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Building Services Engineering November/December 2021, 2021 Technological University Dublin

Building Services Engineering November/December 2021

Building Services Engineering

No abstract provided.


Experimental Simulation Of Tornado-Like Vortices And Their Impact On High-Rise Buildings, Arash Ashrafi 2021 The University of Western Ontario

Experimental Simulation Of Tornado-Like Vortices And Their Impact On High-Rise Buildings, Arash Ashrafi

Electronic Thesis and Dissertation Repository

One of the most crucial research areas in wind engineering is tornadoes due to the widespread damages to infrastructure and the environment in North America and other parts of the world. The proper scaling of tornadoes in experimental facilities, generating tornado-like vortices (TLVs) is, therefore, an essential part of evaluating tornado-indued damages on engineered buildings. The capability of producing TLVs of length scales in the range between 1:300 and 1:150 inside the Wind Engineering, Energy and Environment (WindEEE) Dome at Western University has already been demonstrated using only one mode of the full potential of this simulator. A ...


Epics Lakota: Promoting Food Sovereignty On Pine Ridge Indian Reservation, Samantha Bijonowski, Kathleen Johnson, Jonathan Damon 2021 Purdue University

Epics Lakota: Promoting Food Sovereignty On Pine Ridge Indian Reservation, Samantha Bijonowski, Kathleen Johnson, Jonathan Damon

Purdue Journal of Service-Learning and International Engagement

EPICS Team Lakota was started as a way for students to help promote food sovereignty and combat loss of cultural knowledge as felt by the residents of Pine Ridge Reservation, which is located in one of the poorest counties in the United States and is a food desert. In partnership with EPICS students at Oglala Lakota College (OLC) and South Dakota School of Mines (SDSM), students at Purdue came up with the idea of putting up a greenhouse on the Rapid City Campus of OLC. This greenhouse was meant not as a direct solution to food scarcity, but as a ...


Adapting Global Service-Learning Project And Community Partnership Outcomes Using A “Tele-Engineering” Approach In Response To The Covid-19 Pandemic, Christiane Ley, Danielle Angert, Tessa Hudelson, Jordan Harris 2021 Purdue University

Adapting Global Service-Learning Project And Community Partnership Outcomes Using A “Tele-Engineering” Approach In Response To The Covid-19 Pandemic, Christiane Ley, Danielle Angert, Tessa Hudelson, Jordan Harris

Purdue Journal of Service-Learning and International Engagement

The Water Supply in Developing Countries (WSDC) service-learning course at Purdue University has fostered a strong partnership with the La Vega region in the Dominican Republic since 2012. During this time, an interdisciplinary group of engineering and science students has helped design drinking water treatment systems and the group has developed water, sanitation, and health (WASH) education materials. These WASH education and water safety approaches often have been conducted in person in the past. However, with the state of the COVID-19 pandemic and the inability to travel in the fall and spring semesters of the 2020–2021 academic year, the ...


Electrospinning Processing Techniques For The Manufacturing Of Composite Dielectric Elastomer Fibers, Rani Elhajjar 2021 University of Wisconsin - Milwaukee

Electrospinning Processing Techniques For The Manufacturing Of Composite Dielectric Elastomer Fibers, Rani Elhajjar

Civil and Environmental Engineering Faculty Articles

Dielectric elastomers (DE) are novel composite architectures capable of large actuation strains and the ability to be formed into a variety of actuator configurations. However, the high voltage requirement of DE actuators limits their applications for a variety of applications. Fiber actuators composed of DE fibers are particularly attractive as they can be formed into artificial muscle architectures. The interest in manufacturing micro or nanoscale DE fibers is increasing due to the possible applications in tissue engineering, filtration, drug delivery, catalysis, protective textiles, and sensors. Drawing, self-assembly, template-direct synthesis, and electrospinning processing have been explored to manufacture these fibers. Electrospinning ...


