Engineering Commons^™

Flexible-Mode Multi-Skilled Resource-Constrained Project Scheduling Problem With Setup Times: Application In The Oil And Gas Industry, Safinaz M. El Dawody

Theses and Dissertations

Turnaround maintenance (TAM) in the petroleum refining sector requires coordinating geographically dispersed project portfolios under stringent resource, schedule, and budget constraints. Conventional scheduling models treat tasks in isolation, failing to account for shared resources, crew fatigue, or inter-site transit. To bridge this gap, this study introduces and empirically validates a Flexible-Mode Multi-Skilled Resource-Constrained Project Scheduling Problem with Setup Times (FM-MS-RCPSP-ST). Applied to a real-world portfolio of 76 TAM projects across five governorates in Egypt, the framework is operationalized through an 11-stage pipeline integrating NSGA-II multi-objective optimization, GIS-based routing, and 500-trial Monte Carlo disruption simulations.

Results demonstrate that incorporating mandatory crew-rest …

From Aspiration To Obligation: A Contractual Sustainability Framework For The Egyptian Construction Industry, Salma Ali

Theses and Dissertations

The construction industry is responsible for approximately 40% of global energy consumption and 35% of total waste generation, making it one of the most significant contributors to the global sustainability challenge. In Egypt, that challenge takes a specific contractual form. Egypt’s construction sector contributes approximately 23% of national energy consumption, yet the survey findings reveal that 63.5% of construction professionals report that sustainability clauses rarely or never appear in contracts, and only 11.5% confirm the presence of enforceable provisions with measurable targets. This gap is structural rather than attitudinal. Competitive procurement penalises voluntary sustainability investment, and without contractual obligation, awareness …

An Integrated Sensor-Fusion Framework For Performance-Based Compensation In Construction, Aly Ayman El-Ashry

Theses and Dissertations

Construction productivity has historically stagnated due to a reliance on subjective labor monitoring and “lagging” performance indicators. This research proposes a novel compensation model with the use of Total Energy Management System (TEMS) to translate labor effort and efficiency into payment incentives with the integration of Internet of Things (IoT) wearables and Statistical Process Control (SPC) charts.

This research addresses the systemic problem of declining construction productivity caused by industry’s inability to objectively quantify human effort. While traditional models rely on post-facto production tallies, a significant research gap exists in real-time physiological labor monitoring. To bridge this, the proposed TEMS …

The Effect Of Music On Construction Labor Productivity, Ayush Khare

Construction Management

Every day the construction industry is looking for ways to improve labor productivity, jobsite morale, and overall project efficiency. Contractors often focus on larger strategies such as scheduling, manpower planning, equipment selection, and material coordination to help projects stay on time and within budget. However, smaller jobsite conditions can also affect how workers perform throughout the day. Music is one of these conditions. On many construction sites, music is already used informally by laborers while they complete physical and repetitive tasks. Even though music is common in construction culture, its effect on productivity and morale is not often measured or …

Skip The Grid: Bringing Renewable Energy To Off-Grid Navajo Homes, Zion Hall

Construction Management

Skip the Grid is an interdisciplinary service-learning project that provides sustainable energy solutions to families with school-aged children living in the Navajo and Hopi Nations. In March 2026, a team of 23 students from five academic disciplines at California Polytechnic State University (Cal Poly) partnered with Heart of America, SOLV Energy, and NextPower to complete the fifth year of the program. The project's purpose was to improve quality of life and support educational success by providing reliable access to electricity, lighting, and refrigeration in underserved communities. Participants were organized into five installation teams consisting of Cal Poly students, faculty, industry …

Thematic Analysis Of Knowledge, Skills, And Abilities Required For Hydrogen Fuel Cell Transit Workforce, Steven Dandurand

