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Articles 1 - 30 of 175
Full-Text Articles in Engineering
Water Resources Systems Planning And Management, Piro Zoga, Aida Bode, Ramiz Balla, Nevton Kodhelaj, Spartak Kucaj
Water Resources Systems Planning And Management, Piro Zoga, Aida Bode, Ramiz Balla, Nevton Kodhelaj, Spartak Kucaj
UBT International Conference
The most fundamental human needs of water are for drinking, cooking and personal hygiene. In order to fulfill these needs, the quality of the water used should cause no risk to human health. The quality of the water in nature also affects the condition of ecosystems all living organisms depend on. At the same time, humans use water bodies as convenient sinks for the disposal of domestic, industrial and agricultural wastewaters. This, of course, degrades the quality of those water bodies. Water resources management involves the monitoring and management of water quality as much as the monitoring and management of …
Computer Aided Analysis Of Kinematics And Kinetostatics Of Six-Bar Linkage Mechanism Through The Contour Method, Qelaj Mehmet, Likaj Ramë
Computer Aided Analysis Of Kinematics And Kinetostatics Of Six-Bar Linkage Mechanism Through The Contour Method, Qelaj Mehmet, Likaj Ramë
UBT International Conference
In this paper is presented a six-bar linkage mechanism of the pump for oil extrusion. In this mechanism are introduced even higher kinematic pairs. Dimensions and other incoming links will be adopted as necessary. For the six-bar linkage mechanism will be carried out the kinematic analysis and for all linkages will be presented the displacement, velocity and acceleration. The analysis will be performed by MathCad software, while kinetostatic analysis will be carried out using Contour Method, comparing results of two different software‘s MathCAD and Working Model. The simulation parameters will be computed for all points of the contours of mechanism.
The Surface Distribution Of Oil Spills, The Environmental Status Of The Visoka Oilfield, Its Rehabilitation Ways: Case Study, Nevton Kodhelaj, Aida Bode, Piro Zoga, Nevina Koja, Esmeralda Zeqo, Dulian Zeqiraj
The Surface Distribution Of Oil Spills, The Environmental Status Of The Visoka Oilfield, Its Rehabilitation Ways: Case Study, Nevton Kodhelaj, Aida Bode, Piro Zoga, Nevina Koja, Esmeralda Zeqo, Dulian Zeqiraj
UBT International Conference
Visoka oilfield was explored in 1963 through the well G-622. In this oilfield had been drilled more than 170 production wells. Through all this years of its exploitation, mainly because of the outdated technology, the environmental pollution reached really dramatic values. The pollution extends on the Visoka village, affecting so the life for the entire community. The oil spills, the gas emissions and the formation water affected and polluted and ―k illed‖ the Gjanica River, its delta and the Adriatic coast in the Semani beach. Due to the technology and the completely wrong policies, used in the past, the wells …
Nanotechnology And His Effects In Medicine, Hatixhe Bilibashi
Nanotechnology And His Effects In Medicine, Hatixhe Bilibashi
UBT International Conference
Nanotechnology is a great revolution in the field of information technology that has effects on almost every aspect of the human society nowadays. It is one of the technologies with huge potentials in many directions. Nanotechnology can be defined as the manipulation, precision-placement, modeling and manufacture of material at the nanometer scale (One meter consists of 1 billion nanometers) ( 10〗^(-9) of a meter). ).Therefore nanotechnology can help save the lives of many people. Main fields in medicine where nanotechnology can be found are the control and prevention of cancer, diagnostication of the drug dependance, diagnostication of the diabet es, …
Material Balance Adjustement In Raw Material Processing, Migena Hoxha, Piro Zoga, Aida Bode
Material Balance Adjustement In Raw Material Processing, Migena Hoxha, Piro Zoga, Aida Bode
UBT International Conference
Circuit of one processing plant was studied in order to adjust the mass balance. The granulometric composition of the streams that belong to grinding and classifying processes was analysed, while the chemical content was determined only at the streams related to separation process. Three connection matrixes are considered in this paper, one corresponding to the size fraction equations, the second corresponding to the chemical content measurements and the third, the solid flow rate balance. The technique used consisted of filtering all the data by a weighted least-squares procedure. Then running the output data in a custom designed feature of the …
Mechatronics And Mechatronics Management, Peter Kopacek
Mechatronics And Mechatronics Management, Peter Kopacek
