Architecture Commons^™

Harmonics Elimination In Three Phase Cascade H-Bridge Multilevel Inverter Using Virtual Stage Pwm, Amro Quedan

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

The multilevel inverters are one of the great solutions that are proposed to satisfy the demand for high-power application and the significant integration of renewable energy. The conversion process from DC to AC must be done at high efficiency to decrease the energy loss and to ensure the electric grid power quality. The Total Harmonic Distortion (THD) is the most important feature that indicates the efficiency of the conversion process. In this research, due to the advantages of the cascade H-bridge inverter over other topologies, it has been used with the virtual stage PWM technique to investigate two different methods …

Garden Building Design Project, Gena Farley, Vanessa Villanueva, Jayanne Asuncion

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Robb Garden Community Resource Center, Jackie Koyama, Daryll Mendoza, Kourtnie Sicam

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Operation Bim: Robb Garden Building Project, Michael White, Daniel Seif, Suman Bhardwaj

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Robb Garden Building: Revit Up, Gimelle Jacala, Colin Strong, Jason Wu

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Robb Garden Building, Staysha Delgado, Lillian Sam, Ryan Teixeira, Courtney Vierra

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Robb Garden Building, Joseph Cliscagne, Joseph Prescott, Tamara Turton, Saima Uz-Zaman

Building Information Modeling Final Projects

Final project from the EMGT 193/293 Building Information Modeling (BIM) course in the School of Engineering and Computer Science as part of the Bachelor of Science in Engineering Management degree. A student group designed and modeled a one-story building to house the Pacific Garden Program on campus.

Stewardship Of International Bim Programmes: Lessons For Ireland, Barry Mcauley, Alan Hore, Roger West, Shiyao Kuang

Conference papers

The support by central government of national Building Information Modelling (BIM) programmes is common throughout the developed world today. To further understand how the different international governments have supported their BIM programmes the BIM Innovation Capability Programme (BICP) research team in Ireland recently completed a comprehensive Global BIM Study to help inform the National BIM Council (NBC) of Ireland in developing a Roadmap to Digital Transition for Ireland’s Construction Sector. This paper details the findings of a more concentrated investigation on a selection of jurisdictions on how particular international BIM programmes are orgainsed, managed and the level of governmental support …

Measuring Walls In Accordance With Arm4 - An Introductory Demonstration, Tony Cunningham

Other Resources

This demonstration involves the measurement of 'traditional' external brick and block cavity walls and internal block partitions. The demonstration is addressed to students taking (Irish) measurement or quantities modules at first year / entry level of quantity surveying related programmes. The worked example has been carried out using traditional handwritten quantity surveying processes on traditional dimension paper. It is acknowledged that this would be carried out using measurement software or on-screen measurement technology in actual practice. The traditional handwritten approach has been retained in order to enable novice students to develop the necessary measurement skills and build confidence through direct …

What Lessons Can Be Learned From The Delivery Of The First Building On The Grangegorman Campus Using Building Information Management (Bim)?, Pat O'Sullivan, Avril Behan

Conference papers

There is an acceptance that BIM, via data management, can be integrated with FM to reduce costs during the Operations and Maintenance stage of a project. However, what has not been documented is the ‘on the ground’ reality which can be reviewed as a lessons learnt exercise to improve the implementation of BIM FM for future projects. This case study sets out to explore the realities of a client’s adoption of BIM based upon the actual experience of the Greenway Hub. Rather than relying on anecdotal evidence the research was based upon the real practices and experiences of the Dublin …

Valuing Variations In Accordance With The Principle Irish Standard Forms Of Building Contract – Worked Examples And Solutions, Tony Cunningham

Other Resources

Given the nature of the construction process some change is almost inevitable. Standard forms of contract, therefore, cater for such change by including provisions which permit variations and alterations to the works. Variations may range from small inconsequential changes to major revisions which can delay and disrupt the completion to the project and place the project budget under considerable stress.

