems International USA, Inc. (DSI)
Owner: New Jersey Highway Authority, NJ, USA
Architect(s):
Engineer(s): URS-Greiner JV, and the DSI engineering staff
Contractor: Conti Enterprises, South Plainfield, NJ, USA
PT Supplier: DYWIDAG Systems International USA, Inc. (DSI)
I am a senior structural designer with over 17 years experience working in the building (residential and commercial), construction and mining industry and I have strong foundation in structural engineering. I am proficient in AutoCAD, Microstation Aecosim, REVIT, Concrete and Steel Structures, and producing professional drawings.
This document provides a personal statement and employment history for Lee Nolan, including contact details. It summarizes over 15 years of experience in various rail infrastructure roles. Key skills listed include safety qualifications and experience operating plant and machinery. Recent employment has been as a supervisor for Network Rail and Balfour Beatty, undertaking civil development work and infrastructure renewals using track plant. Previous roles include track worker, team leader, and leading trackman for various rail contractors.
Vidalta Bridge is a post-tensioned concrete and steel composite structure located in Mexico City, Mexico. The bridge features a 161 meter long steel main span supported by parallel strand cable stays, and a 78 meter long post-tensioned concrete compensation back assembly. The bridge was designed to maximize the use of post-tensioning in its multiple structural elements, resulting in an efficient use of materials.
This document discusses best practices for flexible pavement widening projects. Widening projects are undertaken to improve safety by reducing edge failures, provide greater traffic separation, and enhance pavement performance by addressing issues like rutting and drainage problems at the edges. Construction challenges include narrow work areas, variable subgrade support, drainage issues, and limitations on equipment. Failures can occur due to differences in the old and new pavement structures, improper joint construction, insufficient compaction and settlement, moisture penetration issues, and drainage or slope stability problems. The document proposes a webinar to gather input from transportation agencies, contractors, and equipment manufacturers on successful and unsuccessful pavement widening projects to identify good practices and standards.
Post-Tensioning Case Study - Repair, Rehabilitation, and Strengthening
2013 Award of Merit: Rehabilitation of a Parking Garage in Downtown Milwaukee, W
Location: Milwaukee, WI
Submitted by: Wiss, Janney, Elstner Associates, Inc.
Owner: Northwestern Mutual
Engineer(s): Wiss, Janney, Elstner Associates, Inc.
Contractor: General Contractor- Structurewerks; PT Subcontractor- STRUCTURAL
PT Supplier: VSL
The I-64 Kanawha River Bridge is a 2,975 foot long, post-tensioned concrete box girder bridge in Kanawha County, West Virginia that carries I-64 eastbound traffic. It has a record-setting main span of 760 feet. The bridge was completed ahead of schedule and opened in 2010. The post-tensioned concrete design was chosen over steel alternatives due to being over $30 million cheaper in bids.
The Veterans' Glass City Skyway bridge in Toledo, OH opened in 2007. It features a unique 440 foot tall glass-faced pylon and innovative stay cradle technology. The 1525 foot long main span uses a single pylon and stay cradle system to support larger stay spacing and a more open deck. The bridge improved safety and reduced congestion by replacing an older bascule bridge and accommodating over 68,000 vehicles per day.
This document summarizes different methods for paving and repairing surfaces from Chapter 8 of the textbook "Construction Methods and Management". It describes the basic types of concrete and asphalt pavements as well as surface treatment techniques. Specific equipment and processes are outlined for tasks like asphalt paving, applying seal coats, and recycling existing pavement materials. Diagrams and pictures illustrate the machinery used.
The Ohio DOT specifies longitudinal diamond grooving (which helps reduce hydroplaning, increases drainage at the tire/pavement interface and aids in vehicle control) on concrete bridge decks. The superior safety performance encouraged the department to use the technique on several sections of asphalt pavement.
La Autoridad de Tránsito Regional de Nueva Orleans (The New Orleans Regional Transit Authority) aplicó el Spectra® Rail System para reforzar una sección de 14 millas de la línea de tranvía de la histórica St. Charles Avenue.
