Modern prestressed concrete highway bridge superstructures
Modern prestressed concrete highway bridge superstructures: Design principles and construction methods
By James R Libby
* Publisher: Grantville Pub. Co
* Number Of Pages: 254
* Publication Date: 1976
* ISBN-10 / ASIN: B0006CJWO2
* ISBN-13 / EAN:
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Bridge Design for Economy and Durability: Concepts for New, Strengthened and Replacement Bridges
By Brian Pritchard
* Publisher: Thomas Telford
* Number Of Pages: 172
* Publication Date: 1992-11
* ISBN-10 / ASIN: 0727716719
* ISBN-13 / EAN: 9780727716712
Product Description:
This comprehensive book describes a number of new or updated bridging concepts which were developed and successfully applied during the author's forty years of close involvement with UK and international bridge design, construction, maintenance and research. The concepts mainly apply to the small/medium span range of bridges and viaducts and contribute to one or more of the following features: design and construction economy in both time and money; ease of inspection and minimum maintenance; ride quality and safety; good appearance; and strengthening when required with minimum traffic disruption.
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To deliver your project on time, you need to manage time carefully. To do this, make sure every task is listed in a Project Plan and that they are scheduled to occur precisely when they need to.
Every week, update your plan with the time spent completing tasks and identify whether each task is ahead or behind schedule. Track the % complete of each task and if it's behind schedule, then get it back on track by assigning more resource or reducing the scope of the task. Don't let tasks slip. Be vigilant.
Rule 2: Track Costs and Manage Finances
Every element of your project incurs a cost. You need to identify all of the planned costs upfront and get them approved by your manager.
Then record every expense as it occurs - including people, equipment and materials. Check that your actual expenditure does not exceed your planned expenditure. And if it does, then you need to cut back. If you're running over budget, tell your Project Sponsor early.
Rule 3: Ensure Quality Targets are Set
You need to specify upfront exactly what it is that the project will deliver (i.e. the "deliverables" ). Then set targets for the quality of these deliverables. Get your quality targets agreed by your customer.
Then every week, review the quality of each deliverable produced by the project. If it's not up to standard, fix it immediately. Never wait until the end of the project before fixing up quality issues.
Rule 4: Control Scope at the Micro Level
Your scope is defined as "the set of deliverables that need to be produced by the project". So make sure that you know what your scope is, try not to let anyone change it.
Check every week that your team is working on "just" the set of deliverables agreed, and nothing more. Check that every deliverable being produced exactly matches the specification you've defined for it. Note: An increase in the scope of your project will make it harder to deliver.
Rule 5: Resolve Issues Early
If issues arise during the project, then resolve them early. Pounce on every issue before it delays your project. Record it formally and then track it until it's resolved. Unresolved issues lead to delays which lead to project failure. Stay safe – resolve issues early.
Applied Strength of Materials 4th
Robert L.Mott,
Prentice Hall | 2001 | ISBN : 0130885797 | PDF | 238 pages | 5.6 MB | RS.com
Applied Strength of Materials provides comprehensive coverage of the key topics in strength of materials with an emphasis on applications, problem solving, and design of structural members, mechanical devices, and systems. The fourth edition of this best-selling text has been updated and enhanced to include a new "Big Picture" feature and a brief review of statics in a new appendix. Strengths of this text include: bull; A section called The Big Picture begins each chapter and engages students in discussion of the many contexts in which the principles in that chapter are used in real, practical design. This feature draws on the students' own experience and builds their knowledge of the mechanical design field. It is based on the learning theory that students learn better when they can relate new concepts to past experiences and when they consider the whole before tackling the details. An extensive introduction to composite materials along with the commentary throughout the book on the application of composites to various kinds of load-carrying members and comparisons/contrasts of composites to traditional structural members. Suggested computer programming assignments with recommended uses for spreadsheets, equation-solving software such as MATLAB, and graphing calculators to reflect the continuing development of electronic aids. Strong presentation of design approaches in addition to analysis, providing extensive information on guidelines for design of mechanical devices and structural members.
