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Below-Grade Structural Flexibility Study For Seismic-Resistant, Self-Centering, Concentrically- Braced Frames, Derek A.J. Hauff 2016 The University Of Akron

Below-Grade Structural Flexibility Study For Seismic-Resistant, Self-Centering, Concentrically- Braced Frames, Derek A.J. Hauff

Honors Research Projects

Self-centering, concentrically braced frames (SC-CBFs) are seismic-resistant lateral-load resisting systems for buildings that increase the lateral drift capacity in comparison to conventional CBFs. Two different substructures were examined on a six-story and a ten-story building to see which below grade structure was more efficient and how the flexibility from the addition of a basement compares to previous research of SC-CBFs structures without basements.

The study was completed in phases: modeling of forces in SAP2000, sizing of structural members, coding of structure into the modeling program Open System for Earthquake Engineering Simulation (OpenSees), and comparison of the output data.

Substructure one ...


Investigations Of The Presence Of Caffeine In The Rudawa River, Kraków, Poland, Agnieszka Jagoda, Witold Zukowski, Barbara Dąbrowska 2015 Cracow University of Technology

Investigations Of The Presence Of Caffeine In The Rudawa River, Kraków, Poland, Agnieszka Jagoda, Witold Zukowski, Barbara Dąbrowska

Witold Zukowski

Caffeine concentration in surface water (Rudawa River, Kraków, Poland) has been being investigated since 2011. The method applied for investigations was developed in 2011, and the first series of measurements of caffeine concentration in surface water began in 2011. Caffeine concentration was determined by the gas chromatography-mass spectrometry (GC-MS) method. Solid phase extraction (SPE) was used to enrich the concentration of caffeine in water samples. As an internal standard, the caffeine isotope (13)C3 in methanol (Sigma Aldrich) was used. The values of four additional parameters (concentration of nitrates, biochemical oxygen demand after 7 days, number of Escherichia coli and ...


Effects Of Disinfectants On The Formation Of Aldehydes, Megan Dutra 2015 University of Massachusetts - Amherst

Effects Of Disinfectants On The Formation Of Aldehydes, Megan Dutra

Environmental & Water Resources Engineering Masters Projects

Disinfection by-products have been the subject of intense study in the water treatment community due to the established adverse health effects of many known by-products and the postulated adverse health effects of many other known and unknown by-products. Aldehydes are one such group of by-products, containing compounds of both known and postulated health effects. This thesis explores the formation of simple alkyl aldehydes due to different disinfectants; these relationships are important because they can aid in determining possible by-product formation of potentially harmful substances with a particular disinfectant or disinfectant combination. Compounds such as these biodegrade easily, presenting a potential ...


Morphological Response Of Sand Bed Streams To Unsteady Flow Events: An Experimental Study, Etta Haley Gunsolus 2015 The University of Western Ontario

Morphological Response Of Sand Bed Streams To Unsteady Flow Events: An Experimental Study, Etta Haley Gunsolus

Electronic Thesis and Dissertation Repository

Changes in riverine discharge, such as those due to reservoir flushing, seasonal variation or extreme precipitation events, can alter sediment transport rates and morphology of the stream bed. Experimental research investigated the effect of unsteady flow event hydrographs on stream bed morphological response. Laboratory experiments were conducted in a 5.0 m-long sediment transport flume with a bed comprised of a medium sand. Experimental hydrographs were composed of antecedent (base-flow), unsteady event (flood) and post- flood (return to base-flow) stages. Three distinct series of experimental laboratory runs were conducted to systematically investigate the effect of three characteristics of unsteady flow ...


