Dear All,
herein
Civil - Prestressed Concrete Structures Lectures
by Prof. A.K.Sengupta Department of Civil Engineering IIT Madras
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Hydraulic Design of Highway Culverts, Second Edition
Author: Jerome M. Norman, Robert J. Houghtalen, and William J. Johnston | Size: 8,6 MB | Format:PDF | Publisher: National Highway Institute | Year: 2001 | pages: 368 | ISBN: none
Hydraulic Design series No. 5 combines culvert design information previously contained in Hydraulic Engineering Circulars (HEC) No. 5, No. 10, and No. 13 with hydrologic, storage routing, and special culvert design information. The result is a comprehensive culvert design publication. Hydrologic analysis methods are described, and references cited. Culvert design methods are presented for both conventional culverts and culverts with inlet improvements. Storage routing techniques are included which permit the designer to account for ponding effects upstream of the culvert. Unique culvert applications, erosion and sediment control, debris control, structural aspects, and long-span culverts are discussed and references cited. Inlet control, outlet control, and critical depth design charts, many of which are newly developed, are included for a variety of culverts sizes, shapes, and materials. New dimensionless culvert design charts are provided for the design of culverts lacking conventional design nomographs and charts. The appendices of the publication contain the equations and methodology used to construct the design charts, information of the hydraulic resistance of culverts, and methods of optimizing culvert design using performance curves and inlet depression. Calculation forms are provided for most of the design methodologies in the manual.
The second edition corrected minor errors and provided both SI and English (U.S. customary) units for all equations and design charts.
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This European Standard deals with the requirements and the basic performance criteria and specifies minimum
values where appropriate for precast hollow core slabs made of prestressed or reinforced normal weight concrete
according to EN 1992-1-1:2004.
This European Standard covers terminology, performance criteria, tolerances, relevant physical properties, special
test methods, and special aspects of transport and erection.
Hollow core elements are used in floors, roofs, walls and similar applications. In this European Standard the
material properties and other requirements for floors and roofs are dealt with; for special use in walls and other
applications, see the relevant product standards for possible additional requirements.
The elements have lateral edges provided with a longitudinal profile in order to make a shear key for transfer of
vertical shear through joints between contiguous elements. For diaphragm action the joints have to function as
horizontal shear joints.
The elements are manufactured in factories by extrusion, slipforming or mouldcasting.
The application of the standard is limited for prestressed elements to a maximum depth of 450 mm and a maximum
width of 1 200 mm. For reinforced elements the maximum depth is limited to 300 mm and the maximum width
without transverse reinforcement to 1 200 mm and with transverse reinforcement to 2 400 mm.
The elements may be used in composite action with an in situ structural topping cast on site.
The applications considered are floors and roofs of buildings, including areas for vehicles in the category F and G
of EN 1991-2 which are not subjected to fatigue loading. For building in seismic zones additional provisions are
given in EN 1998-1.
This European Standard does not deal with complementary matters. E.g. the slabs should not be used in roofs
without additional protection against water penetration
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Posted by: ir_71 - 12-23-2010, 11:09 AM - Forum: ISO
- Replies (2)
ISO 12737:2005
Metallic materials - Determination of plane-strain fracture toughness
Author: ISO TC 164/SC 4 | Size: 0.4 MB | Format:PDF | Publisher: ISO | Year: 2005 | pages: 23
ISO 12737:2005 specifies the ISO method for determining the plane-strain fracture toughness of homogeneous metallic materials using a specimen that is notched and precracked by fatigue, and subjected to a slowly increasing crack displacement force.
Revised by: ISO 12737:2010
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Fracture mechanics toughness tests. Method for determination of KIc, critical CTOD and critical J values of metallic materials
Replaced By BS EN ISO 12737:1999, Partially replaced by BS EN ISO 12737:1999.
