Open Access. Powered by Scholars. Published by Universities.®

Construction Engineering and Management Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1981 - 2010 of 4479

Full-Text Articles in Construction Engineering and Management

Case Study Of Real-World Emissions Rates Verus Epaemission Standards For Motor Graders, Boshra Karimi, Phil Lewis Mar 2021

Case Study Of Real-World Emissions Rates Verus Epaemission Standards For Motor Graders, Boshra Karimi, Phil Lewis

The Professional Constructor

Using the Volkswagen emissions scandal as motivation, the purpose of this case study was to investigate whether or not heavy-duty diesel construction equipment exceeds EPA emissions standards for nonroad diesel engines. The equipment analyzed included four separate motor graders with EPA emissions standards Tier 0, Tier 1, Tier 2, and Tier 3 engines. The analysis was based on a dataset of real-world emissions rates collected from in-use equipment on actual jobsites. The results showed that mass per time emissions rates for hydrocarbons, carbon monoxide, nitrogen oxides, and particulate matter decreased as the EPA emissions standards became more stringent. Furthermore, there …

Go to article

Understanding Sub-Contractor Selection Factors In Thebuilding Construction Industry For The Southeastern United States, Dhaval Gajjar, Cayla Anderson Mar 2021

Understanding Sub-Contractor Selection Factors In Thebuilding Construction Industry For The Southeastern United States, Dhaval Gajjar, Cayla Anderson

The Professional Constructor

The primary entities within building construction industry consists of the owner, the architect / engineer, and the general contractor, that ensure the success of any construction project. On a traditional project, the owner selects and contracts with the general contractor to construct a building designed by the architect. A considerable amount of research has been conducted to understand the owner’s selection factors to hire a qualified general contractor. However, the general contractor selected for the project seldom self-performs the entire construction of a building. The general contractor might self-perform some aspects of the actual building construction, but they will typically …

Go to article

Case Study: Infection Control On The Arroyo Grande Community Hospital Emergency Room Expansion And Remodel Project, Daniel E. Romero Mar 2021

Case Study: Infection Control On The Arroyo Grande Community Hospital Emergency Room Expansion And Remodel Project, Daniel E. Romero

Construction Management

California hospital and healthcare projects typically involve California’s Office of Statewide Health Planning and Department (OSHPD) which is governed by the state of California and the Fire Marshal. Along with OHSPD as the governing organization, healthcare and hospital projects often must incorporate infection control practices. The Arroyo Grande Community Hospital Emergency Room Expansions and Remodel project incorporated infectious control practices. Qualitative research was conducted through semi-structured interviews of the project management team along with primary and secondary sources. The tools and practices used on this project included negative air machines, temporary walls with sound barriers, zip walls with fire rated …

Go to article

The Use Of Virtual Reality In Construction Safety Training, Matthias S. Guegler Mar 2021

The Use Of Virtual Reality In Construction Safety Training, Matthias S. Guegler

Construction Management

The emergence of virtual reality has seemingly limitless possibilities in the construction industry. One of the most significant applications of this technology in construction, is its use in virtual reality safety training, as it allows for more immersive and retainable training programs. Construction VR training programs have been developed to allow workers to train in a safe working environment and develop the necessary skills in recognizing hazardous jobsite situations. The purpose of this study is to measure the effectiveness and potential of virtual reality construction training as it compares to traditional industry training through attitudinal research. To this end, a …

Go to article

Bilingual Training Course For Redwood Residential Fence Company, Adriana Bernabe Martinez Mar 2021

Bilingual Training Course For Redwood Residential Fence Company, Adriana Bernabe Martinez

Construction Management

The Hispanic population has been increasing in the US over the past twenty years, and made up 42.9% of the construction workforce in 2018 (Data USA, n.d.). Because of this population increase, it’s expected that 1 in 4 persons will be of Hispanic descent by the year 2050 (Canales, 2009). Due to this increase, many language barriers exist that can create serious issues in construction. Language barriers cause productivity to decrease and increase concerns for the workers’ safety. Although OSHA trainings are available in Spanish, the opportunity to take these courses vary from company to company and it is rare …

Go to article

Decision Model For Additive Versus Conventional Construction In Remote Locations, Matthew R. Nicholson Mar 2021

Decision Model For Additive Versus Conventional Construction In Remote Locations, Matthew R. Nicholson

Theses and Dissertations

Additive construction is a potential game changing innovative alternative to conventional methods with regards to structural integrity, timeliness, and waste reduction, especially in remote locations. While there have been numerous studies into the material science, additive construction will not be a viable alternative until a cost analysis is performed. This paper details the cost elements for both methods. Breaking down the key variables of material, logistics and transportation, and labor costs garner a better understanding of the cost difference between the two construction methods.

