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Vulnerability Of Progressive Collapse In Reinforced Concrete Flat-Plate Buildings, Jinrong Liu 2013 University of Nevada, Las Vegas

Vulnerability Of Progressive Collapse In Reinforced Concrete Flat-Plate Buildings, Jinrong Liu

College of Engineering: Graduate Celebration

  • Progressive collapse is the spread of initial local failure, causing partial or
    even total collapse of a building.
  • Flat plate structure is widely used for office and residential buildings.
  • There is a large inventory of older flat plate building without continuous slab bottom reinforcement through columns.
  • Limited knowledge exists regarding the risk of disproportionate collapse in
    older flat-plates under sudden column removal during abnormal events.
  • Reliable mechanical model is needed for structural evaluation.


Developing A Standard Approach To The Value Engineering Process For The Civil Engineering Industry: A Theoretical, Case Study And Industry Perspective., Charles Anthony Mitchell 2013 Technological University Dublin

Developing A Standard Approach To The Value Engineering Process For The Civil Engineering Industry: A Theoretical, Case Study And Industry Perspective., Charles Anthony Mitchell

Conference papers

The original Value Engineering process developed in North America in the late 1940‟s, was primarily based on functional analysis. However; the North American Value Engineering process was not adopted in Europe. Instead various mixed methods were assembled under the umbrella term of Value Management. Nowadays there is much debate about what Value Engineering is and how is it defined? This question arises in part due to there being no standard approach in Europe as a whole in undertaking ValueManagement or Value Engineering exercises.With this in mind, Masters level research was undertaken from three perspectives (theory, case study and ...


Precast Concrete Insulated Wall Panel Corbels Without Thermal Bridging, Mohamed Elkady 2013 University of Nebraska

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 ...


Restoring The Richard's Cabin - Nevada City Living History Museum, Paul Hart 2013 Highlands College

Restoring The Richard's Cabin - Nevada City Living History Museum, Paul Hart

Posters

Highlands College Historic Preservation student, Paul Hart, enjoyed an internship in which he researched and accurately reconstructed parts of the Richard's Cabin at the Nevada City Living History Museum.


Assisting A Local Animal Shelter, J. J. Potvin, Jim Strande 2013 Highlands College

Assisting A Local Animal Shelter, J. J. Potvin, Jim Strande

Posters

Construction Technology students, JJ Potvin and Jim Strande assisted Pintler Pets, Montana's Anaconda-Deer Lodge Animal Shelter, with its recent major influx of feral cats by constructing a "lean to" addition to the building.


Students Helping Students, PJ Bonney, Tyler Cahoon, Tyson Dippold, Paul Hart, JJ Potvin, Jim Strande, Billy Walker, Keith West 2013 Highlands College

Students Helping Students, Pj Bonney, Tyler Cahoon, Tyson Dippold, Paul Hart, Jj Potvin, Jim Strande, Billy Walker, Keith West

Posters

A Montana Tech student was injured and his home needed to be made wheelchair accessible. Highlands College Construction Technology students designed and constructed an exterior ramp leading to the house as well as interior ramps between levels inside the house.


Multi-Objective Time-Cost Optimization Using Cobb-Douglas Production Function And Hybrid Genetic Algorithm, Zhigang Shen, Ashkan Hassani, Qian Shi 2013 New York University & University of Nebraska – Lincoln

Multi-Objective Time-Cost Optimization Using Cobb-Douglas Production Function And Hybrid Genetic Algorithm, Zhigang Shen, Ashkan Hassani, Qian Shi

Architectural Engineering -- Faculty Publications

Existing research on construction time-cost tradeoff issues rarely explore the origin of the crashing cost. Crashing cost function was either assumed without much justification, or came from historical data of some real projects. As a result the conclusions of the papers can hardly be used to guide allocations of labor and equipment resources respectively. The authors believe Cobb-Douglas function provides a much-needed piece to modeling the cost functions in the construction time-cost tradeoff problem during the crashing process. We believe this new perspective fills a gap of existing time-cost tradeoff research by considering project duration, labor and equipment cost as ...


Using Bayesian Networks To Assess The Risk Appetite Of Construction Contractors, David W. Cattell, P.E.D. Love 2013 Bond University

Using Bayesian Networks To Assess The Risk Appetite Of Construction Contractors, David W. Cattell, P.E.D. Love

David Cattell

The pricing of items of construction work using Component Unit Pricing (CUP) Theory requires that contractors have to assess and quantify their risk profiles. Those contractors with a willingness to take on greater risks can then be rewarded with a prospect of greater profits. CUP Theory provides a basis by which this can be accomplished by way of the manner and extent to which contractors spread their overall bid prices amongst all of the constituent component item prices. Conversely, this theory also facilitates that contractors who want to moderate their exposure to risk are able to do so, independently of ...


