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  MATRIX METHODS OF STRUCTURAL ANALYSIS F De Veubeke
Posted by: jonny78 - 03-06-2012, 10:08 PM - Forum: Archive - No Replies

please if anyone has this book
MATRIX METHODS OF STRUCTURAL ANALYSIS F De Veubeke 1964 NASA Macmillan/Pergamon

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  ISO 22157 - 1 and 2 Bamboo — Determination of physical and mechanical properties
Posted by: ir_71 - 03-06-2012, 07:25 PM - Forum: ISO - Replies (4)

ISO 22157-1:2004 Bamboo — Determination of physical and mechanical properties — Part 1: Requirements

Author: ISO/TC 165 | Size: 0.44 MB | Format: PDF | Quality: Unspecified | Publisher: ISO | Year: 2004 | pages: 26

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This part of ISO 22157 specifies test methods for evaluating the following characteristic physical and strength properties for bamboo: moisture content, mass per volume, shrinkage, compression, bending, shear and tension.
This part of ISO 22157 covers tests on specimens of bamboo that are conducted to obtain data, which can be used to establish characteristic strength functions and to arrive at the allowable stresses. The data can also be used to establish the relationship between mechanical properties and factors, such as moisture content, mass per volume, growth site, position along the culm, presence of node and internode, etc., for qualitycontrol functions.

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TR ISO 22157-2:2004 Bamboo — Determination of physical and mechanical properties — Part 2: Laboratory manual

Author: ISO/TC 165 | Size: 1.28 MB | Format: PDF | Quality: Unspecified | Publisher: ISO | Year: 2004 | pages: 28

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This Technical Report provides informative guidelines for staff in laboratories on how to perform tests according to ISO 22157-1.
NOTE From here on, this Technical Report will only give information on subclauses of ISO 22157-1 if needed; consequently the numbering is not successive.

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  BS EN 480-1, 480-13, 490, 491 and 1110.
Posted by: ir_71 - 03-06-2012, 06:57 PM - Forum: Archive - Replies (1)

Dear friends,

some standards, what I am interested for, have new editions or annexes. These standards are:
1. BS EN 480-1:2006+A1:2011 BS EN 480-1:2006+A1:2011 Admixtures for concrete, mortar and grout. Test methods. Reference concrete and reference mortar for testing
2. BS EN 480-13:2009+A1:2011 Admixtures for concrete, mortar and grout. Test methods. Reference masonry mortar for testing mortar admixtures
3. BS EN 490:2011 Concrete roofing tiles and fittings for roof covering and wall cladding. Product specifications
4. BS EN 491:2011 Concrete roofing tiles and fittings for roof covering and wall cladding. Test methods
5. BS EN 1110:2010 Flexible sheets for waterproofing. Bitumen sheets for roof waterproofing. Determination of flow resistance at elevated temperature

I'll be very thankful if someone who have them or could find them - share them. It is not very urgent.

Thanks in advance.

Regards
IR

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  ASTM D 7382 – 08 Standard Test Methods for Determination of Maximum Dry Unit Weight a
Posted by: ir_71 - 03-06-2012, 06:40 PM - Forum: ASTM - No Replies

ASTM D 7382 – 08 Standard Test Methods for Determination of Maximum Dry Unit Weight and Water Content Range for Effective Compaction of Granular Soils Using a Vibrating Hammer

Author: ASTM Committee D18 | Size: 0.16 MB | Format: PDF | Quality: Unspecified | Publisher: ASTM International | Year: 2008 | pages: 11

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1.1 These test methods cover the determination of the maximum dry unit weight and water content range for effective compaction of granular soils. A vibrating hammer is used to impart a surcharge and compactive effort to the soil specimen.

1.2 These test methods apply to soils with up to 35 %, by dry mass, passing a No. 200 (75-μm) sieve if the portion passing the No. 40 (425-μm) sieve is nonplastic.

1.3 These test methods apply to soils with up to 15 %, by dry mass, passing a No. 200 (75-μm) sieve if the portion passing the No. 40 (425-μm) sieve exhibits plastic behavior.

1.4 These test methods apply to soils in which 100 %, by dry mass, passes the 2-in. (50-mm) sieve.

1.5 These test methods apply only to soils (materials) that have 30 % or less, by dry mass of their particles retained on the ¾-in. (19.0-mm) sieve.

Note 1—For relationships between unit weights and water contents of soils with 30 % or less, by dry mass, of material retained on the ¾-in. (19.0-mm) sieve to unit weights and water contents of the fraction passing the ¾-in. (19.0-mm) sieve, see Practice D 4718.

1.6 These test methods will typically produce a higher maximum dry density/unit weight for the soils specified in 1.2 and 1.3 than that obtained by impact compaction in which a well-defined moisture-density relationship is not apparent. However, for some soils containing more than 15 % fines, the use of impact compaction (Test Methods D 698 or D 1557) may be useful in evaluating what is an appropriate maximum index density/unit weight.

1.7 Two alternative test methods are provided, with the variation being in mold size. The method used shall be as indicated in the specification for the material being tested. If no method is specified, the choice should be based on the maximum particle size of the material.

