SCI P057: Design of Members Subject to Combined Bending and Torsion
Author: D. A. NETHERCOT, P. R. SALTER, A. S. Malik | Size: 4.6 MB | Format:PDF | Publisher: SCI | Year: 1997 | pages: 128 | ISBN: 1870004442
The causes of torsional loading on structural members are discussed and those situations in which the explicit consideration of torsion needs to form part of the design calculations are identified. The basic theory of the torsion of both open and closed steel sections is presented. Solutions of the resulting equations in terms of both design charts and formulae for a selection of applied torsional loadings and support conditions are provided. A simple method for combining the effects of torsion and bending, consistent with the approach of BS 5950: Part I is presented. The complete design approach for combined bending and torsion is illustrated by means of a number of worked examples. These show that design will frequently be governed by the need to restrict twisting at working load to acceptable levels, rather than by considerations of ultimate strength.
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This Standard describes the procedure for determining the creep of standard concrete test cylinders subjected to a sustained longitudinal compressive load. This method does not provide means for calculating time-dependent deflection of reinforced or prestressed concrete members.
NOTE: The conditions for curing and storage (see Clause 6) can be varied to suit different requirements, e.g. early pre-stress. The time of loading (see Clause 7) can also be varied to give an indication of other properties. These variations, however, will not comply with the requirements for a creep test as specified in this Standard.
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This Standard sets out a method for the securing and testing of cylindrical cores from hardened concrete for the determination of compressive strength for an estimate of the inservice strength of a structure or part thereof.
NOTE: Because of the increased variability associated with core strengths, it is not recommended that concrete cores be used for direct quality control purposes.
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This Standard sets out a method for preparing and curing of concrete shrinkage specimens, and for determining the length changes of these specimens due to drying in air. It provides for testing of specimens prepared in the laboratory or in the field, in which the nominal size of aggregate in the concrete, in accordance with AS 2758.1, does not exceed 40 mm. The precision statement in Clause 9 does not apply to specimens which have had non-standard initial curing (normally field-prepared specimens). In addition this Standard requires that field-prepared specimens are marked, recorded and reported as such.
NOTES:
This test method is not always suitable for very low slump concrete (less than 20 mm), primarily due to the difficulties in obtaining adequate compaction. Provided adequate compaction is obtained, the method is applicable. The method is specifically designed for measurement of drying shrinkage of concrete, but it is capable of adaptation for measurement of length changes of specimens subjected to a variety of environmental conditions.
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It makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
It's even possible that you're staying up too late because of your computer. You could use f.lux because it makes you sleep better, or you could just use it just because it makes your computer look better.
f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.
Tell f.lux what kind of lighting you have, and where you live. Then forget about it. F.lux will do the rest, automatically.
for XP/Vista/7
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Dear Admin, Dear Protectors and Moderators,I think there is a problem with text formating in postgen since this morning.
I also saw that the medals are gone. Is this had happened by chance or they will no longer exist?
If medals continue to exist, I believe that the Forum team must establish clear criteria for their receipt - the number of posts,
number of threads or number of points .
This guide contains information on the design, specification, manufacture and maintenance of stainless steel architectural components. It is structured into two sections: Design and Technology and Case Studies. The first section includes structural and performance information on stainless steel and reviews production and finishing processes. It focuses on those grades of stainless steel and techniques that are commonly used in relation to architectural components. The second section provides an overview of the contemporary use of stainless steel in architecture. It comprises a broad and representative selection of building projects by leading architects and engineers.
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SCI P247: Over-cladding of Existing Buildings using Light Steel
Author: R M Lawson, R Pedreschi, I Falkenfleth, S O Popo-Ola | Size: 2.4 MB | Format:PDF | Publisher: SCI | Year: 1993 | pages: 60 | ISBN: 1859420842
Buildings are commonly over-clad to improve their appearance, to increase thermal insulation, and to reduce maintenance costs. This publication reviews the use of light steel construction in the over-cladding of existing concrete and masonry buildings as part of a renovation process. The over-cladding systems use sub-frame members that are connected to the existing structure or cladding. The new facade is attached directly to the subframe members. The sub-frame members are assembled from galvanized cold formed steel components, and a variety of different cladding materials may be used. The design aspects for over-cladding systems are reviewed, and the use of steel in over-cladding is discussed. A series of Case Studies from Belgium, Canada, Denmark, Finland, Germany and the United Kingdom are presented to show the range of applications of light steel in over-cladding. A prototype steel intensive over-cladding system is described, and interim results from the testing of this system are reported. It is demonstrated that in most cases the cost of the over-cladding will be re-couped within a 20 year period, if all the potential savings are considered.
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Autodesk DirectConnect software is a product to transfer data from applications for industrial design in CAD.
The result of the transfer of data using Autodesk DirectConnect is a continuous process of design, which eliminates the need to develop, saves time and preserves the original concept designer. Autodesk DirectConnect log files allow you to add filters to the import scripts that depending on the layers and materials to filter out unwanted geometry.
To transfer data to Autodesk products for industrial design (AutoCAD and Autodesk Inventor) using a commercial version of DirectConnect is not required. However, imports in these applications requires an installed program DirectConnect.
Product Key:
719D1
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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.
Wissmann, JW., Hauck, C. – Efficient elastic-plastic finite element analysis with higher order stress-point algorithms. Computers and Structures 1983;17(1):89-95
Potts, DM., Gens, A. – A critical assessment of methods of correcting for drift from the yield surface in elasto-plastic finite element analysis. Int. J. Numer. Methods Eng. 1985;9:159-169
Luccioni LX., Pestana JM, Taylor RL. – Finite element implementation of non-linear elastoplastic constitutive law using local and global explicit algorithms with automatic error control. Int. J. Numer.Methods Eng. 2001;50:1191-1212
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