Engineering Commons^™

Design Of Amphitheatre Seating At The Slo Botanical Garden, Sydnee Greer

Construction Management

This senior project was designed to provide a gathering space for the San Luis Obispo community. With the San Luis Obispo Botanical Garden providing an outdoor space for nature education, wedding ceremonies, and several other types of gatherings, they wanted amphitheater seating for forty guests. This project required the design and construction of ten concrete benches that span eight feet with wood Trex added on top for comfort. The focus of this paper will be on the design process of this project. When designing the benches, the Botanical Garden wanted seating that could withstand the elements but still be comfortable …

City Farm Slo - Walk-In Produce Coolbot Cooler, Connor Morinini

Construction Management

This paper describes the planning, financing, and construction of a commercial sized refrigerator for a non-profit urban farm in San Luis Obispo, CA, called City Farm SLO. Construction of the project occurred over a nine-month period from September of 2020 to May of 2021. The project involved building a Tuffshed, site grading, framing a room inside the Tuffshed, hanging a door, installing electricity inside the room, insulating the interior, painting the exterior, installing an air conditioner, and wiring the Coolbot to the air conditioner. The project was built to allow the non-profit organization to begin storing their agricultural crops in …

Outsourcing Vdc Workflows, Kyle K. Bresnahan

Construction Management

In an increasingly demanding world for infrastructure, technological methods have been found to assist construction project's. As innovative construction methods are constantly increasing, so is the demand for technological needs within the architecture, engineering, and construction (AEC) industry. To ensure technological adoption, many countries have started to mandate higher levels of building information modeling (BIM) documentation beyond the 2D construction documents traditionally required throughout construction review and permitting. Some companies have capitalized on this change to the extent of making BIM their primary business. These companies focus solely on virtual design and construction (VDC) and determine whether clients lacking this …

San Luis Obispo Botanical Garden Concrete Benches, Anthony N. Masarweh

Construction Management

The purpose of this project is to build a total of 10, 8-foot-long concrete benches. These benches will be stationed at the San Luis Obispo Botanical Garden located at 3450 Dairy Creek Road, San Luis Obispo. The design consists of a large block style bench with composite Trex boards layered on top for comfort upon sitting. The structure consists of a rebar cage made of #3, 12”x18” stirrups at 16” O.C. There is a foam core in the middle of the rebar cage to allow for lighter weight benches and also to minimize the cubic yards of concrete used per …

Creating A More Diverse And Inclusive Environment In The Cal Poly Construction Management Department, Miriam Robles

Construction Management

This study looks at how to increase diversity and inclusivity in the Cal Poly Construction Management Department. It is becoming increasingly important to promote diversity and inclusivity not just in the classroom, but also in the workforce. It is important for the Cal Poly CM program to put more of an emphasis on trying to create a more a diverse major and acknowledge the importance of having inclusivity and diversity in the major. This project researched ways in which other universities have used different methods to increase diversity and create a more inclusive culture on their campus. This research was …

Journeyman International: Third Lens Ministries Development In Jonestown, Mississippi, Josh Riley De Mattei

Construction Management

Jonestown, Mississippi has been known to be a place of poverty and in need of infrastructure. A nonprofit, Third Lens Ministries is developing housing for the people of Jonestown, Mississippi. Over the last 9 months, an architect Margy Maher, an engineer Autumn Wagner, as well as myself, a construction management major, have all collaborated in order to design, engineer and plan the perfect Dwelling for the people of Jonestown, Mississippi. While the scope of the project includes community centers and housing, our team’s scope was to focus on the residential development and site work. As the construction manager, my deliverables …

Paso Robles Police Department Outdoor Training Facility Improvements, Nicolas A. Petri

Construction Management

This paper will outline the pre-construction and construction processes of the Paso Robles Police Department’s outdoor training facility improvements. The project, located in East Paso Robles, focuses on 12,000 square feet of a 24,300 square foot site owned by the city of Paso Robles. This is a group project done with Gavin Abraham and Zach Stellini that remodeled an existing outdoor training facility, including over 1400 square feet of concrete flatwork, underground utilities, 80 cubic yards of decomposed granite and various site civil improvements. The purpose of this project was to provide the Paso Robles Police Department with a cleaner …

