Civil and Environmental Engineering Commons^™

Son Care Foundation – Pergola Structure Construction, Jackson Landless

Construction Management

This paper covers the construction process of a pergola structure for the Son Care Foundation in San Luis Obispo, California. The project’s goal in this study is to create a welcoming outdoor space for clients their dogs. Excavating four footings, fabricating custom rebar cages, and pouring concrete using fast-setting mix were all part of the construction efforts. Framing the structure required precise calculations to accommodate for the slope and corner braces. The matching white paint and corrugated PVC roof further achieved the desired aesthetic the client requested. Trial and error, practical experience, and cooperation with local material suppliers and maintenance …

Assessing The Impact Of The Women In Construction Leadership Course And Disc Training On The Construction Industry For Students And Recent Graduates, Amanda E. Mcdowell

Construction Management

This study examined the impact of the Women in Construction Leadership Course, paired with DISC training, on students transitioning into the construction industry. The DISC instrument classifies behaviors into four personality types (i.e., Dominant, Influencer, Steady, Conscientious) and the training helped students identify each personality type to improve their communication skills. Although technical skills are essential for completing daily tasks, effective leadership and communication are crucial to project success. This research explored how DISC training can improve new hires’ perceptions of their abilities to interact and communicate with their project team members. Through a survey of course participants, the study …

Discovering The Effective Actions Of Upstanders And Tackling Implicit Bias In The Workplace: Findings From A Workshop, Jacob H. Defreeuw

Construction Management

This project focused on exploring how both university students and construction industry professionals recognize and respond to opportunities to act as upstanders in workplace settings, particularly in support of underrepresented groups. The research aimed to bridge the gap between current industry practices surrounding implicit bias and the practical realities of advocating for inclusiveness on construction sites and in office environments. To achieve this, surveys were distributed to industry professionals, an in-depth literature review of modern upstander and implicit bias training strategies was performed, and a student-centered workshop was held at the Cal Poly Women in Construction Symposium. The workshop featured …

Hawthorne Elementary Stage Set Construction, Alejandro Gonzalez, Sergio Daniel Manriquez

Construction Management

The Pirate Ship and Playhouse project, undertaken by California Polytechnic State University, San Luis Obispo Cal Poly Construction Management students, aimed to support arts education at Hawthorne Elementary School through the construction of theatrical set pieces for a Peter Pan performance. Initiated by Phil Barlow and guided by Anna Brennen from the school’s staff, the project integrated community service with practical learning in construction management. From initial design and material sourcing to final installation, the team emphasized safety, durability, and aesthetic appeal. Funding and logistical support from local businesses and Cal Poly facilitated the project’s success. This hands-on endeavor not …

Assessing The Impact Of The Women In Construction Leadership Course And Disc Training On The Construction Industry For Students And Recent Graduates, Amanda E. Mcdowell

Construction Management

This study examined the impact of the Women in Construction Leadership Course, paired with DISC training, on students transitioning into the construction industry. The DISC instrument classifies behaviors into four personality types (i.e., Dominant, Influencer, Steady, Conscientious) and the training helped students identify each personality type to improve their communication skills. Although technical skills are essential for completing daily tasks, effective leadership and communication are crucial to project success. This research explored how DISC training can improve new hires’ perceptions of their abilities to interact and communicate with their project team members. Through a survey of course participants, the study …

Evaluating The Barriers To Virtual And Augmented Reality Adoption In The Construction Industry, Hayden C. Werts

Construction Management

Virtual reality and augmented reality technologies have demonstrated the ability to enhance design coordination, safety training, and field accuracy in the construction industry; however, their utilization remains limited. This study examines and assesses the gap between the capabilities of VR/AR and their actual implementation in the construction industry, utilizing a literature review and an analytical survey of 52 construction professionals. Survey results revealed that only 27% of construction managers have utilized VR/AR in their careers, although those with experience in these technologies rated them highly for their ability to reduce errors and improve coordination. Key barriers to adoption included high …

