Digital Commons Network^™

Calculation For Moment Capacity Of Beam-To-Upright Connections Of Steel Storage Pallet Racks, Tuo Wang, Xianzhong Zhao, Yiyi Chen

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Steel storage pallet rack structures are three-dimensional framed structures, which are widely used to store different kinds of goods. For the easy accessibility to stored products, pallet racks are not usually braced in the down-aisle direction. The down-aisle stability is mostly provided by the characteristics of beam-to-upright connections, and the characteristics of upright base connections. In this paper, calculation for moment capacity of beam-to-upright connections is carried out. A mechanical model is presented firstly. Based on the model, moment capacity is related to the failure capacity, directly determined by the failure mode, of the topmost tab of the beam-end-connector and …

Finite Element Modeling Of New Composite Floors Having Cold-Formed Steel And Concrete Slab, Yazdan Majdi, Cheng-Tzu Thomas Hsu, Mehdi Zarei

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

In this research, the structural behavior of a new type of U.S. patented composite floor system is explored through finite element modeling. The new composite floor incorporates cold-formed (light-gauge) steel profiles as the joist on bottom, a corrugated steel deck as the formwork for concrete, a hat channel (furring channel) as the continuous shear connector and finally a concrete slab on top. All steel parts in the system are cold-formed and connected together by self-drilling fasteners. In this study, a comprehensive three-dimensional finite element modeling is performed for the composite floor system. A local bond-slip model is applied to simulate …

Innovative Cold-Formed Steel Framed Shear Wall Sheathed With Corrugated Steel Sheets: Experiments And Dynamic Analysis, Cheng Yu, Guowang Yu, Jie Wang

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Cold-formed steel framed shear wall sheathed with corrugated steel sheets is a promising shear wall system for low- and mid-rise constructions in high wind and seismic zones due to its advantages of non-combustibility, high shear strength, and high stiffness. However recent research projects showed that the corrugated steel sheathing demonstrated low ductility. This paper presents an experimental study aimed at improving the ductility of cold-formed steel shear walls sheathed with corrugated steel sheathing. A method of using opening in the sheathing is employed to improve the shear wall’s ductility meanwhile controlling the damage locations and failure mechanism. A total of …

Bond-Slip Characteristics Between Cold-Formed Metal And Concrete, Yazdan Majdi, Cheng-Tzu Thomas Hsu, Sun Punurai

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Composite action in systems consisting of steel and concrete depends on an effective shear-transfer mechanism between the two materials. Such mechanism for smooth steel surfaces inside concrete will be limited to the bond-slip behavior at the steel/concrete interfaces. This research investigates the bond-slip behavior of galvanized cold-formed (light gauge) steel profiles embedded in concrete. A new innovative pull-out test is presented and global bond-slip curves for different values of concrete strength are obtained from such tests. Next, through an innovative procedure, mathematical equations and a few points from the experimental global bond-slip curves are used to develop a bi-linear local …

Simplified Seismic Design For Mid-Rise Buildings With Vertical Combination Of Cold-Formed Steel And Concrete Framing, X. L. Yuan, L. Xu

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Presented in this paper is a practical approach for the seismic design of mid-rise buildings with vertical combination of cold-formed steel and concrete framing. In current design practice the presence of vertical irregularities on both mass and stiffness inherited in such building structures creates a challenge for the seismic design. Currently, a two stage lateral force procedure prescribed in ASCE 7 is prescribed for evaluating the seismic load if the lateral stiffness of the lower structure of the building is considerably more rigid than the upper one. In the proposed approach the requirement associated with the two stage analysis procedure …

Community College Mission Statements In An Era Of The New Community College Baccalaureate, Kelly Hernandez

Open Access Dissertations

Community colleges have long suffered an identity crisis since their inception. Throughout history, community colleges have shifted their missions due to various environmental forces such as the economic climate and societal needs. By employing qualitative content analysis, this study first investigated the salient themes of mission statements from 295 community colleges belonging to the Southern Association of Colleges and Schools Commission on Schools (SACSCOC), and secondly, explored whether there were major variations in the missions depending on their classification as an associate’s degree-granting institution or as a bachelor’s degree-granting institution. Thirdly, the study revealed how the themes of community college …

The Santa Clara, 2014-11-06, Santa Clara University

The Santa Clara

No abstract provided.