(missing pages)
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BS 7448-3:2005 Fracture mechanics toughness tests. Method for determination of fracture toughness of metallic materials at rates of increase in stress intensity factor greater than 3.0 MPa m0.5 s-1
This part of BS 7448 describes a method for determining the opening mode plane strain fracture toughness
KIc, the critical crack tip opening displacement (CTOD) fracture toughness and the critical J fracture
toughness of metallic materials. The method uses fatigue precracked specimens tested in displacement
control at rates of increase in stress intensity factor greater than 3.0 MPa·m0.5sp1 but less than
3 000 MPa·m0.5sp11) during the initial elastic deformation. Stress intensity factors greater than
3 000 MPa·m0.5sp1 are covered in Annex A. These rates are greater than those permitted in BS 7448-1.
The definition of fracture toughness values relevant to particular structural integrity assessments is
outside the scope of this British Standard.
NOTE This standard does not cover integrity assessments. Such assessments are covered in BS 7910.
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BS 7448-4:1997 Fracture mechanics toughness tests. Method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials
This Part of BS 7448 gives a method for determining the resistance to stable crack extension of metallic
materials. The method uses fatigue precracked specimens. These are tested in displacement controlled
loading at a constant rate of increase in stress intensity factor within the range 0.5 MPa·m0.5s–1
to 3.0 MPa·m0.5s–1 1) during the initial elastic deformation. Resistance to crack extension is characterized
in terms of the variation in crack tip opening displacement (CTOD) and/or J with stable crack extension.
These characterizations are referred to in this standard as and J R-curves, respectively.
The method is only suitable for tests on specimens that exhibit stable crack extension. If unstable fracture
or crack arrest occurs in any of the tests in an R-curve determination it is necessary also to assess the test
results in accordance with BS 7448-1.
Testing requirements and analysis procedures are given which enable crack extension resistance curves to
be calculated from both straight notch and stepped notch compact specimens and single edge notch bend
specimens. Individual fracture parameters are also defined for CTOD and J at a point where stable crack
extension is close to the onset of initiation.
The definition of fracture toughness values relevant to particular structural integrity assessments is
outside the scope of this British Standard.
NOTE Publications of relevance to the subject matter covered by this Part of BS 7448 are listed in the bibliography in Annex A.
A system of crack plane identification is given in Annex B.
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The following .xls file can be used to remove internal protections in excel (i.e. workbook & worksheet).
Instructions after downloading the file from the given link:
1. Load the file: "allinternalpasswords.xls" in excel
2. If asked, Enable Macros
3. Go to: File > Open...
4. Select and open the excel file you want to remove the protection from
5. Go to: Add-Ins > Remove Passwords or if older version execute/run macro with name "allinternalpasswords.xls!AllInternalPasswords"
6. After macro finishes task (it takes some seconds depending also on PC speed), save the unprotected workbook with a new name.
7. Your coffee is getting cold, have a sip now.
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WARNING: SOME EXCEL WORKBOOK AUTHORS INCLUDE ALGORITHMS THAT CHECK IF THE WORKBOOK HAS BEEN ALTERED OR UNPROTECTED. IN SOME CASES THE UNPROTECTED WORKBOOKS CAN GIVE FALSE RESULTS AND/OR LOSE FUNCTIONALITY. ALWAYS DOUBLE CHECK!!!
Also, if you modify an excel workbook by unprotecting it and you post it here, also post the original one and make a note about this in your post. Engineering is an exact science; mistakes can cost lives, money ans careers so we should be careful when modifying original code.
Guide to LEED 2009 Estimating and Preconstruction Strategies
Author: Thomas A. Taylor | Size: 12.7 MB | Format:PDF | Publisher: John Wiley & Sons | Year: Jan 2011 | pages: 256 | ISBN: 978-0-470-53371-0
This guide walks the reader step by step through the LEED 2009 for New Construction process, offering advanced techniques for estimating the actual costs, in time and money, for building green. It serves as an essential primer to price-assessment strategies for high-performance commercial and institutional projects, which include office buildings, high-rise residential buildings, government buildings, recreational facilities, manufacturing plants, and laboratories. Written by an author with more than twenty years of green construction experience on more than 80LEED registered or certified projects, the book provides real-world case studies used to demonstrate the techniques and concepts revealed in the book, covers project documentation, and provides strategies to help the reader understand the real costs and scheduling implications associated with sustainable building.