Construction Management

The adoption and implementation of hydrogen fuel cell electric buses (FCEBs) in public transit creates opportunities for reducing emissions and a greener future, but causes challenges related to workforce readiness and training. This research uses thematic analysis to analyze interviews with professionals to evaluate the current knowledge and skill levels of transit bus drivers, maintenance personnel, and infrastructure teams, with the goal of identifying knowledge gaps that may cause problems with the implementation of hydrogen buses on a larger scale. Data was collected through a review of transit agency resources, and interviews with drivers, technicians and agencies. The findings indicate …

Skip The Grid: Providing Solar Energy To Navajo And Hopi Families, Derrick Huang

Construction Management

In Spring 2026, the Skip the Grid program sent its 5^th consecutive service project team to the Navajo Nation. Consisting of 4 faculty and 23 interdisciplinary students from various majors such as Construction Management, Mechanical Engineering, Environmental Management, and more, the California Polytechnic State University, San Luis Obispo (Cal Poly) team partnered with non-profit Heart of America, SOLV Energy, and NextPower to install Two 200-watt PV panels, a Yeti 1500X battery, a refrigerator, and two LED lights to families in the Navajo and Hopi Nations in Northeastern Arizona. Within 3 installation days, the Skip the Grid team was able …

City Farm Slo Sheep Pen Improvements, Oscar Rocha

Construction Management

City Farm SLO is a non-profit that focuses on educating under-served and at-risk youth on health, success, and environmental responsibilities. The organization’s mission is accomplished while connecting many people from different backgrounds, which include diverse ethnic, racial, and socio-economic backgrounds. City Farm SLO promotes hands-on learning, providing opportunities for Cal Poly Construction Management students to build on the farm. This senior project consists of the construction of a 50 cubic yards sheep hill, vehicle access gates, side entry gate, front catch pen, and back corral fencing. Outside of the field construction, there was extensive planning to coordinate with the farm’s …

From Ports To Projects: Estimating The Impact Of Supply Chain Volatility And Trade Policy Changes On Construction Material Prices, Ahmed Shiha, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Construction material markets are often reliant on imported commodities. Import tariffs and temporary trade barriers disrupt supply chains, presenting stakeholders with uncertainties regarding how such disruption impacts construction material prices. Despite the plethora of research efforts that examine the effects of economic conditions on construction material prices, the impacts of the import quantities remain understudied. This paper fills this knowledge gap using a multistep methodology. First, the prices of major construction materials and the quantities of the relevant imported commodities are retrieved. Second, the stability of their historical trends was assessed using econometrics-based tests. Third, a nonlinear autoregressive distributed lag …

Tanzania Mbesese Initiative 2026, June Ezzell, Sam Liebman, Noah Beyer, Kate Hamilton, Luke Vollert, Kylee Borgen, Cody Balazs, Meg Mclaughlin

Architectural Engineering

The Tanzania Mbesese Initiative 2026 Senior Project supports a multi-year design-build effort to establish the Same Polytechnic College in Same, Tanzania. This community faces high poverty levels and limited access to higher education, necessitating sustainable infrastructure to support tertiary education. To prepare for the upcoming July phase of construction, an eight-student Architectural Engineering team designed three practical and resilient structures: a Shade Structure, a Water Collection Structure, and a Reusable Scaffolding system. The final design applied structural analysis, modeling, and hand-tool fabrication practice to balance material efficiency with long-term structural durability. The deliverables provide comprehensive construction documentation, complete material takeoffs, …

Small-Scale Rainwater Harvesting: A Sustainable Practice For Single-Family Homes In Southern California, Azzah R. Bensrhir

Construction Management

Southern California is prone to drought and struggles with low water supplies. Los Angeles and San Diego County have enacted outdoor water regulations that aim to reduce the overall reliance on municipal and groundwater supplies. Rainwater harvesting (RWH) is a feasible way for single-family homeowners in Southern California to contribute to water conservation efforts. To determine the feasibility of installing, maintaining, and understanding overall challenges and costs of small-scale rainwater harvesting systems, four interviews were conducted with residents of Los Angeles and San Diego County who have owned and operated a RWH system for more than five years. The results …

