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LISP to draw steel shapes
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  hello
Posted by: banonong - 03-07-2010, 08:58 PM - Forum: Introduce Yourself - Replies (2)

ho everyone, i'm it guy of an engineering office. thanks for all members who contributes and helps in different sections.

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  Structural Analysis with Applications to Aerospace Structures by Bauchau & Craig
Posted by: babak - 03-07-2010, 05:56 AM - Forum: Analysis & Design - Replies (3)

Structural Analysis with Applications to Aerospace Structures by Bauchau & Craig

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O.A. Bauchau, J.I. Craig, "Structural Analysis: With Applications to Aerospace Structures"
Springer | 2009 | ISBN: 9048125154 | 943 pages | PDF | 12,6 MB

The authors and their colleagues developed this text over many years, teaching undergraduate and graduate courses in structural analysis courses at the Daniel Guggenheim School of Aerospace Engineering of the Georgia Institute of Technology.


The emphasis is on clarity and unity in the presentation of basic structural analysis concepts and methods. The equations of linear elasticity and basic constitutive behaviour of isotropic and composite materials are reviewed. The text focuses on the analysis of practical structural components including bars, beams and plates. Particular attention is devoted to the analysis of thin-walled beams under bending shearing and torsion. Advanced topics such as warping, non-uniform torsion, shear deformations, thermal effect and plastic deformations are addressed. A unified treatment of work and energy principles is provided that naturally leads to an examination of approximate analysis methods including an introduction to matrix and finite element methods.

This teaching tool based on practical situations and thorough methodology should prove valuable to both lecturers and students of structural analysis in engineering worldwide.

This is a textbook for teaching structural analysis of aerospace structures. It can be used for 3rd and 4th year students in aerospace engineering, as well as for 1st and 2nd year graduate students in aerospace and mechanical engineering.


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  How to model in etabs with full span opening of shearwall at the bottom.
Posted by: rendel_© - 03-07-2010, 05:26 AM - Forum: Archive Problem - Replies (4)

How to model in etabs with full span opening of shearwall at the bottom

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See below screenshot to make it clear about my question.I have an opening in the bottom of 12 story shearwall, it is due to the ramp.
Can I humbly ask how to model properly the shearwall to have realistic behavior in this case?
Thank in advance..

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Another question:
Some etabs model, the support they used is hinges..I usually used fixed support..What is the proper way for the cast in situ.

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  Reducing the time for calculations in SAP
Posted by: ivanveliki - 03-06-2010, 09:30 PM - Forum: Archive Problem - Replies (2)

I have a model with compression only frames in SAP2000 v14. When there are many nonlinear elements, the time needed for calculation the model exceedes several hours. Last time it took 3h45min to calculate a model with 50 loading steps (1 static nonlinear case).
The most funny thing is that in the manual it is said that SAP2000 has a "very fast" nonlinear solver.
Reducing the steps doesn't help much.

There are some nonlinear parameters to setup, but I do not fully understand their meaning. I do not want to reduce significantly the amount of the loading steps. I have tried to reduce the number of iterations, but the null steps becomes more than the successful steps and as a result it saves only 1 or 2 steps out of 100.

The same model in MIDAS GEN is calculated for max 10min, but I have a feeling that the results are not quite right and I want to compare the results.

Is there a way to reduce the calculation time somehow?

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  6 Spans Curve Bridge Response Spectrun Analysis by WinSTRUDL (Demo)
Posted by: kowheng - 03-06-2010, 05:05 PM - Forum: Calculation Notes & Analysis Files - No Replies

6 Spans Curve Bridge Response Spectrum Analysis by WinSTRUDL (Demo)

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:rolleyes:

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  Eurocode 2: Part 1-5
Posted by: mantas1985 - 03-06-2010, 11:43 AM - Forum: Archive - Replies (1)

Hello colleagues ,
I real need Eurocode 2: Design of concrete structures. Part 1-5. General rules. Structures with unbonded and external prestressing tendons.

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  CICIND: Model Code for Steel and Concrete Chimneys and Commentaries
Posted by: tacky2010 - 03-06-2010, 08:55 AM - Forum: Codes, Manual & Handbook - Replies (2)

Commentaries for the Model Code for Concrete Chimneys - Part A: The Shell - 2nd Edition, Rev 1

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Please check this one out



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  Communication Tower
Posted by: asumi - 03-06-2010, 06:20 AM - Forum: Request - Replies (3)

any one have Communication Tower drawings for any height or type pls upload

Regards

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  Characteristics of Geologic Materials and Formations
Posted by: Dell_Brett - 03-06-2010, 12:45 AM - Forum: Geology - Replies (5)

Characteristics of Geologic Materials and Formations: A Field Guide for Geotechnical Engineers

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"Characteristics of Geologic Materials and Formations: A Field Guide for Geotechnical Engineers"
by Roy E. Hunt, Taylor & Francis Group, LLC | 2007 | ISBN: 1420042769 | 400 pages | PDF | 19 Mb

With clear, concise, and hands-on guidance, this book describes these rock and soil types in terms of their origin, mode of occurrence, and structural features in situ and presents the typical characteristics that are of engineering significance.
Properly understanding and characterizing geologic materials and formations is vital for making critical engineering decisions. Identifying and classifying rock masses and soil formations allows reasonable estimation of their characteristic properties. Comprising chapters from the second edition of the revered Geotechnical Engineering Investigation Handbook, Characteristics of Geologic Materials and Formations provides a basis for recognizing, identifying, and classifying the various rock and soil types.
This book also explains the elements that affect surface and subsurface water engineering in terms of controlling floods, erosion, subsurface flow, and seepage, as well as for water conservation. Supplying important correlations used to estimate engineering and geologic properties, the book presents correlations for intact rock, rock masses, and soil formations throughout the chapters and condenses this information into a convenient summary table in an appendix. Eliminate the need to search through narrow volumes or large handbooks with Characteristics of Geologic Materials and Formations: A Field Guide for Geotechnical Engineers, a convenient and complete guide to the techniques you need.

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  TIA/EIA 222-F, G - Structural Standards for Steel Antenna Towers and Antenna
Posted by: ascetic19 - 03-05-2010, 03:34 PM - Forum: Codes, Manual & Handbook - Replies (10)

EIA/TIA-222 F or G



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