The document discusses pre-engineered buildings (PEBs) and S M Group of Industries, which provides turnkey industrial projects. It outlines the history and evolution of PEBs from the 1900s to present. It then describes the key features of PEBs, including their customizability, pre-fabricated design, and faster construction. Finally, it outlines S M Group's quality assurance processes to ensure standards compliance and quality control during material procurement, production, and delivery.
This document discusses the production of aggregates, concrete, and asphalt mixes from Chapter 7 of the 8th edition of the textbook "Construction Methods and Management" by S. W. Nunnally. It covers the processes for excavating and crushing rock to produce aggregate, mixing cement, aggregate and water to produce concrete, and heating and mixing asphalt and aggregate to produce asphalt mixes. Various equipment used in these production processes like crushers, screens, mixers and asphalt plants are also depicted.
Kenrick Ramos is a civil/structural engineer from the Philippines with over 9 years of experience in structural design and analysis. He has worked on projects in various industries including oil and gas, petrochemical, and manufacturing. He is proficient in structural design software like STAAD Pro and AutoCAD. Ramos has a bachelor's degree in civil engineering and is a licensed civil engineer in the Philippines.
After viewing this program, you will be able to:
• Identify the difference between precast/pre-stressed concrete and tilt up concrete structures
• Explain the benefits of using tilt up concrete
• Discuss the design considerations for tilt up concrete structures
• BIM into precast / Tilt up concrete
The document describes a family of companies that specialize in infrastructure solutions, including heavy civil construction, demolition, marine construction, bridges, and power generation projects. The companies are the Joseph B. Fay Company, i+iconSOUTHEAST, and i+iconENERGY. They operate across multiple geographies and have completed various infrastructure projects since 1947 involving demolition, earthwork, piling, foundations, roadways, structures and utilities.
Work based project KNE520_John Ghaly visual audio presentationJohn Ghaly , MIEAust
This document summarizes a student's work-based project on pavement recycling and stabilization techniques. It provides an overview of different recycling methods such as cold-in-place recycling with cement and foamed bitumen stabilization. It also discusses the economic and environmental benefits of recycling over conventional pavement rehabilitation. The student conducted an online survey to analyze industry perspectives and concluded that efforts should be made to promote pavement material reuse and whole life cycle cost analysis.
EPACK is one of the leading manufacturer , supplier and turnkey solution provider for innovative and efficient prefab building solutions .The principal activity of the organization comprises of Pre Engineered Buildings, Prefabricated Buildings, Insulated Sandwich Panel Manufacturing, Light Gauge Steel Framing,. Since the inception of EPACK in 1999 at a prime location in Greater Noida EPACK has been the leading manufacturer of Prefabricated structures in India Producing more than 12,000 Tons per annum and covered over 12 million Sq. ft area in prefab structures worldwide.
Workstation cranes can be manufactured to customer specifications for lifting loads up to 4000 lbs. They are available as free standing or ceiling mounted models with bridge spans up to 30 feet. The document provides information on the features and components of MET-TRACK brand workstation cranes, which are designed for ease of movement and reduced operator fatigue. Various configuration and mounting options are described.
This 3-sentence summary provides the key details about the document:
The document is a 2002 research report from Purdue University that studied the design of mechanically stabilized earth (MSE) retaining walls under fully saturated soil conditions. It presents the results of laboratory pullout tests on steel reinforcements embedded in silty sand soils under drained and undrained conditions. The report found that undrained pullout capacity is lower than drained capacity and decreases with higher silt content and lower permeability in the backfill soil.
Post-Tensioning Case Study - Repair, Rehabilitation, and Strengthening
2013 Award of Merit: Reinforcement of Driscoll Bridge
Location: Over Raritan River, Keasbey, NJ
Submitted by: DYWIDAG Systems International USA, Inc. (DSI)
Owner: New Jersey Highway Authority, NJ, USA
Architect(s):
Engineer(s): URS-Greiner JV, and the DSI engineering staff
Contractor: Conti Enterprises, South Plainfield, NJ, USA
PT Supplier: DYWIDAG Systems International USA, Inc. (DSI)
I am a senior structural designer with over 17 years experience working in the building (residential and commercial), construction and mining industry and I have strong foundation in structural engineering. I am proficient in AutoCAD, Microstation Aecosim, REVIT, Concrete and Steel Structures, and producing professional drawings.
