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Full-Text Articles in Architecture

A Simple Method For Estimation Of Queue Length, S. P. Anusha, Lelitha Devi Vanajakshi, Anuj Sharma Dec 2013

A Simple Method For Estimation Of Queue Length, S. P. Anusha, Lelitha Devi Vanajakshi, Anuj Sharma

Civil Engineering Faculty Publications

Urban arterials are characterized by frequent intersections. Queue length and delay are the two primary measures of performance of intersection. These measures play a primary role in determining the arterial performance. This article presents a methodology to determine the number of vehicles in queue at a signalized intersection for under saturated traffic conditions. The results obtained were validated using actual values that are manually extracted. The root-mean-square error is of the range 1.3 vehicles for estimation of number of vehicles in queue. The various aspects that have to be considered in accurate estimation of performance measures are also discussed.


A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati Dec 2013

A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati

UNLV Theses, Dissertations, Professional Papers, and Capstones

Energy consumption in residential homes has been a subject of research related to sustainability. Reduction in the consumption of energy is a goal of sustainable construction. The Department of Energy (DOE) started a Solar Decathlon competition in 2002 in which the students from different universities around the globe build an energy efficient and affordable home suitable for their climate and location. The main goal of this competition is to select the best home that is designed and built in a sustainable way. In this study, the home designed and constructed for participation in the competition by the students at University ...


Approximating The Seismic Amplification Effects Experienced By Solar Towers Mounted On The Rooftops Of Low-Rise Industrial Buildings, Peter Luiz Balla Nov 2013

Approximating The Seismic Amplification Effects Experienced By Solar Towers Mounted On The Rooftops Of Low-Rise Industrial Buildings, Peter Luiz Balla

Master's Theses and Project Reports

This thesis investigates the acceleration amplification experienced by solar towers mounted on the rooftops of low-rise industrial buildings during a seismic event. Specifically, this thesis looks to assess the validity of using amplification factors adopted by the ASCE 7-05Minimum Design Loads for Buildings and Other Structures to approximate seismic acceleration amplification for roof-mounted solar towers. To investigate the validity of the ASCE 7-05 amplification factors, this thesis conducts timehistory analyses of three theoretical solar towers mounted on the roof of a case study building. The time history analyses are conducted in the finite element computer modeling program SAP 2000 using ...


Compression Testing And Failure Modes Of Steel-Concrete Composite (Sc) Structures For Nuclear Containment, Patrick Michael Wanamaker, Amit H. Varma Oct 2013

Compression Testing And Failure Modes Of Steel-Concrete Composite (Sc) Structures For Nuclear Containment, Patrick Michael Wanamaker, Amit H. Varma

The Summer Undergraduate Research Fellowship (SURF) Symposium

Although being able to provide much cleaner power than burning coal and other fossil fuels, nuclear power plants are still a tough sell to the general public due to their history of being spontaneously dangerous. The containment structures surrounding these nuclear plants, however, can play a huge role in reducing the risks associated with them. Relatively new designs for these containment assemblies, known as SC (steel-concrete composite) structures, aim to increase the strength and durability of the containment facilities while keeping costs down. By varying the spacing between shear studs, the ratio of concrete to steel, and the ratio of ...


Environmental Monitoring In Preparation For The Installation Of A Green Roof, Andrew N. Martin, Ming Qu Oct 2013

Environmental Monitoring In Preparation For The Installation Of A Green Roof, Andrew N. Martin, Ming Qu

The Summer Undergraduate Research Fellowship (SURF) Symposium

Green roofs are becoming an increasingly popular way to improve the environmental, economic, and aesthetic performance of both new and existing buildings. Along with the green roofs themselves, it is also common to install sensors to measure various environmental parameters that are affected by or important to the operation of the roof such as precipitation, temperature, and runoff. However, for most of these systems, the sensors are installed at the same time or even after the green roof. Therefore, no before-and-after comparisons can be made for those roofs. To account for this missing data, monitoring equipment was installed on a ...


Decorative Ferrocement Elements, Letitia Nadasan, Traian Onet, Ana Ioana Petean, Marian Sabau Oct 2013

Decorative Ferrocement Elements, Letitia Nadasan, Traian Onet, Ana Ioana Petean, Marian Sabau

Marian Sabau

Ferrocement has the versatility that can be 'sculptured' or shaped into numerous fascinating structures and objects for very wide applications. The exposure of this technology to engineers in general is rather minimal in Romania and many are skeptical about it. The potential is not exploited for it being unconventional in nature. Its ability to compete or use as a cheaper alternative and yet a promising technology in ensuring improved living standard and environmental quality must not be neglected. The paper discusses about the applicability of ferrocement in the Romanian scene with respect to recreation and home use. The ferrocement elements ...