Establishing a realistic valuation for variations is not always a straightforward task. Even apparently simple changes can have significant unexpected consequences on project outcomes. This study examines how the valuation of variations may be carried out in accordance with the …

The Automation Of Bim For Compliance Checking: A Visual Programming Approach, Jonathan Reinhardt, Malachy Mathews

Conference papers

A study by FIATECH confirmed that human interpretation causes inconsistencies in applying building compliance & regulations (Solihin & Eastman, 2015). Producing, updating and quality assuring such processes is inconsistent and unreliable (Preidel & Borrmann, 2016). A barrier to interpretation of building regulations is that software is designed by developers that are separate to local authorities (Solihin & Eastman, 2015). The current literature suggests Singapore, Norway, USA & Australia have all implemented BIM automation systems for building regulations. This study reviews current automation systems and based on this proposes a system of creating a checking system is efficient in the control …

Measuring Rheological Properties Of Cement Pastes: Most Common Techniques, Procedures And Challenges, Dimitri Feys, Rolands Cepuritis, Stefan Jacobsen, Karel Lesage, Egor Secrieru, Ammar Yahia

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Science of Rheology is Increasingly Used to Describe the Properties of Fresh Cement Paste. Compared to Standard Workability Tests, Rheological Properties Allow for More Fundamental Investigation, More Precise Phenomenological Description of Flow Properties and Serve as Input for Numerical Simulations. Standard Commercially Available Rheometers Are Typically Used to Perform Those Measurements. However, the Results of the Measurement Depend on the Geometry, Testing Procedure and a Number of Potential Artefacts. This Technical Letter Describes the Most Common Techniques and Procedures Used to Assess the Rheological Properties of Cement Paste, as Well as Challenges during Measurements and Actions to Counter These …

Bim+Blockchain: A Solution To The Trust Problem In Collaboration?, Malachy Mathews, Dan Robles, Brian Bowe

Conference papers

This paper provides an overview of historic and current organizational limitations emerging in the Architecture, Engineering, Construction, Building Owner / Operations (AECOO) Industry. It then provides an overview of new technologies that attempt to mitigate these limitations. However, these technologies, taken together, appear to be converging and creating entirely new organizational structures in the AEC industries. This may be characterized by the emergence of what is called the Network Effect and it’s related calculus. This paper culminates with an introduction to Blockchain Technology (BT) and it’s integration with the emergence of groundbreaking technologies such as Internet of Things (IoT), Artificial …

Perception Of Spatial Impression Due To Varying Positions Of The Source On Stage, Sungbeen Cho

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

The listener’s surrounding environment affects the perception of sound. The environment includes physical factors such as space size, shape, and finish materials, and psychological factors such as individual difference of impression, and vision. Acoustic spatial impression can be defined as the concept of the type and size of space at which a listener arrives spontaneously when he/she is exposed to an appropriate sound field. This thesis analyzes how physical factors in enclosed spaces affect the acoustic spatial impression, and how sound sources at different positions on stage are perceived in different shapes of spaces.

First, existing spatial impression parameters, IACC …

Hyperelastic Structural Fuses For Improved Earthquake Resilience Of Steel Concentrically-Braced Buildings, Francys López-Mosquera

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Improving structural resilience (i.e., reducing service interruptions and improving rapidity of function restoration) following extreme events is one of the primary contemporary challenges in structural engineering. While massive casualties have successfully been avoided through the adoption of modern building codes, the sole codified performance objective has been limited to the life safety/collapse prevention range of response. Christchurch, NZ, highlighted the insufficiency of this approach, with large sections of the city nonfunctional after a major earthquake, and with subsequent collapses induced by significant aftershocks. Engineering advances to improve building and community resilience are necessary to mitigate hazards from becoming disasters. This …

Bim Innovation Capability Programme Of Ireland, Barry Mcauley, Alan Hore, Roger West

Conference papers

The Irish Government has requested that Enterprise Ireland, an organisation responsible for the development and growth of Irish enterprises in world markets to actively promote the use of BIM in Ireland. This promotion has taken the form of an opportunity for Enterprise Ireland clients to apply for a grant under their BIM Enable and BIM Implementation schemes and also through their funding of the BIM Innovation Capability Programme (BICP) of Ireland. The BICP is a two-year project (2016-2018) which seeks to capture the capability of the Irish Construction Industry and the Higher Education Institutes to respond to the increased requirement …