Go to article

Developing Infrastructure Adaptation Pathways To Combat Hurricane Intensification: A Coupled Storm Simulation And Economic Modeling Framework For Coastal Installations, Alexander J. Baldwin Mar 2021

Developing Infrastructure Adaptation Pathways To Combat Hurricane Intensification: A Coupled Storm Simulation And Economic Modeling Framework For Coastal Installations, Alexander J. Baldwin

Theses and Dissertations

Climate change projections suggest intensification of extreme weather events, including hurricanes, is expected throughout the 21st century. This will lead to increased destruction for coastal military bases unless infrastructure resiliency and adaptation measures are implemented. This research focuses on examining the simulation of probabilistic, climate-intensified hurricane events at Eglin Air Force Base. FEMA Hazus models are combined with climate projections for wind Intensity, tide, and sea-level rise to produce an assessment of losses to the installation. Damage estimates and hurricane intensity outputs are downscaled to the facility-level so that climate adaptation signals can be identified. The facility losses and climate …

Go to article

An Empirical Analysis Of Dod Construction Task Order Performance, Adam B. Teston, Tyler S. Stout Mar 2021

An Empirical Analysis Of Dod Construction Task Order Performance, Adam B. Teston, Tyler S. Stout

Theses and Dissertations

Cost and schedule overrun plague over 50 of all construction projects, engendering diminished available funding that leads to deferred maintenance and impaired award ability for needed projects. Though existing research attempts to identify overruns sources, the results are inconclusive and frequently differ. Accordingly, this research reviews DoD construction contract data from the past ten years to identify the contract attributes of 79,894 projects that correlate with superior performance for use in future project execution. This research starts with creating a database that houses the largest single source of construction contract information. The research then evaluates the data to determine if …

Go to article

The Effects Of Covid-19 On A Commercial Construction Company: A Case Study, Dylan Reynolds Mar 2021

The Effects Of Covid-19 On A Commercial Construction Company: A Case Study, Dylan Reynolds

Construction Management

The COVID-19 pandemic of 2020 and 2021 resulted in many states issuing stay-at-home orders and closing businesses. In some states, construction was deemed essential and allowed to remain open. Dempsey Construction, Inc. is a Southern California commercial construction company that was permitted to continue operation with the exception of a brief lockdown in March and April of 2020. Despite being permitted to remain open, the company had to face many direct and indirect challenges resulting from the worldwide pandemic. In addition to schedule adjustments, daily cleaning on jobsites and in the office, and increased material prices and lead times, Dempsey …

Go to article

Best Practices For Bridge Crane Implementation And Installation: A Case Study, Sterling D. Treloar Mar 2021

Best Practices For Bridge Crane Implementation And Installation: A Case Study, Sterling D. Treloar

Construction Management

Overhead Cranes, which are more commonly referred to as bridge cranes, provide a substantial amount of flexibility with respect to the user’s ability to move material and heavy equipment throughout a factory or manufacturing facility. Oftentimes, the client is not aware of the benefits of implementing bridge cranes rather than using mobile gantry cranes. The client may not be aware of the benefits of bridge crane installation occurring at the beginning of a project or in fact, including it in the initial design of the project, rather than considering it in the middle of the project. This case study will …

Go to article

Los Angeles Homeless Epidemic - An Analysis Of Proposition Hhh, Howard T. Duong Mar 2021

Los Angeles Homeless Epidemic - An Analysis Of Proposition Hhh, Howard T. Duong

Construction Management

Passed in 2016, Proposition HHH is a $1.2 billion bill hoping to curb the homelessness epidemic that is rising in the city of Los Angeles with the newly added construction of 10,000 supportive housing units. This study serves to analyze and detail the homelessness epidemic in the Los Angeles Area, familiarizes the reader with how Proposition HHH funding works together with developers, as well as some of its shortcomings to date so far. To garner additional research, a survey was performed with a sample size from both the developers engaged with Proposition HHH and residents of the product in order …

Go to article

Risk Management In Response To Covid-19: Comparative Case Study, Justin Hong Mar 2021

