Autodesk® Infrastructure Modeler software for urban planning design helps civil engineering, transportation, and urban planning professionals create, evaluate, and communicate infrastructure proposals. Infrastructure Modeler can help to drive stakeholder buy-in and inform decision making with visually rich proposals for transportation, land, water, and energy infrastructure projects.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
If you like it, it is strongly suggested you buy it to support the developers.
By any means you may not use this software to make money or use it for commercial purpose.
AutoCAD Raster Design allows you to effectively use scanned paper drawings, aerial photographs, digital elevation models (DEM) and satellite data inside your AutoCAD® drawings. You can insert bitonal, grayscale, and color raster images into your AutoCAD drawings, then correlate, edit, analyze, and export the results.
AutoCAD Raster Design can analyze and display image data from a wide range of sources, including satellite imagery, wavelet compressed images, and digital elevation models (DEM). AutoCAD Raster Design also provides efficient tools for cleaning up and archiving paper-based drawings in digital form.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
If you like it, it is strongly suggested you buy it to support the developers.
By any means you may not use this software to make money or use it for commercial purpose.
All the Bulgarian Eurocodes including the National Annexes .
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Offshore wind is the new blue horizon for Alternative Energy. One small offshore wind farm can produce more power than a whole coal plant, or a nuclear reactor. However, very few people have real experience getting an offshore wind farm up and running. This book is the first-ever roadmap to successful offshore wind installation. It provides a ready reference for wind project managers, teaching them how to deal with complications on-site, as well as for financers, who can utilize the text as an easy guide to asking the pivotal questions of petitioning wind project developers, whose planning stages will be improved by the book's expert advice on how to avoid wasting money by scoping out and mitigating potential problems up-front. Wind turbine manufacturers will benefit from insights into design optimization to support cheaper installation and hauling, thereby incurring lower project costs, and helping developers establish a quicker route to profitability. The book sheds light not just on HOW to solve a particul installation difficulty, but delves into WHY the problem may best be solved in that way. Readers will learn not just how to build successful offshore wind farms, but how to do so in the most safe and economical way possible.
Enables all stakeholders to achieve cheaper, faster and safer offshore wind project
realization
Explains the different approaches to executing on- and offshore projects, highlighting the
economic impacts of the various financial and operational choices
Provides practical, proven advice on how tough challenges can be overcome,
using real-life examples from the author's experiences to illustrate key issues
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Mechanical Vibrations:Modeling and Measurement describes essential concepts in vibration analysis of mechanical systems. It incorporates the required mathematics, experimental techniques, fundamentals of modal analysis, and beam theory into a unified framework that is written to be accessible to undergraduate students,researchers, and practicing engineers. To unify the various concepts, a single experimental platform is used throughout the text to provide experimental data and evaluation. Engineering drawings for the platform are included in an appendix. Additionally, MATLAB programming solutions are integrated into the content throughout the text. This book also:
Discusses model development using frequency response function measurements
Presents a clear connection between continuous beam models and finite degree of freedom models
Includes MATLAB code to support numerical examples that are integrated into the text narrative
Uses mathematics to support vibrations theory and emphasizes the practical significance of the results.
Mechanical Vibrations:Modeling and Measurement is an ideal book for undergraduate students, researchers, and practicing engineers alike who are interested in developing a more thorough understanding of essential concepts in vibration analysis of mechanical systems.
Related subjects » Classical Continuum Physics - Mechanics
2. Table of contents
Introduction.- Single degree of freedom free vibration.- Single degree of freedom forced vibration.- Two degree of freedom free vibration.- Two degree of freedom forced vibration.- Model development by modal analysis.- Measurement techniques.- Continuous beam models.- Receptance coupling.- Appendix A: Orthogonality of eigenvectors.- Appendix B: Beam experimental platform.
3. Authors & Editors
Professor Schmitz has been working in mechanical vibrations for well over 15 years and has developed methods to enable mechanical engineers to apply vibrations fundamentals to common industrial problems. In addition he has assembled extensive course notes, case studies, exercises, problem sets and developed MATLAB code. A complete solutions manual is available as well.
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This part of ISO 4759 specifies a selection of tolerances for bolts, screws, studs and nuts with ISO metric threads and with product grades A, B and C and for tapping screws with product grade A.
NOTE The product grades refer to the size of the tolerances where grade A is the most precise and grade C is the least precise.