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This part of BS 8414 has been produced to provide a test method for assessing the fire performance of:
non-load-bearing external cladding systems
rainscreen overcladding systems
external wall insulation systems at full-scale when applied to the face of a building and exposed to an external fire under controlled conditions.
The fire exposure conditions have been developed to be representative of an external fire source or a fully-developed (post-flashover) fire in a room, venting through an opening such as a window aperture that exposes the cladding to the effects of external flames.
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BS 8414-2:2005 Fire performance of external cladding systems. Test method for non-loadbearing external cladding systems fixed to and supported by a structural steel frame
This British Standard provides a test method for assessing the behaviour of non-loadbearing external cladding systems, such as curtain walling, glazed elements, infill panels and insulated composite panels, fixed to and supported by a structural steel frame when exposed to a fully-developed (post-flashover) fire in a room, venting through an opening such as a window aperture that exposes the cladding to the effects of external flames, or from an external fire source.
This method of test does not apply to non-loadbearing external rainscreen overcladding systems or external wall insulation systems applied to the face of a building, the fire testing of which are covered in
BS 8414-1. This test does not cover exposure to radiant heat from a fire in an adjacent building.
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It's my pleasure to introduce the first manual for this wonderful place called CivilEA. Every single member of the Forum Team is meritorious and creditable for making this manual. We all put a lot of time to make this came true.
If you find any kind of mistakes, misunderstandings, faults or spelling mistakes - you are always free to contact us via PM or Profile Comments or by making post to this thread (just please, do not make posts containing only sentences like "Thanks" or "Not useful" or something similar - make whole sentences, give us your suggestions or start discussions)
There is not much to say about this Manual. There you can expect some useful hints and help on how to make good posts, how to use Post Generator, what is the meaning of the warning points and how to avoid getting warning points. Manual is going to be redesigned and improved and it will be done as soon as we find some spare time - your suggestions to 2nd Edition (that will be made) are always welcome.
This British Standard gives recommendations for the design of new
buildings and their approaches to meet the needs of disabled people.
It applies to car parking provision, setting‑down points and garaging,
access routes to and around all buildings, and entrances to and
interiors of new buildings. The recommendations also apply to routes
to facilities associated with and in the immediate vicinity of buildings.
NOTE 1 The recommendations in this British Standard mainly cover
access to buildings. The standard makes reference to egress in the event
of fire or other emergency, but the main recommendations for means of
escape are given in BS 9999.
The recommendations given in this British Standard also apply for
assessing the accessibility and usability of existing buildings and,
where practicable, as a basis for their improvement. The extent to
which the recommendations apply to listed and historic buildings is
determined on a case‑by‑case basis.
This British Standard applies to the following types of building:
transport and industrial buildings, e.g. rail, a) road, sea and air
travel buildings and associated concourses, car parking buildings
and factories;
b) administrative and commercial buildings, e.g. courts, offices,
banks, post offices, shops, department stores and shopping
centres, and public service buildings, including police stations;
c) health and welfare buildings, e.g. hospitals, health centres, dental
practices, surgeries and residential homes;
d) refreshment, entertainment and recreation buildings, e.g. cafés,
restaurants, public houses, concert halls, theatres, cinemas,
conference buildings, community buildings, swimming pools and
sports buildings;
e) religious buildings and associated facilities, e.g. church halls;
f) educational, cultural and scientific buildings, e.g. schools,
universities, colleges, zoos, museums, art galleries, libraries and
exhibition buildings;
g) residential buildings, e.g. hostels and hotels, residential clubs,
university and college halls of residence, nursing homes and
prisons, as well as the common parts of multi‑occupancy
residential buildings.
This British Standard does not apply to individual dwellings, to
residential buildings designed specifically to meet the needs of
severely disabled people, or to temporary structures.
NOTE 2 This British Standard does not give recommendations for
management and maintenance in occupied buildings, but a list of issues
to be considered is given in Annex A.
Although this British Standard is aimed specifically at the design of
buildings to meet the needs of disabled people, its recommendations
are also likely to benefit the population in general, e.g. elderly people,
people with children in pushchairs and those carrying heavy luggage.
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