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Office Building
Get PDFThe purpose of this report is to conduct a prescriptive and performance-based fire and life safety analysis of a building. The chosen building is a five-story building with a basement and uses construction type IB, primarily with steel framing with concrete fill over metal deck. The use of the building is manufacturing, assembly area, open concept office space, and storage, and the total area is approximately 104,000 square feet.
The prescriptive analysis covers the building and fire code requirements such as allowable height, stories, and area and all the fire protection systems in the building including the fire sprinkler system, fire alarm system, structural protection system, and egress system. The sprinkler system is an automatic wet sprinkler system supplied by municipal water. The fire alarm is an emergency voice/alarm communication system installed throughout the building and activated by various initiating devices such as water flow, smoke detectors, and pull stations. The structural protection requirements are governed by the construction type and are fulfilled using spray fire resistive material and intumescent paint. The egress system uses two primary interior exit access stairs to egress the building and open floor plans without corridors and some areas with unrated corridors. The building also includes a smoke control system and passive fire protection elements such as rated walls.
The second portion of the analysis is the performance-based analysis. There are three design fire scenarios presented, and one of them was analyzed to determine the available safe egress time.
The first scenario is a fire on the 4th floor open office area with office chairs, tables, and couches. A fire here is hazardous because it would block exit access to one of the interior exit stairs in the building.
The second scenario is a fire occurs in the basement in the warehouse space where a variety of industrial products are stored on closely spaced shelving. This fire is hazardous because of the large amount of fuel present resulting in high heat release, and impact to the structural protection system.
The third scenario is a fire in the second-floor assembly area with a dry Christmas tree near furniture. The smoke produced would fill the atrium and third-floor office area and impact the tenability of the space. This design fire was chosen because it represents a situation with a high fuel load that will impact the ability of the occupants on the third floor to egress.
The performance-based analysis was based on the third scenario. It was chosen because the fire in any portion of the atrium can vertically spread to other floors and affect those occupants. The products of combustion transport and heat transfer are modeled in FDS with the goal of evaluating ASET on the third floor. The RSET on the third floor is evaluated and determined to be 10.5 min. The ASET is based on a visibility level and temperature and is not exceeded at any time in the model. The tenability conditions are assumed to improve after the end of the model.
The prescriptive analysis indicates that the building follows the building and fire codes. The performance-based analysis indicates that the building is adequately designed for the chosen design fire
Thermal Preconditioning Effects On Perforation Propensity Of Transvenous Implantable Cardiac Leads Used For Pacing And Defibrillation
Get PDFThermal preconditioning to simulate shipping, handling and storage conditions did not affect distal tip stiffness values for permanently implantable cardiac leads used for pacing and defibrillation. Leads that were subjected to extreme temperatures and temperature cycling did not show changes in buckle force values compared with control specimens which were maintained at ambient room conditions. Absolute differences between all measurements were small, generally under 0.05 N and were attributable to measurement variability.
Buckle force values are used to assess the propensity of leads to perforate the heart, a rare but potentially serious complication of implantable pacing and defibrillation systems. Since preconditioning and buckle force measurement methods have not yet been standardized and no published studies exist, it was unknown whether and how much thermal preconditioning could affect lead buckle force.
This study involved eight lead models from all four major lead manufacturers and included both pacing and defibrillation leads spanning a range of materials and construction methods. The preconditioning parameters used in the study, such as temperatures and cycle times, were derived from current industry methods.
Knowing whether thermal preconditioning is critical to perforation propensity allows lead manufacturers and regulators to more efficiently direct resources towards ensuring reliability as well innovation. The results of this study can also inform the AAMI working group which is developing industry standards for transvenous pacing and defibrillation leads
Nitrogen Removal And Operations Improvement In Pond Wastewater Treatment Systems
No full textStudy of wastewater treatment ponds at full-scale compared the areal total ammonia nitrogen (TAN) removal rates and specific TAN removal rates of high-rate algal ponds (HRPs) to the TAN removal rates of facultative ponds. The outer high-rate algal pond (HRPO) demonstrated superior specific and areal TAN removal rates compared to the inner HRP and the two facultative ponds. Solids return into the HRPO for a portion of the study period yielded increased volatile suspended solids content but no noticeable increase in TAN removal rate. Nitrification modeling for the HRPO tested multilinear regression, multilinear regression on every second observation of the data set, and a nonlinear Michaelis-Menten regression. The multilinear regression on the full data set explained the most variance with an R2 = 55.9% and the following significant (p-value \u3c 0.05) variables: solar insolation, temperature, and ambient TAN concentration.