The Pacifican November 6, 2014, University Of The Pacific

All Issues - Student Newspaper, The Pacifican, Pacific Weekly

No abstract provided.

Effect Of Stressed-Skin Action On The Behaviour Of Cold-Formed Steel Portal Frames, A. M. Wrzesien, James B. P. Lim, R. M. Lawson

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

This paper describes six full-scale laboratory tests conducted on cold-formed steel portal frames buildings in order to investigate the effects of joint flexibility and stressed-skin diaphragm action. The frames used for the laboratory tests were of span of 6 m, height of 3 m and pitch of 10⁰; the frame spacing was 3 m. The laboratory test setup represented buildings of length of 9 m, having two gable frames and two internal frames. Tests were conducted on frames having two joint sizes, both with and without roof cladding. It was shown that as a result of stressed-skin diaphragm action, under …

Investigation On Seismic Performance Of Cold-Formed Steel Portal Frames, Yuanqi Li, Zhijian Xu, Yinglei Li, Yunfei Peng

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

A series of monotonous loading and hysteresis loading tests on cold-formed steel portal frames were conducted in this paper. The averaged ductility factor value of tested frames is 3.15 and the strength and stiffness degradation are not obvious during the test. The failure mode of frame is local buckling at column bases followed by local buckling at the top of columns, which lead to the dropping of frame’s load-carrying capacity. Then, the finite element model is developed and the analysis results match well with the test results. The research in this paper indicates that cold-formed steel portal frame has a …

Effect Of Stressed-Skin Action On Optimal Design Of A Cold-Formed Steel Portal Framing System, Duoc T. Phan, Andrzej M. Wrzesien, James B. P. Lim, Iman Hajirasouliha

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Cold-formed steel portal frames can be a viable alternative to conventional hot-rolled steel portal frames. They are commonly used for low-rise commercial, light industrial and agricultural buildings. In this paper, the effect of semi-rigid joints and stressed-skin action are taken into account in the optimal design of cold-formed steel portal frames. A frame idealization is presented, the results of which are verified against full-scale. A real-coded niching genetic algorithm (RC-NGA) is then applied to search for the minimum cost for a building of span of 6 m, height-to-eaves of 3 m and length of 9 m, with a frame spacing …

Structural Strength Of Lapped Cold-Formed Steel Z-Shaped Purlin Connections With Vertical Slotted Holes, J. Liu, L. Xu, S. Fox

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Lapped joints of cold-formed steel (CFS) Z-shaped purlins are extensively used in metal building roof systems. The research that has been carried out so far for these lapped connections is primarily focused on connections with round holes. However, the lapped connections with vertical slotted holes are extensively used in current construction practice to simplify the erection of continuous Z-shaped roof purlins. There are no design guidelines or recommendations available for CFS Z-purlin lapped connections with vertical slotted holes.

Presented in this paper are the results of an experimental study on the structural strength behaviour of lapped CFS Z-shaped purlin connections …

Direct Strength Method For Ultimate Strength Of Bolted Moment-Connections Between Cold-Formed Steel Channel Members, James B. P. Lim, Gregory J. Hancock, G. Charles Clifton, Cao Hung Pham

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Experimental tests have previously shown that the strength of bolted moment-connections between cold-formed steel members, where the connections are formed through an array of bolts in the web, is dependent on the length of the bolt-group. This reduced strength has been observed in tests on portal frame joints as well as over-lapped purlin joints. For a short bolt-group length, in the order of the depth of the section, this paper shows that a reasonable lower bound to this reduced strength can be predicted by using the Direct Strength Method (DSM), modified to include the effect of the bimoment at the …

Lateral Loading Response Of Cfs Framed Shear Wall With Cement Board Panels, N. Baldassino, M. Accorti, R. Zandonini, F. Scavazza, C. A. Rogers