This document provides a personal statement and employment history for Lee Nolan, including contact details. It summarizes over 15 years of experience in various rail infrastructure roles. Key skills listed include safety qualifications and experience operating plant and machinery. Recent employment has been as a supervisor for Network Rail and Balfour Beatty, undertaking civil development work and infrastructure renewals using track plant. Previous roles include track worker, team leader, and leading trackman for various rail contractors.
Vidalta Bridge is a post-tensioned concrete and steel composite structure located in Mexico City, Mexico. The bridge features a 161 meter long steel main span supported by parallel strand cable stays, and a 78 meter long post-tensioned concrete compensation back assembly. The bridge was designed to maximize the use of post-tensioning in its multiple structural elements, resulting in an efficient use of materials.
This document discusses best practices for flexible pavement widening projects. Widening projects are undertaken to improve safety by reducing edge failures, provide greater traffic separation, and enhance pavement performance by addressing issues like rutting and drainage problems at the edges. Construction challenges include narrow work areas, variable subgrade support, drainage issues, and limitations on equipment. Failures can occur due to differences in the old and new pavement structures, improper joint construction, insufficient compaction and settlement, moisture penetration issues, and drainage or slope stability problems. The document proposes a webinar to gather input from transportation agencies, contractors, and equipment manufacturers on successful and unsuccessful pavement widening projects to identify good practices and standards.
Post-Tensioning Case Study - Repair, Rehabilitation, and Strengthening
2013 Award of Merit: Rehabilitation of a Parking Garage in Downtown Milwaukee, W
Location: Milwaukee, WI
Submitted by: Wiss, Janney, Elstner Associates, Inc.
Owner: Northwestern Mutual
Engineer(s): Wiss, Janney, Elstner Associates, Inc.
Contractor: General Contractor- Structurewerks; PT Subcontractor- STRUCTURAL
PT Supplier: VSL
The I-64 Kanawha River Bridge is a 2,975 foot long, post-tensioned concrete box girder bridge in Kanawha County, West Virginia that carries I-64 eastbound traffic. It has a record-setting main span of 760 feet. The bridge was completed ahead of schedule and opened in 2010. The post-tensioned concrete design was chosen over steel alternatives due to being over $30 million cheaper in bids.
The Veterans' Glass City Skyway bridge in Toledo, OH opened in 2007. It features a unique 440 foot tall glass-faced pylon and innovative stay cradle technology. The 1525 foot long main span uses a single pylon and stay cradle system to support larger stay spacing and a more open deck. The bridge improved safety and reduced congestion by replacing an older bascule bridge and accommodating over 68,000 vehicles per day.
This document summarizes different methods for paving and repairing surfaces from Chapter 8 of the textbook "Construction Methods and Management". It describes the basic types of concrete and asphalt pavements as well as surface treatment techniques. Specific equipment and processes are outlined for tasks like asphalt paving, applying seal coats, and recycling existing pavement materials. Diagrams and pictures illustrate the machinery used.
The Ohio DOT specifies longitudinal diamond grooving (which helps reduce hydroplaning, increases drainage at the tire/pavement interface and aids in vehicle control) on concrete bridge decks. The superior safety performance encouraged the department to use the technique on several sections of asphalt pavement.
La Autoridad de Tránsito Regional de Nueva Orleans (The New Orleans Regional Transit Authority) aplicó el Spectra® Rail System para reforzar una sección de 14 millas de la línea de tranvía de la histórica St. Charles Avenue.
