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Numerical Assessment Of Roof Panel Uplift Capacity Under Wind Load
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Book Synopsis Numerical Assessment of Roof Panel Uplift Capacity Under Wind Load by : Weixian He
Download or read book Numerical Assessment of Roof Panel Uplift Capacity Under Wind Load written by Weixian He and published by . This book was released on 2010 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integrity of the roof system is essential for ensuring the safety of inhabitants and preventing excessive damage to light-frame wood structures. The uplift capacity of fastened roof panels has been investigated using experimental tests and numerical models, where monotonic uniform static pressures are often applied to the roof panel models. The verification is needed for the adequacy of using static uniformly distributed pressure representing the wind load. Moreover, the uncertainty of nail withdrawal behaviour has not been included in existing numerical models, and the effect due to construction errors has not been addressed rationally. A nonlinear Finite Element model is developed in this study to incorporate the nail withdrawal uncertainty in terms of maximum withdrawal force, initial stiffness, proportional limit, and the displacement at maximum force of the nail withdrawal behaviour. This model is used to investigate the statistical characteristics of the panel uplift capacity. The effect of spatial varying wind load is discussed by using the pressure coefficient obtained from wind tunnel model test at the Boundary Layer Wind Tunnel at the University of Western Ontario. Furthermore, the impact of construction error is investigated, in terms of missing nail effects, with first-hand survey information. The detailed survey was carried out at the IRLBH (The Insurance Research Lab for Better Homes) facility to inspect the quality of construction, specifically for the statistical information of missing nails on roof panels. Finally, the evaluated statistical characterization of panel uplift capacity is used for the reliability analysis of a typical panel considering or ignoring the missing nail effects. Both code specified pressure-gust coefficient from NBCC (2005) and the peak pressure coefficients obtained from wind tunnel test are used. Results suggested that the nonlinear pushover analysis using the proposed nonlinear Finite Element model is adequate for estimating the panel uplift capacity. A more stringent fastening schedule with a spacing of 150 mm for the edges and intermediate supports is suggested for the construction of light frame wood houses.
Book Synopsis Structural Seismic and Civil Engineering Research by : Ankit Garg
Download or read book Structural Seismic and Civil Engineering Research written by Ankit Garg and published by CRC Press. This book was released on 2023-04-12 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Seismic and Civil Engineering focuses on civil engineering research, anti-seismic technology and engineering structure. These proceedings gather the most cutting-edge research and achievements, aiming to provide scholars and engineers with preferable research directions and engineering solutions as reference. Subjects in these proceedings include: Engineering Structure Materials of Civil Engineering Structural Seismic Resistance Monitoring and Testing The works in these proceedings aim to promote the development of civil engineering and earthquake engineering. Thereby, promoting scientific information interchange between scholars from top universities, research centers and high-tech enterprises working all around the world.
Book Synopsis Numerical Evaluation of Low Slope Roofs for Wind Uplift by : Javad Borujerdi
Download or read book Numerical Evaluation of Low Slope Roofs for Wind Uplift written by Javad Borujerdi and published by . This book was released on 2004 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind Uplift Performance Evaluation of Adhesive Applied Roofing Systems by : Bona Murty
Download or read book Wind Uplift Performance Evaluation of Adhesive Applied Roofing Systems written by Bona Murty and published by . This book was released on 2010 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical and Experimental Investigations for Wind Uplift Force on Flat Roofing System by : Nima Dayani
Download or read book Numerical and Experimental Investigations for Wind Uplift Force on Flat Roofing System written by Nima Dayani and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Time-varying Wind Uplift Test Protocols for Residential Wood Roof Sheathing Panels by : Kenneth M. Hill
Download or read book Development of Time-varying Wind Uplift Test Protocols for Residential Wood Roof Sheathing Panels written by Kenneth M. Hill and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Following the damage caused by Hurricane Andrew (1992) several research institutions and universities made an effort to improve the performance of residential wood roof sheathing panels in extreme wind events. The outcome of this research was predicted panel uplift resistance based on observed performance under varying static test methods. Changes in panel construction have resulted in improved wind uplift resistance, however failures are still observed below design level wind speeds. It is the hypothesis of this investigation that some residential wood roof sheathing panel failures are due to current test methods overestimating panel resistance. Previous wood roof sheathing panel uplift tests have used uniform static pressure on newly constructed panels. However aged wood roof sheathing panels are subjected to temporally varying pressure loading in the field. As part of this research standardized test protocols are developed for static and temporally varying (dynamic) pressure loading. Panels fabricated in the lab and harvested from existing construction are tested with static and dynamic pressure. Over 170 panels were tested statically, 38 of which were harvested from existing construction, and 34 panels were tested statically vs. dynamically. It is found that dynamic loading reduces uplift capacity of wood roof sheathing panels approximately 20%, and that age or weathering do not appear to effect the uplift resistance of panels.