Risk Management In Response To Covid-19: Comparative Case Study, Justin Hong

Construction Management

The COVID-19 pandemic has affected many aspects of the construction industry. Construction industry members such as owners, developers, subcontractors have experienced varying degrees of impacts because of COVID-19. It is important for companies to adopt risk management strategies to mitigate risk and reduce potential injuries. Due to new rules and regulations mandated by the government, companies had to change the way they operate. This comparative case study focuses on how the pandemic has affected large and small residential companies and compare the risk management strategies set in place by different companies. It was determined that most residential companies were not …

Go to article

Field Welding Repair Of Heavy Equipment, Phil Akahori Mar 2021

Field Welding Repair Of Heavy Equipment, Phil Akahori

Construction Management

Welding repairs of heavy equipment in the field can vary in levels of success. This can be due to the high strength steels used in the manufacture of heavy equipment implements that require special metallurgical considerations. Repair difficulties can be further compounded by the limitations of tooling typically found on a construction site and schedule commitments. Overloading or excessive impacts can cause damage to the bucket teeth of an excavator or bulldozer rippers. A shop could perform a proper repair but that increases cost and takes precious time. A successful repair of these items done out in the field can …

Go to article

Indispensable Homes In Third World Countries: Constructing A Home In Tijuana, Mexico, Myles Hubers Mar 2021

Indispensable Homes In Third World Countries: Constructing A Home In Tijuana, Mexico, Myles Hubers

Construction Management

This project was created to explore a way in which poverty around the world could ultimately be reduced. The way in which this project intends to demonstrate a method used to reduce poverty is by building a home for a specific family in Tijuana, Mexico. In doing so, this home will act as a model home for a manual, comprised of steps that should be taken to construct similar homes throughout any third world country. The goal of this project is to highlight the importance of poverty in the world while also creating a buildable solution in order to reduce …

Go to article

Common Issues Of Compliance With Personal Protective Equipment For Construction Workers, Alexandra N. Gattuso Mar 2021

Common Issues Of Compliance With Personal Protective Equipment For Construction Workers, Alexandra N. Gattuso

Construction Management

Personal Protective Equipment (PPE) is an essential component to the safety of workers on construction jobsites. Construction is ranked one of the most dangerous industries to work in, with the highest reports of fatal work injuries. For this reason, it is required that construction employees wear PPE to keep them safe during work. Despite this requirement, many workers neglect to wear PPE, exposing themselves to high risk of injury and death. A survey was conducted on thirty-three (33) construction workers in California to gain a better understanding of issues with PPE and reasons for non-compliance. The survey found that only …

Go to article

Subcontractor Claim Management And Dispute Resolution Methods In The State Of California Versus The Province Of British Columbia: A Case Study, Harrison A D Grant Mar 2021

Subcontractor Claim Management And Dispute Resolution Methods In The State Of California Versus The Province Of British Columbia: A Case Study, Harrison A D Grant

Construction Management

In the construction industry, discordance between what is expected versus what is delivered often arises. This disparity is commonly handled using informal negotiation. However, if negotiations fail, then claims and disputes often emerge. Issues involving scope of work, change orders, schedule, and payment can lead to conflicts. Companies try to employ the best alternative dispute resolution method to settle subcontractor claims and disputes without the need for litigation. Speaking with construction professionals in California and British Columbia, a difference in opinion exists as to which method is considered most effective when dealing with subcontractor claims and disputes. In California, the …

Go to article

The Effects Of Waste Marble Powder On Sustainable Concrete, Jeremy S. Tennesen Mar 2021

The Effects Of Waste Marble Powder On Sustainable Concrete, Jeremy S. Tennesen

Construction Management

Sustainability has been growing consistently more popular in construction, with projects introducing innovative ideas to build greener every year. One material that has not experienced many innovations since emerging in building use is concrete. The reason behind this could be the chemical process of curing concrete being unique compared to most materials. While concrete can be broken down into some of its original components, water, cement, and admixtures used are not retainable. This makes it difficult to recycle the material, and the aggregates recovered from recycling also experience a loss in strength. With admixtures being involved in most concrete mixes …

Go to article

Net-Zero Homes, The Homes Of The Future, Primo Guseppi Facchini Mar 2021

Net-Zero Homes, The Homes Of The Future, Primo Guseppi Facchini

Construction Management

Net-Zero homes are the homes of the future (Holmes, 2018). What makes Net-zero homes unique is they rely on solar power, opposed to all standard housing that relies on the power grid. These homes use solar instead of other forms of energy generating technology because it is more affordable and better for the environment. California has blazed the trail for the rest of the United States and the world to follow with their Net-Zero housing proposition. Starting January 2020 California will require all residential buildings to be net-zero homes. Net-Zero homes are important because it is no secret that our …