A Feasibility Investigation Of Modular Portable “Chelson Shelters” Micro-Homes To Alleviate Housing Deficiencies: A Case Study In Mithi, Tharpakar, Pakistan, Muhammad Usman Ghani

Masters Theses & Specialist Projects

Many people in Mithi, Tharparkar do not have proper housing, face an unhygienic water supply, and have no sanitation facilities. These factors contribute to disease, suffering and the inability to rise above their destitute existence. The idea for building portable houses for the people of Mithi is presented to provide them with better living conditions and where they can feel a sense of security, ownership and sanitation. Research on existing building systems and materials showed that the most feasible structure for the desert environment is modular panels attached to a core unit that contains all the basic plumbing and electrical …

The Prevalence Of Six Sigma Trends In The Construction Industry In Pakistan, Muhammad M. Hassan

Masters Theses & Specialist Projects

Economic development in any country or area depends heavily on the performance of the construction industry. This is because the subsequent development of infrastructure increases economic activity, living standards, direct foreign investments, and business opportunities. The construction industry in Pakistan also plays a significant role in its economic activity, and the government’s focus towards increasing infrastructure development provides the construction industry with growth prospects. It is observed that quality management practices in the Pakistan construction industry are highly inadequate to enhance quality. The construction industry there is highly challenged with inadequate delays in projects and project quality. The need for …

Examination Of Leed Certified Building’S Electricity Usage, Nasim Amiri

Masters Theses & Specialist Projects

The number of buildings seeking LEED certification has been growing steadily over the past few years. In this study, three academic buildings which were designed and built to LEED certification standards were targeted in Bowling Green, Kentucky. Their electricity consumption and cost effectiveness were examined and compared with predesigned LEED efficiency models of those three buildings. This research directly examined cost effectiveness of LEED buildings in terms of electricity usage. Three case studies were completed to find the initial and on-going electricity costs of LEED buildings and to verify the LEED standard results. LEED aspects of these buildings were discussed …

Shower Atomization, Chirag Ayappa Ravishankar,

Masters Theses & Specialist Projects

The research will help to design a shower for Dr. Chelson’s shelter, which can control the water flow, pressure and duration of the shower, which optimizes the utilization of water. The showers could be used in drought-hit areas where water is very scarce, as daily sanitation needs are necessary to keep a person safe and healthy without wasting water. The report from, World Health Organization shows that showers consume the most water. A timed shower could help resolve this issue through eliminating the wastage. Eco-friendly environmentalists may also be attracted to the showers, as their main purposes are to save …

Holistic Interdisciplinary Design - Everyone Does Everything (Engineering Students As Sculptors), Craig Baltimore, Allen C. Estes

Architectural Engineering

The ability to offer students an interdisciplinary experience under a team work setting is invaluable in preparation for a career in the built environment. A hands-on approach coupled with a real project presents unique opportunities in student learning. Learning in regards to the dynamics of team personalities, deadlines, approval procedures, and deliverables. One such hands-on based real project was to design, build, and install an 800 lb., 20 ft. long, and 10 ft. tall sculpture. The sculpture was to be built of recycled steel of a mustang in 10 weeks for the University’s library Spring 2016 exhibit. The project gave …

Motivating And Investing In The Freshmen: Paving The Way For The Future, Allen Estes, John Lawson

Architectural Engineering

This paper describes an introductory freshman experience course, “Introduction to Building Systems” that was seven years in the making and meets several critical goals for this engineering department. As one of their very first courses, this two-unit course is taken in the Fall quarter by every incoming freshman, which translates into an annual enrollment of 50 to 120 students, depending on the year. Meeting twice a week, the first meeting is in a large lecture format where all of the students are together and are introduced to the topic for the week which includes structural systems, timber, concrete, steel, earth/foundations, …

Developing A Robust Teaching Portfolio As A Doctoral Student In A Research-Intensive Engineering Program, Anahid A. Behrouzi

Architectural Engineering

Successful faculty applications to teaching/undergraduate institutions can be difficult for doctoral students transitioning directly from a research-intensive engineering program. Oftentimes, these prospective faculty members have limited opportunities to engage in engineering education research, to serve as a primary instructor for a lecture course, or to receive adequate mentoring to prepare them for the environment of a teaching/undergraduate institution.

