Architectural Engineering Commons^™

A Novel Structural Health Monitoring Method For Reinforced Concrete Bridge Decks Using Ultrasonic Guided Waves, Ece Erdogmus, Eric Garcia, Ahmad Shoaib Amiri, Michael Schuller

Durham School of Architectural Engineering and Construction: Faculty Publications

This article presents the latest improvements in a recently developed nondestructive testing (NDT) approach for early detection of various flaws (corrosion, delamination, and concrete cracking) in reinforced concrete (RC) bridge decks. The proposed method involves the use of internal steel reinforcement as a wave guide for transmitting ultrasonic waves through the system and the measurement of leaked energy from the surface of the concrete. This paper builds upon the progress made in the previously published phases of the project and aims to further explore the capabilities and practicality of the proposed NDT method. Specifically, the limits of propagation distance, effect …

Peak Pressures On Low Rise Buildings: Cfd With Les Versus Full Scale And Wind Tunnel Measurements, Aly Mousaad Aly, Hamzeh Gol-Zaroudi

Faculty Publications

This paper focuses on the processes of wind flow in the atmospheric boundary layer, to produce realistic full-scale pressures for the design of low-rise buildings. CFD with LES turbulence closure is implemented on a scale 1:1 prototype building. A proximity study was executed computationally in CFD with LES that suggests new recommendations on the computational domain size, in front of a building model, apart from common RANS-based guidelines (e.g. COST and AIJ). Our findings suggest a location of the test building, different from existing guidelines, and the inflow boundary proximity influences pressure correlation and reproduction of peak loads. The CFD …

Space In Transition: A Design Exploration Of A Transition Space In Ban Plainern, Tengzhou Feng

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis concerns a methodology to study transition spaces in traditional Thai houses. The author questions how to inherit and develop traditional architecture for the future generations. Transition spaces of Thai houses are chosen as the places to observe how materials, proportions, spatial compositions, light, shade and shadow affect architecture itself. They represent a relationship between man-made and nature with respect to environment, culture and time. Literature reviews are a supplement to the analytical methods to study architectural spaces and forms of Colin Rowe, Peter Eisenman, Le Corbusier and Juhani Pallasmaa. Then, the methodology is applied to analyse two case …

Analysis Of The Variability Of Project Cost And Schedule Performance In The Design-Build Environment, Yunping Liang, Baabak Ashuri, Wei Sun

Durham School of Architectural Engineering and Construction: Faculty Publications

Design-build (DB) projects are getting more implementations in the United States. Several studies indicate that the DB project delivery system has advantages in project cost and schedule performance. Despite having comparative advantages, DB projects are found to be far from immune from cost overruns and schedule delay in those studies. It is critical to understand the effects of various factors underpinning the cost and schedule performance of DB projects. The overall objective of this research is to utilize cluster analysis and statistical analysis to identify factors with significant potentials to describe the variability of project cost and schedule performance in …

Option Value Of Contingent Finance Support In Transportation Public-Private Partnership Projects, Yunping Liang, Baabak Ashuri

Durham School of Architectural Engineering and Construction: Faculty Publications

Uncertainties about construction cost and operational revenues are two major risks in transportation public-private partnership (P3) projects. These uncertainties put projects at risk of being unable to fulfill annual debt repayment obligations. When a project generates insufficient cash flow to service the debt in a certain year, it normally has to go for short-term financing by borrowing short-term loans. With the help of revenue risk-sharing mechanisms, supported projects may be able to get rid of unexpected interest disbursement. The objectives of this paper are twofold: (1) evaluate the refinancing cost of P3 highway projects caused by cash flow shortage and …

An Experiential Online Training Approach For Underrepresented Engineering And Technology Students, Arefeh Mohammadi, Kevin Grosskopf, John Killingsworth

Durham School of Architectural Engineering and Construction: Faculty Publications

Workforce pipelines are essential to sustain a productive workforce in an increasingly competitive, high-tech environment. Advanced automation, sensors, materials and data analytics will increase the need for highly skilled workers in the manufacturing (and manufactured construction) sector. Attracting and developing the next-generation workforce is not without its challenges; however, students are often deficient in technical skills and generally have negative perceptions about manufacturing and construction. As a result, new education and training models have been developed to provide instruction at all levels of the educational system, with a focus on both traditional students and non-traditional students, including ethnic minorities, women, …

Influence Of Pumping Pressure On The Viscosity Curve And Rheological Stability Of Mortar Incorporating Polycarboxylate, Jae Hong Kim, Seong Ho Han, Byoung Il Choi