Skip The Grid 2026: Off-Grid Power For Hopi And Navajo Families, Xanthus Aurelius Poole Silverstein

Construction Management

Skip the Grid is an interdisciplinary service-learning project that provides sustainable energy solutions to families with school-aged children living in the Navajo and Hopi Nations. In March 2026, a team of 23 students from five academic disciplines at California Polytechnic State University (Cal Poly) partnered with Heart of America, SOLV Energy, and NextPower to complete the fifth year of the program. The project's purpose was to improve quality of life and support educational success by providing reliable access to electricity, lighting, and refrigeration in underserved communities. Participants were organized into five installation teams consisting of Cal Poly students, faculty, industry …

The Use Of Modular Construction To Improve Schedule Efficiency, Brandon Ritchie

Construction Management

The construction industry continues to face growing pressure to deliver projects on tighter schedules with fewer resources. Modular construction has emerged as a delivery method with the potential to improve schedule efficiency by allowing off site fabrication and on site work to occur simultaneously. This research examines how modular construction affects schedule performance compared to traditional construction methods. When modular construction is well coordinated, project schedules will show improved efficiency compared to traditionally built projects. Qualitative interviews were conducted with members of the Whiting Turner team on the Cal Poly Student Housing Project, backed up by a review of schedule …

Sheep Pen Improvements At City Farm Slo, Diego Eliseo Romero

Construction Management

City Farm SLO is a non-profit educational farm that focuses on creating clean produce and educational farm work environments in San Luis Obispo, California. The farm can provide its community with learning programs for the youth, hands-on experience in farming practices, and livestock care. The work was set out for this project across two quarters where we improved the existing sheep pen so that the volunteers and livestock who use the pen can enjoy the area much more comfortably and safely. The overall project scope included several improvements which all required initial designs, coordination with the farm and its volunteers, …

2026 Annual V.E.S.T Hackathon: Improving Gender Inclusivity Of Glove Fitting, Makena E. Fix

Construction Management

Safety gloves are an essential part of field personnel's personal protective equipment (PPE). Gloves protect against cuts, burns, chemicals, and other hazards. Properly fitting gloves reduce the risk of injury by enabling the suitable use of task-specific protection. The 2026 Verifying Everyone’s Safety Together (V.E.S.T) Hackathon was hosted to identify ways in which gloves fit workers differently, and evaluated six different glove types, ranging from woven cut rated to firefighting gloves. To understand experiences faced by workers with their PPE, firefighters were interviewed and discussions were held at the Hackathon. The collaborative event brought industry members and students together to …

Designing And Building Benches For Slo City Farm, Julian Cervantes

Construction Management

The purpose of this project was to design and create multiple small benches for the City Farm SLO during the term of Spring 2026 quarter. This project was specifically intended to be an affordable, pragmatic, and durable project that would last a long time in order to serve the people that visit a comfortable place to sit and come together. In order to achieve the project delivery for these benches the pre-construction of the project started by visiting the city farm to inspect the existing benches and taking the measurements of them in order to shorten them for the use …

Understanding Cmu Construction Sequencing Through Scheduling Application, Tristan J. Roberson

Construction Management

Concrete Masonry Unit (CMU) wall systems are used very often in all types of construction including commercial and residential. With this said, the scheduling logic behind their installation can often be unclear for students and people new to the industry. The purpose of this project is to analyze CMU construction sequencing and demonstrate how it integrates within an overall project schedule. This study was conducted using interviews with industry professionals, review of CMU manufacturing processes, and development of a simplified Critical Path Method schedule in Microsoft Project. Information from CMU professionals regarding manufacturing processes and lead times were incorporated based …