The document discusses pre-engineered buildings (PEBs) and S M Group of Industries, which provides turnkey industrial projects. It outlines the history and evolution of PEBs from the 1900s to present. It then describes the key features of PEBs, including their customizability, pre-fabricated design, and faster construction. Finally, it outlines S M Group's quality assurance processes to ensure standards compliance and quality control during material procurement, production, and delivery.
This document discusses the production of aggregates, concrete, and asphalt mixes from Chapter 7 of the 8th edition of the textbook "Construction Methods and Management" by S. W. Nunnally. It covers the processes for excavating and crushing rock to produce aggregate, mixing cement, aggregate and water to produce concrete, and heating and mixing asphalt and aggregate to produce asphalt mixes. Various equipment used in these production processes like crushers, screens, mixers and asphalt plants are also depicted.
Kenrick Ramos is a civil/structural engineer from the Philippines with over 9 years of experience in structural design and analysis. He has worked on projects in various industries including oil and gas, petrochemical, and manufacturing. He is proficient in structural design software like STAAD Pro and AutoCAD. Ramos has a bachelor's degree in civil engineering and is a licensed civil engineer in the Philippines.
After viewing this program, you will be able to:
• Identify the difference between precast/pre-stressed concrete and tilt up concrete structures
• Explain the benefits of using tilt up concrete
• Discuss the design considerations for tilt up concrete structures
• BIM into precast / Tilt up concrete
The document describes a family of companies that specialize in infrastructure solutions, including heavy civil construction, demolition, marine construction, bridges, and power generation projects. The companies are the Joseph B. Fay Company, i+iconSOUTHEAST, and i+iconENERGY. They operate across multiple geographies and have completed various infrastructure projects since 1947 involving demolition, earthwork, piling, foundations, roadways, structures and utilities.
Work based project KNE520_John Ghaly visual audio presentationJohn Ghaly , MIEAust
This document summarizes a student's work-based project on pavement recycling and stabilization techniques. It provides an overview of different recycling methods such as cold-in-place recycling with cement and foamed bitumen stabilization. It also discusses the economic and environmental benefits of recycling over conventional pavement rehabilitation. The student conducted an online survey to analyze industry perspectives and concluded that efforts should be made to promote pavement material reuse and whole life cycle cost analysis.
EPACK is one of the leading manufacturer , supplier and turnkey solution provider for innovative and efficient prefab building solutions .The principal activity of the organization comprises of Pre Engineered Buildings, Prefabricated Buildings, Insulated Sandwich Panel Manufacturing, Light Gauge Steel Framing,. Since the inception of EPACK in 1999 at a prime location in Greater Noida EPACK has been the leading manufacturer of Prefabricated structures in India Producing more than 12,000 Tons per annum and covered over 12 million Sq. ft area in prefab structures worldwide.
Workstation cranes can be manufactured to customer specifications for lifting loads up to 4000 lbs. They are available as free standing or ceiling mounted models with bridge spans up to 30 feet. The document provides information on the features and components of MET-TRACK brand workstation cranes, which are designed for ease of movement and reduced operator fatigue. Various configuration and mounting options are described.
This 3-sentence summary provides the key details about the document:
The document is a 2002 research report from Purdue University that studied the design of mechanically stabilized earth (MSE) retaining walls under fully saturated soil conditions. It presents the results of laboratory pullout tests on steel reinforcements embedded in silty sand soils under drained and undrained conditions. The report found that undrained pullout capacity is lower than drained capacity and decreases with higher silt content and lower permeability in the backfill soil.
This document provides guidance for the design and construction of mechanically stabilized earth (MSE) walls and reinforced soil slopes. It summarizes current design practices based on the AASHTO LRFD Bridge Design Specifications and Construction Specifications. The document is intended to support educational programs for transportation agencies and serve as a standard reference for highway projects involving MSE walls and reinforced soil structures. It covers topics such as wall/slope design, construction, specifications, contracting methods, and performance monitoring.
