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Articles 751 - 780 of 4474
Full-Text Articles in Construction Engineering and Management
Safety Of Optimized Concrete Median Barrier Without Planting Soil, Zhong Chunyao, Ma Qing, Li Yangfan, Gong Shuai, Liu Siyuan, Yan Shuming
Safety Of Optimized Concrete Median Barrier Without Planting Soil, Zhong Chunyao, Ma Qing, Li Yangfan, Gong Shuai, Liu Siyuan, Yan Shuming
Journal of China & Foreign Highway
In order to study the safety of optimized concrete median barrier without planting soil,the technology combining computer simulation,sled test,and full-scale impact test of real vehicles was adopted for analysis and verification.In addition,a scheme was proposed to improve the anti-overturning ability of the barrier without planting soil by strengthening the supporting block,and the scheme of setting a 20 cm-high supporting block between the barrier walls was optimized.The safety of the barrier scheme was evaluated by taking the most unfavorable large truck as an example.The results show that the protection level of the optimized concrete median barrier without planting soil is SAm, …
Aided Design Method And Application Of Rutting Prevention And Maintenance In Asphalt Pavement Based On Digital Holographic 3d Detection, Wang Jingfei, Wang Wang, Xu Xinquan, Huang Zhijian, Ti Jing, Yao Yanru
Aided Design Method And Application Of Rutting Prevention And Maintenance In Asphalt Pavement Based On Digital Holographic 3d Detection, Wang Jingfei, Wang Wang, Xu Xinquan, Huang Zhijian, Ti Jing, Yao Yanru
Journal of China & Foreign Highway
As one of the common diseases of asphalt pavement,rutting has significant impacts on the service life and traffic safety of the pavement.Mild rutting in asphalt pavement during preventive maintenance can lead to increased use of maintenance materials due to rutting deformation.Accurately calculating the amount of materials needed to fill rutting in maintenance designs is of great significance for ensuring maintenance quality and efficiency.Based on the requirements of maintenance engineering,this paper analyzed the problems in maintenance designs that use traditional methods and the data they generate for rutting detection.A design method was proposed for rutting prevention and maintenance in asphalt pavement,assisted …
Success Factors Analysis In Sorong-Manokwari Railway Infrastructure's Project Evaluation With Fuzzy Ahp Method, Flora Tresia Wehelmina Kambuaya, Ayomi Dita Rarasati
Success Factors Analysis In Sorong-Manokwari Railway Infrastructure's Project Evaluation With Fuzzy Ahp Method, Flora Tresia Wehelmina Kambuaya, Ayomi Dita Rarasati
Smart City
An infrastructure project is a long-term project that has two consequences in the form of uncertainty related to risk and expansive costs. Are infrastructure projects a good long-run stimulus to growth economy? Particularly for new developing areas like Papua island where project preparation evaluation has to be established in order to implement the project. Railway infrastructure is a project initiated in 2018 by Indonesia President and is currently still under administration processing. As a new incubator project, the first train project in Papua Land contains several factors that may be essential to drive project success. The critical success factors as …
Evaluation Of Insurance Policies In The Saudi Arabian Construction Contracts, Ahmed Gouda Mohamed
Evaluation Of Insurance Policies In The Saudi Arabian Construction Contracts, Ahmed Gouda Mohamed
Civil Engineering
The construction sector is more complicated and prone to risk than many other industries due to the size of the projects and the financial capital involved. Arranging insurance is the prudent course of action for risk management in the construction sector. There is a lack of clarity in insurance policies for public construction projects in the Kingdom of Saudi Arabia (KSA), which poses additional risks to all involved contracting parties. The aim of this research is to evaluate insurance policies in the KSA's public construction projects to identify the key deficiencies and obstacles and provide a road map for improvement …
Mitigating Uncertainty: Analyzing The Role Of Risk Management In The Construction Industry, Mike Nwafor
Mitigating Uncertainty: Analyzing The Role Of Risk Management In The Construction Industry, Mike Nwafor
Harrisburg University Dissertations and Theses
The construction industry, inherently dynamic and complex, faces a myriad of uncertainties that can significantly impact project outcomes. In this context, effective risk management emerges as a critical component in ensuring project success and sustainability. This abstract explores the role of risk management in the construction industry, highlighting its multifaceted impact on project timelines, costs, and overall quality. Risk management in construction includes detecting, assessing, and managing possible hazards and opportunities throughout the project's life cycle. It includes a proactive approach to anticipating, analyzing, and responding to uncertainties driven by factors such as design modifications, material shortages, labor concerns, weather …
A Machine Learning Framework For Predicting Fabrication Hours For Industrial Steel Structure Projects, Dalia Ibrahim
A Machine Learning Framework For Predicting Fabrication Hours For Industrial Steel Structure Projects, Dalia Ibrahim
Theses and Dissertations