Book Synopsis Finite Element Analysis of the Wind - Uplift Resistance of Roof Edge Components by : Maha Dabas
Download or read book Finite Element Analysis of the Wind - Uplift Resistance of Roof Edge Components written by Maha Dabas and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind-induced damages on low-slope roofs are a major and common problem that many buildings located in high wind areas suffer from. Most of these damages are initiated when the metal roof edge fails first, leading to overall roof failure. This is because peak wind pressures occur at the edges and corners of low-slope roof buildings. Currently, there are not enough wind design guidelines for the Canadian roofing community to quantify the dynamic wind uplift resistance of the roof edge system. The objective of this research is to evaluate the effect of wind-induced loads on roof edges using a finite element model, verify the numerical results with those obtained from controlled experiments, and perform parametric investigations for various design variables. In this research, the overall roof edge system was modelled using the commercial finite element software package ABAQUS, by simulating the roof edge system with shell elements and applying a uniform static pressure against the face of the edge cleat or coping. Results of the modelling were compared to the experimental ones in terms of deflection of the coping under uniform pressure. The results of the numerical model and the experiments show a good agreement. Furthermore, a parametric analysis of the system was conducted under the effect of varying parameters. i.e., coping gauge, nail spacing, coping and cleat length and wind and thermal load application.
Book Synopsis Issues in Land and Water Engineering: 2013 Edition by :
Download or read book Issues in Land and Water Engineering: 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Land and Water Engineering / 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Coastal Engineering. The editors have built Issues in Land and Water Engineering: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Coastal Engineering in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Land and Water Engineering: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Book Synopsis Wind Uplifting Performance of Roof-to-wall Connections and Roof Structures with Elastomeric Adhesives in Light-frame Wood Buildings by : Bilal M. Alhawamdeh
Download or read book Wind Uplifting Performance of Roof-to-wall Connections and Roof Structures with Elastomeric Adhesives in Light-frame Wood Buildings written by Bilal M. Alhawamdeh and published by . This book was released on 2020 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light-frame wood residential buildings are highly susceptible to damage caused by severe wind events such as hurricanes and tornados. Roof failures in residential buildings are commonly observed due to weaknesses of or missing connections. Roof-to-wall connections not only have significant influences on roof performance but also affect building resistance due to their critical role of transferring wind loads to the wall system and ultimately to the foundation. Roof fails when it has no sufficient wind uplift resistance due to improper selection or installation of construction materials (including fasteners) and strength degradation due to aging or long service. Toenailing is commonly used in roof connections, which was found to be inadequate in high-wind areas. One approach to improve roof performance is to use metal connectors in roof connections. However, it was found out that such an approach may result in a water leak due to fasteners' holes, weakening the substrate, and being susceptible to wind-induced fatigue damage. Elastomeric adhesives have been increasingly applied in civil engineering construction due to its ease of installation, long service life, environmental stability, cost-effectiveness, and better bonding performance over continuous interfaces and increase stiffness. The goal of this dissertation is, therefore, to enhance the performance of light-frame wood construction to resist the adverse effects of extreme wind events through developing an affordable, efficient, long-service, and nonintrusive roof connections using elastomeric adhesives (i.e., polyurethane and polyether). Specifically, their research tasks are carried out: (i) experimentally evaluate wind uplift resistance of the proposed adhesive connections using the monotonic uplift loading tests; (ii) experimentally evaluate the wind-induced fatigue performance of the connections under the fatigue cyclic loading tests; and (iii) numerically evaluate a three-dimensional roof structure with the adhesive connections under uniform and ASCE design wind pressures. The results from the monotonic tests show that the addition of adhesives significantly increases the uplift load capacity by (200%-460%) and energy dissipation by (200%-750%). The fatigue loading tests consist of both constant amplitude and realistic varying amplitude cyclic loadings. These tests' results show that adding adhesives to connections significantly increases the endurance limit by 250~330%. From the numerical analysis, it is observed that the three-dimensional gable roof structure using adhesive connections has reduced roof sheathing stresses (200~400%) and deformations by 200% under uniform uplift pressure. Moreover, the adhesive roof structure can resist a Category 4 wind speed (130-156 mph) per the ASCE 7-16 specification.
