Operations Research (Second Edition)
Author(s): P. Rama Murthy
Publisher: New Age International
Date : 2008
Pages : 726
Format : PDF
Language : English
ISBN-10 : 8122420699
ISBN (13) : 978-81-224-2944-2
Book Review Info:
OPERATIONS RESEARCH is a branch of mathematics which is often needed in Civil Engineering for optimization and decision making problems as a supplement for solution of Problems.
Many authors have written books on Operations Research. Most of them have mathematical approach rather than decision-making approach. Actually the subject deals with applied decision theory, so I have dealt with the subject with decision-theory approach. The book has fifteen chapters.
The first five chapters deal with Linear Programming Problems, such as Resource allocation problem, Transportation problem and Assignment problem?both maximization and minimization versions. In the first chapter, the historical background of Operations Research (O.R.) and definition and objective of the subject matter along with model building is discussed to help the learners to have basic knowledge of O.R. Typical problems of mathematical orientation and decision making orientation have been solved. In transportation model and in assignment model, problems useful to Production and Operations Management have been solved to make the students to know the application part of the subject.
The sixth chapter deals with Sequencing model, where the importance and application of the models is dealt in detail. The problem of Replacement is discussed in Chapter-7. Inventory model with certain topics like ABC, VED, FSN, p-system and q-system is discussed to make the students aware of the importance of Inventory model.
Chapter-9 deals with Waiting line model and its application
with certain useful problems and their solutions. Game theory or Competitive theory is discussed in Chapter-10 with certain problems, which have their application in real world situation.
Dynamic programming is dealt in Chapter-11. The problems worked out have practical significance. Chapter-12 deals with Decision theory where the usefulness of decision tree is discussed. Non-Linear programming is briefly discussed in Chapter-14 with certain useful problems. In Chapter -15, the two network techniques i.e. PERT and CPM have been discussed with typical worked out examples.
At the end of the book, objective type questions, which are helpful for competitive examinations are given to help the students to prepare for such examinations.
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Posted by: Tonyanders - 09-02-2010, 11:10 AM - Forum: Geology
- No Replies
Rock Blasting Technique
Here is very usefull paper about effective of blasting vibration under ground on buildings and human
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Dynamic Behaviour of Reinforced Concrete Frames Designed with Direct Displacement-Based Design
Dynamic Behaviour of Reinforced Concrete Frames Designed with Direct Displacement-Based Design
J.D. Pettinga, M.J.N. Priestley
Research Report Rose 2005/02
In this study the established Direct Displacement-Based Design (DDBD) methodology is applied to six vertically regular tube-frames of 2, 4, 8, 12, 16 and 20 storeys to achieve a target design drift of 2%. Preliminary inelastic dynamic time-history analyses show that the method does not adequately control storey-drift and displacement behaviour, thus a series of modifications to the inelastic design displacement profile and lateral force distribution equations are proposed in order to improve the dynamic behaviour of the structures.
Using the proposed methods the six frames are redesigned and analysed at ratios of 0.5x, 1.0x and 2.0x the design earthquake intensity. The inelastic dynamic behaviour is significantly improved from that previously observed with the assumed 2% drift limit well reflected over the height of the frames at the design level intensity.
Using the revised designs the dynamic amplification of column shear forces and bending moments due to higher modes is investigated. The time-history results show that while amplification is present over the height of all the frames, the development of inelasticity in the beams throughout the buildings substantially reduces the higher mode influences compared to the behaviour seen for structural walls. To account for the observed column shear force behaviour, the Modified Modal Superposition (MMS) found to work well for structural walls using DDBD is modified to include the effects of the ductility development and account for intensity changes. For the column moment amplification a simple intensity dependent equation is developed to satisfy the time-history demands. Both approaches are tested and found to give satisfactory results at a range of intensities.
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Author: Mendis, P. A. (Priyantha Anuruddha)
Description Crows Nest, N.S.W. : Engineers Australia, [2001].
ISBN: 0858258080 : 0858258080 :
Subjects: High strength concrete. | Concrete construction.
Available From: htp://www.engaust.com.au E. A. Books, 2 Ernest Place, Crows Nest NSW 2065
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The present report describes the complete results obtained during the evaluation of seismic hazard conducted in the context of the above requirements and provides the characteristics of the seismic motions to be used in the design of the plant.
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dears freinds
dynamic analysis of structures with software versions 14.5-21 robotbat not mention any error messages, but if you throw the dynamic analysis of the same file with the version analyzed robot2009-2011 error messages show the unstable node type "n".
After much checking, I think these versions are a big problem
Blast and Ballistic Loading of Structures
John G Hetherington (Author), PETER D SMITH (Author)
Publisher: Laxton's (November 15, 1994)
Language: English
ISBN-10: 0750620242
ISBN-13: 978-0750620246
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Determination of Wind Loads on Building and Other Structures
The post contains two presentations on determination of wind loads on building and other structures. This is a series of three presentations. However, the last presentation which explains the second method (analytical procedure) of wind load calculations based on ASCE-05, is not finished yet and shall be prepared soon. By the time it is finished, I will post it.
Thanks
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This is a useful spreadsheet which can be used for design of reinforced concrete septic tanks and manholes.
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