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Shear wall panels are commonly used as lateral load resisting elements to provide stability of the cold-formed steel-framed houses in Australia against wind and earthquake actions. The effectiveness of their lateral resistance behavior is obtained usually by experimental testing although it can also be done by analytical modeling. This paper presents racking test results of steel-framed wall panels with different aspect ratios sheathed with fibre cement board subjected to monotonic and cyclic loading protocol. Performance parameters of the wall panels are obtained from the experimentally observed load-deflection curves using various existing methods and evaluation method is proposed. The evaluation method …

Evaluation Of The Seismic Performance Of Light Gauge Steel Walls Braced With Flat Straps, Iuorio Ornella, Macillo Vincenzo, Terracciano Maria Teresa, Pali Tatiana, Fiorino Luigi, Landolfo Raffaele

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

The development of light weight steel structures in seismic area as Italy requires the upgrading of National Codes. To this end, in the last years a theoretical and experimental study was carried out at the University of Naples within the research project RELUIS-DPC 2010-2013. The study focused on "all steel design" solutions and investigated the seismic behaviour of strap braced stud shear walls. Three wall configurations were defined according to both elastic and dissipative design criteria for three different seismic scenarios. The lateral in-plane behavior of these systems were evaluated by 12 tests performed on full-scale CFS strap-braced stud wall …

Towards Quantifying Beneficial System Effects In Cold-Formed Steel Wood-Sheathed Floor Diaphragms, A. Chatterjee, Y. Xiang, C. D. Moen, S. R. Arwade, Benjamin W. Schafer

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

Cold-formed steel wood-sheathed floor diaphragm system behavior is analyzed from a system reliability perspective. Floor systems consisting of oriented strand board (OSB), cold-formed steel (CFS) joists, tracks and screw fasteners are modeled using shell and spring elements in ABAQUS. (Dassault-Systems ())The models consider typical seismic demand loads, with careful treatment of light steel framing diaphragm boundary conditions and OSB sheathing kinematics, i.e., two sheets pulling apart or bearing against each other at an ultimate limit state, consistent with existing experimental results. The finite element results are used to build surrogate mathematical idealizations (series, parallel-brittle and parallel-ductile) for the critical system …

Design Equations For Tensile Rupture Resistance Of Bolted Connections In Cold-Formed Steel Members, Lip H. Teh, Benoit P. Gilbert

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

This paper summarises and re-examines the authors’ previous research results concerning the tensile rupture resistance of cold-formed steel bolted connections in a flat sheet, in a channel’s web, and in one leg of an angle section. Staggered bolted connections are also included. The fundamental shortcomings of the design equations given in the 2012 North American Specification for the Design of Cold-formed Steel Structural Members are described, and the alternative design equations proposed by the authors are shown. The alternative equations are checked against laboratory test results obtained by the authors and other researchers where the bolts had not been snug-tightened …

Strain And Stress Distributions In Composite Deck Slabs: A Numerical Study, Vitaliy V. Degtyarev

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

This paper describes results of a study on strain and stress distributions in compact and slender composite deck slabs using nonlinear three-dimensional finite element models. The slabs were modeled as flexural members made of steel deck units and structural concrete fillings interconnected at the interface with nonlinear springs representing bond between two materials. The models are capable of accounting for partial interaction between the deck and the concrete, discrete concrete cracking in the slab tension zone, and nonlinear behavior of the materials and the interface. They were validated against published test data and have proved to be effective in predicting …

The Setonian, November 6, 2014, Seton Hall University

2014

No abstract provided.

Ua12/2/1 College Heights Herald, Vol. 90, No. 21, Wku Student Affairs

WKU Administration Documents

WKU campus newspaper reporting campus, athletic and Bowling Green, Kentucky news.