This document summarizes the rehabilitation of a failing mechanically stabilized earth retaining wall using permanent soil nails. An investigation found the wall was failing due to improper drainage, unsuitable backfill compaction, and other factors. Ninety-three permanent soil nails were installed through the existing precast concrete panels to depths of up to 40 feet using a hydraulic rotary percussion drill. Verification testing of test nails found lower pullout capacities than initially estimated, requiring nail lengths to increase by 33% on redesign. Construction challenges including high entry points and utilities were addressed through specialized drilling methods and equipment.
Join Andy Lister and Michael McQuaid for an introduction to the design basics behind Geosynthetics and MSE Walls!
The presenters will begin by introducing different geosynthetics and their uses, followed by focusing on geogrid properties and what you need to know when selecting and specifying different geogrids. You will then learn about how mechanically stabilized earth (MSE) retaining walls work. This will include general design requirements, through the review of potential failure modes. The presenters will finish by discussing different MSE retaining wall facing options while highlighting successful past projects.
The document discusses reinforced earth walls, which combine earth and linear reinforcing strips to bear large tensile stresses. It describes how Henri Vidal came up with the concept while trying to build a reinforced sandcastle. The key components of reinforced earth walls are the soil, which is strong in compression, reinforcement like steel or concrete that is strong in tension, and a skin or facing to retain the soil. The document outlines design considerations for reinforced earth retaining walls, including checking external stability as a whole structure and internal stability of reinforcement layers.
“Minimizing time-consuming excavation requirements is a key advantage of the Spectra System with TriAx Geogrid,” says TIC regional manager Lars Nelson.
The Arizona Department of Transportation (ADOT) used the Spectra Roadway Improvement System with Tensar TriAx Geogrid on a test section of an Interstate 10 widening project to address weak subgrade soils. The soils exhibited very low shear strength and required extensive overexcavation under traditional methods. The test section placed one layer of TriAx Geogrid directly on the subgrade to bridge the saturated soils. This allowed construction of the section without significant overexcavation and provided equivalent performance to areas treated with traditional methods, demonstrating it as a more affordable and time-saving option.
Canadian Pacific Railway (CPR) relied on the Spectra Rail System to renovate its facility at the Detroit Intermodal Freight Terminal. The CPR benefited from the Spectra Rail System by substantially reducing the construction time and costs associated with renovating the intermodal facility.
When an existing highway ramp in Puerto Rico had to be relocated, two Tensar products were used to create an embankment to support the highway ramp. Learn more:
Hoosier Energy needed a stable lay-down area near a construction site that was underlain with up to 30 feet of soft fly ash deposits. Burns & McDonnell recommended reinforcing the subgrade with Tensar BX1200 Geogrids to create a stable base using less aggregate. Rode Construction installed a 24-inch layer of bottom ash, covered it with geogrids and 8 inches of crushed limestone. This stabilized the subgrade and allowed construction to continue through wet weather at a lower cost than a thicker aggregate base.
In Florida, Tensar completed the installation of two retaining walls for a luxury timeshare villa, totalling approximately 15,000 square feet of installed block.
The document discusses how Tensar geogrids can be used to stabilize soils and reinforce structures for oil and gas infrastructure projects. Tensar geogrids provide major cost and time savings compared to traditional solutions by allowing thinner road and pad construction, reducing excavation needs, and increasing load bearing capacity even in extreme cold conditions. Their use can also reduce construction emissions by up to 50% through these material reductions.
Unistrut Construction provides design/build services for metal framing applications including medical equipment supports, ceiling grids, catwalks, roofwalks, and fall protection systems. They have over 60 years of experience in conceptual design, engineering, and installation. Their capabilities also include 3D/BIM modeling, product expertise across various applications, and trained installation crews. Their goal on every project is to complete the job on-time, on-budget with high quality workmanship. They have extensive experience working with medical facilities to design and install equipment support systems.
Thanks to Tensar's SierraScape System, the owners of a Canadian Tire store in Ontario were able to build the new store they wanted – where they wanted – and still save more than $1 million (CDN).