Project Complexity Mapping In Five Dimensions For Complex Transportation Projects, Douglas D. Gransberg, Jennifer S. Shane, Carla Lopez Del Puerto Sep 2013

Project Complexity Mapping In Five Dimensions For Complex Transportation Projects, Douglas D. Gransberg, Jennifer S. Shane, Carla Lopez Del Puerto

Douglas D. Gransberg

Traditional three-dimensional project management theory is based on optimizing the cost-schedule-technical dimensions. Recent studies in the United Kingdom, Canada, and Australia have shown that the current project management body of knowledge may not be adequate to address interrelated and dependent variables encountered on complex projects. This paper reports the findings of an international research team’s detailed study of eighteen complex projects, which confirms the findings of the previous research and proposes a framework upon which a complex transportation project’s scope of work can be better conceptualized and a methodology to graphically display a project’s complexity in order ...


Efectul Confinării Asupra Conlucrării Betonului Autocompactant Cu Armătura, Marian Sabau Aug 2013

Efectul Confinării Asupra Conlucrării Betonului Autocompactant Cu Armătura, Marian Sabau

Marian Sabau

Prezenta lucrare aduce contribuții legate de fenomenul de aderenţă dintre betonul autocompactant şi armătură. Principalul obiectiv al programului experimental a fost studierea fenomenului de aderenţă dintre betonul autocompactant şi barele de armătură, mai precis a efectului confinării betonului cu armătură transversală, pentru validarea sau îmbunătăţirea modelelor teoretice existente.


Implementation Of Integrated Project Delivery On Department Of Navy Military Construction Projects, Christopher S. Lee Aug 2013

Implementation Of Integrated Project Delivery On Department Of Navy Military Construction Projects, Christopher S. Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

The concept of the project delivery system refers to the overall processes by which a project is designed, constructed, and/or maintained. There are many different types of project delivery systems to fit particular situations involving the owner and his intended project. The project delivery system is what establishes the framework that enables a construction project to be developed and ultimately executed.

The construction industry has observed that projects (both private and public) frequently suffer from factors such as adversarial relationships, low roductivity, high inefficiency and rework, frequent contractual disputes concerning who was at fault, and lack of innovation. Not ...


Experimental Determination On Bond Strength Of Rebar In Self-Compacting Concrete, Marian Sabau, Traian Onet, Ana Ioana Petean Jun 2013

Experimental Determination On Bond Strength Of Rebar In Self-Compacting Concrete, Marian Sabau, Traian Onet, Ana Ioana Petean

Marian Sabau

Experimental results of the local bond stress-slip relationship of deformed reinforcing bars embedded in confined self-compacting concrete are presented. A total of 58 pull-out specimens were tested. Each one of these specimens simulated the confined region of a beam-column joint. The main analyzed parameters were the concrete type, the confining reinforcement, the reinforcement bar diameter, the embedded length of bars. The results showed that in order to ensure that the bond failure is caused by pull-out, a restraining reinforcement must be provided. The paper also presents a comparison between self-compacting concrete (SCC) and normally vibrated concrete (NVC).


Seismic Performance Comparison Of A Fixed-Base Versus A Base-Isolated Office Building, Nicholas Reidar Marrs Jun 2013

Seismic Performance Comparison Of A Fixed-Base Versus A Base-Isolated Office Building, Nicholas Reidar Marrs

Master's Theses and Project Reports

The topic of this thesis is base isolation. The purpose of this thesis is to offer a relative understanding of the seismic performance enhancements that a typical 12-story steel office building can achieve through the implementation of base isolation technology. To reach this understanding, the structures of a fixed-base office building and a base-isolated office building of similar size and layout are designed, their seismic performance is compared, and a cost-benefit analysis is completed. The base isolation system that is utilized is composed of Triple Friction Pendulum (TFP) bearings.

The work of this thesis is divided into four phases. First ...