Construction projects are considered high risk projects especially due to their required large capital making them require extreme attention in estimation as overestimating a project will lead to losing bids and underestimating them will lead to incurring more costs than budgeted resulting in losses. However, estimators are often faced with very tight timelines to finish their estimates leading them to primarily rely on their experience disregarding some crucial factors resulting in inaccurate estimates. In the steel structures industry, the steel fabrication phase accounts for 30 to 40% of the overall project cost; in addition, the steel industry is labor driven; …
Exploring The Impact Of Artificial Intelligence On Project Management Across The Manufacturing, Technology, And Construction Industries, Susie Diaz Ferrera
Exploring The Impact Of Artificial Intelligence On Project Management Across The Manufacturing, Technology, And Construction Industries, Susie Diaz Ferrera
Harrisburg University Dissertations and Theses
This study explores the impact of Artificial Intelligence (AI) on project management across the manufacturing, technology, and construction industries. The research focuses on understanding the benefits, challenges, and long-term implications of AI utilization in these sectors. Key findings indicate that 46% of participants use AI mainly for task automation and enhancing functions like brainstorming and communication, which significantly boosts efficiency and team productivity. Despite these benefits, the research identifies several obstacles, including high initial costs, inadequate training, technical issues, and unclear regulatory guidelines. The study addresses four main questions, revealing that AI not only enhances project management processes but also …
Moringa Connect: Design And Fabrication Of The Drum For A Moringa Leaf Dryer Prototype, Braden Deck
Moringa Connect: Design And Fabrication Of The Drum For A Moringa Leaf Dryer Prototype, Braden Deck
Construction Management
Moringa Connect, founded in 2013 by MIT alumnus Kwami Williams, supports over 5,000 African farmers, primarily in Ghana, by providing a direct sales, manufacturing, and shipping platform for nutrient-dense moringa leaves. Despite significant social and economic benefits for the local farmers, the current drying process in Accra, Ghana, is inefficient, requiring extensive human handling. To address this, a team of five Cal Poly students partnered with Moringa Connect to design a prototype rotating hopper to streamline the drying process and reduce production costs. The project faced numerous challenges, including material sourcing constraints in Ghana and the need for extensive fabrication …
Investigating The Performance Of Bendable Concrete Against Traditional Concrete, Landon J. Poston
Investigating The Performance Of Bendable Concrete Against Traditional Concrete, Landon J. Poston
Construction Management
The qualitative research in this case study evaluates the importance of bendable concrete within various construction settings. The data aims to justify the interest in bendable concrete, as well as why it is not being used more in structural work. The intended stakeholders of this paper are concrete suppliers, contractors, and researchers who are looking for more imperative ways to manufacture a more sustainable form of concrete. Through a brief online meeting and a Google Form questionnaire, company participants were able to provide the knowledge and feedback desired for how bendable concrete can be incorporated more in the future of …
Heavy Civil Estimating Utilizing Hcss Heavybid, Quintan Matthew Davis
Heavy Civil Estimating Utilizing Hcss Heavybid, Quintan Matthew Davis
Construction Management
The estimate process is an essential aspect of the construction industry. Understanding how bids are formed and being able to create one for yourself is critical in being able to really understand cost breakdown of a construction process. This paper will focus around the process in creating a presentation for Cal Poly students, breaking down HCSS HeavyBid and its functions. This project was created to address this idea of attempting to teach HeavyBid to Cal Poly future young engineers. This was particularly important because young students learn how to be a great young engineer in the construction field, however not …
San Luis Obispo High School Ffa Barn Demolition: Disposal Of Material, Jake B. Schulman
San Luis Obispo High School Ffa Barn Demolition: Disposal Of Material, Jake B. Schulman
Construction Management
San Luis Obispo High School’s FFA program needed to upgrade its deteriorating pig barn, involving three key scopes of work: demolition of the existing structure, proper disposal of materials, and reconfiguration of pig pens and water lines. This project required skills in demolition, framing, and plumbing, all of which our team learned during construction management courses at Cal Poly. The demolition entailed the complete removal of a barn with metal roof panels, wood trusses, joists, studs, and plywood sheathing. Proper disposal of these materials was crucial and will be detailed in this paper, with a brief discussion on demolition and …
Recycled And Waste Glass As A Sustainable Substitute For Aggregates And Cement In Concrete, Griffin Powers Finnane
Recycled And Waste Glass As A Sustainable Substitute For Aggregates And Cement In Concrete, Griffin Powers Finnane
Construction Management