1.7.1 Method A:

1.7.1.1 Mold—6-in. (152.4-mm) diameter.

1.7.1.2 Material—Passing ¾-in. (19.0-mm) sieve and consistent with the requirements of 1.2 and 1.3.

1.7.1.3 Layers—Three.

1.7.1.4 Time of Compaction per layer—60 ± 5 s.

1.7.2 Method B:

1.7.2.1 Mold—11-in. (279.4-mm) diameter.

1.7.2.2 Material—Passing 2-in. (50-mm) sieve and consistent with the requirements of 1.2 and 1.3.

1.7.2.3 Layers—Three.

1.7.2.4 Time of Compaction per layer—52 ± 5 s at each of 8 locations.

Note 2—Method A (with the correction procedure of Practice D 4718, if appropriate), has been shown (reference thesis or paper) to provide consistent results with Method B. Therefore, for ease of operations, it is highly recommended to use Method A, unless Method B is required due to soil gradations not meeting Practice D 4718.

Note 3—Results have been found to vary slightly when a material is tested at the same compaction effort in different size molds.

1.7.3 Either method, A or B, can be performed with the material in an oven-dried or wet/saturated state, whichever provides the maximum dry unit weight.

1.8 If the test specimen contains more than 5 % by mass of oversize fraction (coarse fraction) and the material will not be included in the test, corrections must be made to the unit weight and water content of the test specimen or to the appropriate field in-place density test specimen using Practice D 4718.

1.9 This test method causes a minimal amount of degradation (particle breakdown) of the soil. When degradation occurs, typically there is an increase in the maximum unit weight obtained, and comparable test results may not be obtained when different size molds are used to test a given soil. For soils where degradation is suspected, a sieve analysis of the specimen should be performed before and after the compaction test to determine the amount of degradation.

1.10 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.11 The vibrating hammer test method may be performed in the field or in the laboratory.

1.12 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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  request papers by private message
Posted by: picci4 - 03-06-2012, 05:44 PM - Forum: FAQs, Q&A, comments - Replies (3)

Hi, is asking for some papers by private message allowed as well?

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  2 articles on Nonlinear Analysis of Stiffend Panel
Posted by: s0p9015 - 03-06-2012, 05:12 PM - Forum: Archive - Replies (2)

Dear All,
I'm looking for these two articles and would be approciated if you can share it with us. The paper details are as follows:


Paper 1:

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Paper 2:
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  Plaxis - Materials Model Manual
Posted by: 3fan - 03-06-2012, 04:47 PM - Forum: Journals, Papers and Presentations - Replies (1)


Plaxis - Materials Model Manual

Size: 13 MB | Format: PDF | Quality: Unspecified | Publisher: PLAXIS | Year: 2011

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Mterial models manual

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  aci 318-05
Posted by: mohamad reza - 03-06-2012, 01:29 PM - Forum: Archive - Replies (2)

hello

i want this code and specially the chapter 21 of it for special provisions for seismic design . i searched on the net but i could not find the complete code that has been had all chapters .
(i saw one that had only 15 chapter)
if you have this code that specially has the chapter 21 please upload here .and be preferably metric (BASE ON SI )

thank you

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  Steel Sheet Piling Design Manual
Posted by: 3fan - 03-06-2012, 10:40 AM - Forum: Foundation & Geotechnics in general - No Replies

Steel Sheet Piling Design Manual

Author: United States Steel | Size: 8.6 MB | Format: PDF | Quality: Original preprint | Publisher: U. S. Department of Transportation /FHWA with permission | Year: 1984 | pages: 135

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The information, including technical and engineering data, figures, tables, designs, drawings, details, suggested procedures, and suggested specifications, presented in this publication are for general information only. While every effort has been made to insure its accuracy, this information should not be used or relied upon for any specific application without independent competent professional examination and verification of its accuracy, suitability and applicability. Anyone making use of the material does so at his own risk and assumes any and all liability resulting from such use.

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  Journal of Vibration and Control - Designing optimal multiple tuned mass dampers
Posted by: lisine - 03-06-2012, 09:24 AM - Forum: Journals, Papers and Presentations - No Replies

Designing optimal multiple tuned mass dampers using genetic algorithms (GAs) for mitigating theseismic response of structures
Journal of Vibration and Control published online 21 February 2012
Mohtasham Mohebbi, Kazem Shakeri, Yavar Ghanbarpour and Hossein Majzoub

Abstract:
In this paper an effective method has been proposed for designing optimal multiple tuned mass dampers (MTMDs) to mitigate the seismic response of structures based on defining an optimization problem which considers the parameters of tuned mass dampers (TMDs) as variables and minimization of maximum structural response as an objective function while a number of constraints have been applied on TMDs response and parameters. The genetic algorithm (GA) has been used successfully for solving the optimization problem. For illustration, for a ten-story linear shear frame subjected to a filtered white noise excitation optimal MTMDs have been designed. The results have shown the simplicity and convergence behavior of the method. It has also been concluded that the performance of MTMDs depends on TMDs mass ratio, TMDs configuration and design criteria where increasing the TMDs mass ratio has improved monotonously the performance of MTMDs especially for the domain of smaller values of the mass ratio, while for this case study the number of TMDs has not been more effective. Testing the optimal MTMDs under near-field and far-field earthquakes shows that the performance of MTMDs has been influenced by input excitation. The capability of the method in considering the effect of higher modes has been shown.

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