Climate Change Adaptation Chapter: Marshfield, Massachusetts, Joshua H. Chase, Jonathan G. Cooper, Rory Elizabeth Fitzgerald, Filipe Antunes Lima, Sally R. Miller, Toni Marie Pignatelli May 2013

Climate Change Adaptation Chapter: Marshfield, Massachusetts, Joshua H. Chase, Jonathan G. Cooper, Rory Elizabeth Fitzgerald, Filipe Antunes Lima, Sally R. Miller, Toni Marie Pignatelli

Jonathan G. Cooper

Climate change, understood as a statistically significant variation in the mean state of the climate or its variability, is the greatest environmental challenge of this generation (Intergovernmental Panel on Climate Change, 2001). Marshfield is already being affected by changes in the climate that will have a profound effect on the town’s economy, public health, coastal resources, natural features, water systems, and public and private infrastructure. Adaptation strategies have been widely recognized as playing an important role in improving a community’s ability to respond to climate stressors by resisting damage and recovering quickly. Based on review of climate projections ...


Economia De Energie Realizată Prin Folosirea Betonului Autocompactant, Marian Sabau, Traian Onet, Ana Ioana Petean, Letitia Nadasan May 2013

Economia De Energie Realizată Prin Folosirea Betonului Autocompactant, Marian Sabau, Traian Onet, Ana Ioana Petean, Letitia Nadasan

Marian Sabau

Betonul autocompactant (BAC) este un beton inovativ care nu necesită vibrare în momentul punerii în operă, acesta fiind capabil să curgă sub propia greutate, poate să umple complet cofrajele şi să ajungă la o compactare corespunzătoare fără a fi nevoie de o compactare mecanică. Această lucrare prezintă avantajele acestui nou tip de beton, materialele constituente, metodele de testare, precum şi dezavantajele care le aduce compactarea prin vibrare asupra betonului obişnuit. Eliminarea vibrării are de asemenea efecte benefice asupra condițiilor de muncă în procesul de producere al betonului.


Precast/Prestressed Concrete Truss-Girder For Roof Applications, Peter S. Samir May 2013

Precast/Prestressed Concrete Truss-Girder For Roof Applications, Peter S. Samir

Construction Systems -- Dissertations & Theses

Steel trusses are the most popular system for supporting long span roofs in commercial buildings, such as warehouses and aircraft hangars. There are several advantages of steel trusses, such as lightweight, ease of handling and erection, and geometric flexibility. However, they have some drawbacks, such as high material and maintenance cost, and low fire resistance. In this paper, a precast concrete truss is proposed as an alternative to steel trusses for spans up to 160 ft. without intermediate supports. The proposed design is easy to produce and has lower construction and maintenance costs than steel trusses. The proposed design is ...


Precast Concrete Insulated Wall Panel Corbels Without Thermal Bridging, Mohamed Elkady Apr 2013

Precast Concrete Insulated Wall Panel Corbels Without Thermal Bridging, Mohamed Elkady

Construction Systems -- Dissertations & Theses

The common practice in corbel design is to block out the insulation in order to provide a solid concrete area at the corbel location. This connection practice results in thermal bridging, which significantly reduces the energy performance of the panel. For example, the PCI Design Handbook indicates that the reduction in thermal resistance caused by a solid part with an area equal to 9% of the total panel surface area is as high as 42%. This paper presents a discussion of a new concept for corbel design of insulated wall panels with the thermal break totally preserved. Two different designs ...


Trails As Transportation, Pete Fritz Mar 2013

Trails As Transportation, Pete Fritz

Purdue Road School

With populations concentrating in urban areas and the push for healthier living, biking and walking to work and other destinations are becoming more acceptable in the United States. With the ever-expanding network of trails in Indiana, the public is realizing the benefit of utilizing trails for daily commuting. This session will show what it takes for a community to embrace non-motorized commuters. We’ll also discuss the health and financial benefits of leaving your vehicle at home. Finally, we’ll get a statewide trails update from the Department of Natural Resources.


Climate Change Adaptation Chapter: Marshfield, Massachusetts, Joshua H. Chase, Jonathan G. Cooper, Rory Elizabeth Fitzgerald, Filipe Antunes Lima, Sally R. Miller, Toni Marie Pignatelli Feb 2013

Climate Change Adaptation Chapter: Marshfield, Massachusetts, Joshua H. Chase, Jonathan G. Cooper, Rory Elizabeth Fitzgerald, Filipe Antunes Lima, Sally R. Miller, Toni Marie Pignatelli

Sally Miller

Climate change, understood as a statistically significant variation in the mean state of the climate or its variability, is the greatest environmental challenge of this generation (Intergovernmental Panel on Climate Change, 2001). Marshfield is already being affected by changes in the climate that will have a profound effect on the town’s economy, public health, coastal resources, natural features, water systems, and public and private infrastructure. Adaptation strategies have been widely recognized as playing an important role in improving a community’s ability to respond to climate stressors by resisting damage and recovering quickly. Based on review of climate projections ...


