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Lopez Del Puerto C.,University of Puerto Rico at Mayaguez | Mrozowski T.L.,Michigan State University | Kruth L.F.,United States Steel Corporation | Schlafly T.J.,American Institute of Steel Construction | Bas O.I.M.,University of Puerto Rico at Mayaguez
ASEE Annual Conference and Exposition, Conference Proceedings | Year: 2015

The paper presents the results of a collaborative effort between two US universities, The American Institute of Steel Construction (AISC) and a steel fabricating corporation to develop and implement a bilingual (English and Spanish) safety training program on warehouse worker hazards for structural steel fabricating and supply companies. Structural steel fabricators receive structural steel material, fabricate structural elements for steel framed buildings and bridges and then ship fabricated material to projects. Steel service centers purchase material from steel mills and distribute steel to structural steel fabricators. Workers in structural steel fabricating and supply companies are at risk of fatal and non-fatal injuries. In addition to exposure to common warehouse worker hazards in other industries, structural steel warehouse workers are exposed to risks related to the large, heavy and variable nature of the steel material they handle. Furthermore, some warehouse workers employed in structural steel fabricating and supply companies speak Spanish as their native language and have limited English fluency that puts them and their co-workers at an increased risk of fatal and non-fatal injuries. Structural steel warehouse workers face many barriers to receiving adequate safety training that is in a language and manner that workers can understand. The structural steel fabricating and supply industry includes many small companies that are geographically distributed among the United States and may lack the resources to develop and implement adequate training programs for their workers. When training is available, it is often offered in English which limits the Spanish-only worker's ability to understand the training and may increase the risk of injuries due to employers mistakenly believing that workers are trained to safely perform their duties. In order to address the barriers to adequate training, the research team successfully obtained a training grant from the Occupational Safety and Health Administration (OSHA) to develop an English and Spanish Warehouse Worker training curricula for use with worker training. The training consists of peer to peer activity based learning. The training covers potential hazard exposures that flow from warehousing and processing tasks such as off-loading and loading materials, movement of material by overhead crane, forklift, loaders or by hand, falls from equipment or loads, struck by or caught between accidents, musculoskeletal injuries due to lifting, bending or working overhead, electrical equipment operation and maintenance requiring safe practices and lock-out/tag-out, and chemical processes. Educational materials consist of a six contact hour worker training which includes activity based learning, PowerPoint presentations, demonstration materials, trainee workbooks and a learning outcomes assessment. This paper contributes to the body of knowledge by highlighting the results of a partnership between academia, a professional society and a company to develop and implement a safety training program with the common goal of decreasing the number of fatal and non-fatal injuries among structural steel warehouse workers. The paper concludes with recommendations for those interested in forming partnerships to develop and implement training programs. © American Society for Engineering Education, 2015.

Schlafly T.J.,American Institute of Steel Construction | Miller D.K.,Lincoln Electrical Co.
Welding Journal | Year: 2016

AWS D1.1/D1.1M:2015, Structural Welding Code ? Steel, has undergone several changes and now is ready for implementation. Previous codes prohibited wrapping fillet welds around opposite sides of a common plane, which had the side effect of preventing seal welds from being deposited. The new revised code now permits wrapping welds to opposing planes where contract documents indicate welds are to be continuous. D1.1 now provides some limited conditions where non-fusible backing can be used with pre-qualified joint details. New base metals and grades have now been added to Tables 3.1 and 3.3. notable additions include ASTM A1085, A91 Grade 70, ASTM A501 Grade B, and ASTM A1018 structural steel Grades 30-40 were moved from Group II to Group I. provisions regarding splices of members and splices of elements of members have been revised to respond to frequent questions and fabrication conditions. The fatigue provisions for non-tubular members have been updated.

Arber L.,American Institute of Steel Construction | Wang M.,Stanford University | McManus P.,S.E Martin Martin Wyoming
Engineering Journal | Year: 2015

This paper presents tabulated compressive strengths of double-tee members, which are comprised of two WT members oriented with their flanges back to back (referred to as "2WTs" or "double WTs" hereafter). The benefits and typical use of these members are described, including schematic details of connection designs. All WT members built from the WT7 and WT6 series are included in the table, which gives available strengths in both ASD and LRFD. Slenderness effects and the effects of shear deformations of intermediate connectors are taken into account. Copyright © 2015 by the American Institute of Steel Construction.

Geschwindner L.F.,American Institute of Steel Construction
Engineering Journal | Year: 2010

The 2005 AISC Specification for Structural Steel Buildings includes a stiffness reduction factor, tb, in Appendix 7 to be used in the direct analysis method to account for the presence of residual stresses and their influence on the second-order effects of frame behavior. The 2005 Commentary includes a stiffness reduction factor, ta, to be used along with the effective length nomograph to account for the influence of column inelasticity due to residual stresses on effective length. These two stiffness reduction factors are intended to account for the same effect yet they are different. This paper provides the background for these two factors, and it will demonstrate that tb is the more correct stiffness reduction factor. The 2010 AISC Specification will recommend its use with both the direct analysis method and the effective length nomograph.

Geschwindner L.F.,American Institute of Steel Construction
Engineering Journal | Year: 2010

The use of φ = 0.9 and Ω = 1.67 with the provisions in Section F13.1 of AISC 360-05 (AISC, 2005) to account for the reduction in flexural strength for a beam with holes in the tension flange has been questioned several times since the publication of the Specification for Structural Steel Buildings in 2005. The intent of this paper is to review and provide justification for the use of the resistance/safety factors within the 2005 Specification provisions for the impact on flexural strength of holes in the tension flange.

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