Construction Engineering Commons^™

A Review Of Approaches For Sensing, Understanding, And Improving Occupancy-Related Energy-Use Behaviors In Commercial Buildings, Hamed Nabizadeh Rafsanjani, Changbum R. Ahn, Mahmoud Alahmad

Durham School of Architectural Engineering and Construction: Faculty Publications

Buildings currently account for 30–40 percent of total global energy consumption. In particular, commercial buildings are responsible for about 12 percent of global energy use and 21 percent of the United States’ energy use, and the energy demand of this sector continues to grow faster than other sectors. This increasing rate therefore raises a critical concern about improving the energy performance of commercial buildings. Recently, researchers have investigated ways in which understanding and improving occupants’ energy-consuming behaviors could function as a cost-effective approach to decreasing commercial buildings’ energy demands. The objective of this paper is to present a detailed, up-to-date …

Use Of Fiber-Reinforced Cements In Masonry Construction And Structural Rehabilitation, Ece Erdogmus

Durham School of Architectural Engineering and Construction: Faculty Publications

The use of fiber reinforcement in traditional concrete mixes has been extensively studied and has been slowly finding its regular use in practice. In contrast, opportunities for the use of fibers in masonry applications and structural rehabilitation projects (masonry and concrete structures) have not been as deeply investigated, where the base matrix may be a weaker cementitious mixture. This paper will summarize the findings of the author’s research over the past 10 years in these particular applications of fiber reinforced cements (FRC). For masonry, considering both mortar and mortar-unit bond characteristics, a 0.5% volume fraction of micro fibers in type …

Failure Modes For I-Section Gfrp Beams, Mamadou Konate, Zia Razzaq

Civil & Environmental Engineering Faculty Publications

This paper presents calculations for the failure modes for I-section Glass Fiber Reinforced Polymer (GFRP) beams with single mid-span web brace. Theoretical predictions are made using ASCE-LFRD Pre-Standard for FRP structures. For the member length considered, it is found that for small and medium I-sections the failure mode is governed by lateral-torsional buckling and for bigger I-sections the failure mode is governed by material rupture. The outcome of the predicted lateral-torsional buckling mode is compared with that observed experimentally.

Higher Hourly Cost Compensation For Heavy Equipment Used In Demolition Activity, Mark Shaurette

Bowen School of Construction Faculty Publications

Demolition activity is increasingly dependent on heavy equipment as the primary means of dismantlement. This mechanized wrecking process qualifies as a severe working condition for the heavy equipment employed. Demolition practitioners note that the severe conditions encountered increase the operating cost of the equipment employed. There are occasions when unexpected project conditions or disaster response necessitate negotiated compensation for demolition services. In these negotiations, hourly cost references are utilized by contracting agencies to benchmark hourly billings. Supervising engineers recommend using the hourly values quoted in national cost references for standard construction services because no specific guidance for cost adjustment is …

Campus Planners' Preferences For Residence Hall Project Delivery Methods, Paul E. Riel

UNF Graduate Theses and Dissertations

This research determined the preferred project delivery method utilized by campus planners when building student housing on a university campus. Four key performance indicators were also evaluated to determine if they influenced the campus planner to select a particular project delivery method. The four key performance indicators were: owner input, cost, safety, and on-time completion. Campus planners identified though the Society for Campus and University Planners (SCUP), were invited to participate in this survey research method. Five research questions were explored in this study. They were:

1. What is the preferred project delivery method (PDM) when building a residence hall …

House As Mediator: Integrative Typology As Connector Between Land And Sea, Samantha Kudish

Architecture Thesis Prep

Rather than the water being an obstacle to coastal residential communities, water can act as an opportunity. Instead of barricading these areas from the water, integrating it with the area would create communities that are capable of living in unison with the ocean. This can introduce new typologies of housing that can withstand the continuing rise of sea levels. Blurring the line between land and sea by living with the sea will allow coastal regions to stay afloat, benefiting from ever-changing water conditions. A proposed new housing typology would introduce a new program to coastal neighborhoods, rather than putting up …

Engineer Manual 385 Effectiveness: A Study Of Predictive Analytics, Scott Arias

All-Inclusive List of Electronic Theses and Dissertations

Under the guidance of the United States Army Corps of Engineering Manual 385 (EM 385), the federal government has taken a stringent stance on construction safety. Using the mandated Occupational Safety and Health regulations and the 29 Code of Federal Regulation as a safety foundation, the EM 385 requires project-specific planning, continuous oversight and direct control of all safety activities. These mandates, required of every Department of Defense entity, focus on safety management not found within other federal agencies, in an attempt to reduce the number and severity of mishaps. This study looks for causation between the use of the …

An Environmental Value Engineering (Eve) Emergy Analysis Rubric To Compare High-Speed Passenger Rail And Interstate Passenger Car Transportation Alternatives Through A Fixed Distance, Joseph Threadcraft