Alternatives To Oil-Based Binders For Asphalt Concrete Paving In Northern California, Parker E. Jenks

Construction Management

Every day, millions of Americans travel along highways and roadways during their everyday lives. Many people do not understand the vital impact that this infrastructure has on their day to day activities and what goes into building these roadways. The traditional process of using paving a roadway requires the use of an asphalt binder that is typically an oil-based binder. With the environmental effects of manufacturing and producing these oils, as well as the effects on the environment when the asphalt is placed, there have been a few accounts of producing an alternative asphalt binder that does not use oil. …

Development Of Bluebeam Curriculum For Construction Management Department In Virtual And In-Class Transmissions, Jacob K. Clark

Construction Management

This paper discusses the development of two new learning modules for the California Polytechnic University, San Luis Obispo Construction Management department on Bluebeam practices and usage that reflect industry and technological changes. Adapting to and maintaining practices in distance learning, this curriculum allows for optimal online education and further advancement and clarity in in-person transmissions. With step-by-step videos for optional distance learning, students and faculty can choose to engage in alternative modes of education delivery. Building on traditional roles of construction technology education, teaching instructions are provided for faculty. This project based senior project positively impacts the body of knowledge …

Workers Head Protection Preferences In Construction, Matthew R. Langbehn

Construction Management

Head injuries are one of the most common ways workers are injured on a construction site, but head protection has not evolved over the last few decades. A new style of head protection, a safety helmet is being introduced to better protect workers, but the new style has not been widely adopted. A survey was conducted to determine workers preferences when choosing head protection and 31 responses were collected. 68% of the respondents currently wear a safety helmet, but 60% of the respondents would choose a traditional helmet if given the choice. 73% workers with more than 5 years of …

Volumetric Modules For Mixed-Use Buildings: Logan At 51st - A Case Study, Abraham J. Ahmed

Construction Management

Modular construction has been a building technique since the 16^th century and has since been refined into one of today’s leading construction approaches. Modular construction is the process of manufacturing buildings or structures off-site. Modular construction is split into panelized systems which are two-dimensional system or volumetric system which are three-dimensional. This paper will examine the largest volumetric modular project, The Logan at 51^st, in the Bay Area which is set to be complete by the end of 2020. This paper will outline the current modular construction trend; the different types of modular construction; the process that …

Prioritizing Mental Health Awareness In The Construction Industry, Molly E. Pryde

Construction Management

The construction industry is known as one of the most demanding industries for employees, both physically and mentally. Due to various factors associated with the working conditions and lifestyles of construction workers, the likelihood of mental health challenges amongst this demographic is quite high. Furthermore, industry culture surrounding masculinity poses a barrier to properly addressing the issue. Because of the dynamic and fast-paced work environment, assessing potential risks to protect workers is an integral part of each day on the job site. As a key component in company success and individual well-being, safety has become ingrained in construction culture. However, …

Home Builders’ Perception Of Virtual Inspections: A Case Study, Kyle J. Morse

Construction Management

The COVID-19 pandemic created a new set of restrictions and safety protocols for the residential construction industry. Many jurisdictions began placing social distancing practices on inspectors, limiting their ability to visit the jobsite. The adjustment required many residential builders and inspectors to adapt to virtual inspections using videos, photographs, and recordings. As this new technology gains traction in the residential industry, questions arise regarding its benefits, drawbacks, and industry acceptance. This case study analyzes the perceptions and experiences of five separate homebuilders in Yolo County, California. Semi-structured interviews were conducted with five residential general contractors, transcribed, and thematically analyzed to …

Resequencing To Make Up Lost Time During The Covid-19 Pandemic: Case Study, Enzo Av Rienzi

