Flood and Tsunami Loads: Time-Saving Methods Using the 2018 IBC and ASCE/SEI 7-16
Author(s): David Fanella Edition: 1st Edition Publish Date: 2020 ISBN: 1260461505 Published By: McGraw Hill Related Links:
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Lately I have seen several duplicate threads, a button to indicate that it has already been posted could be helpful to be able to warn and that the forum does not have these duplicates, so that one can help to maintain the organization that is one of the qualities of this forum.
Stability of buildings Parts 1 and 2: General philosophy and framed bracing
Author(s)/Editor(s): A. Gardner (The Institution of Structural Engineers) | Size: 2.08 MB| Format:PDF| Quality:Original preprint| Publisher: IStructE Ltd | Year: 1 July 2014| pages: 52 | ISBN: 9781906335267
This guidance covers the general philosophy of a building's stability system and, specifically, framed vertical bracing.
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Author(s)/Editor(s): Harry R. Cedergren | Size: 50.5 MB| Format:PDF| Quality:Original preprint| Publisher: Wiley-Interscience| Year: January 25, 1997| pages: 496 | ISBN: 047118053X
The definitive practical guide to understanding and solving seepageand drainage problems
Now in its third edition, this unique resource offers simplemethods for analyzing and designing seepage and groundwater controlsystems for all major types of civil engineering works. Completewith solid coverage of seepage principles and flow netconstruction, this book is an invaluable aid to engineeringprofessionals and students in mastering this vital subject.
Seepage, Drainage, and Flow Nets, Third Edition, features:
* Clear explanations of Darcy's law, permeability, and other coreconcepts
* Seepage analyses and drainage designs for earth dams, levees,foundations, earth slopes, roads, airfields, streets, parking lots,and more
* Information on contemporary topics, including "wick" drains,"fin" drains, and the protection of groundwaters from contamination
* An assessment of computer solutions to seepage and drainageproblems
* Over 100 examples of flow nets, ranging from the simple to thecomplex --accompanied by step-by-step instructions
* Useful chapter references to facilitate further study.
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This method covers procedures for preparing and testing untreated subgrade soils and untreated base/subbase materials for determination of resilient modulus (Mr) under conditions representing a simulation of the physical conditions and stress states of materials beneath flexible pavements subjected to moving wheel loads.
The methods described are applicable to undisturbed samples of natural and compacted subgrade soils, and to disturbed samples of subgrade soils and untreated base/subbase prepared for testing by compaction in the laboratory.
In this method, stress levels used for testing specimens for resilient modulus are based on the location of the specimen within the pavement structure. Samples located within the base and subbase are subjected to different stress levels as compared to those specimens that are from the subgrade. Generally, specimen size for testing depends on the type of material based on the gradation and the plastic limit of the material as described in a later section.
The value of resilient modulus determined from this procedure is a measure of the elastic modulus of untreated base and subbase materials and subgrade soils recognizing certain nonlinear characteristics. . Resilient modulus values can be used with structural response analysis models to calculate the pavement structural response to wheel loads, and with pavement design procedures to design pavement structures.
This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Focusing on the fundamentals of structural dynamics required for earthquake blast resistant design, Structural Dynamics in Earthquake and Blast Resistant Design initiates a new approach of blending a little theory with a little practical design in order to bridge this unfriendly gap, thus making the book more structural engineer-friendly. This is attempted by introducing the equations of motion followed by free and forced vibrations of SDF and MDF systems, D’Alembert’s principle, Duhammel’s integral, relevant impulse, pulse and sinusoidal inputs, and, most importantly, support motion and triangular pulse input required in earthquake and blast resistant designs, respectively. Responses of multistorey buildings subjected to earthquake ground motion by a well-known mode superposition technique are explained. Examples of real-size structures as they are being designed and constructed using the popular ETABS and STAAD are shown. Problems encountered in such designs while following the relevant codes of practice like IS 1893 2016 due to architectural constraints are highlighted. A very difficult constraint is in avoiding torsional modes in fundamental and first three modes, the inability to get enough mass participation, and several others. In blast resistant design the constraint is to model the blast effects on basement storeys (below ground level). The problem is in obtaining the attenuation due to the soil. Examples of inelastic hysteretic systems where top soft storey plays an important role in expending the input energy, provided it is not below a stiffer storey (as also required by IS 1893 2016), and inelastic torsional response of structures asymmetric in plan are illustrated in great detail. In both cases the concept of ductility is explained in detail. Results of response spectrum analyses of tall buildings asymmetric in plan constructed in Bengaluru using ETABS are mentioned. Application of capacity spectrum is explained and illustrated using ETABS for a tall building. Research output of retrofitting techniques is mentioned. Response spectrum analysis using PYTHON is illustrated with the hope that it could be a less expensive approach as it is an open source code. A new approach of creating a fictitious (imaginary) boundary to obtain blast loads on below-ground structures devised by the author is presented with an example.
Aimed at senior undergraduates and graduates in civil engineering, earthquake engineering and structural engineering, this book:
Explains in a simple manner the fundamentals of structural dynamics pertaining to earthquake and blast resistant design
Illustrates seismic resistant designs such as ductile design philosophy and limit state design with the use of capacity spectrum
Discusses frequency domain analysis and Laplace transform approach in detail
Explains solutions of building frames using software like ETABS and STAAD
Covers numerical simulation using a well-known open source tool PYTHON
Biography
B.K. Raghu Prasad retired as a professor from Civil Engineering deparetment of Indian Academy of Sciences, Bangalore, India and his areas of research are fracture mechanics of concrete, structural dynamics, earthquake resistant design, finite element and boundary element methods. He has more than 60 research papers to his credit and he has supervised more than 25 students for thier Ph.D degrees.
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Problems in nonlinear structural dynamics and critical excitation with elastic-plastic structures are typically addressed using time-history response analysis, which requires multiple repetitions and advanced computing. This alternative approach transforms ground motion into impulses and takes an energy balance approach.
This book is accessible to undergraduates, being based on the energy balance law and the concepts of kinetic and strain energies, and it can be used by practitioners for building and structural design. This presentation starts with simple models that explain the essential features and extends in a step-by-step manner to more complicated models and phenomena.
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Posted by: poolmand - 01-03-2022, 07:28 AM - Forum: AASHTO
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LRFD specifications for structural supports for highway signs, luminaires, and traffic signals
| Size: 7.83 MB| Format:PDF| Quality:Original preprint| Publisher: American Association of State Highway and Transportation Officials| Year: 2015| pages: 342 | ISBN: 1680158252
The 1st Edition of this book incorporates and builds upon the design specifications found in the Sixth Edition of Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, which it supersedes. The specification includes current research on LRFD calibration, loads, and resistances plus relevant specifications from other AASHTO documents. Completely new sections on Fabrication, Construction, Inspection, and Asset Management based upon best practices have also been added. Read more...
Abstract: The 1st Edition of this book incorporates and builds upon the design specifications found in the Sixth Edition of Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, which it supersedes. The specification includes current research on LRFD calibration, loads, and resistances plus relevant specifications from other AASHTO documents. Completely new sections on Fabrication, Construction, Inspection, and Asset Management based upon best practices have also been added
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