UBT International Conference
Mechatronics bringing together a number of technologies mechanical engineering, control engineering, electrical engineering, electronic engineering,computer technology. Mechatronics as an umbrella integrates areas of technology like measurement systems and sensors, actuation systems and drives, systems behavior, control, and microprocessor systems. Education in Mechatronics is highly interdisplinary. Graduates with a BSc or MSc degree in Mechatronics get usually higher or medium management positions in Industry requiring some knowledge in management. Therefore an education program ―Mechatronics Management‖ was developed by an international consortium and implemented at UBT in Prishtina
Dynamic Modeling And Analysis Of Propulsion Effect Of 3 Dof Robot, Ahmet Shala, Xhevahir Bajrami
Dynamic Modeling And Analysis Of Propulsion Effect Of 3 Dof Robot, Ahmet Shala, Xhevahir Bajrami
UBT International Conference
Dynamical Modeling of robots is commonly first important step of Modeling, Analysis and Control of robotic systems. This paper is focused on using Denavit-Hartenberg (DH) convention for kinematics and Newton-Euler Formulations for dynamic modeling of 3 DoF - Degree of Freedom of 3D robot. The process of deriving of dynamical model is done using Software Maple. Simulations are done using Matlab/Simulink for analysis of propulsion effect under Earth gravity when First Link rotates with 1000 rpm, second Link can move free in vertical direction and Third Link can rotates free around their rotations axle. Simulations results shows very good propulsion …
Advancement Of The Plastering Machine, Bujar Ademi, Peter Kopacek
Advancement Of The Plastering Machine, Bujar Ademi, Peter Kopacek
UBT International Conference
Automation of water flow at plastering machines is a solution which serves the process of plastering, to adhere international standards.Automation of water flow by taking signals from the condition of the material depending on humidity. So its output is used to influence the increase or decrease of the amount of water flow in the valve.Water flow automation is a system which consists of several components in which the already, develop different processes. To realese the feedback we need a sensor which is built by piezoelemnt in which we have the phenomenon of the frequency. With which we have to create …
The Effectiveness Of The Use Of Solar Panels In Hotels Of Durres Area, Asllan Hajderi, Shkelqim Gjevori
The Effectiveness Of The Use Of Solar Panels In Hotels Of Durres Area, Asllan Hajderi, Shkelqim Gjevori
UBT International Conference
In the present study is analyzing the case of the application of solar energy with vacuum tube collectors for heating water for sanitary needs in hotels of Durres areas. In recent years there has been a special interest by the leading authorities to the EU countries and the U.S., for the use of renewable energies in general and solar energy in particular. This is mainly related with the reduction of environmental pollution from gas CO2, which directly influences the greenhouse effect and global warming. Unlike other forms of renewable energy, like wind turbines, photovoltaic panels and biomass usages, the use …
Research Of Agronomic And Quality Traits Of Winter Barley Varieties (Hordeum Vulgare L.) Under Growing Conditions In The Republic Of Kosovo, Nexhdet Shala, Bakir Kelmendi
Research Of Agronomic And Quality Traits Of Winter Barley Varieties (Hordeum Vulgare L.) Under Growing Conditions In The Republic Of Kosovo, Nexhdet Shala, Bakir Kelmendi
UBT International Conference
The object of this paper is the research of agronomic and quality trains of winter varieties (hordeum vulgare L.) their adaptability and specific reactions towards growing conditions in the Republic of Kosovo. During three year trails on localities in Dukagjini area and area of Kosovo we researched 5 winter barley varieties. Environment has been explored together with estimation of significant parameters of grain yield, hectoliter weight, protein and starch content. Impact of year, location and variety on grain yield, hectoliter grain weight, protein and starch content has been estimated by analysis of variance. Environmental effects of planting barley cultivars in …
Urban Waste Water Discharges And Their Treatment: Case Study Waste Water Treatment Plant Of Kavaja (Wwtpk), Aida Bode, Nevton Kodhelaj, Piro Zoga, Doriana Xhulaj
Urban Waste Water Discharges And Their Treatment: Case Study Waste Water Treatment Plant Of Kavaja (Wwtpk), Aida Bode, Nevton Kodhelaj, Piro Zoga, Doriana Xhulaj
UBT International Conference