Besides water, concrete is the most widely used material in the world. The production of Portland cement, the most crucial ingredient in a concrete mix, significantly contributes to global carbon dioxide emissions, accounting for 7-8% of the total. The majority of these emissions result from the cement production process, which involves kilns powered by greenhouse gas-producing sources. Additional emissions come from the heavy diesel equipment used to load and haul aggregates to batch plants. Although the construction industry is adopting more sustainable building techniques and materials, the basic concrete mix remains largely unchanged, continuing to contribute heavily to carbon emissions. …
San Luis Obispo High School Ffa Barn Demolition: Demolition, Ryan Reza Manesh
San Luis Obispo High School Ffa Barn Demolition: Demolition, Ryan Reza Manesh
Construction Management
The San Luis Obispo High School FFA program required an upgrade to its swine enclosure including removal of the deteriorating pig barn. This project came in three unique scopes of work: demolition of the existing barn, proper disposal of materials, and reconfiguration of pig pens and water lines. This paper will cover specifically the demolition of the barn.. This phase of the project required skills in framing and plumbing, which our team had absorbed during specific construction management courses at Cal Poly. The reconfiguration included framing and securing a long span of fencing along the northern side of the project …
Design, Estimate, And Cut-Sheet Of Playhouse For Girls Build Summer Academy, Miles Paul Miller
Design, Estimate, And Cut-Sheet Of Playhouse For Girls Build Summer Academy, Miles Paul Miller
Construction Management
This Project-Based-Project was inspired by the Girls Build Summer Academy which is run by Professor Stacy Kolegraff. The camp is a week-long and the group of girls will construct a playhouse from scratch. The camp is to immerse young girls into the construction industry. This senior project is composed of 3 different components which include the Design, Estimate, and Cut-sheet of the playhouse. The project did not have any type of needed funding. This project is aimed to create an in-depth but intuitive set of plans and directions to create the playhouse for the girls. This project’s goal is to …
Gateway Decathlon: Carbon Calculations Of An Offsite Residential Construction, Isaac Robert Rubio
Gateway Decathlon: Carbon Calculations Of An Offsite Residential Construction, Isaac Robert Rubio
Construction Management
This senior project delves into a comprehensive calculation of carbon emissions for both efficiency and sustainability within the realm of modular construction. A material takeoff of the building was performed, allowing for an accurate measurement of materials and their respective EPD (Environmental Product Declaration) values. After material selection, a final carbon calculation of the building was calculated. Carbon emission calculations were performed on the current Revit Model allowing for a full-scale analysis, from Cradle to Gate, of the offsite residential unit. The results show that the total initial embodied carbon emissions of the unit is 9241 (kg-CO2e), representing the total …
Optimizing 3d Printed Concrete Effificeny: A Case Study Of Emergent 3d'S Iterative Process Improvement, Michael Stearns
Optimizing 3d Printed Concrete Effificeny: A Case Study Of Emergent 3d'S Iterative Process Improvement, Michael Stearns
Construction Management
This case study looks into the advancement of 3D printed concrete (3DPC) technology and its application by Emergent 3D, a company dedicated to addressing California's housing crisis through low-cost, sustainable construction. Emergent 3D, which was formed in response to the 2018 Carr Fire, uses 3DPC to quickly and economically design energy-efficient homes. Unlike traditional construction processes, 3DPC constructs buildings or walls layer by layer using computer-generated designs, reducing material and labor expenses. This case study focuses on Emergent 3D's first project, Enterprise Park, which gave them significant insights on improving the 3DPC process. This case study identifies crucial improvements in …
Slo Newman Catholic Center - Holy Monument, Luka Kosor
Slo Newman Catholic Center - Holy Monument, Luka Kosor
Construction Management
The SLO Newman Catholic Center is a Catholic Church that serves the students of Cal Poly San Luis Obispo and Cuesta College. Around 300 students attend Catholic Mass every Sunday here. While searching for a Senior Project, I approached the Priest and Admin staff of this organization and asked if there was anything I could build for them. They informed me they were gifted this tile mosaic of the Lady of Guadalupe they wanted to showcase in their backyard. They asked me to design and build a holy monument that could exhibit this beautiful tile mosaic. After 6 months of …
Feasibility Of Implementing A Construction Project In An International Country, Kristina Poliseri
Feasibility Of Implementing A Construction Project In An International Country, Kristina Poliseri
Construction Management
This paper examines the execution of an international service project involving the construction of a complex system. It explores three distinct approaches assuming a fully designed system: building the system in the U.S. and shipping it internationally, having system pieces constructed entirely in the destination country prior to arrival for assembly, and developing a prototype in the U.S. followed by the construction of a full-scale system in the international country. Each method presents unique advantages and challenges. Building in the U.S. ensures high quality, advanced technology, and meeting tolerances, however, leads to significant fees, shipping costs, and logistical complications. Constructing …