Prefabricated Building, Purdue ECT Team 2015 Purdue University

Prefabricated Building, Purdue Ect Team

ECT Fact Sheets

With the continuous demand for construction of new buildings, an easier, more sustainable, energy-efficient and environmentally friendly building method is necessary to save time, energy and cost. Hence, there has been an increasing need for a system such as BROAD sustainable building (BSB). A form of prefabricated building by BROAD Sustainable Building Co., LTD (BSB). It consists of flooring and ceiling, embedded shafts of ventilation, water supply & drainage, electricity and lighting. Other items include pillars, diagonal bracings, doors, windows, walls and sanitary wares, air conditioning, air quality products, lifts, building thermal insulations.


Vertical Icf Wall System, Purdue ECT Team 2015 Purdue University

Vertical Icf Wall System, Purdue Ect Team

ECT Fact Sheets

Traditional ICF systems’ installation is tedious and labor intensive resulting in out of level, bowing, and snaking walls with a significant amount of bracing adding to the cost. ICF (Insulated Concrete Form) walls are a form of structural walls used for construction. Hobbs Vertical ICF system uses less concrete, more recycled material and requires less labor for construction. The furring assemblies and retainer clips of the Hobbs VICF system are made from 100% recycled post-industrial waste.


Post-Tensioned Concrete Shear Wall, Purdue ECT Team 2015 Purdue University

Post-Tensioned Concrete Shear Wall, Purdue Ect Team

ECT Fact Sheets

The post-tension concrete shear wall by Tipping Mar will replace the conventional concrete shear wall in earthquake prone areas in many instances, depending on the height and scale of the building.


Rapid Drying Concrete, Purdue ECT Team 2015 Purdue University

Rapid Drying Concrete, Purdue Ect Team

ECT Fact Sheets

One of the essential problems that are faced during construction is the drying of concrete and the presence of moisture which affects floor coverings that need to be placed. The rapid-drying characteristic in Aridusâ concrete allows for the quick reduction of moisture vapor that travels through the concrete pores of the concrete.


Ap Alternatives Modular Solar Racking, Purdue ECT Team 2015 Purdue University

Ap Alternatives Modular Solar Racking, Purdue Ect Team

ECT Fact Sheets

Solar panels have been used to generate and supply electricity in various applications such as residential and commercial buildings. Therefore, a need for a quicker approach to installation as well as the need to reduce workmanship to speed up the process is needed. Solar racks are developed through the use of automated equipment to “preassemble the racking hardware, pre-install the solar modules, and drive helical anchors into the ground rapidly”. So instead of installing one panel at a time, AP Alternatives has created a new method that uses machines to make the process easier. This new automation of the installation ...


Tropical Cyclone Wind Hazard Assessment For Southeast Part Of Coastal Region Of China, Sihan Li 2015 The University of Western Ontario

Tropical Cyclone Wind Hazard Assessment For Southeast Part Of Coastal Region Of China, Sihan Li

Electronic Thesis and Dissertation Repository

Tropical cyclone (TC) or typhoon wind hazard and risk are significant for China. The return period value of the maximum typhoon wind speed is used to characterize the typhoon wind hazard and assign wind load in building design code. Since the historical surface observations of typhoon wind speed are often scarce and of short period, the typhoon wind hazard assessment is often carried out using the wind field model and TC track model. For a few major cities in the coastal region of mainland China, simple or approximated wind field models and a circular subregion method (CSM) have been used ...


3d Printing For Bricks, Purdue ECT Team 2015 Purdue University

3d Printing For Bricks, Purdue Ect Team

ECT Fact Sheets

Building Bytes, by Brian Peters, is a project that uses desktop 3D printers to print bricks for architecture. Instead of using an expensive custom-made printer, it uses a normal standard 3D printer which is available for everyone and makes it more accessible and also easier for fabrication.