WWTPK is the first plant built sewage purification in the Republic of Albania (RA). This plant it is placed in the Kavaja region, district of Tirana. For this is an important area sewage treatment and waste water treatment according to the standards of the Ministry of Environment, Forestry and Water Management (MoE) in Republic of Albania and not directly discharged untreated in nature. In order to determine productivity of the IPUZ and to predict the future of the operation, the results of the analysis of BOD, COD, SS are produced. According to chemical analyzes carried out in the period from …
Definition Of Common Conventions For Education Of Cfs System Design, Semih Göksel Yıldırım
Definition Of Common Conventions For Education Of Cfs System Design, Semih Göksel Yıldırım
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
CFS system of which can be used in the field of low rise residentials, are included in industrialised building systems due to installation principles of the system. Widespreading of the usage of an industrialised building system depends on the widespreading of the system design datum. Therefore, education of CFS system design is required in order to increase the system usage. Also, awareness of CFS system in the levels of public authorities and technical staff can be increased by education. The aim of this paper is to develop an education model for CFS system design by using open building concept. The …
Steel Deck Institute Standards For Composite Steel Floor Deck-Slabs, Thomas Sputo
Steel Deck Institute Standards For Composite Steel Floor Deck-Slabs, Thomas Sputo
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
As an ANSI accredited standards developer, the Steel Deck Institute (SDI) has developed an updated and expanded version of its “Standard for Composite Steel Floor Deck-Slabs”, ANSI/SDI C-2011 and a new standard, “Test Standard for Composite Steel Deck-Slabs”, ANSI/SDI T-CD-2011. These two standards reflect the current state-of-the-art for the design and testing of composite steel deck-slabs where the steel deck provides the tensile reinforcement for the slab. Substantial changes in the ANSI/SDI-C-2011 Standard include increased information regarding the use of fibers for concrete crack control purposes and concrete serviceability, consideration of moving and concentrated loads, and use of updated shear …
Self-Shape Optimisation Of Cold-Formed Steel Columns, Benoit P. Gilbert, Timothee J-M Savoyat, Lip H. The
Self-Shape Optimisation Of Cold-Formed Steel Columns, Benoit P. Gilbert, Timothee J-M Savoyat, Lip H. The
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper presents the optimisation of cold-formed steel open columns using the recently developed self-shape optimisation method that aims to discover new profile shapes. The strength of the cold-formed steel sections is calculated using the Direct Strength Method, and the rules developed in the present work to automatically determine the local and distortional elastic buckling stresses from the Finite Strip and constrained Finite Strip Methods are discussed. The rules are verified against conventional and optimum sections yielded in this research, and found to accurately predict the elastic buckling stresses. The principles behind the self-shape optimisation method are summarised herein and …
Numerical And Experimental Investigation Of Cold-Formed Steel Double Angle Members Under Compression, W. F. Maia, L. C. M. Vieira Jr., B. W. Schafer, M. Malite
Numerical And Experimental Investigation Of Cold-Formed Steel Double Angle Members Under Compression, W. F. Maia, L. C. M. Vieira Jr., B. W. Schafer, M. Malite
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper presents a numerical and experimental study of double angle members connected by batten plates under concentric and eccentric axial compression. The number of batten plates is varied to study the influence on the nominal axial strength. Numerical analyses are able to accurately predict the behavior and strength found in the experiments, except for long columns under eccentric axial compression where the composite section failed in major-axis flexural buckling. Two design hypotheses are compared to the results obtained: (i) non-composite action (no interaction between angles), with only local, flexural, and flexural-torsional buckling considered; (ii) composite action (full interaction between …
Aisi Standards Update, Helen Chen, Roger Brockenbrough, Richard Haws
Aisi Standards Update, Helen Chen, Roger Brockenbrough, Richard Haws
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Since the publication of the 2007 editions, changes and additions have been made to AISI design and construction standards. Accordingly, new editions of the standards, or supplements to existing standards, will be published to formalize these changes. This paper provides an overview of the major changes and additions to those standards.