Construction Management

Construction schedules are typically built by organizing activities according to trades as a whole. The entire foundation is poured, then the entire superstructure is erected, followed by interior framing, etc. However, for projects with an unchangeable finish date such as a school, other scheduling methods must be considered when the project is faced with uncontrollable, force majeure events which threaten to delay the project deadline. In order to examine the efficacy of alternative scheduling techniques, analysis of a $50 million school project will provide insight into how tasks can be safely overlapped to gain lost time in a schedule. This …

Implementation Of A 4d Schedule As A Project Communication Tool, Jared Jacobs

Construction Management

This report details the project that was completed to produce a preliminary 4D Schedule for the Alma Clark Glass Residence Hall on Western Washington University’s campus. A 4D schedule combines the 3D model of the building and the project schedule and ultimately shows the sequence of construction. The main objective of this project is to explore areas for improved communication strategies within the project team. A 4D schedule provides an added dimension of communication that has the potential, if delivered effectively, to clearly define construction milestones and sequences for an owner to understand. The goal of this project is to …

City Farm Slo - Walk-In Produce Coolbot Cooler, Connor Morinini

Construction Management

This paper describes the planning, financing, and construction of a commercial sized refrigerator for a non-profit urban farm in San Luis Obispo, CA, called City Farm SLO. Construction of the project occurred over a nine-month period from September of 2020 to May of 2021. The project involved building a Tuffshed, site grading, framing a room inside the Tuffshed, hanging a door, installing electricity inside the room, insulating the interior, painting the exterior, installing an air conditioner, and wiring the Coolbot to the air conditioner. The project was built to allow the non-profit organization to begin storing their agricultural crops in …

Optical And Structural Properties Of Manganese-Doped Zinc Oxide Grown By Metal-Organic Chemical Vapor Deposition, Vishal Saravade, Zahra Manzoor, Alexis Corda, Chuanle Zhou, Ian Ferguson, Na Lu

Electrical and Computer Engineering Faculty Research & Creative Works

This systematic study investigates the optical properties and process−structure−property relationships of Mn-doped zinc oxide (ZnMnO) grown by metal-organic chemical vapor deposition with varying Mn-doping concentration and growth conditions. ZnMnO exhibits a good crystal quality oriented in the (002) direction and contains intermixtures of zinc oxide (ZnO)-like and manganese oxide (MnxOy)-like phases. The material exhibits a direct energy absorption band-edge and a reduction in bandgap with Mn-doping. Photoluminescence studies show that Mn-doping can simultaneously tailor broad green band luminescence and ultraviolet edge emissions. Post-growth air-annealing results in broad MnxOy-related photoluminescence emissions at 3.3–4.5 eV. A further reduction in the absorption band-edge …

Double-Acting Batch Reverse Osmosis Configuration For Best-In-Class Efficiency And Low Downtime, Sandra Cordoba, Abhimanyu Das, Jorge Leon, Jose M. Garcia, David M. Warsinger

School of Mechanical Engineering Faculty Publications

Energy consumption in reverse osmosis has decreased substantially over the last few decades thanks to the implementation of energy recovery devices, high efficiency pumps, and improved membranes. However, to further increase the adoption of the technology, its energy needs must still be reduced. Batch and semi-batch reverse osmosis configurations have shown potential to be the most energy efficient reverse osmosis variants, but have remaining inefficiencies from brine mixing and high downtime. In this study, we modeled in new detail a further improved double-acting batch reverse osmosis system that uses a high-pressure tank with a reciprocating piston. A high-pressure pump is …

Automating Deep-Sea Video Annotation, Hanson Egbert

Master's Theses

As the world explores opportunities to develop offshore renewable energy capacity, there will be a growing need for pre-construction biological surveys and post-construction monitoring in the challenging marine environment. Underwater video is a powerful tool to facilitate such surveys, but the interpretation of the imagery is costly and time-consuming. Emerging technologies have improved automated analysis of underwater video, but these technologies are not yet accurate or accessible enough for widespread adoption in the scientific community or industries that might benefit from these tools.