Development Of A Cyberinfrastructure For Assessment Of The Lower Rio Grande Valley North And Central Watersheds Characteristics, Linda Navarro, Ahmed Mahmoud, Andrew Ernest, Abdoul Oubeidillah, Jessica Johnstone, Ivan Rene Santos Chavez, Christopher Fuller 2021 The University of Texas Rio Grande Valley

Development Of A Cyberinfrastructure For Assessment Of The Lower Rio Grande Valley North And Central Watersheds Characteristics, Linda Navarro, Ahmed Mahmoud, Andrew Ernest, Abdoul Oubeidillah, Jessica Johnstone, Ivan Rene Santos Chavez, Christopher Fuller

Civil Engineering Faculty Publications and Presentations

Lower Laguna Madre (LLM) is designated as an impaired waterway for high concentrations of bacteria and low dissolved oxygen. The main freshwater sources to the LLM flow from the North and Central waterways which are composed of three main waterways: Hidalgo/Willacy Main Drain (HWMD), Raymondville Drain (RVD), and International Boundary & Water Commission North Floodway (IBWCNF) that are not fully characterized. The objective of this study is to perform a watershed characterization to determine the potential pollution sources of each watershed. The watershed characterization was achieved by developing a cyberinfrastructure, and it collects a wide inventory of data to identify ...


Estimation Of Tropical Cyclone Rain Hazard For Sites In Coastal Region Of Mainland China, Jiyang Gu 2021 The University of Western Ontario

Estimation Of Tropical Cyclone Rain Hazard For Sites In Coastal Region Of Mainland China, Jiyang Gu

Electronic Thesis and Dissertation Repository

China experiences heavy national-wide rainfall events with distinct regional and seasonal characteristics. The tropical cyclones (TCs) originating from the Pacific ocean could cause intense rainfall along the coastal region of mainland China. Besides the severe rainfall, tropical cyclones could also cause high winds, storm surges, and large waves. Increasing direct economic loss is always caused by these tropical cyclones.

The mapping of TC wind hazard for the coastal region in mainland China could be carried out using the wind field model and empirical TC track model. The commonly used TC wind field models employed in TC wind hazard assessment are ...


Effect Of Local Ground Conditions On Earthquake Section Effects In Tbdy-2018, Mehmet Hayrullah Hayrullah Akyıldız, Ali Emre ULU, Kübra ADAR 2021 Dicle Üniversitesi, Mühendislik Fakültesi

Effect Of Local Ground Conditions On Earthquake Section Effects In Tbdy-2018, Mehmet Hayrullah Hayrullah Akyıldız, Ali Emre Ulu, Kübra Adar

Dicle University Journal of Engineering

It is a known fact that local ground conditions affect the seismic behavior of structures. Finally, with the earthquake resistant building design principles updated in 2018, local soil classes have also changed. At the beginning of these changes is that it brings new calculation approaches specific to situations where the ground is weak and high-rise buildings. Moreover, these special accounts are required to be controlled by experts. Considering the local soil conditions in the current earthquake code, the section effects under earthquake effects were obtained for a plane frame in a reinforced concrete structure selected as an example. At any ...


Geological Origin As An Input Variable In Reliability-Based Designs: For An Accurate Exploration In Geotechnical Engineering, Juan Camilo Viviescas, Juan Pablo Osorio 2021 Technological University Dublin

Geological Origin As An Input Variable In Reliability-Based Designs: For An Accurate Exploration In Geotechnical Engineering, Juan Camilo Viviescas, Juan Pablo Osorio

Conference papers

Soil is one of the most difficult materials to characterize realistically, which partly explains the uncertainty between the designs and the geostructures real behavior. Different recommendations have arisen with respect to carrying out field investigations in order to reduce the uncertainties inherent to the soil. However, the field exploration and the implementation of sophisticated geotechnical models have proven to be insufficient to mitigate the geotechnical uncertainty. Therefore, Reliability-Based Designs (RBD) emerge as a decision-making tool through the definition of the probability of failure in conjunction with the typical Factors of Safety. RBD requires a previous understanding of the most appropriate ...


