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Full-Text Articles in Civil and Environmental Engineering

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 …

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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 …

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How Green Buildings Effect Both Price And Desire In The Real Estate Housing Market, Bryson Lino Mar 2021

How Green Buildings Effect Both Price And Desire In The Real Estate Housing Market, Bryson Lino

Construction Management

There has been a recent emphasis on green building certification. Unlike other conventional building approaches, green building has emerged as a sustainable way of building in the real estate housing market. As a result of the green building revolution, the real estate developers have been prompted to acknowledge the essence of environmental and social factors on the investment properties’ value. It is through such a paradigm shift that the green building has redefined the real estate business. Given that climate change has emerged as a major global issue, interventions have been made to avert the emission of high levels of …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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 …

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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, …

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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 …

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Bs News March/April Mar 2021

Bs News March/April

Building Services Engineering

No abstract provided.

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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 …

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The Effect Of Molar Peroxide Ratio On The Oxidation Of 2,4-Dinitroanisole In An Ultraviolet Light Emitting Diode Advanced Oxidation Process, Troy M. Searcy Mar 2021

The Effect Of Molar Peroxide Ratio On The Oxidation Of 2,4-Dinitroanisole In An Ultraviolet Light Emitting Diode Advanced Oxidation Process, Troy M. Searcy

Theses and Dissertations

Insensitive munitions (IMs) are increasingly employed by the U.S. military to prevent unintended detonations associated with conventional munitions. One IM used extensively is 2,4 dinitroanisole (DNAN). This research employed an ultraviolet light emitting diode (LED) and hydrogen peroxide advanced oxidation process (AOP) to treat DNAN-contaminated water at the laboratory scale. Five molar peroxide ratios (50:1, 100:1, 250:1, 500:1, 1000:1) were evaluated using the observed pseudo first-order rate constant as the performance metric. Both peroxide-limiting reactions and radical scavenging were observed over the range of ratios tested, with overall removal of DNAN decreasing above a ratio of 500:1.

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Climate-Informed Prediction And Forecast Modeling Of Installation Total Energy Consumption, Scott C. Weiss Mar 2021

Climate-Informed Prediction And Forecast Modeling Of Installation Total Energy Consumption, Scott C. Weiss

Theses and Dissertations

Climate variability is an external and stochastic factor that causes energy demand uncertainty. Energy managers can use climate-based models to understand future trends of energy demand and to adjust operations, policy, and budgets accordingly. This research focuses on 1) identifying how climate attributes impact energy use, 2) creating a historically informed statistical modeling framework to skillfully predict energy use, and 3) forecasting future changes to energy use and costs, using CMIP5 temperature projections, at the campus level. After synthesizing the existing breadth of research on climate-informed energy modeling, a skillful, unbiased, climate-informed total energy consumption prediction model is developed for …

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Evaluation Of Efficient Water Reuse Technologies For Sustainable Forward Operating Bases, Kelsie L. Crouch Mar 2021

Evaluation Of Efficient Water Reuse Technologies For Sustainable Forward Operating Bases, Kelsie L. Crouch

Theses and Dissertations

A secure water source is essential to the resiliency and readiness of military installations and contingency operation locations, especially those located in the dry climates the US military operates in today. There are multiple issues of concern when identifying water sources, such as security, cleanliness, accessibility, and sustainability. Water resources pose a potential vulnerability to mission readiness in a remote, agile environment, such as a forward operating base (FOB). Having a secure water resource helps facilitate mission readiness in the contingency environment, offering the opportunity to be more resilient and cost-effective. Current water treatment technologies present the possibility to perform …

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Conversion From Coal To Natural Gas At Wright Patterson Air Force Base: An Analysis And Case Study, Tyler A. Ferry Mar 2021

Conversion From Coal To Natural Gas At Wright Patterson Air Force Base: An Analysis And Case Study, Tyler A. Ferry

Theses and Dissertations

Over the last 20 years, natural gas has replaced coal as the preferred fossil fuel for heat and power generation across the United States, due to its increased prevalence, lower cost, and reduced environmental impacts. While most conversion decisions are driven by cost savings, proponents of energy transitions often cite emissions reductions as a tangential benefit. Over the same time, climate change and its impact on the environment and society have come to the forefront of scientific inquiry. One example of the transition from coal to natural gas can be found in Dayton, Ohio. Wright Patterson Air Force Base (WPAFB) …

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How New, Innovative Technology Can Be Implemented To Combat The Construction Industry Labor Shortage, Noah David Jackson Mar 2021

How New, Innovative Technology Can Be Implemented To Combat The Construction Industry Labor Shortage, Noah David Jackson

The Professional Constructor

This essay addresses the construction industry’s need to compensate for the current and projected labor shortage through innovative technologies. In the first portion of this essay, three technologies that are most feasible for implementation – the Internet of Things (IoT), Drones, and Prefabrication – are detailed. The challenges faced are then discussed before the second major portion in which steps for implementation are outlined. These steps include forming partnerships, learning the process, communicating, training, implementing, and adapting and improving. The essay concludes with a discussion of how the AGC organization, and members within, can aid the industry in meeting this …

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