To address these challenges, prior research developed a website that allows to: (1) Quickly play and annotate …

Simulation Of A Configurable Hybrid Aircraft, Brandon Bartlett

Master's Theses

As the demand for air transportation is projected to increase, the environmental impacts produced by air travel will also increase. In order to counter the environmental impacts while also meeting the demand for air travel, there are goals and research initiatives that aim to develop more efficient aircraft. An emerging technology that supports these goals is the application of hybrid propulsion to aircraft, but there is a challenge in effectively exploring the performance of hybrid aircraft due to the time and money required for safe flight testing and due to the diverse design space of hybrid architectures and components. Therefore, …

Bibliometric Review On Iot Based System For Remote Downloading On Microcontroller, Arundhati Bandopadhyaya Ms., Diya Dodwad Ms., Diviyanshi Gupta Ms., Surya Koyyana Mr., Parag Narkhede Mr., Shripad Deshpande Mr.

Library Philosophy and Practice (e-journal)

Working with sensors has become an area of expertise within the domain of electronic engineering. On a day to day basis, thousands of sensors are put to use around us, for instance, in smoke alarms, speedometers, motors, computers, radiators etc. to accumulate sensor data, cables that connect the sensors to the bottom station after which the information is worked on. But cabling is often expensive especially when handling large scale industrial applications ^[5]. For an equivalent reason, low-cost wireless networks came into the picture recently and are in high demand. A research paper we found during our review of …

Maize Tassel Detection From Uav Imagery Using Deep Learning, Aziza Alzadjali, Mohammed H. Alali, Arun Narenthiran Weeranampalayam Sivakumar, Jitender S. Deogun, Stephen Scott, James C. Schnable, Yeyin Shi

Department of Mechanical and Materials Engineering: Faculty Publications

The timing of flowering plays a critical role in determining the productivity of agricultural crops. If the crops flower too early, the crop would mature before the end of the growing season, losing the opportunity to capture and use large amounts of light energy. If the crops flower too late, the crop may be killed by the change of seasons before it is ready to harvest. Maize flowering is one of the most important periods where even small amounts of stress can significantly alter yield. In this work, we developed and compared two methods for automatic tassel detection based on …

Modeling Vadose Zone Hydrology [Lecture Notes], Derek M. Heeren, Dean E. Eisenhauer

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Modeling Vadose Zone Hydrology is a graduate-level course offered biennially in the Department of Biological Systems Engineering. Topics included hydraulic properties of porous media, application of Darcy's Law in variably saturated media, hydrologic and transport processes in the vadose zone, and solution of steady and unsteady flow problems using numerical techniques. A graphical approach for characterizing vertical one-dimensional problems with energy head profiles was emphasized. Common one-dimensional flow and transport problems were solved analytically. The course was taught using a combination of lecture notes and PowerPoint presentations. The lecture notes from 2021, captured using the Microsoft Whiteboard app with a …

Hands-Free Electric Skateboard, Blaise M. Bibolet

Electrical Engineering

An electric skateboard functions as a skateboard propelled by electric motors. It is usually controlled with a handheld controller. This project describes an electric skateboard controlled via weight distribution. To accelerate, the rider leans forward, and to decelerate, the rider leans backward. It can travel 17 miles per hour and has regenerative braking to recharge the battery.

Ultra-High-Energy Neutrino Detection Antenna Simulations, Nicholas C. Garcia

Electrical Engineering

Neutrinos allow researchers to investigate high-energy galactic phenomena, such as supernovae and black holes. Neutrinos interact with their surroundings via the weak nuclear force and therefore, travel unattenuated through space and are not deflected by electromagnetic fields. However, they do rarely interact with other particles. When neutrinos interact with nucleons (protons or neutrons) in a dielectric medium (i.e.: ice sheets), they are detectable through a cone of coherent electromagnetic radiation (Askaryan Radiation) created by the particle shower generated from the neutrino interaction [1]. The Radio Neutrino Observatory in Greenland (RNO-G) detects UHE neutrinos greater than 100 PeV (10¹⁵ eV) …