Quantum Man, Julian Voss-Andreae 2013 Claremont Colleges

Quantum Man, Julian Voss-Andreae

The STEAM Journal

According to quantum physics, the world is fundamentally quite different than it seems. Drawing inspiration from the underlying nature of reality, former quantum physicist Julian Voss-Andreae created an image of a walking human as a quantum object. Made up of parallel sheets of steel, the sculpture is a metaphor for the counter-intuitive world of quantum physics. Symbolizing the dual nature of matter with the appearance of classical reality on the surface and cloudy quantum behavior underneath, the sculpture seems to consist of solid steel when seen from the front, but dissolves into almost nothing when seen from the side.


Survey Of Suitable Plants For Cal Poly's Green Wall, Katrina Burritt 2013 California Polytechnic State University, San Luis Obispo

Survey Of Suitable Plants For Cal Poly's Green Wall, Katrina Burritt

Horticulture and Crop Science

Green wall technology is a growing industry in the United States and has been very successful for a several years throughout Europe. The objective of this survey was to study the success of several different species of plants on a vertical wall facing south at Cal Poly’s Horticultural Department Unit. At first the focus was aimed at using California native species, because it was thought that natives would be better acclimated to the exposure in this specific location. It became apparent that plants should not be selected for the wall based just on the fact that they are California ...


Structural Engineering Students For Haiti: A Student-Run, Student-Initiated Organization For The Benefit Of The Haitian People, Andrew Jimenez, Alex Daddow 2013 California Polytechnic State University - San Luis Obispo

Structural Engineering Students For Haiti: A Student-Run, Student-Initiated Organization For The Benefit Of The Haitian People, Andrew Jimenez, Alex Daddow

Architectural Engineering

On August 2nd 2012, a group of 10 students from Cal Poly, San Luis Obispo traveled to Léogâne, Haiti to construct a bell tower for the Saint Rose de Lima Parish. The trip consisted of four days of construction, and three days of touring. The seven days in Haiti were a result of three months of planning by a student-run, student-initiated group called Structural Engineering Students for Haiti, or SESH. The following report documents the planning, execution and lessons learned from this trip. The planning included everything from fund raising to disease prevention. The trip was successful because the bell ...


The Use Of Internships As A Work Placement Option On Quantity Surveying Courses In Light Of The Current Economic Downturn In The Irish Construction Industry, Fiacra P. McDonnell 2013 Technological University Dublin

The Use Of Internships As A Work Placement Option On Quantity Surveying Courses In Light Of The Current Economic Downturn In The Irish Construction Industry, Fiacra P. Mcdonnell

Other Resources

This research examines the concept of internships as a Work Placement option on undergraduate Quantity Surveying courses in light of the economic climate that prevails in Ireland at present. The Irish Construction Industry has experienced unprecedented decline over the last six years, with reduced employment prospects as a result. Graduates on construction related courses are having difficulties sourcing employment, and many feel that they are disadvantaged if they have not experienced work placement as part of their undergraduate course. The benefits of work placement as a mode of learning have been well documented, however this study explores work placement on ...


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

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 ...


Umass Amherst Green Building Guidelines 2013, Ludmilla Pavlova-Gillham, Ted Mendoza, Ezra Small, Patricia O'Flaherty, Nariman Mostafavi, Mohamed Farzinmoghadam, Somayeh Tabatabaee Pozveh 2013 University of Massachusetts - Amherst

Umass Amherst Green Building Guidelines 2013, Ludmilla Pavlova-Gillham, Ted Mendoza, Ezra Small, Patricia O'Flaherty, Nariman Mostafavi, Mohamed Farzinmoghadam, Somayeh Tabatabaee Pozveh

Campus Planning Reports and Plans

Facilities & Campus Services, Sustainable UMass and Campus Planning support sustainability and energy conservation initiatives by providing in-house resources to campus staff as well as designers and contractors working with the University. The UMass Amherst Green Building Guidelines provide a framework for approaching new construction and major renovation projects at UMass Amherst that are undergoing LEED certification by focusing the conversation on green building aspects that are most important to the campus. They are intended to be the beginning of a dynamic conversation between designers, environmental consultants and constructors, university stakeholders, and users of new high performance buildings.


