Expedient Airfield Runway Repair Using Folded Fiberglass Mat,
2016
University of Nebraska-Lincoln
Expedient Airfield Runway Repair Using Folded Fiberglass Mat, Christopher Y. Tuan, Willaim C. Dass
Department of Civil and Environmental Engineering: Faculty Publications
For expedient airfield runway repair, the US Air Force has developed a folded fiberglass mat to cover craters repaired with a well-compacted granular base material. The objective of this study was to evaluate the adequacy of using polymer plugs to anchor the mat to a repaired asphalt pavement for heavy aircraft operations. The effort consisted of materials testing, field experiments and analytical modeling. An 89,800-kg (198,000-pound) load cart having the footprint of a single C-5 main gear was pulled on a mat with wheels locked to simulate full braking forces. Anchor bushings were instrumented to measure anchor loads. A simplified …
Bs News January/February,
2016
Technological University Dublin
Analysis Of Productivity In Dredging Project : A Case Study In Port Of Tanjung Perak Surabaya – Indonesia,
2015
World Maritime University
Analysis Of Productivity In Dredging Project : A Case Study In Port Of Tanjung Perak Surabaya – Indonesia, Tiggi P. Hardya
World Maritime University Dissertations
No abstract provided.
Use Of Personality Profile Assessments In The Construction Industry,
2015
Brigham Young University - Provo
Use Of Personality Profile Assessments In The Construction Industry, Brian Richard Childs
Theses and Dissertations
Various industries are using personality profile assessments as tools to help reduce employee turnover. Employee turnover is a continuing challenge in the construction industry that has negative effects on construction companies. Research found that it was difficult to know if companies in the construction industry are using personality profile assessments as a tool to help reduce employee turnover. After understanding that other industries were using personality profile assessments in their hiring, promoting, team building and leadership development to reduce turnover, it was desired to understand if the construction industry was doing the same. This research performed a survey among the …
Comparative Analysis Of Buckling-Restrained Braced Frames In Eccentric Configuration (Brbf-Es) And Eccentrically Braced Frames (Ebfs),
2015
University of Arkansas, Fayetteville
Comparative Analysis Of Buckling-Restrained Braced Frames In Eccentric Configuration (Brbf-Es) And Eccentrically Braced Frames (Ebfs), Peter T. Vayda
Civil Engineering Undergraduate Honors Theses
Continuing on the findings of “Using Buckling-Restrained Braced Frames in Eccentric Configuration,” by Dr. Gary S. Prinz, P.E., which determined that, from a performance standpoint, BRBF-Es could be a viable alternative for EBFs. A comparative analysis was conducted on the design procedures and initial cost estimates of BRBF-Es and EBFs. Upon designing four 12-Story buildings (two BRBF-Es and two EBFs), it was determined that BRBF-Es were easier to design due to the statically determinant system. The initial costs estimates of BRBF-Es; however, ranged upwards of 30% more cost than EBFs. Therefore, the initial investment of more intensive structural engineering design …
Subjective Perception Of Varying Reflection Densities In Room Impulse Responses,
2015
University of Nebraska-Lincoln
Subjective Perception Of Varying Reflection Densities In Room Impulse Responses, Hyun Hong
Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research
Reverberation time (RT) is a metric commonly used to describe room acoustic conditions, but different rooms which have the same reverberation time can have different reflection densities. Much less is known about how humans perceive different reflection densities and how sensitive humans are to changes in reflection density. Previous investigations in the existing literature have studied the upper limit of distinguishable reflection density using artificial impulse responses, but not with more realistic impulse responses simulated in room acoustic software or measured from real rooms. The aim of this dissertation is to investigate methods for quantifying reflection density from measured impulse …
Developing Key Performance Indicators To Measure The Effectiveness Of Early Facilities Management Performance On Bim Governed Public Sector Projects,
2015
Technological University Dublin
Developing Key Performance Indicators To Measure The Effectiveness Of Early Facilities Management Performance On Bim Governed Public Sector Projects, Barry Mcauley, Alan Hore, Roger West
Conference papers
Governments across the globe are now recognising the need to take steps to better manage their property portfolios due to the escalating costs of operating these buildings over their lifetime. This has seen them turn towards innovative work practices and technologies offered by Building Information Modelling (BIM). It is now becoming increasingly evident that BIM can bring significant added value to the design, construction and most importantly to the operational life of a public sector development project. This experience has resulted in a number of governments moving towards implementing BIM for all public works projects. BIM allows the building to …