Go to article

Wood Post And Non-Climb Fencing Construction For Hoofstock Pasture, Jessica Miller Mar 2021

Wood Post And Non-Climb Fencing Construction For Hoofstock Pasture, Jessica Miller

Construction Management

This paper covers the planning, site clearing and construction of a new 7,100 square foot hoofstock pasture for the nonprofit group Conservation Ambassadors at their Northern campus in Weimar, California. The project involved planning the layout of the new pasture based on the owner’s preferences for pasture size, material type and location as well as removing several old pre-existing posts to prepare for the new fence to be built. New two-foot deep post holes were dug and the four-inch diameter, eight-foot long wood posts were leveled and set in concrete. Horizontal H-braces and cross brace tension wire were added to …

Go to article

Sustainable Bus Stop: Design & Pre-Construction, Nadov O. Rader Mar 2021

Sustainable Bus Stop: Design & Pre-Construction, Nadov O. Rader

Construction Management

The objective of this project is to design and prepare to build a sustainable bus stop for the City of San Luis Obispo (SLO). Compiled are pre-construction plans and documents for delivery of a sustainable bus stop. All pre-construction services include: project budget/estimates, construction plans and specifications including architectural and electrical plans, timeline/schedule, and materials lists. With a strong focus on sustainability, the design incorporates the use of photovoltaic panels as a form of renewable energy to power features of the sheltered bus stop. This includes a light fixture and a pump to use collected rainwater to nourish native vegetation …

Go to article

Schedule Efficiency Associated With The Tilt-Up Construction Method: A Case Study, Jake A. Barron Mar 2021

Schedule Efficiency Associated With The Tilt-Up Construction Method: A Case Study, Jake A. Barron

Construction Management

Tilt-up is an efficient method of project delivery that is best suited for large, flat projects such as commercial warehouses and distribution centers. The hypothesis is that this method of casting wall panels on site, and then tilting them upright, allows for certain unique activity sequences which could provide faster project completion. In order to prove this theory, analysis of two tilt-up projects completed within a mile of each other by the same contractor, and assessment of their schedules, will provide insight into the specific tasks that allow for better delivery speed. This methodology paired with interviews of team members, …

Go to article

Industry Perceptions On Public Sector Construction Delivery Methods, Evan Mccollough Mar 2021

Industry Perceptions On Public Sector Construction Delivery Methods, Evan Mccollough

Construction Management

The public construction sector in the United States has predominantly used the traditional delivery method, also known as design-bid-build, to obtain and deliver projects. Accurately assessing the direction of the public construction sector must include analysis of the emergence of Public-Private Partnerships (P3) and alternative delivery methods. P3 projects in the United States are relatively new, an emerging trend from the late 2000s as an innovative way to utilize private capital to finance public projects, beyond a typical bond sale. Alternative delivery methods refer to any project award or management arrangement other than the typical design-bid-build, lump sum, competitive bidding …

Go to article

Paso Robles Police Department Outdoor Training Facility Improvements - Phase 1, Zachary T. Stellini Mar 2021

Paso Robles Police Department Outdoor Training Facility Improvements - Phase 1, Zachary T. Stellini

Construction Management

This paper outlines the pre-construction and construction of the 24,300 square foot Paso Robles Police Department outdoor training facility improvements. The project focuses 12,000 square feet of the total site with improvements that include earthwork and new concrete flatwork. This project is group project with Gavin Abraham and Nic Petri that is broken up into 3 phases, this paper will primarily focus on the phase 1 which includes grading and excavation. The purpose of this project was to provide the Paso Robles Police Department with a modern, functional facility that allows its officers to be better equipped to protect the …

Go to article

Possible Use For Recycled Disposable Face Masks In Concrete, Lauren Douglas Mar 2021

Possible Use For Recycled Disposable Face Masks In Concrete, Lauren Douglas

Construction Management

Disposable face masks are one of many single use products that are detrimental to the environment. The construction industry has been introducing new ways to incorporate recycled products into their materials. This paper addresses one possible way to use more environmentally friendly materials in the construction industry. 16 concrete cylinders were prepared using 4x8 forms. The mix was manipulated to test the impact of incorporating varying levels of disposable shredded face masks. Compressive strength and workability were measured in these cylinders. Eight cylinders were prepared for the control batch. Four cylinders were prepared using 10 oz. of shredded face masks …