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Concrete pumping has been successfully adopted in modern construction. Various concrete including high-strength concrete and self-consolidating concrete can be pumped, but we still have a lack of understanding of the rheological behavior and its change during the pumping process. This study evaluates the effect of pumping pressure on the viscosity curves of cement-based materials incorporating a specific polycarboxylate. The viscosity of mortar samples increases with the pumping pressure. The viscosity increase depends on the rate of shear strain and the polymer structure of the polycarboxylate. The effect of pumping pressure is then generalized with a Sisko model. A mechanistic model …

Impact Of Ambient Stable Stratification On Gravity Currents Propagating Over A Submerged Canopy, Jian Zhou, Subhas K. Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The structure and propagation of lock-release bottom gravity currents in a linearly stratified ambient with the presence of a submerged canopy are investigated for the first time using large-eddy simulations. The canopy density (i.e. The solid volume fraction), the strength of ambient stratification and the canopy height are varied to study their respective effects on the gravity current. Both denser canopies and stronger ambient stratification tend to switch the horizontal boundary along which the current propagates from the channel bed towards the canopy top (i.e. The through-To-over flow transition). It is found that the dilution of the current density is …

Can The Integration Of Bim And Gis Enhance Information Management For Large Scale Linear Infrastructure Projects?, Bim Tudublin, Brendan Kennedy

Capstone Reports

The integration of BIM and GIS is the subject of considerable research, particularly as the two coalesce for the purpose of information management. Large scale infrastructure projects require best practice in terms of how information is managed given the volume of information generated throughout the project lifecycle and the numerous parties requiring access to project content. This paper investigates whether the integration of BIM and GIS can enhance information management on large scale linear infrastructure projects. The research comprised a literature review and interviews with a number of BIM/GIS professionals actively working on linear infrastructure projects across the world. Some …

A Framework For Implementing Integrated Project Delivery In Architecture Design Firms In Egypt, Ayman Ahmed Ezzat Othman, Lamis Yasser Wagih Youssef

Architectural Engineering

Purpose

This paper aims to develop a framework for implementing the integrated project delivery (IPD) approach during the design process in architecture design firms (ADFs) in Egypt.

Design/methodology/approach

A research methodology consists of literature review, case studies and survey questionnaire was designed to achieve the abovementioned aim. First, literature review was used to identify and categorise the challenges of implementing IPD during the design process. Second, four case studies were analysed to investigate the values delivered to the client or missed due to the use of IPD or traditional procurement approaches, respectively. Finally, a survey questionnaire was carried out with …

Applying Lca-Bim Integration For A Sustainable Management Process, Ayman Ahmed Ezzat Othman, Dalia Morsi Ahmed Morsi, Walaa S E Ismaeel, Ahmed Ehab Abd El Hamed

Architectural Engineering

This work investigates the benefits of performing Life Cycle Assessment (LCA) using Building Information Modelling (BIM) techniques on a case study management process. This provides insights for reducing the environmental impacts of building materials and elements along the life cycle of a concrete residential project in Egypt. The study follows the LCA ISO 14040 and 14044 guidelines, local materials database, Revit modelling and One-Click LCA plugin. The result outlines that most of the environmental impacts occur during the operation and manufacturing phase. It also shows that slabs and beams result in most of the environmental loads. In terms of the …

Design Out Waste As An Approach For Achieving Sustainability In Egyptian Housing Projects, Laila Elsawaf, Ayman Ahmed Ezzat Othman

Architectural Engineering

Housing projects have been increasing rapidly during the previous years to fulfil community needs and achieve the national and international sustainable development objectives. Due to their nature, housing projects generate a significant amount of waste that accounts for approximately 40% of the solid waste that the construction industry generates annually. Many of these wastes are a result of inappropriate decisions adopted during the design process such as using non-sustainable materials and inefficient use of natural recourses. Meanwhile, research has revealed that achieving sustainability within housing projects is a crucial challenge, yet an essential one. This called to think differently and …

Flexible Design: An Innovative Approach For Achieving Sustainability In Primary Public Schools In Egypt, Yara Fahmy, Ayman Ahmed Ezzat Othman

Architectural Engineering

Public schools in Egypt are considered a valuable asset that should be preserved and sustained, as they play a paramount role for the development of a sustainable community. Whereas, currently, the schools in Egypt are not sustainable from social, economic and environmental perspective as they are generally heavy, fixed and normally irreversible once construction has been completed. This is due to the traditional construction method used in the construction of schools which consumes time and generates a vast amount of waste. In addition, the changing demands of the occupants may confront the need for future expansion or complete changeover. With …

Architectural Design Firms’ Social Role To Develop Sustainable Heritage Communities In Egypt, Dalia Elweshahy, Ayman Ahmed Ezzat Othman