Author :American Society of Civil Engineers Publisher :Amer Society of Civil Engineers ISBN 13 :9780784404881 Total Pages :352 pages Book Rating :4.4/5 (48 download)
Book Synopsis Minimum Design Loads for Buildings and Other Structures by : American Society of Civil Engineers
Download or read book Minimum Design Loads for Buildings and Other Structures written by American Society of Civil Engineers and published by Amer Society of Civil Engineers. This book was released on 2000 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determining the Uplift Load Capacity of Cold-formed Metal Roof Panels Using Counterpropagation Neural Networks by : Gene F. Sirca
Download or read book Determining the Uplift Load Capacity of Cold-formed Metal Roof Panels Using Counterpropagation Neural Networks written by Gene F. Sirca and published by . This book was released on 2000 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Evaluation for the Effect of Table Size on Roof Wind Uplift Resistance by : S. M. Zahrai
Download or read book Numerical Evaluation for the Effect of Table Size on Roof Wind Uplift Resistance written by S. M. Zahrai and published by . This book was released on 1999 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cold-Formed Steel Design by : Wei-Wen Yu
Download or read book Cold-Formed Steel Design written by Wei-Wen Yu and published by John Wiley & Sons. This book was released on 2019-10-29 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the latest AISI North American specifications for cold-formed steel design Hailed by professionals around the world as the definitive text on the design of cold-formed steel, this book provides descriptions of the construction and structural behavior of cold-formed steel members and connections from both theoretical and experimental points of view. Updated to reflect the 2016 AISI North American specification and 2015 North American framing standards, this all-new fifth edition offers readers a better understanding of the analysis and design of the thin-walled, cold-formed steel structures that have been widely used in building construction and other areas in recent years. Cold-Formed Steel Design, 5th Edition has been revised and reorganized to incorporate the Direct Strength Method. It discusses the reasons and justification for the various design provisions of the North American specification and framing design standards. It provides chapter coverage of: the types of steels and their most important mechanical properties; the fundamentals of buckling modes; commonly used terms; the design of flexural members, compression members and closed cylindrical tubes, and of beam–columns using ASD, LRFD, and LSD methods; shear diaphragms and shell roof structures; standard corrugated sheets; and more. Updated to the 2016 North American (AISI S100) design specification and 2015 North American (AISI S240) design standard Offers thorough coverage of ASD, LRFD, LSD, and DSM design methods Integrates DSM in the main body of design provisions Features a new section on Power-Actuated Fastener (PAF) Connections Provides new examples and explanations of design provisions Cold-Formed Steel Design, 5th Edition is not only instructive for students, but can serve as a major source of reference for structural engineers, researchers, architects, and construction managers.
Download or read book Wind Loads written by Kishor C. Mehta and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mehta and Coulbourne explain the wind load provisions of Standard ASCE/SEI 7-10 as they affect the planning, design, and construction of buildings for residential and commercial purposes.
Book Synopsis Metal Building Systems Design and Specifications 2/E by : Alexander Newman
Download or read book Metal Building Systems Design and Specifications 2/E written by Alexander Newman and published by McGraw-Hill Prof Med/Tech. This book was released on 2004 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book from an expert on metal building systems--the first an author unaffiliated with an industry trade group--offers important, valuable, and unbiased information that can save you money and time--and that may even save your building! Full of essential features, tips and advice, this guide goes beyond manufacturer-supplied information to warn you of potential design pitfalls and to point out specific recurring problems and failures of MBS drawn from actual experience. It provides specific help--unavailable elsewhere--with specifying and selecting secondary framing, walls, roofs, and much, much more. This is the one book that is a must-have for any professional involved with pre-engineered buildings.
Book Synopsis Structural Masonry Designers' Manual by : W. G. Curtin
Download or read book Structural Masonry Designers' Manual written by W. G. Curtin and published by John Wiley & Sons. This book was released on 2006-07-12 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This major handbook covers the structural use of brick and blockwork. A major feature is a series of step-by-step design examples of typical elements and buildings. The book has been revised to include updates to the code of practice BS 5628:2000-2 and the 2004 version of Part A of the Building Regulations. New information on sustainability issues, innovation in masonry, health and safety issues and technical developments has been added.
Book Synopsis International Building Code 2015 by : International Code Council
Download or read book International Building Code 2015 written by International Code Council and published by International Code Council. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers the latest regulations on designing and installing commercial and residential buildings.
