Architectural Engineering and Construction Science Faculty Research and Publications
Permanent URI for this collection
Browse
Recent Submissions
Item Open Access Discrepancies between Female Student Perception and Reality of the Engineering IndustryKeen, Julia; Salvatorelli, Anna; jkeen; Keen, Julia; Salvatorelli, AnnaDemographic trends predict a shortage of engineers, with women being one group targeted to fill this gap. Although the percentage of engineering degrees attained by women has increased, there has not been an equal increase in the number of women working in the industry. This means that women are either leaving the industry after they enter or not entering at all. The purpose of this study was to identify what can be done in the education of female engineering students to better prepare them for the engineering workforce reality and culture. A survey was conducted to collect information from female architectural engineering students about their perception of the industry. The results were then compared to the actual conditions of the workforce. The goal was to identify areas of discrepancy between perception and reality so that these areas can be addressed before students enter the workforce. The hope is that, with a better understanding of their career environment, women will be better prepared to deal with the issues that may cause them to leave the industry.Item Open Access Hydronics 102 System ComponentsBoldt, Jeff; Keen, JuliaThe article explores the common control devices in closed-loop hydronic systems (HS) namely expansion tanks (ET) and valves. Topics covered include the types of control needed in a hydronic system, the various kinds of ET including compression tanks and bladder tanks, the maximum design pressures for HS, the factors that must be considered when determining the size of a tank including system volume, and the differences between the types of valves including ball, butterfly and globe.Item Open Access Hydronics 101Holtmeyer, Dan; Boldt, Jeff; Keen, JuliaThe article presents a letter to the editor in response to the story "Hydronics 101" in the May 2015 issue, and provides the authors' response to the comments on their work.Item Open Access Slip modulus of cold-formed steel members sheathed with wood structural panelsNorthcutt, Amy L.; Kramer, Kimberly WaggleCold-formed steel framing sheathed with wood structural panels is a common method of construction for wall, roof and floor systems in cold-formed steel structures. Since wood structural panels are attached with screws at relatively close spacing, a certain amount of composite behavior will be present. The benefit of composite behavior is not currently being taken advantage of in the design of these structural systems. While composite effects are present, they are not yet being accounted for in design due to a lack of statistical data. To determine the amount of composite action taking place in these systems, the slip modulus between steel and wood is required. The slip modulus reflects the amount of shear force able to be transferred through the screw connection, to either member of the composite system. This paper presents the results of a study conducted to determine values of the slip modulus for varying thicknesses of cold-formed steel and plywood sheathing. Shear tests were conducted and the slip moduli were determined based on ISO 6891 and ASTM D1761. Compared with data from a previous preliminary study performed by others, the slip modulus values determined from these tests were deemed reasonable. The determination of the slip modulus will lead to the ability to calculate a composite factor. Determination of a composite factor will allow cold-formed steel wood structural panel construction to become more economical due to the available increase in bending strength.Item Open Access LEED-NC version 2.2 rating system applications of common structural materialsMaher, J.E.; Kramer, Kimberly WaggleComprehensive understanding of building materials has been the basis of structural engineering. The rising environmental concern is making sustainability a crucial issue in our society. In creating a sustainable built environment, the architect usually takes the lead role with the mechanical engineer having the key responsibility for energy and water savings. Only recently have structural engineers and civil engineers begun to see the real potential of their contributions. This paper contains information pertaining to the four most common structural materials: reinforced concrete, reinforced masonry, steel, and timber. For each material, the sustainability of the material as defined by the LEED-NC Version 2.2 rating system is discussed. Information is provided on how to attain LEED points for a specific material. Whether the LEED-NC Version 2.2 rating system accurately portrays sustainability of common structural materials or needs further development is discussed in the conclusion. A comparison is provided of the four common structural materials in relation to the rating system.