Construction Wellness: Analyzing Mental Health Issues And Solutions For Construction Workers, Joshua Franks
Construction Wellness: Analyzing Mental Health Issues And Solutions For Construction Workers, Joshua Franks
Construction Management
The construction industry is known for its demanding nature, often leading to significant mental health challenges among its workforces. This study investigates mental health issues prevalent in construction, focusing on identifying key stressors and potential protective factors. A mixed-method approach was employed, combining a systematic literature review with a survey distributed to construction professionals. The survey gathered data on job satisfaction, stress, coping mechanisms, and the availability and utilization of mental health resources. Results indicated high levels of job dissatisfaction and stress, with respondents citing poor communication, excessive work hours, and lack of control over their roles as primary stressors. …
Why The Construction Industry Is Falling Behind In Technology Use, Caden Y. Daniels
Why The Construction Industry Is Falling Behind In Technology Use, Caden Y. Daniels
Construction Management
Technology is becoming more impactful in the everyday life of almost every industry across the world. New products are being released every year to allow the mundane processes of work to be streamlined for maximum efficiency, leaving valuable time for the more pressing matters of a company. The construction industry is one of the largest and most essential industries in the world, but it has fallen behind in the use of technology. History has shown us that when new technology is introduced there is almost always some sort of pushback or buffer time for people to adopt. Just in the …
Building 21 Courtyard Barbecue Pit Demolition, Will Riviere
Building 21 Courtyard Barbecue Pit Demolition, Will Riviere
Construction Management
This project intended to demonstrate the process of a full-scope demolition project at a manageable scale. Almost sixteen yards of concrete were to be demolished, including all reinforcing structures within the barbecue. The purpose of this project was to clear space for the impending renovation of Building 21’s courtyard and remove the unsafe barbecue from the busy pedestrian pathway. Sledgehammers were used in conjunction with electric jackhammers to perform the demolition. Rebar from demolition was separated from the concrete and recycled separately from any cementitious materials. Careful attention was given to protecting existing brick beneath the structure, the surrounding area, …
The Challenges Of Building A Mass Timber Single-Family Home: A Case Study, Avery Emma Onan
The Challenges Of Building A Mass Timber Single-Family Home: A Case Study, Avery Emma Onan
Construction Management
This case study explores the various challenges faced by those involved in the pre-construction and construction of a mass timber, single-family home in Central Texas. Using semi-structured interviews, a subcontractor, an owner, a manufacturer, and two construction managers were questioned about their specific challenges with the build. These challenges were solely related to the use of mass timber on the project. In recent years in the United States, mass timber has become an increasingly desired building material to use in a commercial and multi-family residential context. Due to limited information and builder inexperience using mass timber in a single-family homebuilding …
Designing, Estimating, And Building A Deck And Overhang For The Paso Robles Police Department Shooting Range, Nicklaus Amil Zenner, Benjamin Henry Gallagher
Designing, Estimating, And Building A Deck And Overhang For The Paso Robles Police Department Shooting Range, Nicklaus Amil Zenner, Benjamin Henry Gallagher
Construction Management
This paper covers the design, estimating, and construction process by a team of students from Cal Poly to provide a deck and overhang for the Paso Robles Police Department Shooting Range. The project, initiated in the winter of 2024, aimed to provide a durable, functional, and aesthetically pleasing deck and overhang suitable for a barbecue and lounge area. The paper focuses on the design and estimation phases, as well as material procurement and construction. Through meetings with the client, the team developed a design that met the police department's criteria for functionality, durability, and cost. The design process involved collaboration …
Skip The Grid: Navajo Nation Solar Power Project, Nathan Kealy Haub
Skip The Grid: Navajo Nation Solar Power Project, Nathan Kealy Haub
Construction Management
Skip the Grid, an initiative aimed at empowering communities in need was brought to life through the collaborative efforts of California Polytechnic State University San Luis Obispo (Cal Poly) students, industry partners like SOLV Energy, and the educational non-profit organization Heart of America (HOA). This project was a true testament to the power of teamwork and innovation. Our mission was to assist families of school-aged children in the Navajo Nation by providing them with solar energy systems, including batteries and lighting. We aimed to create a lasting impact by equipping these families with essential resources. In addition, we integrated educational …
