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Full-Text Articles in Civil Engineering
Carbon Footprint Analysis Of A Large Diameter Water Transmission Pipeline Installation, Lalit Chilana
Carbon Footprint Analysis Of A Large Diameter Water Transmission Pipeline Installation, Lalit Chilana
Civil Engineering Theses
The term pipeline refers to a long line of connected segments of pipe, with pumps, valves, control devices, and other equipment or facilities needed for operating the system. Water transmission pipelines are generally large diameter (more than 12 in.) pipes which transport the water from one place to another. Installation of these pipes is a complex process due to variability of ground conditions over long distance installations. Sometimes, it is difficult to relate pipelines to the environment because of the out of sight nature. But it follows a close relationship with our environment due to various energy consuming activities involved …
Evaluating Beat Structure And Truck Allocation For The Tarrant County Courtesy Patrol, Farzad Daneshgar
Evaluating Beat Structure And Truck Allocation For The Tarrant County Courtesy Patrol, Farzad Daneshgar
Civil Engineering Theses
Non-recurring congestion poses a significant concern to urban freeway drivers. Effective incident management relies on many tools to lessen the overall impact of crashes, road debris, and stalled/disabled vehicles. While many of the tools are based in a region's traffic management center, many urban areas have adopted freeway service patrol (FSP) programs that patrol the freeway network searching for incidents, providing aid to motorists, and assisting with incident management and clearance. While FSP operations can be assessed in terms of response and clearance times, FSP management must consider the beat structure and fleet allocation. This investigation considers response time and …
Characterization And Evaluation Of Gas Generation Potential Of Municipal Solid Waste From A Closed Section Of A Landfill, Sonia Samir
Civil Engineering Theses
At present, there are more than 40 closed municipal solid waste (MSW) landfills around DFW and North Texas. A closed landfill might have potential benefits for gas recovery and utilization due to the presence of organic components in the MSW. The decomposition of organic components of MSW produces gas. The decomposition process after landfill closure may continue for 20 to 100 years depending on the operational practice of the landfill. However, to evaluate the methane potential of a closed landfill it is important to have the understanding of the characteristics of the existing or decomposed landfill wastes. The current study …
Experimental Investigation Of The Behavior Of The Steel Reinforced High Density Polyethylene And Corrugated Metal Pipe, Safa Sadat Masajedian
Experimental Investigation Of The Behavior Of The Steel Reinforced High Density Polyethylene And Corrugated Metal Pipe, Safa Sadat Masajedian
Civil Engineering Theses
Steel reinforced high density polyethylene pipes are gaining popularity these days because of their good performance and advantages of them in comparison to the other pipe materials. By inverting the steel ribs vertically in to the HDPE materials, strength of steel and flexibility and light weight of HDPE materials have been combined. However due the limited study in this area, the failure modes and design parameters are not classified.This study investigates the behavior and failure modes of SR-HDPE pipes under the simulated soil load and compares the results with the data obtained from the test on corrugated metal pipe under …
Evaluation Of Training Needs For Building Information Modeling (Bim), German Pena
Evaluation Of Training Needs For Building Information Modeling (Bim), German Pena
Civil Engineering Theses
The basic premise of Building Information Modeling (BIM) is to use and share the digital model of a project as a source of information for all participants, in order to simulate and analyze potential problems during the project's life-cycle, from conception to operation. BIM is a relatively new technology praised by all participants in the Architecture-Engineering-Construction (AEC) industry for its innovative tools, and the promise of a high return of investment and productivity increase. The construction industry experimented little growth in productivity in the last decades, and is heavily relying on technology rather than intense labor in order to boost …
Effectiveness Of Public Private Partnership For Infrastructure Projects, Pius Francis Kwaku Agyemang
Effectiveness Of Public Private Partnership For Infrastructure Projects, Pius Francis Kwaku Agyemang
Civil Engineering Theses
Public Private Partnership (PPP) has over the years proven to be a good procurement method for Infrastructure projects. The partnership combines the efficiency, expertise, and innovation etc. of the private sector as well as appropriate risk allocation between both public and private sectors. The method also provides an alternate avenue for capital needed for engineering projects. The financing options provided through PPP makes the method increasingly popular due to the current global financial crisis. The method is employed in both developed and developing countries. The United States of America has been using the method since the 1980's. Most governments currently …
The Last Planner System For Realiable Project Delivery, Alok Patel
The Last Planner System For Realiable Project Delivery, Alok Patel
Civil Engineering Theses