Effect Of Confinement On Bond Strength Between Self-Compacting Concrete And Reinforcement, Marian Sabau, Traian Onet, Ana Ioana Petean Jan 2013

Effect Of Confinement On Bond Strength Between Self-Compacting Concrete And Reinforcement, Marian Sabau, Traian Onet, Ana Ioana Petean

Marian Sabau

Slippage of the beam reinforcement at beam–column connections is an important cause of damage of reinforced frames under static and dynamic loads. This paper presents the effects of confinement in self-compacting concrete (SCC), on the local bond stress vs. slip characteristics of deformed bars in reinforced concrete joints. Prismatic specimens with deformed steel bars embedded for a fixed length equal to three and five equivalent diameters were tested under monotonic loading. The specimens represented the confined region of a beam–column connection. The obtained results indicated that as far as the bond splitting cracks are restrained by reinforcing bars ...


Performance-Based Engineering Framework For Earthquake And Fire Following Earthquake, Aerik Carlton Jan 2013

Performance-Based Engineering Framework For Earthquake And Fire Following Earthquake, Aerik Carlton

Dissertations, Master's Theses and Master's Reports - Open

The objective for this thesis is to outline a Performance-Based Engineering (PBE) framework to address the multiple hazards of Earthquake (EQ) and subsequent Fire Following Earthquake (FFE). Currently, fire codes for the United States are largely empirical and prescriptive in nature. The reliance on prescriptive requirements makes quantifying sustained damage due to fire difficult. Additionally, the empirical standards have resulted from individual member or individual assembly furnace testing, which have been shown to differ greatly from full structural system behavior. The very nature of fire behavior (ignition, growth, suppression, and spread) is fundamentally difficult to quantify due to the inherent ...


Improved Modeling Of Residential Air Conditioners And Heat Pumps For Energy Calculations, Dylan Spencer Cutler Jan 2013

Improved Modeling Of Residential Air Conditioners And Heat Pumps For Energy Calculations, Dylan Spencer Cutler

Civil Engineering Graduate Theses & Dissertations

This thesis provides the capability for improved predictions of the annual energy use of residential air conditioners and heat pumps.The annual simulation engine - EnergyPlus - was used to evaluate the effects that manufacturers data has on predicted annual energy consumption. A new approach to modeling residential air conditioners and heat pumps (inside of the framework of EnergyPlus) was developed and is presented here. The new approach has updated system information and involves a reduced number of user inputs. This approach was also adjusted for use with the simulation engine, DOE-2.

To inform this research, manufacturer data was collected for the ...


Energy Model Creation And Calibration Procedures For A Residential Home Using Short Term Monitored Data, Christopher J. Wassmer Jan 2013

Energy Model Creation And Calibration Procedures For A Residential Home Using Short Term Monitored Data, Christopher J. Wassmer

Civil Engineering Graduate Theses & Dissertations

Calibrated energy models are used throughout the building science community for many different purposes. There are a number of publications and studies that describe calibration approaches and validation methods. The U.S. Dept of Energy Solar Decathlon program saw the need to develop detailed model creation and calibration procedures using monitored data of energy efficient residential buildings. This document contains detailed procedures and tools that use short term monitored data to create a customized EnergyPlus input file. A multi-step approach is developed that utilizes the data to calibrate the model. Several approaches to calibrating the building envelope are investigated and ...


Evaluation Of Thin Bonded Overlays As A Protective System For Highway Bridge Decks, Benjamin Lee Gallaher Jan 2013

Evaluation Of Thin Bonded Overlays As A Protective System For Highway Bridge Decks, Benjamin Lee Gallaher

Civil Engineering Graduate Theses & Dissertations

Chemical attack from chlorides, exposure to severe environmental conditions, and wearing from direct traffic loading causes highway bridge decks to deteriorate the fastest among all the structural components of a highway bridge. In an effort to better protect the bridge deck and reduce maintenance costs, State Departments of Transportation (D.O.T.) apply protective topical overlays to the bridge decks. The use of Thin-Bonded Overlays (T.B.O.) was investigated by the Colorado Department of Transportation (C.D.O.T) to gage three TBO's performance as an effective protection system. A polyester, an epoxy, and a methyl methacrylate were ...