The 1st Student Competition On Cold-Formed Steel Design, Cheng Yu, Cristopher Moen
The 1st Student Competition On Cold-Formed Steel Design, Cheng Yu, Cristopher Moen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The first Student Competition on Cold-Formed Steel Design (CFS Competition) was held at the University of North Texas in 2011. The CFS Competition was initiated by Cheng Yu through a National Science Foundation CAREER award. The objective of the CFS Competition is to promote higher education in coldformed steel structural design and to encourage students to use creative thinking skills to solve engineering problems. The subject of the first CFS Competition is to design an optimal thin-walled cold-formed steel cross section under several pre-defined restrictions. The CFS Completion received total 78 entries from students in 5 different countries. The judging …
Innovative Cross-Section Shapes For Built-Up Cfs Columns. Experimental Investigation, Iveta Georgieva, Luc Schueremans, Lincy Pyl, Lucie Vandewalle
Innovative Cross-Section Shapes For Built-Up Cfs Columns. Experimental Investigation, Iveta Georgieva, Luc Schueremans, Lincy Pyl, Lucie Vandewalle
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Innovative cross-section shapes for built-up columns from cold-formed steel (CFS) profiles are evaluated experimentally. The goal is to obtain highly stable members with reduced sensitivity to bucking effects and initial imperfections, and therefore, higher strength-to-weight ratios. The columns have been designed following the principles of the direct strength method [1], with the ambition to exclude (or reduce) various buckling effects from the column response to compressive loads. Cross-section proportions and bolt spacing have been adapted, in order to interfere with the distortion of individual profiles and the overall buckling of the columns. Experiments show that, through proper design and insight …
Compressive Strength Tests And Design Of Cold-Formed Plain And Dimpled Steel Columns, V. B. Nquyen, C. J. Wang, D. J. Mynors, M. A. English, M. A. Castellucci
Compressive Strength Tests And Design Of Cold-Formed Plain And Dimpled Steel Columns, V. B. Nquyen, C. J. Wang, D. J. Mynors, M. A. English, M. A. Castellucci
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper presents the experiments and design formulae of cold-formed plain and dimpled steel columns. A series of compression tests on plain and dimpled channel columns were conducted over a range of different geometries and the strength of the columns were investigated. The change in strength of the dimpled columns resulting from the cold working associated with the dimpling process was considered. The results showed that the buckling and ultimate strengths of dimpled steel columns were up to 33% and 26% greater than plain steel columns, respectively. The test results were evaluated by comparing buckling and ultimate loads of plain …
Compression-Tension Hysteretic Response Of Cold-Formed Steel C-Stection Framing Members, D. Padilla-Llano, C. D. Moen, M. Eatherton, L. Mcanallen, T. Bruce
Compression-Tension Hysteretic Response Of Cold-Formed Steel C-Stection Framing Members, D. Padilla-Llano, C. D. Moen, M. Eatherton, L. Mcanallen, T. Bruce
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper summarizes results from an experimental program designed to evaluate the tension-compression cyclic axial response of cold-formed steel C-section structural framing members. A new cyclic loading protocol for cold formed steel members is presented that defines the target axial displacement based on elastic buckling parameters. The protocol is used to explore the cyclic response of members experiencing local buckling, distortional buckling, and global buckling deformation. In the experiments, post-bucking energy dissipation was observed along with tension stretching and softening. The quantity of dissipated energy per cycle increased as cross-section and global slenderness decreased. Specimens experiencing local and distortional buckling …
Load Distribution In Floor To Wall Connections, D. M. Fox, D. R. Knill, R. M. Schuster
Load Distribution In Floor To Wall Connections, D. M. Fox, D. R. Knill, R. M. Schuster