Illustrating Important Effects Of Second-Order Sensitivities On Response Uncertainties In Reactor Physics, Dan Gabriel Cacuci

Faculty Publications

This paper illustrates the relative importance of the largest first- and second-order sensitivities of the leakage response of an OECD/NEA reactor physics benchmark (a polyethylene-reflected plutonium sphere) to the benchmark’s underlying total cross sections. It will be shown that numerous 2nd-order sensitivities of the leakage response with respect to the total cross sections are significantly larger than the largest corresponding 1st-order sensitivities. In particular, the contributions of the 2nd-order sensitivities cause the mean (expected) value of the response to differ appreciably from its computed value and also cause the response distribution to be skewed towards positive values relative to the …

Study Of Electrodeposition Of Copper-Indium Material For Fabrication Of Cis Thin-Film Solar Cells, Leher Farooq

Theses

Abstract

Copper-Indium material for the fabrication of CIS/CIGS thin-film solar cells and for applications as an alloy is one of the most auspicious materials currently being studied and has attracted significant interest in solar energy and other industries. In the past, there have been several methods used for the fabrication of chalcopyrite thin-film solar cells. However, one of the best methods in the industry is electrodeposition, which employs the principles of electrochemistry to deposit materials on a working electrode. The cyclic voltammetry and constant potential deposition studies have been conducted for the electrodeposited copper indium material. In order to better …

Heat Transfer Intensification In Microchannel Heat Sinks (Mchs) - Wavy Channels Embedded With Pin Fins, Anas Mohammad Amin Alkhazaleh

Theses

This work conceptualizes heat sinks for electronics employing wavy/sinusoidal microchannels embedded with pin fins and subsequently analyzes their performance in terms of thermal resistance, pressure drop, maximum chip temperature, and the associated pumping power due to the pressure drop. The conceptualized wavy Microchannel Heat Sink (MCHS) is mathematically modeled using a combination of governing equations including energy equations, continuity equations, and Navier- Stokes equations. The performance of the wavy microchannel heat sink embedded with pin fins is evaluated based on a parametric study covering multiple parameters; microchannel’s amplitude, frequency, hydraulic diameter, pin fins’ diameter, and location, and Reynolds number. The …

Extraction And Bioactivity Evaluation Of Antioxidant Components From Teucrium Stocksianum Bioss Collected From Uae, Ahmad Ayman Al Salloum

Theses

Recently, the industry of Natural Bioactive Compounds (NBAC) is expanding dramatically due to its high medical potentials. High bioactivity of natural extracts from a wide range of plants is evident from the reported literature. For instance, NBACs show antibacterial, antifungal, antimicrobial, anti-inflammatory, anticancer and antioxidant activities. Teucrium stocksianum Boiss. from the Lamiaceae family is a known herb in the traditional medicine in United Arab Emirates. Multiple bioactivities of T. stocksianum were recorded such as anti-inflammation, analgesia, antioxidation, anticancer, antinociception and antimicrobial bioactivity. In this thesis, the extraction of NBACs from T. stocksianum was studied with Microwave-assisted extraction using Deep eutectic …

Experimental Investigation And Prediction Of Long-Term Effect Of Sustained Load And Harsh Environment On Fiber-Reinforced Polymer Composites, Amir Hussain Idrisi

Dissertations

In this dissertation the durability of thermoset composites was investigated under sustained load. Two thermoset composites, E-glass/epoxy and E-glass/polyurethane were immersed in seawater under sustained load (10%, 15%, 20%, 25% of failure load) and varying temperature (23°C to 95°C) for the period of 15 months. Mechanical, physical and thermal properties were experimentally investigated. The effects of temperature, moisture, and immersion time on the deterioration of the composite material were studied for both composites. It was observed that the weight of the samples increased with the immersion time and temperature for both the composites. The highest increase in weight of the …