Building Confidence, Building Careers: An Industry-Informed Evaluation Of A High School Aec Camp, Madisen Berube

Construction Management

This study assesses the effectiveness of the Girls Build Summer Academy, an architecture, engineering, and construction (AEC) summer camp for high school girls, and similar programs by gathering and analyzing feedback from industry professionals. The research aims to identify which program elements most successfully inspire interest and build foundational skills for young women considering careers in architecture, engineering, and construction. An anonymous survey was distributed to AEC professionals, some who were familiar with the program. The survey included multiple choice, rankings, and open-ended questions to evaluate areas for improvement and future curriculum development. Findings revealed strong support for interactive learning …

Upstander Behaviors To Combat Implicit Bias, Jakob J. Wilkins

Construction Management

This project investigates how individuals across different experience levels in the construction industry respond to workplace bias, exclusion, and unfair treatment. Rather than focusing on the often-ambiguous term “ally,” this study explores the role of an “upstander,” someone who takes thoughtful, proactive action to support fairness and inclusion. Using a combination of survey data, industry interviews, academic literature, and a participatory workshop at the 2025 Women in Construction Symposium, the study identifies effective upstander behaviors and evaluates their impact. Survey findings revealed that a majority believe implicit bias influences jobsite dynamics and that intervention can shift workplace culture. The workshop …

Skip The Grid: Bringing Solar To The Navajo Nation, Samuel B. Mcclintock Ii

Construction Management

Skip the Grid is a student-driven, interdisciplinary initiative dedicated to improving access to electricity for families of the Navajo Nation. The project focuses on educational equity by addressing barriers to home study, such as insufficient lighting and energy. These issues stem from the Navajo Nation's remote nature and the families' access to resources. In March of 2025, a group of 24 students and faculty from California Polytechnic State University (Cal Poly), representing six different educational departments, traveled to Arizona to partner with the Chinle Unified School District in addressing educational equity in the Navajo Nation. The effort allowed students to …

Shipping Container Library Project: Preconstruction Strategy And Planning, Chris Lochner

Construction Management

This report outlines the preconstruction planning phase for the development of a shipping container library to be deployed to a community in Sub-Saharan Africa. The library is designed as a modular and sustainable solution for delivering access to educational resources. Preconstruction efforts have focused on finalizing design documentation, procurement planning, trade coordination, permitting considerations, and site logistics. While no construction has begun, two 40-foot high-cube containers have been ordered—one for prototyping and one for shipment. One container is currently staged at Tilden-Coil Constructors’ yard in Riverside, California, and the project is approaching the procurement and mobilization phase. All tracking of …

Creating An Off-Site Construction Course, Tyler Steven Meehleis

Construction Management

The construction industry is undergoing a transformation as prefabrication and modular methods become more common across project types. From residential homes to large-scale commercial buildings, offsite construction offers faster timelines, improved quality control, and reduced environmental impact of construction. Despite these advantages, off -site construction has historically been underrepresented in the Construction Management (CM) curriculum at California Polytechnic State University (Cal Poly). While students are well-prepared for traditional project delivery in residential, commercial, and heavy civil sectors, they often graduate with limited exposure to more modern building systems and off-site production techniques. This off-site construction course addresses this gap by …

Cal Poly Leaning Pine Arboretum Gazebo, Tyler Higgins

Construction Management

Located on the north end of California Polytechnic State University’s campus, the Leaning Pine Arboretum gazebo stands as a place of gathering, relaxation, and functionality. Taking the place of a smaller existing structure, this project transforms the area, creating new opportunities and laying a foundation for future growth over the coming years. Along the way, several challenges arose, including design complications, permitting issues, and time constraints. Through this process, it became clear that obstacles were inevitable, and overcoming them taught valuable lessons in teamwork, coordination between multiple parties, relationship building, and project management. From September to December 2024, work continued …

Skip The Grid: Installing Solar Systems For Residents Of The Navajo Nation In Arizona, Joshua Zepeda Montero