Wastewater treatment pond systems are used worldwide as a method for affordable solids and nutrient removal, but these systems can be less predictable due to their reliance on biological processes. This thesis project recorded various water quality parameters and nitrogen species concentrations on a weekly basis from July 2020 to April 2022 to compare pond performance and identify process improvements. Accurately modeling a pond’s performance will better allow operators to save on aeration and coagulation costs while still meeting effluent goals
EVALUATING CORPORATE MARINE PLASTIC POLLUTION REDUCTION PLEDGES: ACHIEVING PLASTIC REDUCTIONS OR CONTRIBUTING TO GREENWASHING
Get PDFThis paper examines major corporations\u27 commitments and performance in reducing virgin plastic production, aligning corporate initiatives with tangible outcomes. It draws on sustainability governance literature and analyzes plastic reduction strategies by industry leaders such as SC Johnson, PepsiCo, Coca-Cola, Borealis, Nestlé, and Unilever. By synthesizing corporate reports and scholarly literature, the research provides an understanding of corporate plastic reduction within the framework of Sustainable Development Goal 14 (SDG 14), which focuses on marine conservation. The study evaluates the alignment of corporate commitments with SDG 14, identifying genuine environmental stewardship and potential greenwashing. It employs three methodologies: transparency, accountability, and science-based targets, assessing the clarity of corporate reporting, responsibility for meeting goals, and effectiveness in achieving plastic reduction pledges. The findings highlight the need for adaptable strategies and resilient commitments to address plastic pollution, offering practical recommendations for enhancing transparency, accountability, and the implementation of science-based targets in corporate plastic reduction pledges
Assessment Of Caloric And Micronutrient Intakes In Female Collegiate Student Athletes
Get PDFNutrition can play a key role in athletic performance. Optimal nutrition can help athletes maintain their overall health and well-being and can contribute to training adaptations, recovery, performance, and injury prevention. Many studies focus on the intakes and importance of macronutrients in athletic performance. However, micronutrient intakes may also play important roles. Therefore, the purpose of this study was to assess the calorie and selected micronutrient intakes of female collegiate student-athletes across a variety of sports. The participants were instructed to complete 3-day food records which were analyzed and compared to their individual nutrition needs. Results of this study indicated that average intakes of all participants for vitamin C (p \u3c 0.0001), vitamin K (p \u3c 0.0008), and calcium (p \u3c 0.0001) were above the recommended intakes. The results also indicated that the average intakes of all participants for calories (p \u3c 0.0001), calcium (p \u3c 0.0001), iron (p \u3c 0.0001), magnesium (p \u3c 0.0001), and potassium (p \u3c 0.0029) were below the recommended intakes. Within team analyses suggested that some teams’ average consumptions for vitamin A and folate were below the recommended intakes. There are several health and athletic related consequences from chronic consumption of calories and the selected micronutrients below the recommended intakes. Recognizing and addressing these inadequate intakes is imperative to help the student-athletes meet their needs through nutrition education, nutrition counseling, funding, and resources. These efforts can help promote the student-athletes’ overall health, well-being, and athletic success
Construction Panel Discussion at Arroyo Grande High School
Get PDFGrace Devaney conducted a panel presentation and discussion on Wednesday, May 15, 2024, at Arroyo Grande High School for 2 architecture and engineering class periods with 5 guest speakers. The guest speakers were asked various questions about their respective careers and organizations, during which students could ask questions if something mentioned sparked curiosity. Each class was provided with flyers, made by Grace Devaney, which included the guest speaker’s names and professions, a QR code to the ACE mentorship program website, and an email followed with a survey to gauge student feedback. The purpose of this project was to expose high school students to the different career opportunities that the construction industry has to offer as well as creating a connection between Cal Poly Construction Management and Arroyo Grande High School for future project collaborations
Miniature Train Engine
Get PDFThis report details the redesign of the Mini Train Prop for the SLO Civic Ballet’s The Nutcracker, aiming to create a lighter, more user-friendly, and easily maneuverable train. The Final Design Review (FDR) includes the design process, manufacturing plan, and justifications for decisions made. Key improvements are reducing the train\u27s weight, automating the fake wheels, and enhancing maneuverability with a neutral pin and lever system. In this report we detail the significant changes since the Critical Design Review (CDR). The implementation covers procurement, manufacturing, and assembly, while design verification ensures compliance with cost, weight, turn radius, and structural integrity specifications. Testing confirmed the redesigned train meets all requirements. The document concludes with project outcomes and recommendations for further improvements. Finally in the appendix a user manual, risk assessment, final project budget, design verification table, and testing procedures can be found
Cal Poly BSAE Brake Caliper
Get PDFIn the past, the Cal Poly Racing Baja SAE team has used off-the-shelf brake calipers for their vehicle. Off the-shelf calipers have been either oversized, resulting in a heavy and hard to package system, or undersized, resulting in an unreliable system that does not provide adequate braking power. The goal of this project was to provide a caliper that meets the requirements of Cal Poly’s Baja SAE team. Our final design consisted of a two piece CNC machined caliper that uses the complex piston seal geometry from an existing mountain bike brake caliper. Using an existing caliper as a reference allowed us to focus more on creating an improved caliper design and improved our chances of our first machined prototype functioning as intended. Ultimately we were able to get our first prototype to function on the Baja SAE car and the design was able to stop the car effectively both in testing and at competition
F56: Rocket Thrust Vector Control
Get PDFThis Final Design Review (FDR) report compiles relevant information regarding the Rocket Thrust Vector Control senior project as sponsored by Ethan Anderson from Cal Poly Space Systems (CPSS). Documented in this report is our progress from the months following our Critical Design Review (CDR) completion. This consists of a brief overview of the design our thrust vector control (TVC) system and its subassemblies with design changes noted, a thorough walkthrough of our procurement, manufacturing, and assembly process for creating our verification prototype (including software), a breakdown of how we verified each of our specifications through inspection and testing and the corresponding results, and a holistic discussion on our entire senior project and recommendations for future work. Included in the appendix will be the TVC system user manual, DesignSafe risk assessment report, final project budget, annotated software export, completed Design Verification Plan & Report (DVPR), and compiled test procedures.
Throughout the course of the design process leading up to the FDR report, we have completed our project. We have modified our design according to updated critical interfaces on CPSS parts and have procured, manufactured, and assembled our components into the verification prototype. The software-based control system has been programmed and calibrated to the full assembly. Our testing has been completed in accordance to our test procedures and all specifications have been identified as passing or failing