The Application Of Industry Standards As An Alternative To In-House Proprietary Standards Within The Aec Iindustry,
2015
Grangegorman Development Agency
The Application Of Industry Standards As An Alternative To In-House Proprietary Standards Within The Aec Iindustry, Robert Moore, Alan Hore, Barry Mcauley
Conference papers
The move from traditional 2D Computer Aided Design (CAD) practices towards Building Information Modelling (BIM) has witnessed some practices trying to adopt and update their own in-house CAD standards. These standards are wholly inadequate for working in a collaborative BIM environment and mean that they repetitively create and recreate local, non-reusable, non-interoperable solutions to the same problems, which leads to the employees potentially having to learn a new collaborative process every time they have to work with a new project team. Collaborative standards help teams produce information through a standardised process, so as to ensure the same form and quality …
Collaborative Public Works Contracts Using Bim – An Opportunity For The Irish Construction Industry?,
2015
Technological University Dublin
Collaborative Public Works Contracts Using Bim – An Opportunity For The Irish Construction Industry?, Barry Mcauley, Alan Hore, Robert Kane, Simon Fraser
Conference papers
In Ireland, large and progressive contractors are claiming significant benefits in construction management efficiency through the implementation of BIM (Building Information Modelling). While these contractors note that the cost benefits to the project budget alone justify the implementation of BIM in the field, they are acutely aware that in 2011 the UK Government has mandated the construction industry in the UK to use BIM on all public projects by 2016. In the Republic of Ireland however, in 2007, the Government introduced the Public Works Contracts (PWC) suite for the procurement of all public sector works. After 8 years of working …
Ensuring That The Needs Of The End User Are Effectively Communicated Through Bim During The Building Design Stage,
2015
Technological University Dublin
Ensuring That The Needs Of The End User Are Effectively Communicated Through Bim During The Building Design Stage, Barry Mcauley, Alan Hore, Roger West, Louis Gunnigan
Conference papers
The Grangegorman Development Project is the largest single development of 3rd level education accommodation in the history of the Irish State. Planned for completion in 2023, it will relocate all of Technological University of Dublin’s (DIT) activities from their current 39 locations to a single campus. This is a once-off opportunity for DIT and it is therefore critical that the campus is designed to meet end-users’ needs. As part of the strategy to achieve this, it has been specified that all work packages within the campus must use Building Information Modelling (BIM) in the design, construction and the planning of …
Adopting Of Pas 1192-2 By Irish Aec Companies – A Formula For Winning International Work,
2015
Grangegorman Development Agency
Adopting Of Pas 1192-2 By Irish Aec Companies – A Formula For Winning International Work, Robert Moore, Alan Hore, Barry Mcauley
Conference papers
Forfás Ireland policy advisory board for enterprise, trade, science, technology and innovation have recently recommended that the Irish Architecture Engineering Construction (AEC) industry should engage in more international work and in doing so have advised the industry to work within a Building Information Management (BIM) environment, so as to avoid the possibility of a competitive disadvantage in overseas markets. According to Forfás BIM can help develop the appropriate technical skills amongst Irish construction firms so that they can successfully compete in markets where BIM is widely adopted or a requirement. More importantly they have encouraged the industry to strive to …
Bs News November/December,
2015
Technological University Dublin
Design Science: Choosing An Appropriate Methodology For Research In Bim,
2015
Technological University Dublin
Design Science: Choosing An Appropriate Methodology For Research In Bim, Dermot Kehily, Jason Underwood
Conference papers
This paper discusses Building Information Modelling (BIM) in relation to proposing design science as a methodology for BIM research. The paper firstly outlines how BIM is changing construction work practices to a more collaborative and integrated set of procedures, facilitated through the application of modelling technologies. The use of traditional research methods for BIM research in the context of developing and subsequently evaluating a BIM process or technology is then questioned. The premise of this rationale is that BIM revolves around new practices and emerging technologies that propose to provide efficiency in delivering constructed assets in the built environment. Traditional …
Building Codes To Minimize Cover Collapses In Sinkhole-Prone Areas,
2015
National Cave and Karst Research Institute