Development Of A New Electro-Osmotic Consolidation Apparatus, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio Agudelo 2021 Universidad de Antioquia

Development Of A New Electro-Osmotic Consolidation Apparatus, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio Agudelo

Conference papers

Electro-osmotic consolidation is a ground improvement technique in which a DC voltage is applied to the soil via electrodes, in order to drain the water contained in the pores increasing the effective stress, and thus improving the geotechnical properties of the soil. The technique increases the shear strength, reduces the compressibility, and changes the chemical composition of the saturated soft clayey and silty soils to which it can be applied. Electro-osmotic consolidation has been successfully applied in different projects worldwide. This paper presents the development of a new electro-osmotic consolidation apparatus built at Universidad de Antioquia. Tests were carried on ...


Building Services Engineering September/October 2021, 2021 Technological University Dublin

Building Services Engineering September/October 2021

Building Services Engineering

No abstract provided.


Sustainable Building Materials Of The Future: Architectural Forms And Structural Design, Sean Sadler, Moritz Meditz 2021 Kennesaw State University

Sustainable Building Materials Of The Future: Architectural Forms And Structural Design, Sean Sadler, Moritz Meditz

Symposium of Student Scholars

This research investigates the use of non-rigid formwork and the techniques aiming to create more efficient concrete forms. During casting, concrete takes the shape of its formwork; traditionally, these formworks are made of rigid materials like steel or wood. The results are prismatic members, which are not optimized for material usage but only for simplicity in construction. Most of the research in the area focuses on improving the constituent materials, while the formworks have remained unchanged throughout the years. By using the approach described in this study, optimized shapes are achieved. These geometries can save up to 30% of the ...


Using Comprehensive Finite Element Analysis To Simulate A Special Connection In Post-Tensioned Concrete, Joshuah Leljedal 2021 Kennesaw State University

Using Comprehensive Finite Element Analysis To Simulate A Special Connection In Post-Tensioned Concrete, Joshuah Leljedal

Symposium of Student Scholars

Finite element analysis (FEA) uses differential equations to determine a computer-based solution that explains interactive behaviors within models of complex structural and mechanical systems, subjected to various loading and environmental conditions. Those systems are partitioned into finite elements consisting of a linear mesh with nodes at each end point, and FEA determines relationships, such as force-displacement, between each of the finite elements. This apportioned model allows systems to be evaluated under multiple loading scenarios. Computer-based FEA offers significant benefits that reduce cost and the time required to perform alternative analysis for complex structural systems. In this research project, a comprehensive ...


A Special Slab-Wall Connection In Post-Tensioned Concrete, Mohammad Jonaidi 2021 Kennesaw State University

A Special Slab-Wall Connection In Post-Tensioned Concrete, Mohammad Jonaidi

Symposium of Student Scholars

Post tensioned concrete is a widely used method in the construction of the slab of high-rise buildings, podium (transferred) slab of wood-framed structures, bridges and so on. The effects of slab shortening due to concrete shrinkage and post-tensioning compression should be considered in the design of the structure. Various connections, between slab and wall, are used in the industry. However, the behavior of a special connection which consists of steel reinforcement dowels wrapped with compressible material has not been investigated. This research study investigates a case that requires a permanent slip detail in which the dowel between the shear wall ...


Shale Softening Based On Pore Network And Laboratory Investigations, Di Zhang 2021 New Jersey Institute of Technology

Shale Softening Based On Pore Network And Laboratory Investigations, Di Zhang

Dissertations

This dissertation consists of two major parts: Firstly, experimental investigation of four major shale softening mechanisms and quantifications of structural parameters. Secondly, numerical simulations of nano-scale flow behaviors using the previous experiments determined parameters based on modified pore network modeling.

Hydraulic fracturing is widely applied to economical gas production from shale reservoirs. Still, the gradual swelling of the clay micro/nano-pores due to retained fluid from hydraulic fracturing causes a gradual reduction of gas production. Four different gas-bearing shale samples are investigated to quantify the expected shale swelling due to hydraulic fracturing. These shale samples are subject to heated deionized ...