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WinRAR 3.91 beta 2 Multilingual Portable
WinRAR is a powerful archive manager. RAR files can usually compress content by 8 percent to 15 percent more than ZIP files can. WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format.
WinRAR puts you ahead of the crowd when it comes to compression. By consistently creating smaller archives, WinRAR is often faster than the competition. This will save you disc space, transmission costs AND valuable working time as well. WinRAR is ideal for multimedia files. WinRAR automatically recognizes and selects the best compression method. The special compression algorithm compresses multimedia files, executables and object libraries particularly well.
WinRAR benefits
• Using WinRAR puts you ahead of the crowd when it comes to compression by consistently making smaller archives than the competition, saving disk space and transmission costs.
• WinRAR provides complete support for RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives.
• WinRAR offers a graphic interactive interface utilizing mouse and menus as well as the command line interface.
• When you purchase WinRAR license you are buying a license to the complete technology, no need to purchase add-ons to create self-extracting files, it's all included.
• WinRAR is easier to use than many other archivers with the inclusion of a special "Wizard" mode which allows instant access to the basic archiving functions through a simple question and answer procedure. This avoids confusion in the early stages of use.
• WinRAR offers you the benefit of industry strength archive encryption using AES (Advanced Encryption Standard) with a key of 128 bits.
• WinRAR supports files and archives up to 8,589 billion gigabytes in size. The number of archived files is, for all practical purposes, unlimited.
• WinRAR offers the ability to create selfextracting and multivolume archives.
• Recovery record and recovery volumes allow to reconstruct even physically damaged archives.
• WinRAR features are constantly being developed to keep WinRAR ahead of the pack.
WinRAR 3.91 Beta 2
1. WinRAR might crash when testing corrupt CAB files.
2. Beta 1 crashed on some of TAR.BZ2 archives.
3. Total progress bar could be displayed incorrectly in "Convert archives" command in beta 1.
4. SFX archives set the wrong value to "sfxcmd" environment variabe if user account control prompt was displayed when unpacking.
Download: 1.27 Mb
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A response spectrum method for random vibrations
Der Kiureghian, Armen
UCB/EERC-80/15, Earthquake Engineering Research Center, University of California, Berkeley, 1980-06, 46 pages (575/D44/1980)
A response spectrum method for stationary random vibration analysis of linear structures is developed. The method is based on the assumption that the input excitation is a wide-band, stationary Gaussian process and that the response is also stationary. However, the method can also be used as a good approximation for the response to a transient stationary Gaussian input with a duration several times longer than the fundamental period of the structure. Various response quantities, including the mean-squares of the response and its time derivative, the response mean frequency, and the cumulative distribution and the mean and variance of the peak response, are obtained in terms of the ordinates of the mean response spectrum of the input excitation and the modal properties of the structure. The formulation includes the cross correlation between modal responses, which are shown to be significant for modes with closely spaced natural frequencies. The proposed procedure is demonstrated for an example structure that is subjected to earthquake-induced base excitations. Computed results based on the response spectrum method are in close agreement with simulation results obtained from time-history dynamic analysis. The significance of closely spaced modes and the error associated with a conventional method that neglects the modal correlations are also demonstrated through this example.
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Continuous Beam Influence Lines,
Excel spreadsheet calculates and graphs moment, shear and deflections influence lines in continuous beams
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Best Practice in Steel Construction - Residential Buildings
This publication presents best practice for the design of steel construction
technologies used in residential buildings, and is aimed at architects and other
members of the design team in the early stages of planning a residential
building project. It was prepared as one of a series of three under an RFCS
dissemination project Euro-Build in Steel (Project n° RFS2-CT-2007-00029).
The project’s objective is to present design information on best practice in steel,
and to take a forward look at the next generation of steel buildings. The other
publications cover best design practice in commercial and residential buildings.
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