• Prochazka, Tyler. Campus Reacts to US Senate Results – Elections, Politics
• Brown, Leah. The Spirit Makes the Defaulter – Student Financial Aid
• Harney, LaShana. Race Discussed in Student-Organized Forum – Barrett Wright
• Harney, LaShana. Clinic to Provide Legal Services to Students
• Bradley, Erian. Multiplayer Game Serves as Bond for Group – League of Legends, Entertainment
• Cole, Tanner. Looking for Love? 10 Best Places to Hook Up at WKU – Sex
• Parker, Jacob. Partners Bring Peachy Keen Days – Dating
• Midterm Madness Photos – Elections, Politicians
• Jessie, Stephanie. The Kentucky …

Ua12/2/1 College Heights Herald - New Tops On The Block, Wku Student Affairs

WKU Administration Documents

Special homecoming edition of the College Heights Herald.

• Harney, Lashana. Homecoming Theme Based on Conference Move – Conference USA
• Homecoming 2014 Schedule of Events
• Pettway, Shantel-Ann. National Pan-Hellenic Council Homecoming Step Show Inspired by 90s Sitcoms – Fraternities & Sororities
• Eli Young Band to Headline Annual Homecoming Concert
• Voorhees, Jessica. Students, Community Gear Up for Homecoming Parage
• Kirk, Kierstin. WKU Sweethearts Get Engaged – Zach Talton, Madison Schwettman
• Phelps, Rachel. Homecoming Queen to Be Announced at Saturday Game
• Holloway, Kae. Pulitzer Prize Winner Inducted Into Alumni Hall of Fame – Rick Loomis
• Martin, Madison. Jazz Musician Inducted into Alumni Hall …

November 6, 2014, James Madison University

The Breeze, 2010-2019

The Breeze is the student newspaper of James Madison University in Harrisonburg, Virginia.

The Tiger Vol. 108 Issue 36 2014-11-06, Clemson University

Tiger Newspapers

No abstract provided.

Lanthorn, Vol. 49, No. 23, November 6, 2014, Grand Valley State University

Volume 49, July 7, 2014 - June 1, 2015

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

Gazette Writes About Alum And Her Bestselling Novels, Ohio University College Of Arts & Sciences

All Forum Articles

No abstract provided.

Flier, French Economic Presence In The Tampa Bay Area, November 6, 2014, University Of South Florida St. Petersburg. Nelson Poynter Memorial Library

Poynter Library Events

A flier for a talk by Jean- Charles Faust, President of FRAMCO (French-American Business Council of West Florida) and the French Honorary Consul, on the French economic presence in the Tampa Bay area.

The Use Of Artificial Neural Networks To Describe And Predict The Presence Of Harmful Algae In The Indian River Lagoon, Florida, Erin L. Faltin

USF St. Petersburg campus Master's Theses (Graduate)

Harmful algal blooms are a natural phenomenon of growing global concern. Dense blooms of single celled phytoplankton can have wide reaching effects on both the aquatic ecosystem and surrounding economies. This study constructed artificial neural network models of the northern Indian River Lagoon, Florida, using an existing dataset. Models attempted to both describe and predict chlorophyll a, as an indicator of total algal biomass, or Pyrodinium bahamense, a dinoflagellate known to bloom and produce the paralytic shellfish toxin saxitoxin in the lagoon. Descriptive models used current data while predictive models used time-lagged data as input. Further analyses were conducted on …

The Weekly Challenger, November 6, 2014, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The November 6, 2014, issue of The Weekly Challenger.

The Comment, November 6, 2014, Bridgewater State University

The Comment

No abstract provided.

The Stories We Tell: A Qualitative Inquiry To Multiracial Family Storytelling, Mariko O. Thomas

Dissertations and Theses

A narrative inheritance is comprised of the stories told by family members that are received by a younger generation and used to help construct identity. According to the communication theory of identity, identity is formed through communication. Additionally, the storied resource perspective looks at narratives as a major method of creating and maintaining identity. This study looks at the kinds of narrative inheritance concerning race that people in multiracial families receive and possible ways it affects racial identity formation. Findings from 12 semi-structured interviews indicate that narratives of racism, cultural pride, and hardship are prevalent in multiracial families. Additionally, findings …