The Last Planner System is a production planning system designed to produce predictable work flow and rapid learning in programming, design, construction and commissioning of projects. The Last Planner System (LPS) is developed by Glenn Ballard and Greg Howell as a production planning and control system to assist in smoothing variations in construction work flow, developing planning foresight, and reducing uncertainty in construction operations. The LPS challenges the old practices of developing schedules and pushing them from top management down to frontline people to execute. It advocates collaborative planning, performing collaborative constraint analysis, and learning from planning failures. The LPS …
Use Of Steel Fiber Reinforced Concrete In Structural Members With Highly Complex Stress Fields, Tarun Pareek
Use Of Steel Fiber Reinforced Concrete In Structural Members With Highly Complex Stress Fields, Tarun Pareek
Civil Engineering Theses
Reinforced concrete (RC) members with significant geometric discontinuities and complex stress distributions under loading require considerable analyses and usually complicated reinforcement detailing. RC members with large openings are one of the examples. These large openings may interrupt the load transfer by direct concrete struts and cause substantial decrease in strength and unpredictable failure modes. The reinforcement detailing of these concrete members based on strut-and-tie models (STMs) is generally complicated and very often, these models cannot predict the failure mechanism due to localized damages. The actual stress fields in such members are typically very different from that predicated by STMs, as …
The Effect Of Fiber Corrosion On Shear Capacity Of Steel Fiber Reinforced Concrete Beams And An Initial Investigation On Alkali-Silica Reaction In Steel Fiber Reinforced Concrete, Regina Nyambura Waweru
The Effect Of Fiber Corrosion On Shear Capacity Of Steel Fiber Reinforced Concrete Beams And An Initial Investigation On Alkali-Silica Reaction In Steel Fiber Reinforced Concrete, Regina Nyambura Waweru
Civil Engineering Theses
The first part of this research aims to investigate the effect of fiber corrosion on the shear capacity of Steel Fiber Reinforced Concrete beams. It will also strive to determine at what reduction in minimum diameter of the fiber does the effect of corrosion become most severe on the shear capacity of the beam. Four simply-supported beams with a shear span to depth ratio of 3.3 were subjected to a monotonically increasing load. The targeted concrete compressive strength for all beams was 6000 psi. This however differed from the measured strength due to a number of factors as will be …
Sustainable Reutilization Of Excavated Trench Material, Rajini Kanth Reddy Karduri
Sustainable Reutilization Of Excavated Trench Material, Rajini Kanth Reddy Karduri
Civil Engineering Theses
Sustainability is becoming a key factor in most construction projects. In most construction projects, personnel are spending efforts to understand the social, economic and environmental impacts of the various facets of construction projects. Geotechnical engineering can contribute to the sustainability of the project via selecting sustainable materials and construction processes that would to lead several tangible benefits. For example a pipeline generally runs through a long and varying terrain which results in innumerable environmental impacts during a pipeline installation. Therefore, it is necessary for the design engineer and also the owner to estimate these impacts of pipe installation and evaluate …
The Effects Of A Variable Modulus Of Elasticity On Prestress Losses In Bridge Girders, Brahama Prakashni Singh
The Effects Of A Variable Modulus Of Elasticity On Prestress Losses In Bridge Girders, Brahama Prakashni Singh
Civil Engineering Theses
The purpose of this research is to evaluate a method proposed by Franz Dischinger (Dischinger, 1939) to consider the effects of a variable modulus of elasticity (MOE) of concrete over a period of time. Current guidelines suggested by the American Association of State Highways and Transportation Officials (AASHTO) assume a constant value for the MOE and base its calculation on the unit weight of concrete and the twenty eight day compressive strength of concrete. A few methods such as the ACI 209 Model Code (ACI 209, 1982) and CEB-FIP 1990 (CEB-FIP 1990, 1990) provide guidelines for the calculation of a …
Determination Of Geotechnical Properties Of Clayey Soil From Resistivity Imaging (Ri), Golam Kibria
Determination Of Geotechnical Properties Of Clayey Soil From Resistivity Imaging (Ri), Golam Kibria
Civil Engineering Theses
The use of resistivity imaging (RI) in the subsurface investigation has increased in recent years. RI is a non destructive method and provides a continuous image of the subsurface. Based on the electrical conduction phenomenon of soil, spatial and temporal moisture variation and he-terogeneity of subsurface can be evaluated from RI. However, only qualitative evaluation of sub-surface can be obtained from RI. The correlation between RI results and geotechnical engineering properties of soils has become an important issue for rigorous use of this method in site in-vestigation. The current study attempts to develop the relationship and correlations between geo-technical parameters …
Evaluation Of Structural Monitoring Methods For Large Diameter Water Transmission Pipelines, Moksha Kizhakke Covilakam
Evaluation Of Structural Monitoring Methods For Large Diameter Water Transmission Pipelines, Moksha Kizhakke Covilakam
Civil Engineering Theses
The water transmission lines span thousands of miles and form a significant part of the underground infrastructure of United States. The condition of water pipelines deteriorates with time and becomes more vulnerable to catastrophic failures and often results in costly replacement measures. With the advancement of technology, several new techniques have been developed for the condition assessment of water pipelines. However, no unified standards are followed for the selection of these technologies. Moreover, the current decision making methodology followed by water pipeline operators is usually based on individual experience and project requirements and resources. This research presents a comprehensive overview …