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Presented in this paper is a cold formed steel load distribution system developed by iSPAN Systems LP that enables the installation of floor joists without the need to align them with the supporting wall studs. The floor joists are supported by a shear connection attached to a cold formed steel perimeter distribution member. In addition to the load distribution aspect, the system results in a simplified lateral design approach. An experimental verification study was carried out to establish the load distribution capability of the system, resulting in a simplified procedure to determine the connection requirements and load transfer characteristics to …
Direct Strength Design Of Metal Building Wall And Roof Systems - Through-Fastened Simple Span Girts And Purlins With Laterally Unbraced Compression Flanges, Tian Gao, Cristopher D. Moen
Direct Strength Design Of Metal Building Wall And Roof Systems - Through-Fastened Simple Span Girts And Purlins With Laterally Unbraced Compression Flanges, Tian Gao, Cristopher D. Moen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
A Direct Strength Method (DSM) prediction approach is introduced and validated for metal building wall and roof systems constructed with steel panels through-fastened with screws to girts or purlins. The focus is capacity prediction for simple spans under wind uplift or suction, however the DSM framework is generally formulated to accommodate gravity loads, continuous spans, standing seam roofs, and insulated roof and wall systems in the future. System flexural capacity is calculated with the usual DSM approach – global buckling, local global buckling interaction, and distortional buckling strengths are determined with a finite strip eigen-buckling analysis including a rotational spring …
Towards The Design Of Cold-Formed Steel Foam Sandwich Columns, S. Szyniszewski, B. H. Smith, V. M. Zeinoddini, J. F. Hajjar, S. R. Arwade, B. W. Schafer
Towards The Design Of Cold-Formed Steel Foam Sandwich Columns, S. Szyniszewski, B. H. Smith, V. M. Zeinoddini, J. F. Hajjar, S. R. Arwade, B. W. Schafer
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In this paper a design method for the compressive capacity of sandwich panels comprised of steel face sheets and foamed steel cores is derived and verified. Foamed steel, literally steel with internal voids, provides the potential to mitigate many local stability issues through increasing the effective width-to thickness of the component for the same amount of material. Winter’s classical effective width expression was generalized to the case of steel foam sandwich panels. The provided analytical expressions are verified with finite element simulations employing brick elements that explicitly model the steel face sheets and steel foam cores. The closed-form design expressions …
Dynamic Time-History Analysis On Wind-Induced Response Of Light-Weight Roof System, X. K. Jing, Y. Q. Li, D. J. Gong
Dynamic Time-History Analysis On Wind-Induced Response Of Light-Weight Roof System, X. K. Jing, Y. Q. Li, D. J. Gong
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Severe damage to light-weight roof system occur when exposed to strong wind loading. Damage investigations and wind load-bearing capacity tests of light-weight roof system reveal that the connection damage of roof sheeting and fastener is the most serious. Wind pressure distributions on the roof of gabled steel frame measured in a wind tunnel are described. Secondly, illustrated by the example of the classic standing-lock roof system, the wind-induced forces for the concealed clips estimated by the building code and time-history analysis based on wind tunnel test, respectively, are compared. The results indicate that the uniform gust factor used in the …
Experimental Analysis Of Beam-To-Upright Connections In Cold-Formed Steel Storage Pallet Racks, Tuo Wang, Xianzhong Zhao, Yiyi Chen
Experimental Analysis Of Beam-To-Upright Connections In Cold-Formed Steel Storage Pallet Racks, Tuo Wang, Xianzhong Zhao, Yiyi Chen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
A research program is currently in progress at Department of Building Engineering of Tongji University with the aim of investigating the behavior of cold-formed steel storage pallet racks under static and dynamic loading. This paper presents preliminary experimental analysis on the monotonic behavior of beam-to-upright connections. In the experimentation, the set-up was specially designed to accommodate precise requirement of boundary conditions and the measurement method was refined from the general ones used in rack design codes. It is shown that deformation modes of the connections were similar before failure while the failure modes were different depending on the specific constructional …
Experimental And Numerical Investigations Of High Strength Cold-Formed Lapped Z Purlins Under Combined Bending And Shear, Cao Hung Pham, Annabel F. Davis, Bonney R. Emmett
