All about Instruments: From Trundle Wheels to Atomic Clocks
Conceived as a reference manual for practicing engineers, instrument designers, service technicians and engineering students. The related fields of physics, mechanics and mathematics are frequently incorporated to enhance the understanding of the subject matter. Historical anecdotes as far back as Hellenistic times to modern scientists help illustrate in an entertaining manner ideas ranging from impractical inventions in history to those that have changed our lives.
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PEER Report No. 2010/05: Guidelines for Performance-Based Seismic Design of Tall Buildings
The PEER Center is pleased to announce the release of the “Guidelines for Performance-Based Seismic Design of Tall Buildings” that was developed by PEER’s Tall Buildings Initiative.
The Guidelines present a recommended alternative to the prescriptive procedures for seismic design of buildings contained in standards such as ASCE 7 and the International Building Code (IBC). They are intended primarily for use by structural engineers and building officials engaged in the seismic design and review of individual tall buildings.
Properly executed, the Guidelines are intended to result in buildings that are capable of achieving the seismic performance objectives for Occupancy Category II buildings intended by ASCE 7. Alternatively, individual users may adapt and modify these Guidelines to serve as the basis for designs intended to achieve higher seismic performance objectives.
The Guidelines were developed considering the seismic response characteristics of tall buildings, including relatively long fundamental vibration period, significant mass participation and lateral response in higher modes of vibration, and a relatively slender profile. Although the underlying principles are generally applicable, the Guidelines were developed considering seismic hazard typical in the Western United States.
The Working Group members that prepared the guidelines include:
- Yousef Bozorgnia (PEER, UC Berkeley)
- C.B. Crouse (URS Consultants)
- Ronald Hamburger (Simpson Gumpertz & Heger
- Ronald Klemencic (Magnusson Klemencic Associates)
- Helmut Krawinkler (Stanford University)
- James Malley (Degenkolb Engineers)
- Jack Moehle (PEER, UC Berkley)
- Farzad Naeim (John A. Martin & Associates)
- Jonathan Stewart (UC Los Angeles)
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Value and Risk Management: A Guide to Best Practice
Author: Michael F. Dallas | Size: 9.6 MB | Format:PDF | Publisher: Wiley-Blackwell | Year: February 15, 2006 | pages: 400 | ISBN: 140512069X
Published on behalf of the Chartered Institute of Building and endorsed by a range of construction industry institutes, this book explains the underlying concepts of value and risk, and how they relate to one another. It describes the different issues to be addressed in a variety of circumstances and at all stages of a project's life and reviews a number of commonly used and effective techniques, showing how these may be adapted to suit individuals' styles and circumstances.
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Author: Michael Adams, Jennifer Nicks, Tom Stabile, Jonathan Wu, Warren Schlatter, and Joseph Hartmann | Size: 8.81 MB | Format:PDF | Publisher: FHWA | Year: 2011 | pages: 174
This manual outlines the state-of-the-art and recommended practice for designing and constructing Geosynthetic Reinforced Soil (GRS) technology for the application of the Integrated Bridge System (IBS). The procedures presented in this manual are based on 40 years of State and Federal research focused on GRS technology as applied to abutments and walls.
This manual was developed to serve as the first in a two-part series aimed at providing engineers with the necessary background knowledge of GRS technology and its fundamental characteristics as an alternative to other construction methods. The manual presents step-by-step guidance on the design of GRS-IBS. Analytical and empirical design methodologies in both the Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD) formats are provided. Material specifications for standard GRS-IBS are also provided. Detailed construction guidance is presented along with methods for the inspection, performance monitoring, maintenance, and repair of GRS-IBS. Quality assurance and quality control procedures are also covered in this manual. The second part of this series (FHWA-HRT-11-027) is a synthesis report that covers the background of GRS-IBS and provides other supporting information to substantiate the design method.
