The fifth edition of the Highway Capacity Manual (HCM2010), which updates HCM2000, will significantly update how engineers and planners assess the traffic and environmental effects of highway projects: It is the first HCM to provide an integrated multimodal approach to the analysis and evaluation of urban streets from the points of view of automobile drivers, transit passengers, bicyclists, and pedestrians; It is the first to address the proper application of micro-simulation analysis and the evaluation of those results; It is the first to discuss active traffic management in relation to both demand and capacity; and It is the first to provide specific tools and generalized service volume tables, to assist planners in quickly sizing future facilities.
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Description:
This comprehensive and well-organized text provides a masterly exposition of the fundamentals of analysis and design of reinforced concrete shells and folded plates, commonly known as thin concrete roof structures. Divided into 20 chapters, the book presents practical designs of different types of domes, cylindrical shells, paraboloids, conoids, and groined shells, as well as various types of folded plates. The text also incorporates tables from ASCE Manual No. 31.
The book explains the subject in such a way that it can be easily understood even by students who have a basic knowledge of mathematics. Students will find the chapters on Folded Plates particularly useful as these structures are easy to build. After studying the book, their analysis and design can be done with greater ease.
Key Features :
Explains step-by-step the procedure for the design of various types of shells and folded plates.
The book is lecture-based, each chapter dealing with one topic. (This enables the teachers to plan their lectures in a proper fashion.)
Provides a large number of worked-out examples and review questions at ends of chapters, which are illustrative and act as brain teasers.
Gives large number of diagrams to illustrate the concepts discussed.
This reader friendly book is intended as a text for the postgraduate students of Civil Engineering/Architecture. As with all the books of Prof. P.C. Varghese, who brings in all his years of experience and expertise into his work, this book too would be of enormous help to practising engineers and architects besides the students.
Contents:
contents
Foreword • Preface • Introduction
1. Historical Development of Modern Shell Roofs
2. Common Types of Shell Roofs
3. Classical Method of Analysis of Reinforced Concrete Shells
4. Spherical Domes and Conical Roofs
5. Analysis of Circular Cylindrical Shells
6. Beam Theory for Long Cylindrical Shells
7. Static Checks of Results of Analysis of Cylindrical Shells
8. Analysis of Circular Cylindrical Shells with Edge Beams
9. Detailing of Steel in Cylindrical Shells
10. Design of Transverse Stiffeners of Cylindrical Shells
11. Paraboloid Shells (Hyperbolic Paraboloids)
12. Parabolic Conoids
13. Groined Shells
14. Design and Construction of a Groined Shell—An Example
15. Folded Plates—Preliminary Analysis
16. Folded Plates—Correction Analysis—Simpson’s Method
17. Example to Illustrate Complete Analysis of Folded Plates
18. Design of Reinforcements in Folded Plates and Supporting Diaphragms
19. Buckling of R.C. Roof Shells
20. Design of Pyramid Roofs APPENDIX
A. A Short History of Masonry Domes
B. Funicular Shells
C. Geometric Curves
D. Tension Structures
E. Tables from ASCE Manual No. 31
Bibliography • Index
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This is a google ripped version of the book. Considerable time and effort has been put in obtaining this material from Google books. This version is almost complete with only about 25 pages missing from the whole book. These missing pages have been substituted by a blank page. Perhaps, some other person may scan and add the missing pages.
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DRIFT CAPACITY OF REINFORCED CONCRETE COLUMNS SUBJECTED TO DISPLACEMENT REVERSALS
Author: Santiago Pujol | Size: 0.4 MB | Format:PDF | Quality:Unspecified | Year: August 2002 | pages: 77
In previous tests of columns under displacement reversals in the inelastic range of response, different arbitrary displacement histories have been used. Comparisons of drift-capacity data from columns tested under different displacement histories can only be made if displacement-history effects are ignored. Possibly because of this reason, currently available methods for column drift capacity ignore displacement-history effects. To investigate whether drift capacity is a function of displacement history, sixteen cantilever columns were tested under various displacement patterns. The test results indicate that column drift capacity is sensitive to displacement history. For columns cycled beyond yield, drift capacity decreases as a function of the amplitude and number of cycles the column has experienced. Based on measurements of average unit strains in the transverse reinforcement, a model is proposed for estimating the drift capacity for a given column under any symmetric displacement pattern.
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Dear all,
I'm looking for AASHTO PP Series (espacially AASHTO PP 44) dealing with quantifying cracks in asphalt pavements measurements.
Could anyone helps,
Thanks in advances.
Article/eBook Full Name: Two case studies for the effect of beam offset in finite element calculations
Author(s): Nader G. Zamani, Nima Gharib, P. N. Kaloni
Edition: International Journal of Mechanical Engineering Education, Volume 37, Number 2
Publish Date: April 2009
ISBN: 0306-4190
Published By: Manchester University Press
Related Links:
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Collapse Modelling Analysis of a Precast Soft-Storey Building in Melbourne
Author: A. Wibowo , J.L. Wilson , E.F. Gad1, , N.T.K. Lam , P. Collier | Size: 0.3 MB | Format:PDF | Quality:Unspecified | Publisher: AUSTRALIAN EARTHQUAKE ENGINEERING SOCIETY; 2009 CONFERENCE, Newcastle, New South Wales, 11-13 December 2009 | Year: 2009 | pages: 11
Experimental field testing of a soft storey building in Melbourne has been undertaken
by Swinburne University of Technology in collaboration with The University of
Melbourne. The upper levels that consisted of precast walls and slabs were demolished
to the first floor. The soft storey open ground floor was a precast concrete frame with
connections significantly weaker than the members they connected. Four tests were
conducted with combination between load directions (strong and weak) and restraints of
ground slab (with or without ground slab). The experimental results show that soft
storey columns were found to have significant displacement capacity irrespective of
strength degradation.