Construction Management

An interdisciplinary service-learning program called Skip the Grid provides solar energy systems to Navajo Nation homes without consistent access to electricity. A group of 20 California Polytechnic State University (Cal Poly) students from different majors that include Construction Management, Mechanical Engineers, Business, and Electrical Engineers traveled to Arizona from March 23rd to 27th, 2025, to install Goal Zero solar energy systems on over 40 homes from the Navajo Nation. This project was made possible through the generous support and collaboration of SOLV Energy, Heart of America (HOA), Goal Zero, Chinle High School, and Cal Poly. These solar systems help give …

Designing And Building A Tomato Storage Shed For Slo City Farm, Mark D. Thielmann, Ryan T. Walther

Construction Management

This paper details the design, budgeting, and construction of a tomato shed built by a student team for City Farm SLO during the Spring 2025 quarter. The project aimed to deliver a practical, affordable, and long-lasting structure to support tomato harvesting and storage operations. The team prioritized a design that balanced functionality with simplicity, all while working within a tight budget. The design phase involved multiple iterations in response to changing site conditions and client input, requiring the team to remain flexible and responsive throughout the process. Key milestones included developing an initial layout, sourcing materials, and modifying features as …

Plumbing System Design For Gateway Decathlon, Philip Soo

Construction Management

This senior project focuses on the development of a Sustainable and Efficient Plumbing System for the Gateway Decathlon Modular Housing Unit, a Mass Timber construction. As part of an Integrated Project Design delivery, this project involves a collaborative effort among students from various disciplines, including construction management, architecture, and engineering. Over the past year, teams of students have collaborated to develop architectural drawings, including floor plans, elevations, and system layouts. This project includes the careful selection of plumbing fixtures that align with the performance and sustainability goals of the modular housing unit. In addition, the materials were chosen based on …

Skip The Grid: Energizing Navajo Nation, Eiley Q. Eichten

Construction Management

Skip the Grid is an interdisciplinary service project aimed at providing reliable and clean energy to families living in Navajo Nation. Cal Poly partnered with Heart of America, SOLV Energy, and Nextracker to help bring this plan to fruition. Twenty students were selected to contribute to the planning, coordinating, and fundraising for the project. After the preparation was completed, Cal Poly students joined representatives from Heart of America, SOLV Energy, and Nextracker. The trip commenced with a hands-on, productive five day visit to Chinle, Arizona. The first working day commenced with Cal Poly students attending a total of five schools …

How Mass Timber Supports Sustainability During Construction: An Industry-Based Analysis, Nicholas T. Mayton

Construction Management

As the construction industry explores new ways to reduce environmental impact, mass timber has emerged as a promising alternative to conventional materials. While much of the existing research on mass timber focuses on life-cycle assessments and carbon comparisons, few studies capture insights from professionals directly involved in building with it. This paper analyzes a series of industry interviews with contractors, designers, and sustainability consultants who have experience working on mass timber projects. The aim is to understand how sustainability plays out during the construction phase—not just in theory, but in practice. Using qualitative methods and word pattern analysis, three core …

Prefabrication Of Custom Cat Condos For Son Care Foundation, Jacob Marano

Construction Management

This senior project involved the design and construction of four custom cat condos for the Son Care Foundation. The goal of the project was to enhance the quality of life for cats by creating safe, functional, and enriching enclosures. The process involved developing a conceptual design, coordinating with daycare center staff, refining the final design and materials list, procuring supplies, and executing the build. The final deliverables included four completed condos with individual and shared spaces for 8 to 12 cats in total. Throughout the project, valuable lessons were learned in planning, budgeting, construction techniques, and working with a real …

Skip The Grid: Empowering The Navajo Nation Through Solar Energy, Gerardo L. Luna