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I've recently discussed with my superior regarding the ethical of submitting computer model to the owner. I raised question basically because i don't agree with that especially first it is not part of the contract (contract just stated drawings and reports). Second: this is what i don't like that the computer model will likely be given to third party (other consultant that is our business competitor) for checking or verification. What i mean about the latter, it is really unethical that we already serve the food (drawings and reports) and then give away also the recipe (the model, CAD etc). From my point of few, the owner actually don't care about the model really they just want the structure to be build asap and safe so it must be the third party who ask for the model, because they are asked only to verify of course for their benefit ask the owner for our model. Without doubt they will never develop their own model because they know it is easier to check from the existing model (as i would be if i am the 3rd party :p) with the timeframe they have. So i would like to know about your opinion related to the above mention problem. Thanks
Technical Manual for Design and Construction of Road Tunnels
The increased use of underground space for transportation systems and the increasing complexity and constraints of constructing and maintaining above ground transportation infrastructure have prompted the need to develop this technical manual. This FHWA manual is intended to be a single-source technical manual providing guidelines for planning, design, construction and rehabilitation of road tunnels, and encompasses various types of tunnels including mined and bored tunnels (Chapters 6-10), cut-and-cover tunnels (Chapter 5), immersed tunnels (Chapter 11), and jacked box tunnels (Chapter 12).
The scope of the manual is primarily limited to the civil elements of design and construction of road tunnels. FHWA intended to develop a separate manual to address in details the design and construction issues of the system elements of road tunnels including fire life safety, ventilation, lighting, drainage, finishes, etc. This manual therefore only provides limited guidance on the system elements when appropriate.
Accordingly, the manual is organized as presented below.
Chapter 1 is an introductory chapter and provides general overview of the planning process of a road tunnel project including alternative route study, tunnel type study, operation and financial planning, and risk analysis and management.
Chapter 2 provides the geometrical requirements and recommendations of new road tunnels including horizontal and vertical alignments and tunnel cross section requirements.
Chapter 3 covers the geotechnical investigative techniques and parameters required for planning, design and construction of road tunnels. In addition to subsurface investigations, this chapter also addresses in brief information study; survey; site reconnaissance, geologic mapping, instrumentation, and other investigations made during and after construction.
Chapter 4 discusses the common types of geotechnical reports required for planning, design and construction of road tunnels including: Geotechnical Data Report (GDR) which presents all the factual geotechnical data; Geotechnical Design Memorandum (GDM) which presents interpretations of the geotechnical data and other information used to develop the designs; and Geotechnical Baseline Report (GBR) which defines the baseline conditions on which contractors will base their bids upon.
Chapter 5 presents the construction methodology and excavation support systems for cut-and-cover road tunnels, describes the structural design in accordance with the AASHTO LRFD Bridge Design Specifications, and discusses various other design issues. A design example is included in Appendix C.
Chapters 6 through 10 present design recommendations and requirements for mined and bored road tunnels.
Chapters 6 and 7 present mined/bored tunneling issues in rock and soft ground, respectively. They present various excavation methods and temporary support elements and focus on the selection of temporary support of excavation and input for permanent lining design. Appendix D presents common types of rock and soft ground tunnel boring machines (TBM).
Chapter 8 addresses the investigation, design, construction and instrumentation concerns and issues for mining and boring in difficult ground conditions including: mixed face tunneling; high groundwater pressure and inflow; unstable ground such as running sands, sensitive clays, faults and shear zones, etc.; squeezing ground; swelling ground; and gassy ground.
Chapter 9 introduces the history, principles, and recent development of mined tunneling using Sequential Excavation Method (SEM), as commonly known as the New Austrian Tunneling Method (NATM). This chapter focuses on the analysis, design and construction issues for SEM tunneling.
Chapter 10 discusses permanent lining structural design and detailing for mined and bored tunnels based on LRFD methodology, and presents overall processes for design and construction of permanent tunnel lining. It encompasses various structural systems used for permanent linings including cast-in-place concrete lining, precast concrete segmental lining, steel line plate lining and shotcrete lining. A design example is presented in Appendix G.
