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.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
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.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
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.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
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...
Building Technology- ( Insulated concrete form ICF)
this is the first post under the title ( Building Technology )
the sub-title of this video is (ICF ) ( Insulated concrete form )
later on, I will share the related and similar materials here
regards
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
NCHRP REPORT 575 - Legal Truck Loads and AASHTO Legal Loads for Posting
Size: 3,7 MB | Format: PDF | pages: 84
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Author: Phillip C. Pierce, P.E., Robert L. Brungraber, P.E., Ph.D., Abba Lichtenstein, P.E., Scott Sabol, J.J. Morrell | Size: 8.16 MB | Format:PDF | Publisher: FHWA | Year: 2005 | pages: 346
This manual provides guidance to those involved with all aspects of the work, from initial inspection and evaluation, through the engineering of rehabilitation, to construction issues. Broadly speaking, this manual covers general terminology and historic development of covered bridges. The manual also addresses loads, structural analysis, connections, and design issues. The last six chapters contain discussions of evaluation, maintenance, strengthening, and preservation of existing covered bridges; historic considerations of existing structures; and provide a state-of-the-art guide on wood preservatives for covered bridges. Historic preservation requirements as they relate to the U.S. Department of Interior standards for these important and unusual structures also are provided. The appendices include an extensive series of case studies.
The manual focuses on the nuances of the engineering aspects of covered bridges, including some issues not addressed currently by national bridge specifications. The chapter on timber connections provides a comprehensive discussion of covered bridge joinery and represents an important contribution to covered bridge engineering.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
The purpose of this manual is to provide general information, criteria and new methodologies for the calculation, project and execution of concrete reinforced works with fibers. They will be presented, therefore, the obtained data of the investigations made by Maccaferri, oriented to the study of the behavior, resistance and efficiency of such structures. The Maccaferri intention is to have new and useful contributions to concrete works reinforced with fibers, helping the consultants and contractors work who act in the segment of structural engineering. For a more detailed analysis on the arguments treated here, we suggest to consult the specific publications that are indicated in the bibliographical references. This manual they will be presented and discussed theoretical foundations, numerical examples of the of the concrete reinforced with fibers applications and details of the use of the Wirand® metallic fibers and Fibromac® plastic fibers. Maccaferri is placed to total disposition, to give solution to problems, cradle in its experience, acquired along more than 100 years of existence in all the world.
This handbook is very useful for everyone who have interests in the field of steel fibers reinforced concrete.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
![[Image: 42873738030214895629.jpg]](https://pic.civilea.com/images/42873738030214895629.jpg)
![[Image: info.png]](https://forum.civilea.com/postgen/info.png)
![[Image: Download.png]](https://forum.civilea.com/postgen/Download.png)
![[Image: 71362992968605321865.jpeg]](https://pic.civilea.com/images/71362992968605321865.jpeg)
![[Image: info.png]](https://forum.civilea.com/postgen/icon/info.png){kind=icon}
![[Image: Download.png]](https://forum.civilea.com/postgen/icon/Download.png){kind=icon}
![[Image: 43393062002813756185.jpg]](https://pic.civilea.com/images/43393062002813756185.jpg)
![[Image: 33124422347934258678.jpg]](https://pic.civilea.com/images/33124422347934258678.jpg)
![[Image: 34187034846819995320.jpg]](https://pic.civilea.com/images/34187034846819995320.jpg)
![[Image: 99407631411878378904.jpg]](https://pic.civilea.com/images/99407631411878378904.jpg)
![[Image: 31911346528553970256.jpg]](https://pic.civilea.com/images/31911346528553970256.jpg)
![[Image: 62006050401416140251.jpg]](https://pic.civilea.com/images/62006050401416140251.jpg)