Assessment Of Key Imperatives For Enhancing Precast Adoptability In Egypt, Mostafa Sameh 2021 American University in Cairo

Assessment Of Key Imperatives For Enhancing Precast Adoptability In Egypt, Mostafa Sameh

Theses and Dissertations

Precast Concrete’s modular application concept is a major construction method that has been used historically seen in various shapes, forms, and with a wide range of constituents. Examples include Ancient Egypt and China among several impressive structures in old civilizations. The major advantages of precast concrete lie in its adaptability, resilience, and versatility which makes precast concrete one of the most agile building materials. Precast concrete as we know it today has been introduced to our markets over the past several decades. Having similar advantages to that of old precast building methods, the road has been paved for wider ...


A Case Study On Medium And High Rise Timber Buildings, Moustafa EL-Assaly 2021 The University of Western Ontario

A Case Study On Medium And High Rise Timber Buildings, Moustafa El-Assaly

Electronic Thesis and Dissertation Repository

Heavy timber is the upcoming and rising star in the construction industry in the European and north American market. However, this topic is yet to be discovered. Light frame wood LFW has been used for decades but was always restricted to certain limits. Limits that heavy timber can overcome easily. In this thesis, topics related to the application of heavy timber in the construction of buildings are searched. First, a comparative study based on the Canadian market discussing the alternatives heavy timber can offer such as glulam and cross laminated timber (CLT) in comparison with LFW when applied to mid-rise ...


E-Scooter Safety And How To Improve It, Eric Valentino 2021 Portland State University

E-Scooter Safety And How To Improve It, Eric Valentino

altREU Projects

In the last few years, electronic scooters have taken over cities as a means of personal transportation. Between 2017 and 2019 alone, over 30 million trips were recorded across over 100 cities in the US. These scooters pose a safety risk, as 20 in 100,000 trips will result in injury of the rider. On top of this, scooters can cause damage to property, injury pedestrians and motor vehicle drivers, as well as obstruct important infrastructure such as wheelchair ramps. For these reasons, it is important to develop an understanding of the factors that contribute to e-scooter related injuries in ...


Polymer Geogrids: A Review Of Material, Design And Structure Relationships, Rani Elhajjar 2021 University of Wisconsin - Milwaukee

Polymer Geogrids: A Review Of Material, Design And Structure Relationships, Rani Elhajjar

Civil and Environmental Engineering Faculty Articles

Geogrids are a class of geosynthetic materials made of polymer materials with widespread transportation, infrastructure, and structural applications. Geogrids are now routinely used in soil stabilization applications ranging from reinforcing walls to soil reinforcement below grade or embankments with increased potential for remote-sensing applications. Developments in manufacturing procedures have allowed new geogrid designs to be fabricated in various forms of uniaxial, biaxial, and triaxial configurations. The design flexibility allows deployments based on the load-carrying capacity desired, where biaxial geogrids may be incorporated when loads are applied in both the principal directions. On the other hand, uniaxial geogrids provide higher strength ...


Uncertainties In Internal Pressure Of Oil Pipelines And Implications For The Reliability Analysis, Yue Liu 2021 The University of Western Ontario

Uncertainties In Internal Pressure Of Oil Pipelines And Implications For The Reliability Analysis, Yue Liu

Electronic Thesis and Dissertation Repository

The internal pressure is the most important operational load for oil and gas pipelines. The maximum operating pressure (MOP) is the maximum pressure the pipeline is qualified to be operated according to a given standard. In deterministic fitness-for-service (FFS) assessment of in-service pipelines containing flaws such as corrosion defects and cracks, the remaining pressure containment capacity of the pipeline is evaluated and compared with MOP multiplied by a factor of safety to determine if immediate rehabilitation actions for the pipeline are necessary. However, the actual internal pressure of an in-service pipeline is however uncertain and fluctuates with time. Due to ...


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