Chapter 11 discusses immersed tunnel design and construction. It identifies various immersed tunnel types and their construction techniques. It also addresses the structural design approach and provides insights on the construction methodologies including fabrication, transportation, placement, joining and backfilling. It addresses the tunnel elements water tightness and the trench stability and foundation preparation requirements.
Chapter 12 presents jacked box tunneling, a unique tunneling method for constructing shallow rectangular road tunnels beneath critical facilities such as operating railways, major highways and airport runways without disruption of the services provided by these surface facilities or having to relocate them temporarily to accommodate open excavations for cut and cover construction.
Chapter 13 provides general procedure for seismic design and analysis of tunnel structures, which are based primarily on the ground deformation approach (as opposed to the inertial force approach); i.e., the structures should be designed to accommodate the deformations imposed by the ground.
Chapter 14 discusses tunnel construction engineering issues, i.e., the engineering that must go into a road tunnel project to make it constructible. This chapter examines various issues that need be engineered during the design process including project cost drivers; construction staging and sequencing; health and safety issues; muck transportation and disposal; and risk management and dispute resolution.
Chapter 15 presents the typical geotechnical and structural instrumentation for monitoring: 1), ground movement away from the tunnel; 2), building movement for structures within the zone of influence; 3), tunnel movement of the tunnel being constructed or adjacent tubes; 4), dynamic ground motion from drill & blast operation, and 5), groundwater movement due to changes in the water percolation pattern.
Lastly, Chapter 16 focuses on the identification, characterization and rehabilitation of structural defects in a tunnel system.
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Structural Mechanics (College work out series) 1 ed.
Author: Ray Hulse and Jack Cain | Size: 26.25 MB | Format:PDF | Publisher: Palgrave Macmillan | Year: 1991 | pages: 307 | ISBN: 0333535499
This first edition of Structural Mechanics is an expanded and revised successor to the highly successful first edition, which over the last ten years has become a widely adopted standard first year text. The addition of five new programmes, together with some updating of the original text, now means that this book covers most of the principles of structural mechanics taught in the first and second years of civil engineering degree courses.
· Suitable for independent study or as a compliment to a traditional lecture-based course
· Adopts a programmed learning format, with a focus on student-centred learning
· Contains many examples, carefully constructed questions and graded practical problems, allowing the reader to work at their own pace, and assess their progress whilst gaining confidence in their ability to apply the principles of Structural Mechanics
· Now covering the major part of the Structural Mechanics/Analysis syllabuses of most Civil Engineering degree courses up to second year level.
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Dear members and friends:
I would suggest improvements in the "BOOKS REQUEST SECTION" in order to improve the performance of responses to requests.
All of us are proud of the big number of answers in this section! and Fortunately we have seen many requests met, and with great stuff, but mostly with a link only, instead of a complete post (of course with complete description).
The idea would be to create a mechanism to reward (score) for members, responding to a request, make a complete post in the correct section (using the forum PostGenerator) and just creating a link from the request for the full posting.
I think this would drastically increase the quality of the whole forum and would reward the good posts, and we expect to reduce good answers virtually unnoticed by the simplicity of the post (single link)
Design Guide for Steel Railway Bridges (SCI publication)
By D. C Iles
Publisher: The Steel Construction Institute
Number Of Pages: 157
Publication Date: 2004
ISBN-10 / ASIN: 1859421504
ISBN-13 / EAN: 9781859421505
Abstract:
Covers functional and construction requirements, forms of construction, design standards and procedures, designing for strength, for fatigue endurance and bridge details.
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I'm studying in master of construction management and also finding a thesis topic in this field.
My interested topic are about claim, delay and safety. Could anybody get me some idea or topics? If anyone has another topics that interesting please suggest me that...
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