Construction Management

Skip the Grid is an interdisciplinary service project through California Polytechnic State University, San Luis Obispo (Cal Poly), aimed at providing sustainable energy solutions to underserved communities. In Spring 2025, I participated as a rooftop safety lead and solar installer in Chinle, Arizona, where our team partnered with SOLV Energy, Goal Zero, and Heart of America to bring solar power to 40 off-grid homes across the Navajo Nation. As a member of Red Team #3, I was directly responsible for ensuring safe ladder setup, supervising rooftop work, mounting solar panels, and managing exterior cable routing for 8 successful installations. Beyond …

Design And Playhouse Plan For Girls Build Summer Academy 2025, Aracely Berber

Construction Management

This project involves the development and execution of a week-long construction camp at Cal Poly aimed at introducing high school girls to the construction industry through the hands-on building of playhouses. This camp is coordinated by a professor in Cal Poly’s Construction Management Department and invites other industry professionals. The initiative not only promotes youth empowerment and gender diversity in the industry but also incorporates a strong educational and technical component. As part of the planning process, a detailed 3D model of the playhouse was created using Autodesk Revit to visualize the structure. Additionally, a materials list was created and …

The Third Annual Hasslein Caed Collaborative, Marianne Nicole Bishai

Construction Management

This paper details the planning, development, and impact of the third annual Hasslein CAED Collaborative Student Competition. The intention of the Hasslein Cup is to engage the students of the five College of Architecture and Environmental Design (CAED) majors in an industry-like scenario. The five majors, Architecture, Architectural Engineering, City and Regional Planning, Construction Management, and Landscape Architecture, make up the workforce of the construction industry, yet there has been very little opportunity for the students to work together and replicate a professional scenario. The competition began from research conducted by Greta Stout, class of 2022, which explored the benefits …

Son Care Foundation - Pergola Preconstruction, Samuel J. Peters

Construction Management

This paper discusses the design and preconstruction aspects of a pergola constructed at Thousand Hills Pet Resort, supporting a non-profit organization called the Son Care Foundation. Founded in 1994 by Jack Gould, the foundation is committed to fostering hope through various programs including mentorship for students, service dog training for PTSD victims, basic pet training, vehicle repair and turnaround, and dog daycare and lodging. This project serves Son Care Foundation’s dog daycare and lodging program, called Thousand Hills Pet Resort. The program was established in 2005, and all profits are used to fund the other programs operated by the Son …

Building Services Engineering May/June 2025

Building Services Engineering

No abstract provided.

Using Hydrologic And Hydraulic Simulations To Predict Near-Term Effects Of Beaver Habitat Restoration On Flood Flows, Luke S. Stewart

Master's Theses

There is a growing need to predict the complex hydrologic and hydraulic effects of beaver-maintained wetlands. This study uses relatively simple inputs and a replicable methodology to predict flood flow impacts of beaver habitat restoration at the site design scale using the engineering industry’s customary hydrology and hydraulic modeling approach. This study focuses on Toro Creek, the primary drainage for a 15.2 square mile watershed on the California Central Coast.

A hydrologic model of Toro Creek watershed was developed in HEC-HMS to approximate saturated soil conditions typical of late-spring flooding events observed in the region. The hydrologic model was calibrated …

Statistical Time-History Response Of Mid-Story Isolated Structures In Linearized Elastic Conditions, Min Thit Khant

Master's Theses

This study presents a statistical analysis of the seismic demand of mid-story isolated structures in linearized elastic conditions. The assumed earthquake database consists of 228 ground motions recorded in California from earthquakes with magnitudes greater than 6. A three-degree-of-freedom modeling approach is adopted, and the seismic demands of the substructure, superstructure, and isolation system are determined for varying isolated mass and stiffness ratios. The seismic demand of mid-story isolated structures at the isolation level is expressed in terms of the response of an idealized isolated superstructure supposed to be on the ground, while the demands on the substructure and superstructure …

Effect Of Household Oil Contamination And Agricultural Soil Contamination On Phyllosilicate Nanocatalyst Performance During Pyrolysis Of Polyolefins, Joey Velasquez