Architectural Engineering

Cultural heritage buildings are a crucial element for future generations, as they preserve the cultural identity unique to where they are located. Moreover, they create one of the most dominant and memorable architectural achievement that have significant historical and cultural values. However, heritage buildings in Egypt suffer from a surge in demolition due to the deteriorated conditions of their surroundings areas, as well as, the maintenance of only the physical structures without considering the surrounding communities. Egypt constantly encounters many challenges such as poor coordination from the government due to shortage of skilled people, poor heritage awareness of local communities …

Divergent Heritage Sustainability: A Threefold Approach Through Lean Talent Management, Ayman Ahmed Ezzat Othman, Mohamed Hesham Khalil

Architectural Engineering

Purpose

This paper aims to investigate the role of lean talent management (LTM) as a novel approach for optimising creativity in architectural design firms (ADFs) towards achieving divergent heritage sustainability (DHS).

Design/methodology/approach

To achieve the abovementioned aim, a mixed qualitative and quantitative methodology is designed to accomplish three objectives. First, investigating the relationship between heritage and urban development; types of heritage and the role of LTM in enhancing creativity in ADFs. Second, presenting and analysing six heritage-related case studies to assess the need for creative solutions based on extent of deterioration in three different places in Egypt. Third, outlining the …

Achieving Sustainability Through Reducing Construction Waste During The Design Process: A Value Management Perspective, Ayman Ahmed Ezzat Othman, Sherouk Mohamed Abdelrahim

Architectural Engineering

Purpose:

The purpose of this paper is to investigate the role of Value Management towards achieving sustainability through reducing the construction waste during the design process.

Design/methodology/approach

To achieve the abovementioned aim, a research methodology consisting literature review and survey questionnaire is designed to achieve the following objectives: first, building a comprehensive understanding of the research topic through reviewing literature related to the nature of the construction industry, waste in construction, sustainability, the design phase and Value Management; second, presenting and analysing two case studies to validate the role of Value Management towards reducing waste in construction projects; third, conducting …

A Lean Talent Management Framework For Maximizing Creativity In Architectural Design Firms, Ayman Ahmed Ezzat Othman, Mohamed Hesham Khalil

Architectural Engineering

Being one of the creative industries worldwide, Architecture plays a significant role towards developing communities, fulfilling their needs and meeting their expectations. The divergence of societal problems and the complexity nature of projects called for creative and non-traditional solutions to address these problems and overcome complexities. Architectural Design Firms (ADFs) are responsible for achieving this mission, yet lack of motivation and demotivation acted as barriers for creativity. Recently, Talent Management (TM) was presented as an innovative approach for fostering creativity, balancing work-life commitments, enhancing motivation and reducing demotivation. However, lack of utilizing talented human capitals, which was counted as waste …

Impact Of Bi-Directional Loading On The Seismic Performance Of C-Shaped Piers Of Core Walls, Anahid A. Behrouzi, Andrew W. Mock, Dawn E. Lehman, Laura N. Lowes, Daniel A. Kuchma

Architectural Engineering

Reinforced concrete structural walls are commonly used as the primary lateral load resisting system in modern buildings constructed in high seismic regions. Most walls in high-rise buildings are C-shaped to accommodate elevators or other architectural features. C-shaped walls have complex loading and response including: (1) symmetric response in the direction of the web, (2) asymmetric response in the direction of the flange and (3) high compression and shear demands when used as a pier in a coupled-wall configuration. A research study was conducted on C-shaped walls tested under (1) uni-directional and (2) bi-directional loading of an isolated walls and (3) …

Biomimicry: Function And Aesthetic Of Vacation Home, Chonburi, Suparuek Techaborikiti

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis entitled 'BIOMIMICRY : FUNCTION AND AESTHETIC OF VACATION HOME IN CHONBURI' is an attempt to add an architectural element named fah lai (ฝาไหล literally translated as "flowing wall" popularly translated as "breathing wall") of Thai traditional house to the category of 'biomimicry'. This attempt is problematic because the term 'biomimicry' in architecture was invented in the 1990's much later than the Thai traditional houses. These two words, fa lai and biomimicry, belong to different cultures and different times. Moreover, the term 'biomimicry' itself has various interpretations. In this thesis, I will classify the uses of this word 'biomimicry' …

Sonic Architecture: Auditory Illusion Of A Visual Memory In The Shophouse 1527 For "A Lost Kitchen", Thanatchaporn Nateekulcharoen

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis is a study of sound in relation to a theory of "EVERYDAY LIFE." It is a supplement to Paul Connerton's view on architecture and memories written in a book entitled How Societies Remember. The ideas are that, first of all, objects, imageries, data can be converted to sound and vice versa. Secondly, sound is considered to be visual memories that exists in space and time. Lastly, it is possible to create a space of sound to exhibit a past life of a built environ. The intention of this study is to document the visual memories of the lost …