This paper will highlight the lessons learned by a new faculty member at a top-ranked undergraduate institution (and recent doctoral candidate at a R1 research institution) about how students can build a comprehensive teaching portfolio outside of the traditional coursework and research …

Gas Collection, Haorong Li, Yanshun Yu, Daihong Yu

Durham School of Architectural Engineering and Construction: Faculty Publications

A system includes a vessel configured to couple with a gas source for drawing gas into the vessel. The vessel is also configured to receive liquid. The system includes an over flow port in fluid communication with the environment external to the vessel. The overflow port is configured to separate gas within the vessel from the external environment. The system also includes an overflow conduit having an end within the overflow port so that when gas pressure within the vessel increases, liquid is received by the over flow conduit. Another system includes a tank defining an air space for receiving …

Experimental And Numerical Investigation Of Flexural Concrete Wall Design Details, Anahid A. Behrouzi, T. Welt, Dawn Lehman, Laura Lowes, J. Lafave, Daniel Kuchma

Architectural Engineering

Reinforced concrete structural walls are common in mid- to high-rise structures in high seismic regions, and are expected to have good strength and ductility characteristics if designed in accordance with ACI 318-14. However, experimental and analytical investigations of reinforced concrete structural walls and isolated boundary element prisms indicate that the existing design provisions may be insufficient to provide ductile, flexure-dominated response under cyclic loading. Walls designed with an ACI compliant boundary element length are susceptible to shear-compression failures below the maximum ACI allowable shear stress of 10Acv√fc’. Also of concern is the frequent use of thinner walls in modern design; …

Wall Panel Optimization For Refugee Shelters In Germany: An Ahp Study, Zhu Jiadong

Masters Theses & Specialist Projects

The German government is experiencing difficulties housing and assimilating Syrian refugees in its borders. Erecting temporary shelters on location is one way to deal with the current crises. This thesis attempts to use Analytic Hierarchy Process (AHP) to determine the optimum combination of materials and construction methods to be used in the shelter’s walls in order to improve the living conditions of the refugees and to ensure that the cost is acceptable to the German government. This thesis compares six existing wall panel products from China, which have the lowest cost on the worldwide market. The R-value, strength, price, weight, …

How Tonality And Loudness Of Noise Relate To Annoyance And Task Performance” Noise Control Eng. J. 65(2), 71-82., Joonhee Lee, Jennifer M. Francis, Lily M. Wang

Durham School of Architectural Engineering and Construction: Faculty Publications

Audible tones in noise generated by building mechanical equipment can be a leading cause of complaints from occupants. A number of metrics have been developed to quantify prominence of a tone, but previous work has shown that the impact of a certain tonality appears to vary with the level of the broadband noise signal. More work on how tonal signals of varying tonality, tone frequency and broadband noise levels relate to annoyance and task performance is needed. This paper investigates such relationships between current noise metrics, annoyance and task performance under assorted tonal noise conditions through subjective testing. Participants rated …

Irish Bim Study 2017, Barry Mcauley, Alan Hore, Roger West

Articles

The Construction IT Alliance (CitA) recently published its Global BIM Study as part of its BIM Innovation Capability Programme (BICP). The study sought to identify how BIM was being currently addressed in 27 countries across the globe. The study sought to identify the presence of three key ingredients in these countries:

1. Regulatory requirement for BIM

2. Champions driving BIM

3. Noteworthy publications

The report identified a number of recurring themes that would help to shape Ireland’s BIM programme. The report concluded that Ireland should adopt a programme of partnership between industry and the Irish Government in order to affect …

Bicp Global Bim Study - Lessons For Ireland’S Bim Programme, Barry Mcauley, Alan Hore, Roger West

Reports

The Construction IT Alliance (CitA) has been promoting the benefits of digitisation in the construction and engineering industry in Ireland since its formation back in 2002. Whilst the Alliance has always strived to ensure that its members are exposed to a wide spectrum of contemporary digital tools and processes, the concept of Building Information Modelling (BIM) has dominated the focus of its activities over the past five years.

BIM can be described as a digital tool that facilitates everybody to better understand a building or structure through the use of a digital model which draws on a range of data …