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Positioning of anchors for personal fall arrest systems for sloped roofs

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dc.contributor.authorHeidari, Azin, author
dc.contributor.authorOlbina, Svetlana, advisor
dc.contributor.authorGlick, Scott, advisor
dc.contributor.authorAtadero, Rebecca A., committee member
dc.date.accessioned2019-06-14T17:06:01Z
dc.date.available2021-06-10T17:06:51Z
dc.date.issued2019
dc.description.abstractConstruction worker falls account for about one-third of all construction fatalities increasing 53% from 2011 to 2015 with most fatalities in the roofing trade. A personal fall arrest system (PFAS) is an effective means of fall protection and required by the Occupational Safety and Health Administration (OSHA). However, PFAS anchor point placement is an issue evidenced by the number of fatalities caused by incorrect anchor positioning (Hinze and Olbina, 2008). This research looks at a process to create a tool to optimize PFAS anchor points by: 1) Converting OSHA and American National Standards Institute (ANSI) regulations and standards for anchor point positions into computer-readable format; and 2) Developing a tool for optimization of locations of anchor points. A qualified field user performs the tool data input. Data include PFAS features (e.g. lanyard length) and project-related values (e.g. roof height). The tool then looks for the potential anchor locations that satisfy the fall clearance and swing hazard requirements. K-Nearest Neighbor Search (KNNS) algorithm was used as the optimization model for the tool. The tool was developed in Python programming language and was compiled into a standalone computer application with a user-friendly interface. The output of the tool includes optimized anchor points displayed both graphically and numerically. The tool results were validated using the K-fold Cross-Validation method and proved the tool output results to be adequately accurate. The contribution of this research is the development of an automated field-level process for steep sloped roofing companies that would help improve their safety practices.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.identifierHeidari_colostate_0053N_15352.pdf
dc.identifier.urihttps://hdl.handle.net/10217/195314
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectcomputer tool
dc.subjectfall protection
dc.subjectroofing construction
dc.subjectconstruction worker safety
dc.subjectanchor point
dc.subjectpersonal fall arrest system
dc.titlePositioning of anchors for personal fall arrest systems for sloped roofs
dc.typeText
dcterms.embargo.expires2021-06-10
dcterms.embargo.terms2021-06-10
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineConstruction Management
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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