Self-Sustaining Smouldering Combution As A Novel Disposal Destruction Method For Waste Water Biosolids, Tarek L. Rashwan 2015 The University of Western Ontario

Self-Sustaining Smouldering Combution As A Novel Disposal Destruction Method For Waste Water Biosolids, Tarek L. Rashwan

Electronic Thesis and Dissertation Repository

Managing biosolids, the major by-product from wastewater treatment plants (WWTPs), persists as a major global challenge that often constitutes the majority of WWTP operating costs. Self-sustained smouldering is a new approach for organic waste treatment, in which the waste (i.e., the fuel) is destroyed in an energy efficient manner after mixing it with sand. Smouldering has never been applied to biosolids. Column experiments, using biosolids obtained from a WWTP, were employed to identify if - and under what conditions - smouldering could be used for treating biosolids. The parameter space in which smouldering was self-sustaining was mapped as a function of ...


Insights And Opportunities: Challenges Of Canadian First Nations Drinking Water Operators, Heather M. Murphy, Elliott Corston-Pine, Yvonne Post, Edward A. McBean 2015 University of Guelph

Insights And Opportunities: Challenges Of Canadian First Nations Drinking Water Operators, Heather M. Murphy, Elliott Corston-Pine, Yvonne Post, Edward A. Mcbean

The International Indigenous Policy Journal

Providing safe drinking water continues to be a challenge in Canadian First Nations communities. In 2011, in Ontario and British Columbia, only 45 percent and 51 percent of 143 and 160 First Nations had water systems with a fully trained certified operator, respectively. The objective of this research was to investigate the issues of operator training, retention, and job satisfaction through semi-structured interviews and surveys of water system operators in Ontario and British Columbia. Operators reported the lack of funding for operation and maintenance, and a lack of support from band council as challenges in performing their jobs. Of those ...


Evaluation Of Filtration Performance Of A Rotating Belt Filter For Different Primary Wastewater Influents., Tulip Chakraborty 2015 The University of Western Ontario

Evaluation Of Filtration Performance Of A Rotating Belt Filter For Different Primary Wastewater Influents., Tulip Chakraborty

Electronic Thesis and Dissertation Repository

Human activities around the world are responsible for production of enormous amount of wastewater, which needs to be treated quickly and effectively to avoid environmental concerns and other health implications. As an alternative to primary settlers in treating municipal wastewater, Salsnes, a subsidiary company of Trojan Technologies offers rotating belt filters (RBF) to treat the wastewater. A bench scale filtration unit of the RBF was developed to investigate the effect of varying water qualities from several wastewater plants in London, Ontario on the performance of the filter. The unit can achieve up to 80% reduction in total suspended solids (TSS ...


Field Scale Application Of Nanoscale Zero Valent Iron: Mobility, Contaminant Degradation, And Impact On Microbial Communities, Chris M.D. Kocur 2015 The University of Western Ontario

Field Scale Application Of Nanoscale Zero Valent Iron: Mobility, Contaminant Degradation, And Impact On Microbial Communities, Chris M.D. Kocur

Electronic Thesis and Dissertation Repository

This thesis began by verifying that nanoscale zero valent iron (nZVI) synthesis methods could be scaled up and implemented at the field scale in a safe manner. This led to successful demonstration of nZVI injection and mobility under constant head gravity injection into a contaminated utility corridor in Sarnia, Ontario. Where field studies have fallen short in the past was linking the somewhat qualitative field geochemical parameters to other evidence of nZVI transport. Definitive nZVI detection was elusive in previous field studies due to the highly reactive nature of the particles caused by their high surface area. nZVI was detected ...


The Effects Of Volatile Fatty Acids On The Performance Of Microbial Electrolysis Cells, Nan Yang 2015 The University of Western Ontario

The Effects Of Volatile Fatty Acids On The Performance Of Microbial Electrolysis Cells, Nan Yang

Electronic Thesis and Dissertation Repository

This study investigated the performance of microbial electrolysis cells (MECs) fed with three common fermentation products: acetate, butyrate, and propionate. Each substrate was fed to the reactor for three consecutive-batch cycles. The results showed high current densities for acetate, but low current densities for butyrate and propionate (maximum values were 6.0 ± 0.28, 2.5 ± 0.06, 1.6 ± 0.14 A/m2, respectively). Acetate also showed a higher coulombic efficiency of 87 ± 5.7 % compared to 72 ± 2.0 and 51 ± 6.4 % for butyrate and propionate, respectively. This paper also revealed that acetate could be easily ...