The Plains All American Pipeline needed to improve the foundation for a new 205-foot diameter fuel storage tank due to soft soils and groundwater at the site. An MSE raft foundation using Tensar BX Geogrid was selected as it would be more affordable and reduce differential settlement compared to deep foundations. Crews installed the 265-foot diameter MSE raft by excavating 10 feet, placing layers of geotextile and geogrid, and compacting aggregate between the layers. The MSE raft foundation satisfied the project needs of supporting the tank weight while minimizing settlement risks from subsurface conditions.
The Plains All American Pipeline needed to improve the foundation for a new 205-foot diameter fuel storage tank due to soft soils and groundwater at the site. An MSE raft foundation using Tensar BX Geogrid was selected as it would be more affordable and reduce differential settlement compared to deep foundations. Crews installed the 265-foot diameter MSE raft by excavating 10 feet, placing layers of geotextile and geogrid, and compacting aggregate between the layers. The MSE raft foundation satisfied the project needs of supporting the tank weight while minimizing settlement risks from subsurface conditions.
The Plains All American Pipeline needed to improve the foundation for a new 205-foot diameter fuel storage tank due to soft soils and groundwater at the site. An MSE raft foundation using Tensar BX Geogrid was selected as it would be more affordable and reduce differential settlement compared to deep foundations. Crews installed the 265-foot diameter MSE raft by excavating 10 feet, placing layers of geotextile and geogrid, and filling with crushed rock. The MSE raft foundation satisfied the project needs of supporting the tank weight while minimizing settlement risks from subsurface conditions.
Join Jim McKay & Slavek Piotrowski for an introduction to ARCIS – the world’s first ultra-thin, lightweight prestressed architectural precast panel.
The presenters will begin by reviewing current architectural precast concrete solutions, then introduce the ARCIS product line and its unique attributes. A brief overview of how the technology works to produce a strong but thin and light panel and a complete overview of architectural applications for ARCIS will follow.
The session will conclude with installation procedures, design considerations and other uses for the Arcis technology.
ARCIS has been used in the full spectrum of projects from residential high-rise, low-rise, retail storefronts, hospitals, malls, universities, public buildings, stadiums and marinas.
Applications include:
- Architectural facades & rain screens
- Ventilated facades & sunscreens
- Décor, accent walls and interior accents
- Louvers and fins
- Decking
- Stair Treads
Nilex provided multiple geosynthetic solutions for the construction of the 40 km South Fraser Perimeter Road in British Columbia. This included geogrids, geotextiles, and mechanically stabilized earth walls and slopes to address challenges from poor soils and proximity to the Fraser River. Nilex's solutions saved $810,000 and reduced CO2 emissions by 605 tons compared to conventional construction methods. The road was completed ahead of schedule and was the first major project outside the US to receive Greenroads certification.
Keep it Running! – Surface Drainage 201 – Design Basics for Modular Trench Dr...Communications Branding
Join Dominic Turner and Jamie Kershaw for Surface Drainage 201, the interesting conclusion to our 2 part series on Surface Drainage!
The presenters will begin by reviewing key features of modular trench drains and then get into the fascinating step-by-step process for selecting the right modular trench drain system for a project. Key considerations they will cover include system durability and site conditions. You will also learn how to determine the load category for a specific application. The presenters will finish by reviewing the basics of hydraulic calculations for trench drain sizing.
A 1.25-mile section of a CSX rail line near Milstead, Alabama was experiencing excessive ballast settlement and required frequent track maintenance due to poor subgrade soil conditions. CSX considered three alternatives to rehabilitate the track: relocating the line, stabilizing the subgrade with geotextile, or reinforcing the ballast with geotextiles and geogrids. CSX chose the ballast reinforcement solution using Tensar BX1300 geogrids, which involved raising the track, installing geogrid and geotextile, and replacing the ballast. This solution allowed CSX to restore normal train operations at a lower cost than relocating the line.
Thanks to 55,500 square feet of Mesa product, a nine-man installation crew, and meticulous attention to challenging soil conditions, a project in Oregon was completed in a rigorous 4 month period.