Building Codes To Minimize Cover Collapses In Sinkhole-Prone Areas, George Veni, Connie Campbell Brashear, Andrew Glasbrenner
Sinkhole Conference 2015
Cover- collapse sinkholes are forming with increasing frequency under buildings. Analyses of sinkhole distribution in Beacon Woods, Florida, preliminarily indicate their occurrence is an order of magnitude greater in urban versus undeveloped areas, suggesting the structures themselves are enhancing the collapse process. The most likely causes are induced recharge via at least one of two sources. First, runoff and drainage from roads, structures, and impoundments that is not adequately dispersed will promote sinkhole development. Second, leaking water, sewer, and septic systems beneath or adjacent to a structure will also promote collapse. The process of cover-collapse from induced recharge is well …
Photocatalytic Concrete Pavements: Laboratory Investigation Of No Oxidation Rate Under Varied Environmental Conditions,
2015
Dordt College
Photocatalytic Concrete Pavements: Laboratory Investigation Of No Oxidation Rate Under Varied Environmental Conditions, Joel K. Sikkema, Sae-Kee Ong, James E. Alleman
Faculty Work Comprehensive List
Concrete pavements containing TiO2 can be used for air pollution control by oxidizing NOX under UV-bearing sunlight. This study employed a bench-scale photoreactor to estimate NO oxidation rates for varied environmental conditions. Rates correlated positively with NO inlet concentration and irradiance and negatively with relative humidity. No correlation occurred with flow rate. A decrease in slab moisture (previously unstudied) positively correlated with NO oxidation rate at 0–2% loss of saturated mass, but negatively correlated at losses greater that 2%. Although prior researchers deemed temperature insignificant, data indicated a positive correlation. Overall, rates ranged from 9.8–64 nmol∙m-2∙s …
A Semantics-Based Approach To Construction Cost Estimating,
2015
Marquette University
A Semantics-Based Approach To Construction Cost Estimating, Mehrdad Niknam
Dissertations (1934 -)
A construction project requires collaboration of different organizations such as owner, designer, contractor, and resource suppliers. These organizations need to exchange information to improve their teamwork. Understanding the information created in other organizations requires specialized human resources. Construction cost estimating is one of the processes that requires information collected from several sources including a building information model (BIM) created by designers, estimating assembly and work item information maintained by contractors, and construction resource cost information provided by resource suppliers. Currently, it is not easy for computers to integrate the information for construction cost estimating over the Internet. This study discusses …
The Professional Constructor, Full Issue, Volume 39, Number 02,
2015
Clemson University
The Professional Constructor, Full Issue, Volume 39, Number 02
The Professional Constructor
No abstract provided.
Bs News September/October,
2015
Technological University Dublin
Comparisons Of Linear Regression Models For Properties Of Alkaliactivated Binder Concrete,
2015
Birla Institute of Technology and Science (BITS)
Comparisons Of Linear Regression Models For Properties Of Alkaliactivated Binder Concrete, Arkamitra Kar, Udaya B. Halabe, Indrajit Ray, Avinash Unnikrishnan
Civil and Environmental Engineering Faculty Publications and Presentations
Concrete with alkali-activated binder (AAB) is increasingly considered as a better alternative to conventional portland cement (PC) concrete due to its superior sustainable and green properties. In order to promote the practical usage of AAB concrete, a previous study by the present authors proposed models on correlations among their mechanical and nondestructive properties. The present study extends the previous knowledge by proposing new improved models using linear regressions to predict compressive strengths and modulus of elasticity from ultrasonic pulse velocities. The models are developed for both unstressed and stressed AAB concrete with different curing temperatures. The accuracies of the models …
Project Delivery Methods For The Construction Of Public Schools In The Southeastern United States,
2015
Clemson University
Project Delivery Methods For The Construction Of Public Schools In The Southeastern United States, Dennis C. Bausman
The Professional Constructor
Construction of new facilities is a risky enterprise due to the situational aspects of the project, multiple parties involved in the process, timing and budget constraints, and the design features and quality levels required by the owner. Decision makers are charged with selecting a project delivery system to successfully manage the design and construction process in order to meet the owner’s needs. This paper documents the delivery methods utilized for the construction of public schools in Florida, Georgia, North Carolina, and South Carolina from 2006 to 2012 and provides insight into the reasons for the delivery method selections made by …