All-Inclusive List of Electronic Theses and Dissertations

An Environmental Value Engineering (EVE) analysis was used to conduct an environmental life cycle assessment of transportation alternatives consisting of high-speed passenger rail and interstate passenger car transportation. This analysis was formulated on the EMERGY inputs of environment, fuel energy, goods, and services (labor). EMERGY input tables were calculated based on subsystem inputs for each mode of transportation. Areas of commonality were identified for analysis exclusion while aspects that showed differentiation were included as viable inputs into the calculation of the total EMERGY for each system. The summation of inputs resulted in an overall EMERGY calculation of the alternatives. Subsequently, …

The Effects Of Limestone Particle Size On Bone Health And Performance Of Pullets And Hens In Conventional Cage And Alternative Housing Systems, Pamela E. Eusebio Balcazar

Department of Animal Science: Dissertations, Theses, and Student Research

One of the major welfare issues in cage-free housing systems is bone fracture. The goal of this research was to improve bone health in layers by building better pullet skeletons and to investigate limestone particle size (LPS) effects on bone health in conventional cages and cage-free housing systems. Study 1 was a preliminary study that compared conventional cages with litter floor pens in terms of performance, bone health, and eggshell quality from 33 to 47 wk of age. Caged hens had higher egg production and eggshell strength, and improved feed efficiency, but lower tibia bone mineral content compared to floor …

Bs News November/December

Building Services Engineering

No abstract provided.

Ua66 Ogden College Of Science & Engineering Newsletter, Cheryl Stevens, Dean

Ogden College of Science & Engineering Publications

No abstract provided.

Bs News September/October

Building Services Engineering

No abstract provided.

Assessment Of Future Employment And Competency Skills In Building Information Modeling: A Delphi Study, Joseph A. Raiola Iii

All-Inclusive List of Electronic Theses and Dissertations

Many mainstream architecture, engineering, and construction (AEC) professionals are using Building Information Modeling (BIM). Although more and more firms are using BIM and this trend is forecast to continue, it is unclear what skills and competencies a construction manager will need in five years related to BIM. This research aims to answer that question through the use of a Delphi panel comprised of AEC professionals. The panel consists of members with the following qualifications: a minimum of eight years industry or academic experience or a combination of the two, a minimum of three years BIM experience, and membership in a …

Building Envelope For Energy-Efficient Residential Homes, A Case Study For The U.S. Department Of Energy Challenge Home Student Design Competition, Milica Tajsic

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the continuous rise of population and expansion of urban areas, the need for additional housing and infrastructure is growing rapidly. Building sector is consuming a vast majority of the natural resources to meet the needs of urbanization and is in need of efficient, sustainable solutions that are viable for the customer, the economy and the environment. The building sector is both the problem and the solution to the issues of the carbon footprint of our society (Architecture 2030, 2011).

The envelope (roofs, walls, and foundations) and windows typically account for 36% of overall energy use, or about 14.3 quads …

Coastal Defenses, U.S., Bert Chapman

Libraries Faculty and Staff Scholarship and Research

Provides an overview of U.S. military coastal defenses during the period up to and including the War 1812.

An Emerging Vocabulary: Architecture Of Performance, Jeremy H. Stock

Kaleidoscope

Re-chartered at the University of Kentucky in 2005, the Triangle Fraternity – a brotherhood of students studying Architecture, Engineering, and Sciences – now seeks to establish a visible presence by building a new fraternity house on-campus. To enable this investigation, professors Gregory Luhan, Peyman Jahed, and Bruce Walcott developed a design + energy studio experience that provided a framework for an integrated design team to use a systems-thinking approach to generate a range of scalable, net-zero energy prototypes. These prototypes can be applied in a variety of contexts and have the potential to address larger issues, such as energy efficiency …

Bs News July/August

Building Services Engineering

No abstract provided.

Cooperative Construction In Schools In California, John Mauck Donley

Master's Theses

Cooperative Construction in Schools in California

John M. Donley

The construction industry has lost efficiency since 1964, while becoming increasingly more litigious. Schools in California can ill afford the time to allow the construction industry time to fully evolve. It may take years or decades to fully improve the efficiency of, and reduce the conflict within the construction industry.

At the same time, the construction industry has developed new processes to improve efficiency and reduce conflict. These processes are beginning to be broadly embraced by the industry. They all contain cooperative elements. Taken together they represent a new organizing principle …

Multi-Criteria Decision Modeling For Best Value Selections In Target Value Design Integrated Project Delivery, Brent Patrick Griffis

Master's Theses

Integrated Project Delivery (IPD) combined with Target Value Design (TVD) is a better way to deliver value for the client than traditional guaranteed maximum price (GMP) methods. With traditional GMP delivery methods, the interests of the parties are often at odds. The goal of IPD is to align all party interests in order to achieve a win-win scenario. Due to the aligning nature of IPD and the fact that each party’s success is dependent on achieving the project objectives as a whole; a non-biased, transparent, decision-making process is necessary in order to deliver the project objectives within the constraints of …

Ua66 Ogden College Of Science & Engineering Newsletter, Cheryl Stevens, Dean

Ogden College of Science & Engineering Publications

No abstract provided.