A public-private partnership funded a $4.8 million shore stabilization project on Amelia Island in Florida to protect the nearby maritime forest and ecosystem. The project involved placing 1.9 million cubic yards of beach sand as the first phase. As the second phase, Olsen Associates engineered the construction of a 1,500-foot terminal groin and 300-foot detached breakwater using the Triton Marine Mattress System to reduce sediment losses. The mattress system foundations helped address strong tidal currents of 3-4 feet per second during construction. The Industrial Company installed the mattresses and armor stone over 9 months, and state officials have since expressed satisfaction with the project's performance.
The document discusses a bridge project in California where the Dimension Foundation Improvement System by Tensar Earth Technologies was used to support heavy crane activity. The system was installed atop clay and silt soils with high groundwater levels to support crane weights up to 560,000 pounds. It has performed well with only 1/2 to 3/4 inch of settlement under 3,000 pounds per square foot of loading. The system was also able to support 740,000 pounds of crane load without needing temporary piles. The project has garnered interest from other contractors observing its success in supporting extremely heavy loads in difficult soil conditions.
The North Bennington Highway Department, in conjunction with Tensar International and Vermont Local Roads, conducted a new product demonstration featuring the use of Glasspave. Learn all about this product including how it's implemented.
1. Tensar Earth Technologies, Geopier Foundation Company, and GeoStructures teamed up to provide site reinforcement solutions for the new John Paul Jones Multi-Purpose Arena at the University of Virginia.
2. The project involved installing over 1,000 Geopier rammed aggregate piers to reinforce softer soil under the arena footprint.
3. A large SierraScape retaining wall system was also used to relieve lateral pressure and support loads from the arena structure against the slope on the western side of the site.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
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.
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.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
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
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
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.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
Ares cs delaware_12.12
1. CASE STUDY | A09
Transportation Application
A specified plain smooth form finish for the MSE retaining wall panels left little
room for error caused by panel damage or misalignment.
APPLICATION: The Ohio Department of
Transportation (ODOT) wanted to bridge the heavily
traveled County Road 124 over the existing CSX
railway and was looking for an economical solution for
the proposed retaining walls.
THE CHALLENGE: Tight budgets and limited
backfill options presented challenges to the success
of the project. Because the type of aggregate that is
required for steel reinforcement was not locally
available and would have to be hauled in from a
further distance, additional transportation and
material charges would be incurred.
SITE CONDITIONS: A tight site envelope was
created since the overpass was being constructed
directly adjacent to the existing road and in front of an
active railroad. Also, close proximity of utilities
associated with the CSX railroad required the
contractor to alter the construction sequence.
ALTERNATIVE SOLUTIONS: While other MSE
walls were considered for the job, Tensar offered the
only MSE wall system with non-metallic soil
reinforcing elements.
THE SOLUTION: The ARES Retaining Wall System
was specified as an approved MSE wall solution, and
was ultimately chosen by Trucco Construction Co. Inc.
for use on the project. Many factors went into the
decision to install the ARES walls, but the
overwhelming advantage was the ability to use locally
available backfill material with the extremely inert
polymer geogrids, providing a cost savings for the
overall project.
“By utilizing the Tensar ARES Retaining Wall System,
we were able to take advantage of backfill material
from a local source,” said Randy King, vice president of
Trucco Construction. “The ability to use this local
material enabled us to be more competitive at bid
time. We trucked in approximately 100,000 tons of
granular backfill, which equated to around 5,000
loads,” said King. “Given this quantity, utilizing less
trucking was definitely a key component to the
success of the project.”
County Road 124 Overpass
Delaware County, Ohio
Project:
County Road 124 Overpass
Location:
Delaware County, Ohio
Installation:
Fall 2010
Product/System:
Tensar® UX Geogrid
ARES® Retaining Wall Systems
Quantity:
45,000 Sq ft of ARES Panel Walls
Owner/Developer:
Ohio Department of Transportation
Design Engineer:
American Consulting, Inc.
General Contractor:
Trucco Construction Co., Inc.
Materials Supplier:
Geogrid: Tensar International
Precast panels: United Precast
PROJECT HIGHLIGHTS