Gateway Decathlon: Cost Estimation Of An Offsite Residential Construction Unit, Bradley Craig Blakemore Jr
Gateway Decathlon: Cost Estimation Of An Offsite Residential Construction Unit, Bradley Craig Blakemore Jr
Construction Management
This senior project focused on the cost of the materials used for the shell and structure of the Gateway Decathlon modular residential unit. Collectively, the group on the Gateway Decathlon project decided to design and build the structure using mass timber. A material takeoff of the building was performed, allowing for an accurate measurement of structural materials. After material selection, a final cost estimate was by multiplying the selected materials unit price by the total quantity of the material. The material cost estimate calculations were performed on the current Revit Model allowing for a full-scale analysis of the offsite building. …
A Case Study: Impacts Of A Building Retrofit On Employee Efficiency And Productivity, Rigo Zepeda
A Case Study: Impacts Of A Building Retrofit On Employee Efficiency And Productivity, Rigo Zepeda
Construction Management
This case study explores the effects of retrofitting building systems on operational efficiency and employee productivity in the contemporary office environment. As concerns over sustainability and the well-being of employees are now at the forefront of modern workplace design, the retrofitting of outmoded building systems has been seen as an option to enhance energy efficiency and occupant satisfaction. This research paper focuses on the recently retrofitted Performance Contracting office building in Benicia, California. As heating and ventilation systems, and lighting are two big contributors to energy consumption in buildings and comfort, analyzing these systems provided insight into its building performance. …
Skip The Grid: Solar Energy Concepts In Navajo Nation Schools, Dana M. Craighead
Skip The Grid: Solar Energy Concepts In Navajo Nation Schools, Dana M. Craighead
Construction Management
Skip the Grid is a non-profit initiative with a goal of providing solar power to homes with school-aged children in the Navajo Nation. California Polytechnic State University, San Luis Obispo (Cal Poly) partners with SOLV energy, and Heart of America (HOA) to provide approximately 30 homes each year with Goal Zero solar panels, and educate students in the surrounding areas about how solar energy can help power communities. This year, a group of 20 students from departments including Construction Management, Electrical Engineering, Environmental Management and Protection, Mechanical Engineering, and Graphic Communication joined the initiative and traveled to Shiprock, New Mexico …
Can Leadership Classes Help Women In Construction Embrace Vulnerability Early In Their Careers?, Crystal Giselle Martinez
Can Leadership Classes Help Women In Construction Embrace Vulnerability Early In Their Careers?, Crystal Giselle Martinez
Construction Management
This study investigates how a vulnerability lesson, integrated into a construction management university course, impacts women’s comfort levels in showing vulnerability in their early careers. It also examines the perceptions of individuals on the subject of vulnerability prior to taking the class expressing societal norms in relation to vulnerability and leadership in relation to vulnerability. Pre- and post-surveys, utilizing the Likert scale and free responses, were used to gather data from students enrolled in a leadership-focused class at California Polytechnic State University, San Luis Obispo. Findings reveal that while vulnerability is seen as vital for leadership, gender challenges persist, shaped …
Assessment Of Musculoskeletal Disorders (Msds) Risk During The Framing Of A 6' X 8' Wooden Shed Using Traditional Hammers, Maxwell R. Helfman
Assessment Of Musculoskeletal Disorders (Msds) Risk During The Framing Of A 6' X 8' Wooden Shed Using Traditional Hammers, Maxwell R. Helfman
Construction Management
Wood-framed construction will almost always use nails as a connector whether it be for different pieces of wall sections or connecting wall sections to the structure. Nails also act in Shear Walls in different nailing patterns to prevent the panel from splitting. Houses in modern times are usually nailed with nail guns, either with a cord or cordless, which reduces their exposure to Musculoskeletal disorders (MSDs). However, smaller jobs may opt to use traditional hammers instead of nail guns. This study aims to numerically quantify the forces and flexions one puts on the body when performing nailing tasks using a …
Skip The Grid: Pv System Installations In The Navajo Nation, Samuel Varney
Skip The Grid: Pv System Installations In The Navajo Nation, Samuel Varney
Construction Management
The Skip the Grid initiative is a collaborative effort between interdisciplinary California Polytechnic State University, San Luis Obispo students, SOLV Energy, and the non-profit organization Heart of America aiming to strengthen the quality of life for Navajo Nation families. Many of the Navajo Nation’s residents are not connected to the power grid and don’t have access to sustainable alternatives, and this project aims to combat this by installing photovoltaic energy panel systems with lights and a battery storage system in their homes. With the help and guidance of the Consolidated School District near Farmington New Mexico, the project team was …