The tolerances, except tolerances for threads, are selected from the system of limits and fits specified in ISO 286-1 and ISO 286-2. The tolerances for metric threads are taken from the series of tolerance classes specified in ISO 965-3. The tolerances for tapping screw threads are covered in ISO 1478.
The tolerances of form and position are specified and indicated in accordance with ISO 1101, ISO 8015 and ISO 2692.
The tolerances specified in this part of ISO 4759 apply to fasteners prior to coating unless otherwise specified. See also ISO 4042.
Deviations from the tolerances specified in this part of ISO 4759 are only permitted in product standards where there are valid technical reasons. In cases where there is a difference between the tolerance requirements in this part of ISO 4759 and the product standard, the product standard takes precedence.
It is recommended that these tolerances also be used for non-standard fasteners.
Dimensions and tolerances given in this part of ISO 4759 are in millimetres
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This part of ISO 4759 establishes a selection of tolerances for use in the preparation of ISO product standards for punched plain washers of product grades A and C, for use with bolts, screws and nuts of nominal thread diameters of from 1 mm to 150 mm inclusive.
It is recommended that these tolerances also be used for non-standard washers.
NOTE The product grade refers to the quality of the product and to the size of the tolerances.
Annex A (informative) presents tolerances taken from ISO 286-1 and ISO 286-2.
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Abstract:
A closed form solution for elastic global buckling of twin girder systems interconnected with cross frames is derived. Current design specifications for such systems only consider individual girder buckling between cross frames. The solution, which is suitable for design specifications, was developed for a uniform moment loading condition. Finite-element analyses (FEAs) were used to verify the closed form solution and extend it to more practical loading conditions. FEA showed that the load height condition had only a minor effect for twin girders compared to the published effects on single girders. Both singly and doubly symmetric sections were studied and showed that the girder spacing and the in-plane moment of inertia of the girders are the principal variables controlling global buckling of twin girders. The number and size of the intermediate cross frames had little effect. A method for improving the global buckling capacity through the use of a partial top flange lateral bracing system is presented along with a design example
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Shear Resistance of Transversely Stiffened Steel I-Girders
Author: White Donald W., Barker Michael G. | Size: 0.3 MB | Format:PDF | Quality:Original preprint | Publisher: Journal of Structural Engineering; Vol. 134; Issue 9 | Year: Sep2008 | pages: p1425-1436, 12p.
Abstract:
This paper evaluates the accuracy and ease of use of 12 of the most promising models for the shear resistance of transversely stiffened steel I-girders. Several models that are well established in civil engineering practice as well as a number of other recently proposed models are considered. As the model developed in Basler’s seminal research is the method of choice in current American practice, the paper focuses on the merits and limitations of the alternative models relative to Basler’s. Statistical analyses are conducted on the predictions by the various models using an updated data set from 129 experimental shear tests, including 30 hybrid and 11 horizontally curved I-girders. The results support the conclusion that the form of Basler’s model implemented in 2004 AASHTO LRFD Bridge Design Specifications and 2005 AISC Specification for Structural Steel Buildings gives the best combination of accuracy and simplicity for calculation of the shear resistance of transversely stiffened steel I-girders.
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Abstract:
Longitudinal stiffeners are often attached to increase the buckling strength of thin-walled box girder flanges. The minimum required rigidity for longitudinal stiffeners for curved box girder flanges is given by the AASHTO “Guide specifications for horizontally curved steel girder highway bridges.” However, this requirement is simply adopted from the current AASHTO specifications for straight stiffened flanges. The validity of this requirement has been questioned in a series of recent studies. The effect of important design parameters on the minimum required stiffener rigidity is investigated numerically in this study by examining the prebuckling stress distribution and elastic and inelastic buckling stresses of horizontally curved stiffened flanges. In order to characterize and quantify the analytically collected data, a series of parametric studies were performed. A new equation for the minimum required rigidity for the longitudinal stiffeners is derived from regression analyses. Through the evaluation of a few selected case studies and a design example, the validity and reliability of the proposed new equation is demonstrated.
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Hi i need a spread sheet or a small software which can help me building canal cross sections with given data points preferable in CAD format, which will later help in area calculations. Or any other solution related to this problem.
I really need solution. So any kind of help will be appreciated :)
Cheers.. !
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