Experimental And Numerical Investigations Of High Strength Cold-Formed Lapped Z Purlins Under Combined Bending And Shear, Cao Hung Pham, Annabel F. Davis, Bonney R. Emmett
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Plain C or Z- sections are two of the most common cold-formed steel purlins in use for roof systems throughout the world. Especially for Z- sections, their lapping ability provides continuity and double thickness material at the support regions results in greater performance and more economical designs. At the region just outside the end of the lap, the purlin may fail under a combination of high bending and shear. Design methods for these sections are normally specified in the Australian/New Zealand Standard for Cold-Formed Steel Structures (AS/NZS 4600:2005) or the North American Specification for Cold- Formed Steel Structural Members (2007). …
In-Plane Shear Lag Of Bolted Connections, Lip H. Teh, Benoit P. Gilbert
In-Plane Shear Lag Of Bolted Connections, Lip H. Teh, Benoit P. Gilbert
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper points out that the shear lag factors embedded in the design equations specified in the North American, European and Australasian cold-formed steel structures codes for determining the net section tension capacity of bolted connections in flat steel sheets either yield “anomalous” results or become irrelevant when they exceed unity. The anomaly is demonstrated through laboratory tests and is explained using simple calculus. A proper mathematical expression for the in-plane shear lag factor, which does not suffer from the anomaly of the code equations and never implies shear lag factors greater than unity for any configuration, is presented and …
Mechanisms Of Block Shear Failure Of Bolted Connections, Lip H. Teh, Drew D. A. Clements
Mechanisms Of Block Shear Failure Of Bolted Connections, Lip H. Teh, Drew D. A. Clements
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper examines the mechanisms for block shear failure postulated in the design provisions specified in the North American Specification for the Design of Cold-formed Steel Structural Members 2007 and AS/NZS 4600:2005 Coldformed Steel Structures. It explains that there is only one feasible mechanism for the limit state of conventional block shear failure, that which involves shear yielding and tensile rupture. It proposes an equation that provides more accurate results compared to the code equations in predicting the block shear capacities of bolted connections in steels having minimal strain hardening. A resistance factor of 0.8 for the proposed equation is …
Active Shear Planes In Block Shear Failure Of Bolted Connections, Drew D. A. Clements, Lip H. Teh
Active Shear Planes In Block Shear Failure Of Bolted Connections, Drew D. A. Clements, Lip H. Teh
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In the AISI Specification for the Design of Cold-formed Steel Structural Members 2007, there are two types of shear planes used to determine the resistance of a bolted connection to block shear failure. When the block shear failure occurs by shear yielding and tensile rupture, the shear failure plane is taken to be the gross shear plane. Conversely, when the block shear failure is deemed to occur by simultaneous shear and tensile ruptures, the shear failure plane is assumed to be the net shear plane. Such an approach is not logical since the shear failure planes should be unique irrespective …
Design Of Perforated Industrial Storage Rack Columns For Distortional Buckling, Teoman Peköz, Güven Kıymaz, Miquel Casafont, Maria Magdalena Pastor, Jordi Bonada
Design Of Perforated Industrial Storage Rack Columns For Distortional Buckling, Teoman Peköz, Güven Kıymaz, Miquel Casafont, Maria Magdalena Pastor, Jordi Bonada
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The results of an on-going research program to develop a design procedure for perforated industrial storage rack columns are presented. The design procedure includes the effects of distortional buckling. The types of columns studied include those commonly used in Europe and some that are used in the US. The design procedure is being developed based on finite element studies verified by physical testing. The design procedure involves the use of the current US rack column design approach with an extension to distortional buckling with Finite Strip Method (FSM) solutions and Direct Strength Method (DSM) approaches. The approach originally developed for …