Skip The Grid: Installing Solar Systems In The Navajo Nation, Joey Massey

Construction Management

Skip the Grid is a student led interdisciplinary project that aims to bring sustainable solar energy to families in the Navajo Nation who lack reliable power at home. The 2026 Skip the Grid trip was the fifth consecutive year of the joint effort between California Polytechnic State University (Cal Poly) students across multiple departments, Heart of America (HOA), SOLV Energy, and Nextpower. Over the three working days the 5 teams installed Goal Zero Solar Systems in 50 homes on both the Navajo Nation and Hopi Reservation. These systems brough power, light, and refrigeration to families, enhancing their quality of life …

Ada Concrete Walkway Improvements At The Gala Pride And Diversity Center, Jonathan A. Mintz, Manuel Gonzalez

Construction Management

This paper presents the planning, design, and construction of an accessible concrete walkway completed for the GALA Pride and Diversity Center in San Luis Obispo, California. The project addressed an accessibility gap between the center's front entrance and rear parking lot through a combination of site preparation, concrete work, retaining wall construction, and supporting improvements. Construction was managed around the active events schedule while staying within the constraints of a nonprofit budget. Challenges encountered during the project included scope changes, material selection decisions, and client coordination. The completed walkway provides a safe and stable path for all visitors and directly …

The Efficiency Of Residential Modular Construction, Alina Viola Dziuk

Construction Management

This study examines the efficiency of permanent modular construction in the residential multifamily sector framed with steel in the western United States, with a particular focus on labor productivity, materials, project scheduling, and cost performance in California. Research was conducted through five interviews with production managers from U.S.-based modular manufacturing companies. Results indicated that modular construction improves labor, material, time, and cost efficiency. Overall, the qualitative data gathered from interviews and the literature review suggest that modular construction offers a practical solution to California’s housing shortages, declining labor pool, and rising construction costs while improving overall project efficiency and productivity. …

Self-Healing Concrete In Compression With Crystalline Admixtures, Nathaniel Paul Warfield

Construction Management

The construction industry is steadily pursuing sustainable and regenerative materials that extend service life and reduce maintenance requirements. Self-healing concrete containing crystalline admixtures represents one such technology. This study evaluated the compressive strength performance of a commercially available high-strength concrete with and without a crystalline self-healing admixture. Three 6-inch by 12-inch cylinders were cast using Quikrete High Strength Concrete. One cylinder served as the control specimen, while two cylinders contained Penetron Admix at approximately 1% of cement weight. One admixture cylinder was intentionally cracked after 14 days to allow time for healing before testing. All specimens were tested in compression …

Building Services Engineering May/June 2026

Building Services Engineering

No abstract provided.

Hvac Ductwork Lab Series - New Curriculum, Dean Cavanna

Construction Management

This senior project developed an HVAC Ductwork Lab Series to support Cal Poly Construction Management’s new mechanical coursework during the semester conversion. The main goal is to connect classroom instruction with practical fieldwork. The project addresses the need for applied learning materials that help students understand how duct design, fabrication, installation, and support affect system performance. The curriculum was created through a sequence of planning, model development, video-supported instruction, student handout design, and instructor guide preparation. The final lab series includes three activities: SimScale airflow modeling of a straight duct, direct 90-degree elbow, and curved 90-degree elbow; fabrication and connection …

Greek Row At Cal Poly: Addressing Student Housing, Neighborhood Conflict, And Town-Gown Relations, Christopher Linn Green

Construction Management

This study evaluates whether centralized Greek housing near Cal Poly could serve as a long-term planning solution for reducing neighborhood conflict, improving student housing opportunities, and creating a more organized environment for fraternity and sorority life. The research was developed in response to ongoing concerns in San Luis Obispo involving student housing pressure, fraternity activity in residential neighborhoods, and code enforcement challenges. Two surveys were used to gather stakeholder perspectives. One survey of Cal Poly students and one survey of individuals who work in San Luis Obispo. Student responses showed strong support for a centralized Greek Row, with most respondents …

Economic Feasibility Of 3d-Printed Concrete Walls Vs. Traditional Framing Systems, David Hawk