Go to article

A Case Study On The Capacity And Competitiveness Of Small-Sized Contractors On The Central Coast Of California, Lev S. Garcia Mar 2021

A Case Study On The Capacity And Competitiveness Of Small-Sized Contractors On The Central Coast Of California, Lev S. Garcia

Construction Management

The market conditions in which small-sized construction firms in California compete can be significantly influenced by the regional location of their projects. This research paper reviews a qualitative case study executed through semi-structured interviews with two construction firms on the Central Coast of California. Through gaining the perspectives of two companies, one that recently grew into a medium sized company and one that is small-sized, this case study aims to identify market characteristics that influence small-sized companies’ abilities to compete on the Central Coast. The case study indicates that competition between existing companies, the threat of new arrivals, the cost …

Go to article

Residential Bathroom And Tile Shower Addition During Covid-19 Quarantine, Joseph Szillinsky Mar 2021

Residential Bathroom And Tile Shower Addition During Covid-19 Quarantine, Joseph Szillinsky

Construction Management

This paper outlines the design and construction of a new code compliant bathroom including: a low profile shower pan, ceramic-tile shower enclosure, and new plumbing piping and fixtures. One of the main objectives was to complete the new shower which would be easily accessible and maintenance free in order to support a local elderly couple. The selection of this project took place during the COVID-19 pandemic approximately nine months after California issued the first mandatory statewide Stay-at-Home Order. During the early design and development stages an opportunity to collaborate with a local trades-person was identified as well as the need …

Go to article

Comparing The Environmental Impacts Of Using Mass Timber And Structural Steel, Khang Hoang Nguyen, Steelee Knight Morgan Mar 2021

Comparing The Environmental Impacts Of Using Mass Timber And Structural Steel, Khang Hoang Nguyen, Steelee Knight Morgan

Construction Management

Although mass timber has seen a gradual rise in demand in the past, there has been a lack of extensive research on the environmental impacts of using mass timber as a primary structural framing material. This paper compares structural steel, and mass timber’s total embodied carbon emissions. Accurate estimates were made using plans and specs for different projects retrieved from semi-structured interviews. The estimates were input through the EC3 Calculator to provide extensive total carbon emissions measurements between each construction material. Using structural steel framing increased the project’s overall environmental impact by roughly 84% compared to using mass timber. The …

Go to article

Bs News March/April Mar 2021

Bs News March/April

Building Services Engineering

No abstract provided.

Go to article

Initial Assessment Of Liquefied Scrap Tire Concrete, Abdulkareem Kuaryouti, Christopher D. Eamon Feb 2021

Initial Assessment Of Liquefied Scrap Tire Concrete, Abdulkareem Kuaryouti, Christopher D. Eamon

Civil and Environmental Engineering Faculty Research Publications

A new approach to incorporate scrap tire material into concrete was investigated, where two reclaimed waste tire components, carbon black and fuel oil, were used to replace a portion of water. The effect of “liquid tire” content to water ratios from 5-40% on an otherwise typical concrete mix were assessed, where compressive and flexural strength, flexural toughness, modulus of elasticity, and several fresh concrete properties were determined. Results were compared to typically expected results of traditional shredded tire mixes with equivalent tire content. It was found that the liquid tire mixes experienced significantly less losses of compressive strength and workability …

Go to article

Quantifying Materials Waste In The Egyptian Construction Industry: A Critical Analysis Of Rates And Factors, Ayman Ahmed Ezzat Othman, Ahmed Osama Daoud Dr., Obas John Ebohon, Ali Bayyati Feb 2021

Quantifying Materials Waste In The Egyptian Construction Industry: A Critical Analysis Of Rates And Factors, Ayman Ahmed Ezzat Othman, Ahmed Osama Daoud Dr., Obas John Ebohon, Ali Bayyati

Architectural Engineering

Construction and demolition waste (CDW) is a critical challenge facing the construction industry. It leads to deterioration of the triple bottom line of sustainability. Unfortunately, the CDW management research in Egypt lacks studies investigating (1) the variations in CDW generation (CDWG) among different types of construction projects, and (2) the factors affecting CDW reduction (CDWR). Based on a benchmarking approach, this research (1) quantifies CDW in terms of generation rates and costs among different construction project types in Egypt, and (2) investigates the relationship between CDWG and different adopted CDWR factors. Using structured interviews, a comparative case study was conducted …

Go to article

First Prev Next Last