Master's Theses

The effect of household oil and agricultural soil contamination on catalyst performance during polyolefin pyrolysis was simulated on mixed virgin plastic pellets by evaluating contamination influence on mixed plastic degradation temperatures. Three phyllosilicate nanocatalysts including Fulcat435, Fulcat22F and Y-Zeolite were evaluated in this work based on a literature review of catalyzed plastic pyrolysis and these catalysts’ ability to lower plastic decomposition temperature by 50 °C – 100 °C. These findings were confirmed in this research through thermogravimetric analysis of a polyolefin mixture and further developed in furnace experiments containing household oil and agricultural contamination. Household oil contamination deactivated each of …

A Survey Of Industry Professionals On The Role Of Ff&E In Sustainability, Caius T. Toy-Grace

Construction Management

This study is designed to explore how professionals in the construction and design industries perceive the role of furniture, fixtures, and equipment (FF&E) in building sustainability. Although FF&E is often viewed as a minor component of the overall construction process, it has the potential to significantly impact environmental outcomes through material sourcing, durability, and end-of-life recyclability. A survey was distributed to eight professionals in FF&E, construction, and sustainability-related fields. The survey included eight questions, with four multiple choice and four open-ended, designed to gather both quantitative and qualitative insights. Responses were analyzed to determine how often sustainability is considered in …

Bentonite Erosion And Cation Exchange Effects On Hydraulic Conductivity Of Geosynthetic Clay Liners, Grace Paananen

Master's Theses

Geosynthetic clay liners (GCLs) are used in municipal solid waste landfill (MSW) liner and cover systems as an alternative to thick compacted clay layers. Previous field studies have revealed potential for bentonite erosion in GCLs when subjected to wet-dry cycles that occur when GCLs are placed on slopes, covered with a geomembrane, and left exposed without additional soil cover. A laboratory test program was conducted to quantify the effects of bentonite erosion on hydraulic conductivity of sodium-bentonite geosynthetic clay liners and samples subjected to cation exchange treatment in addition to bentonite erosion. This test program determined what level of bentonite …

Effects Of Vertical Reinforcement On The Shear Performance Of Uhpc Deep Beams With Synthetic And Steel Fibres, Hossein Mirzaaghabeik, Sanjay Kumar Shukla, Nuha S. Mashaan

Research outputs 2022 to 2026

This study examines the shear behaviour of ultra-high-performance concrete deep beams (UHPC-DBs) reinforced with three fibre types: 2 % hooked-end (HE) steel fibres, 0.76 % 5D steel fibres, and 0.11 % Forta-Ferro (FF) synthetic fibres. It evaluates the effects of fibre type, fibre content, vertical web reinforcement (ρsv), and shear span-to-depth ratio (λ) on shear capacity. Load-deflection curves, crack patterns, and ρsv strain were analysed, and the optimal ρsv was determined using the particle swarm optimization (PSO) algorithm to maximise shear capacity while minimising costs. Findings reveal that, compared to specimens without ρsv, those with ρsv = 0.38 % exhibit …

A Predictive Model For The Shear Capacity Of Ultra-High-Performance Concrete Deep Beams Reinforced With Fibers Using A Hybrid Ann-Anfis Algorithm, Hossein Mirzaaghabeik, Nuha S. Mashaan, Sanjay Kumar Shukla

Research outputs 2022 to 2026

Ultra-high-performance concrete (UHPC) has attracted considerable attention from both the construction industry and researchers due to its outstanding durability and exceptional mechanical properties, particularly its high compressive strength. Several factors influence the shear capacity of UHPC deep beams, including compressive strength, the shear span-to-depth ratio (λ), fiber content (FC), vertical web reinforcement (ρsv), horizontal web reinforcement (ρsh), and longitudinal web reinforcement (ρs). Considering these factors, this research proposes a novel hybrid algorithm that combines an adaptive neuro-fuzzy inference system (ANFIS) with an artificial neural network (ANN) to predict the shear capacity of UHPC deep beams. To achieve this, ANN and …