Construction Management

The construction industry faces mounting pressure to adopt more efficient building technologies. 3D-printed concrete (3DCP) has emerged as a promising alternative to wood-frame wall systems, offering reduced labor costs, shorter schedules, and lower long-term maintenance expenses. This study evaluates the economic feasibility of 3DCP versus traditional framing across three project scales — single-family (2K SF), multifamily (20K SF), and large development (100K SF) — using mixed-methods combining quantitative cost data with qualitative industry interviews. Results indicate 3DCP becomes cost-competitive at approximately 20,000 SF of wall area, with a decisive advantage at 100K+ SF ($26–$34/SF vs. $29–$45/SF traditional). Equipment mobilization ($8–$18/SF) …

International Construction In El Salvador, Daniel Roberts

Construction Management

My senior project focused on participating in international construction operations in El Salvador through hands-on involvement in the construction of a steel warehouse facility and a small residential home. The project emphasized structural concrete placement, field coordination, construction sequencing, and adaptation to regional construction practices. Work included assisting with concrete foundations, slab preparation, reinforcing steel placement, masonry work, and general site coordination activities. The experience provided practical exposure to labor productivity, material availability, scheduling challenges, and construction methods commonly used in developing regions. The project also highlighted the importance of communication, problem-solving, and flexibility when working in an international construction …

Developing A Preparation Manual For The Asc Region 6 & 7 Reno Competition, Addyson Mae Demasters

Construction Management

The Associated Schools of Construction (ASC) Region 6 & 7 Competition is one of the most prestigious student construction management competitions in the United States. Success in the competition requires technical knowledge, effective communication, time management, and strategic preparation. The purpose of this senior project was to develop a comprehensive Competition Preparation Manual for future Cal Poly Construction Management students competing in the ASC Reno Competition. The manual was created through the collection and analysis of information from previous competitors, team captains, competition retrospectives, and the author's personal experience participating in ASC Reno competitions. Surveys were sent to students in …

Skip The Grid: Bringing Power To The Navajo And Hopi Nation, Benjamin R. Narciso

Construction Management

Skip the Grid is an interdisciplinary service-learning project that provides sustainable energy solutions to families with school-aged children living in the Navajo and Hopi Nations. In March 2026, a team of 23 students from five academic disciplines at California Polytechnic State University (Cal Poly) partnered with Heart of America, SOLV Energy, and NextPower to complete the program's fifth year. The project's purpose was to improve the quality of life and support educational success by providing reliable access to electricity, lighting, and refrigeration in underserved communities. Participants were organized into five installation teams consisting of Cal Poly students, faculty, industry partners, …

U.S. Army Corps Of Engineers Information Session At California Polytechnic State University, Jack Durham Abernathy

Construction Management

This paper presents a detailed analysis of an information session coordinated by Jack Abernathy with the United States Army Corps of Engineers (USACE) on May 14, 2026, at California Polytechnic State University San Luis Obispo. An Army Corps of Engineers info session creates a critical step for undergraduates where they have a professional environment to network with industry professionals and explore unique career paths that may have not been previously considered. The presentation exposed attendees to the history of the Corps of Engineers, employee occupations, and USACE’s varying mission sets. A representative from the USACE Sacramento District brought forward professional …

How Modular Construction Techniques Can Be Beneficial To The Nuclear Construction Industry, Samuel Lawrence Maurer

Construction Management

Nuclear energy will soon be needed to supply sustainable and clean power to companies that work with Artificial Intelligence and Quantum Computing. Across the world, lots of large-scale nuclear power plants that have been recently constructed have had many issues, such as cost overruns, schedule delays, permitting issues, and more. The purpose of this project is to examine how modular construction, specifically in the form of Small Modular Reactors (SMRs), can positively impact the nuclear construction industry and potentially reduce some of the common issues that these large-scale nuclear power plant projects typically face. The findings suggest that the use …