Acoustic Tweets And Blogs: Using Social Media In An Undergraduate Acoustics Course, Lily M. Wang 2013 University of Nebraska - Lincoln

Acoustic Tweets And Blogs: Using Social Media In An Undergraduate Acoustics Course, Lily M. Wang

Architectural Engineering -- Faculty Publications

Each fall, the author teaches an undergraduate architectural acoustics course to around 40 third-year architectural engineering students at the University of Nebraska. Beginning in 2011, a social media component was introduced to explore the use of this technology and how it may supplement the students' learning experience. Students were given an opportunity to receive extra credit by using Twitter and/or blogging about course material using a set hashtag (#AE3300) or through the course website. Results were positive, and the author will discuss pros and cons that she has experienced in adding this social media component. Suggestions for future implementations ...


Effects Of Reverberation And Noise On Speech Comprehension By Native And Non-Native English-Speaking Listeners, Z. Ellen Peng, Lily M. Wang, Siu-Kit Lau, Adam M. Steinbach 2013 University of Nebraska-Lincoln

Effects Of Reverberation And Noise On Speech Comprehension By Native And Non-Native English-Speaking Listeners, Z. Ellen Peng, Lily M. Wang, Siu-Kit Lau, Adam M. Steinbach

Architectural Engineering -- Faculty Publications

Previous studies have demonstrated the negative impact of adverse signal-to-noise-ratios on non-native English-speaking listeners' performance on speech recognition using recall tasks, as well as implied that comprehension skills were more impaired than recognition skills under reverberation and noise. The authors have themselves previously conducted a pilot study on three native and three non-native Englishspeaking listeners to examine the effects of reverberation and noise using speech comprehension tasks. Those results suggested that speech comprehension performance is worse under longer reverberation times (RT), and that a longer RT is more detrimental to speech comprehension by non-native listeners than native listeners. This paper ...


Contractors' Competition Strategies In Bidding: Hong Kong Study, Yongtao Tan, Liyin Shen, Craig Langston 2012 Hong Kong Polytechnic University

Contractors' Competition Strategies In Bidding: Hong Kong Study, Yongtao Tan, Liyin Shen, Craig Langston

Craig Langston

Selecting an appropriate competition strategy in bidding is the ambition of most contractors. The multiple requirements of clients encourage contractors to consider other strategies to deliver additional benefits besides offering a low-price bid. Offering low bids will reduce contractors' profits and potentially make development less attractive. Contractors need to understand their specific resources that generate competitive advantage and accordingly develop strategies to win contracts. This paper reports the findings from a recent survey on competition strategies in the Hong Kong construction industry. Thirteen typical bidding strategies, their used frequency in bidding, and their effectiveness for winning contracts of different types ...


Construction Project Selection Using Fuzzy Topsis Approach, Young-tao Tan, Li-yin Shen, Craig Langston, Yan Liu 2012 Hong Kong Polytechnic University

Construction Project Selection Using Fuzzy Topsis Approach, Young-Tao Tan, Li-Yin Shen, Craig Langston, Yan Liu

Craig Langston

Purpose - The purpose of this paper is to introduce a quantitative method for assisting contractors to select appropriate projects for bidding by considering multiple attributes and integrating decision group member opinions.

Design/methodology/approach - The fuzzy technique for order preference by similarity to ideal solution (TOPSIS) method is used to help contractors make decision on project selection and the linguistic terms are defined for representing the triangular fuzzy numbers for ratings of alternatives and weights of criteria.

Findings - The selection of appropriate projects for bidding is a multiple attribute group decision-making exercise. In a real decision process, there are many ...


Bond Between Self-Compacting Concrete And Reinforcement, Marian Sabau, Traian Onet, Ioan Pop 2012 Universidad de la Costa

Bond Between Self-Compacting Concrete And Reinforcement, Marian Sabau, Traian Onet, Ioan Pop

Marian Sabau

This paper study the bond behaviour of self-compacting concrete (SCC) in comparison to normal vibrated concrete (NVC). In this paper are presented the following parameters: the influence of bar diameter, the influence of concrete quality, the top-bar effect, the influence of active and passive confinement. In literature, different test results are found for the bond strength in SCC, which deliver contradictory results, but internationally it seems to be agreed that bond strength in SCC is slightly higher than NVC.


Hardened Properties Of Self-Compacting Concrete, Marian Sabau, Traian Onet, Ana Ioana Petean 2012 Universidad de la Costa

Hardened Properties Of Self-Compacting Concrete, Marian Sabau, Traian Onet, Ana Ioana Petean

Marian Sabau

This paper presents the properties of hardened self-compacting concrete (SCC) and compare them to those reported for normally vibrated concrete (NVC). The mechanical properties evaluated are: compressive strength, modulus of elasticity, tensile strength, creep, shrinkage and bond with reinforcement. The very wide range of materials and mixes already used for SCC produced a significant scatter of data, but clear conclusions have been obtained. The compressive strength of SCC was likely to be the same or greater than that of NVC by using the same content of cement and water. Modulus of elasticity of SCC was lower than that of NVC ...


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