Local Calibration Of Mechanistic Empirical Pavement Design Guide For North Eastern United States, Shariq A. Momin
Local Calibration Of Mechanistic Empirical Pavement Design Guide For North Eastern United States, Shariq A. Momin
Civil Engineering Theses
The Mechanistic-Empirical Pavement Design Guide (MEPDG) developed under the National Cooperative Highway Research Program (NCHRP) 1-37A project is based on mechanistic-empirical analysis of the pavement structure to predict the performance of the pavement under different sets of conditions (traffic, structure and environment). MEPDG takes into account the advanced modeling concepts and pavement performance models in performing the analysis and design of pavement. The mechanistic part of the design concept relies on the application of engineering mechanics to calculate stresses, strains and deformations in the pavement structure induced by the vehicle loads. The empirical part of the concept is based on …
Evaluation Of Resistivity Imaging (Ri) Method For Determining Unknown Deep Foundation Depth, Mohammad Sadik Khan
Evaluation Of Resistivity Imaging (Ri) Method For Determining Unknown Deep Foundation Depth, Mohammad Sadik Khan
Civil Engineering Theses
There are approximately 580,000 highway bridges in the National Bridge inventory and 104,000 of these bridges are estimated to have unknown foundations type and/or depth. Determining unknown foundation length and type of bridge foundation is becoming an important issue for State DOTs to ensure the safety of the bridge. There are several methods available to determine unknown foundation depth based on specific site conditions and type of foundation to be tested. Resistivity Imaging (RI) is a non destructive method to investigate the subsurface condition. The objective of current study was to determine unknown bridge foundation depth of three bridges at …
Evaluation Of Building Information Modeling (Bim) For Water Transmission Pipelines, Rakesh Gopala Raju Doraiswamy
Evaluation Of Building Information Modeling (Bim) For Water Transmission Pipelines, Rakesh Gopala Raju Doraiswamy
Civil Engineering Theses
In the construction industry, water transmission pipelines projects typically require two-dimensional drawings for transferring design data to the field. These drawings are referred as construction documents and serve as the source documents for subsequent facility management. However, two-dimensional drawings become difficult to interpret when there are too many entities involved needing information. In addition, when there are too many drawings for separate components such as plans, sections, and details, the chances of errors and omissions are more likely to happen. On the other hand, Building Information Modeling (BIM) is a new trend in construction industry and is being increasingly used …
Comparison Of Dust Generation From Open Cut And Trenchless Technology Methods For Utility Construction, Sahajanand Madhusudan Kamat
Comparison Of Dust Generation From Open Cut And Trenchless Technology Methods For Utility Construction, Sahajanand Madhusudan Kamat
Civil Engineering Theses
Construction industry has changed many aspects of human life and is still evolving at a rapid pace. New and better technologies which are environmentally friendly and safe are being introduced in this industry. But with the passage of time, this industry has got riddled with loss of human life and quality due to various scenarios. One of the major contributors to such conditions is dust generated on a construction site. The amount of dust a worker inhales during his whole career is very dangerous. This research has found out that using trenchless technology, this exposure to dust can be reduced …
An Overview Of Mitigation Strategies For Settlements Under Bridge Approach Slabs, Raja Veerendra Yenigalla
An Overview Of Mitigation Strategies For Settlements Under Bridge Approach Slabs, Raja Veerendra Yenigalla
Civil Engineering Theses
Settlement and heave related movements of bridge approach slabs relative to bridge decks create a bump in the roadway causing inconvenience to the travelling public and at times so large as to make travelling unsafe. Hence, it is important to adopt suitable remedial methods to mitigate the approach settlements so as to ensure safe traveling conditions and also to decrease the repair/maintenance costs. This thesis presents an overview of a few case studies on different mitigation techniques applied on bridge approach settlement problems at various locations in the state of Texas. The methods employed to mitigate the settlement including Polyurethane …
Evaluation Of Building Information Modeling Applications For Small Construction Companies, Agustin Villafana
Evaluation Of Building Information Modeling Applications For Small Construction Companies, Agustin Villafana
Civil Engineering Theses
This thesis concerns developing recommendations to help small construction company's transition from traditional two dimensional plans to a Building Information Modeling (BIM) management process. Due to the cost of implementing BIM, the primary focus of the thesis is onthe transitioning state of these two management areas in an effort to facilitate full integration of smaller contractors into BIM technologies at a future time.Three case studies are used to assess and evaluate the effects of building information modeling on the schedule, material procurement, and information modeling aspects of a project. The intent of the case studies is to demonstrate a net …