Redefining Commercial Vehicle Permitting And Credentialing Violations, Andrew Martin, Jennifer R. Walton, Valerie J. Keathley 2015 University of Kentucky

Redefining Commercial Vehicle Permitting And Credentialing Violations, Andrew Martin, Jennifer R. Walton, Valerie J. Keathley

Kentucky Transportation Center Research Report

The objective of this study was to analyze enforcement and adjudication of common commercial vehicle tax, credentialing, and safety offenses. This study examined violations of the International Fuel Tax Agreement and the Kentucky Intrastate Tax, Kentucky’s weight distance tax, Unified Carrier Registration, Kentucky size and weight laws, and federal safety regulations from 2004 to 2013. Statistical analysis showed declining conviction rates, increasing dismissal rates, and a drop in collections of court costs and fines associated with these offenses. In addition, adjudication varied significantly from district court to district court, which is creating an equity issue for motor carriers and ...


Effect Of Thermal Loads On Substructures: New Trammel Creek Bridge On Ky-100 In Allen County, Kentucky, Zhihui Zhu, Michael T. Davidson, Issam E. Harik, Charlie Sun 2015 University of Kentucky

Effect Of Thermal Loads On Substructures: New Trammel Creek Bridge On Ky-100 In Allen County, Kentucky, Zhihui Zhu, Michael T. Davidson, Issam E. Harik, Charlie Sun

Kentucky Transportation Center Research Report

When infrastructure is subjected to temperature changes, structural members that are either partially or fully restrained against motion can develop internal stresses. The phenomenon of temperature-induced internal stress development in superstructure members has prompted the American Association of State Highway and Transportation Officials (AASHTO) to include provisions for determining superstructure temperature load effects. However, little consideration has been given to explicitly quantifying the effect that thermal stresses have on foundation systems such as intermediate bridge piers. The objective of this study is to instrument a multi-span integral abutment bridge with temperature and bridge response monitoring devices, and ultimately, to make ...


Spatial Database For Intersections, Eric R. Green, Christopher L. Blackden, Michael A. Fields 2015 University of Kentucky

Spatial Database For Intersections, Eric R. Green, Christopher L. Blackden, Michael A. Fields

Kentucky Transportation Center Research Report

Deciding which intersections in the state of Kentucky warrant safety improvements requires a comprehensive inventory with information on every intersection in the public roadway network. The Kentucky Transportation Cabinet (KYTC) had previously catalogued only those intersections where state-maintained roadways met. However, this inventory did not account for intersections between state- and locally-maintained routes, nor was it designed to accommodate regular updates. As such, the Kentucky Transportation Center (KTC) at the University of Kentucky developed a methodology to create and maintain a full inventory of every intersection in the state. The database contains precise location information as well as several safety ...


Synthesis Of Public-Private Partnerships: Potential Issues And Best Practices For Program And Project Implementation And Administration, Bryan Gibson, Candice Y. Wallace, Roy E. Sturgill 2015 University of Kentucky

Synthesis Of Public-Private Partnerships: Potential Issues And Best Practices For Program And Project Implementation And Administration, Bryan Gibson, Candice Y. Wallace, Roy E. Sturgill

Kentucky Transportation Center Research Report

Public-private partnerships (P3s or PPPs) offer an innovative procurement method for the public sector. P3s involve collaborations between the public and private sectors to finance, develop or maintain transportation infrastructure. In an era of shrinking budgets and increased demand for transportation infrastructure, the Kentucky Transportation Cabinet (KYTC) can analyze experiences in other states to determine a best path forward on the issue of P3s. The objective of this study is to examine benefits and drawbacks of using P3s, current trends and past performance of P3s in the procurement of state transportation infrastructure projects, and common legislative statutes relating to P3s ...


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