An analytical model has been developed to predict force-displacement relationship of
the tested frame. The model includes the influences of: a) connection strength at column
ends; b) gravity rocking strength; and c) ground slab restraint. Results from the
developed model were found to be in excellent agreement with experimental test results,
showing that the top connection in the form of an unbonded high strength steel bars
dominated the overall load-deflection behaviour in the strong direction. However, the
gravity rocking mechanism dominated the behaviour in the weak direction. The
presence of the ground slab provides additional restraint to the column and significant
additional lateral strength to the system.
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Author: Seval Pinarbasi , Dimitrios Konstantinidis , James M. Kelly | Size: 0.2 MB | Format:PDF | Quality:Unspecified | Publisher: 10th World Conference on Seismic Isolation, Energy Dissipation and Active Vibrations Control of Structures, Istanbul, Turkey, May 28-31, 2007 | Year: 2007 | pages: 12
Reconnaissance reports following strong earthquakes time and again point to the widespread
damage caused to buildings with soft stories. This study is motivated by the need to provide
mitigation strategies for these types of structures. There exists a general belief among
practicing engineers that seismic isolation can only be effective in reducing the seismic
demand for regular, uniformly stiff buildings but not for soft-story buildings since it is
thought that the flexibility of the soft story deems the isolation ineffective. This paper
present results from an extensive numerical investigation that dispels this misconception. It
looks at the results of modal and nonlinear time-history analyses conducted on simplified
models of a hypothetical five-story reinforced concrete building with a soft ground story to
draw conclusions on the efficiency of seismic isolation as the flexibility of the soft story is
increased. Comparison is made with how soft-story flexibility affects the corresponding
fixed-base building. Practical ways, if necessary, for increasing the efficiency of the
technique is also examined, showing that it benefits greatly by stiffening the soft story.
Success of the linear theory developed for base-isolated structures in predicting the basic
response parameters (both modal and seismic) when the structure has a soft ground story is
also assessed. The paper confirms that seismic isolation can be used as a viable mitigation
technique for soft-story buildings.
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.
The present study evaluates how the soft first story irregularity condition should be defined: (a) as a significant
reduction of the lateral shear stiffness of all resisting frames within a given story, as established in the seismic provisions
of Mexican building codes or, (b) as a substantial reduction of the lateral shear stiffness of one or more resisting frames
within a given story, as proposed by the author. Both definitions are evaluated through nonlinear dynamic analyses of
buildings systems with a suspected soft first story condition in order to discern which option is closer to define the soft fist
story condition.
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SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and SAMPLES OF IZMIT-DUZCE
Author: Dr. Mizan DOĞAN Dr. Nevzat KIRAÇ Dr. Hasan GÖNEN | Size: 1.00 MB | Format:PDF | Quality:Unspecified | Publisher: Department of Civil Engineering, Osmangazi University Eskisehir- TURKEY | Year: 2002 | pages: 8.
Due to the considerations of occupancy and architectural appearance, especially in the entrance floor
and on one of the intermediate levels, inner sections between columns and outer walls are not
constructed in the way they are done in other storeys or rigidity of the single structures in the storeys
are different. These sections in the buildings are generally used for sales stores, restaurants, bank
branches, installations and lightening. These are labelled as soft storeys in literature. Form the studies
and investigation of the quake results, it is observed that partitioning walls and beam fillings enable
buildings to gain great rigidity. Although irregularities of soft storey have taken place in many
construction codes, it is observed that most of the damage constructions suffered result in this kind of
irregularities. In the current study the focus, depending on the investigations on soft storeys conducted
in quake regions of Izmit and Duzce, was on the investigation of the effect of a soft storey on the
behaviour of a construction. Also solutions were investigated for making the soft storeys in the present
constructions and in the ones to be built resistant to quake.
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Soft Story Risk Reduction: Lessons from the Berkeley Data
Author: David Bonowitz, S.E. 605A Baker Street San Francisco, CA 94117 [email protected] Sharyl Rabinovici, Ph.D. | Size: 4 MB | Format:PDF | Quality:Unspecified | Publisher: A Special Projects and Initiatives report to Earthquake Engineering Research Institute | Year: January 2013 | pages: 92 | ISBN: 978-1-932884-58-6
The authors gratefully acknowledge support from the EERI Endowment Fund and the Special
Projects & Initiatives Committee. We also thank Joan MacQuarrie, former Building Official
of the City of Berkeley, for making the evaluation reports available for our review. The
Applied Technology Council made available a draft version of the FEMA P-807 technical
criteria applied in Section 5, and Mike Korolyk of Tipping Mar Associates, Berkeley, helpfully
reviewed some initial calculations. The Structural Engineers Association of Northern California’s
Existing Buildings Committee, Marko Schotanus, Chair, provided valuable feedback
on preliminary findings.
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