Advancements To Performance-Based Earthquake Engineering Methods: From Building Code Provisions To Regional Loss Assessment, David Jared Debock Jan 2013

Advancements To Performance-Based Earthquake Engineering Methods: From Building Code Provisions To Regional Loss Assessment, David Jared Debock

Civil Engineering Graduate Theses & Dissertations

The essence of performance-based earthquake engineering (PBEE) is to design and assess structures to meet specific performance goals, rather than prescriptive requirements. This thesis applies PBEE methods to three problems: (1) evaluating the effectiveness of accidental torsion requirements for seismic design; (2) quantifying spatial correlations of building responses for regional seismic loss assessments; (3) developing and evaluating regional seismic loss assessment methodologies.

(1) Seismic ground motions induce torsional responses in buildings that are difficult to predict. To compensate for this, most modern building codes require the consideration of accidental torsion when computing design earthquake forces. This study evaluates the influence ...


Balancing Latent Heat Load Between Display Cases And Store Comfort Cooling, Penelope J. Cole Jan 2013

Balancing Latent Heat Load Between Display Cases And Store Comfort Cooling, Penelope J. Cole

Civil Engineering Graduate Theses & Dissertations

Supermarkets are the most energy intensive buildings in the commercial sector, and are responsible for approximately 54.5 billion kWh of electricity annually. Refrigeration makes up approximately half of this electricity use, with store temperature and humidity having a significant impact on this. Conditioned store air exchanges both moisture and heat with the refrigerated cases, and increases in store temperature and humidity impose higher loads on the refrigeration and cause sweating and frost.

Reducing the store humidity level has been shown previously to have a positive effect on the refrigerated case energy use, however dehumidification has an energy penalty on ...


Modeling And Testing Of A Liquid Desiccant Dehumidification System Regenerated With Solar Thermal Energy, Michael Andrew Hatt Jan 2013

Modeling And Testing Of A Liquid Desiccant Dehumidification System Regenerated With Solar Thermal Energy, Michael Andrew Hatt

Civil Engineering Graduate Theses & Dissertations

A computer simulation model for a liquid desiccant and PV/T system was examined in this thesis. The model was calibrated using data from an experimental system installed in Orlando, Florida, developed by the the National Renewable Energy Laboratory, in conjunction with several other companies. The experimental system uses a warm-air cross-flow absorber/regenerator and a 11.2kW PV/T array that provides hot air to regenerate the desiccant.

The data gathered from the experimental system was used to validate the accuracy of the PV/T array temperatures, along with the effectiveness of the desiccant and regenerator in the simulation ...


Influence Of Long Duration Ground Shaking On Collapse Of Reinforced Concrete Structures, Meera Raghunandan Jan 2013

Influence Of Long Duration Ground Shaking On Collapse Of Reinforced Concrete Structures, Meera Raghunandan

Civil Engineering Graduate Theses & Dissertations

This thesis aims to assess the influence of long duration shaking during earthquakes on structural collapse. It is well accepted that ground motion intensity and its frequency content affects structural seismic response; however, the influence of duration of ground shaking on structural damage remains a topic of debate. According to past research, duration of ground motion is found to influence structural damage when damage measures based on cumulative energy are used, and when the damage measures are based on maximum response, duration is generally found to be insignificant.

In the first part of the thesis, building models are subjected to ...


Fast Cfd Simulation Method For Indoor Environment Modeling, Haidong Wang Jan 2013

Fast Cfd Simulation Method For Indoor Environment Modeling, Haidong Wang

Civil Engineering Graduate Theses & Dissertations

Computational Fluid Dynamics (CFD) has been becoming an important tool in building environment and airflow modeling. Well validated CFD model can provide more detailed and informative results than other computer models and physical experiment. However, the significant computational cost of CFD has always been the main factor that restricting its broader application.

This study reviews the various means of reducing the computational cost of CFD in literature. With considering the characteristics and result accuracy requirement in indoor environment quality (IEQ) study, the most important factors that affect the computing cost are identified: grid resolution, turbulence modeling and velocity-pressure decoupling algorithm ...