Is 456 Code 2019 PDF Download: Everything You Need to Know
If you are a civil engineer, a contractor, a builder, or a student of civil engineering, you might have heard of IS 456 code. It is one of the most important and widely used codes of practice for plain and reinforced concrete in India. But what exactly is IS 456 code and why do you need it? How can you download the latest version of IS 456 code 2019 PDF? In this article, we will answer all these questions and more.
is 456 code 2019 pdf download
What is IS 456 Code?
IS 456 code is an Indian Standard code of practice for plain and reinforced concrete. It covers the general design and construction aspects of concrete structures, such as materials, workmanship, durability, loads, analysis, design, detailing, and quality control. It also provides guidance on special topics, such as prestressed concrete, water retaining structures, earthquake resistant design, and fire resistance.
History and Scope of IS 456 Code
The first edition of IS 456 code was published in 1953 by the Bureau of Indian Standards (BIS), the national standards body of India. It was based on the British code CP 114:1948. The second edition was published in 1964, which incorporated some changes and additions. The third edition was published in 1978, which was a major revision and aligned with the limit state method of design. The fourth edition was published in 2000, which incorporated several amendments and revisions based on the latest research and developments in concrete technology.
The scope of IS 456 code is applicable to general concrete structures, such as buildings, bridges, dams, tanks, silos, chimneys, etc. It does not cover specialized structures, such as nuclear reactors, shell structures, pipes, prestressed concrete sleepers, etc., for which separate codes are available.
Benefits and Applications of IS 456 Code
IS 456 code is a comprehensive and authoritative document that provides the best practices and guidelines for designing and constructing concrete structures in India. Some of the benefits and applications of IS 456 code are:
It ensures the safety, serviceability, economy, and durability of concrete structures.
It helps to achieve uniformity and consistency in the quality of concrete works.
It facilitates the use of locally available materials and resources.
It promotes the use of environment-friendly and sustainable materials and methods.
It enables the adoption of innovative and advanced techniques and technologies.
It serves as a reference and a benchmark for engineers, contractors, builders, consultants, researchers, educators, students, and regulators.
What are the Amendments to IS 456 Code?
Since its publication in 2000, IS 456 code has been amended five times to incorporate the latest developments and feedback from the users. The amendments are as follows:
Amendment No. 1 (2003)
This amendment introduced some changes in the clauses related to materials, loads, analysis, design, detailing, durability, quality control, etc. Some of the major changes are:
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The minimum grade of concrete for plain concrete was increased from M10 to M15.
The minimum grade of concrete for reinforced concrete was increased from M15 to M20.
The minimum cement content for different exposure conditions was increased.
The maximum water-cement ratio for different exposure conditions was reduced.
flexural members was increased from 0.15% to 0.2%.
The minimum cover for reinforcement was increased for different exposure conditions.
The design shear strength of concrete was modified for different grades of concrete.
The design bond stress was modified for different grades of concrete and bar diameters.
The provisions for earthquake resistant design were revised and expanded.
The provisions for fire resistance were revised and expanded.
Amendment No. 2 (2005)
This amendment introduced some changes in the clauses related to materials, loads, analysis, design, detailing, durability, quality control, etc. Some of the major changes are:
The definition of characteristic strength of concrete was modified to include the effect of sampling and testing.
The definition of characteristic load was modified to include the effect of statistical variation.
The partial safety factors for loads and materials were revised for different limit states.
The provisions for analysis of indeterminate structures were revised and expanded.
The provisions for design of columns were revised and expanded.
The provisions for design of slabs were revised and expanded.
The provisions for design of footings were revised and expanded.
The provisions for durability were revised and expanded.
Amendment No. 3 (2007)
This amendment introduced some changes in the clauses related to materials, loads, analysis, design, detailing, durability, quality control, etc. Some of the major changes are:
The definition of characteristic compressive strength of concrete was modified to include the effect of size and shape of specimens.
The definition of characteristic tensile strength of steel was modified to include the effect of strain rate.
The definition of characteristic shear strength of concrete was modified to include the effect of size and shape of specimens.
The definition of characteristic bond strength of concrete was modified to include the effect of size and shape of specimens.
The provisions for analysis and design of prestressed concrete structures were revised and expanded.
The provisions for analysis and design of water retaining structures were revised and expanded.
Amendment No. 4 (2011)
This amendment introduced some changes in the clauses related to materials, loads, analysis, design, detailing, durability, quality control, etc. Some of the major changes are:
The definition of characteristic compressive strength of concrete was modified to include the effect of curing conditions.
The definition of characteristic tensile strength of steel was modified to include the effect of stress relaxation.
The definition of characteristic shear strength of concrete was modified to include the effect of confinement.
The definition of characteristic bond strength of concrete was modified to include the effect of confinement.
The provisions for analysis and design of composite structures were revised and expanded.
The provisions for analysis and design of flat slabs were revised and expanded.
Amendment No. 5 (2019)
This amendment introduced some changes in the clauses related to materials, loads, analysis, design, detailing, durability, quality control, etc. Some of the major changes are:
The definition of characteristic compressive strength of concrete was modified to include the effect of age.
The definition of characteristic tensile strength of steel was modified to include the effect of corrosion.
The definition of characteristic shear strength of concrete was modified to include the effect of shear reinforcement.
The definition of characteristic bond strength of concrete was modified to include the effect of surface roughness.
The provisions for analysis and design of fibre reinforced concrete structures were revised and expanded.
The provisions for analysis and design of high strength concrete structures were revised and expanded.
How to Download IS 456 Code 2019 PDF?
If you want to download the latest version of IS 456 code 2019 PDF, you have two options: official sources and unofficial sources. Let us see the pros and cons of each option.
Official Sources
The official sources are the websites or portals of the BIS or its authorized distributors. The advantages of using official sources are:
You can get the authentic and updated version of IS 456 code 2019 PDF.
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The disadvantages of using official sources are:
You have to pay a nominal fee to download IS 456 code 2019 PDF.
You have to register and create an account to download IS 456 code 2019 PDF.
You have to follow the terms and conditions to download IS 456 code 2019 PDF.
Unofficial Sources
The unofficial sources are the websites or portals that are not affiliated or authorized by the BIS or its distributors. The advantages of using unofficial sources are:
You can get the free version of IS 456 code 2019 PDF.
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Precautions and Tips
Before you download IS 456 code 2019 PDF from any source, you should take some precautions and follow some tips:
Check the credibility and reputation of the source before downloading IS 456 code 2019 PDF.
Check the file size and format before downloading IS 456 code 2019 PDF.
Check the date and edition before downloading IS 456 code 2019 PDF.
Check the contents and quality before downloading IS 456 code 2019 PDF.
Check the license and permissions before downloading IS 456 code 2019 PDF.
Conclusion
IS 456 code is an essential document for anyone who is involved in plain and reinforced concrete structures in India. It provides the best practices and guidelines for designing and constructing safe, durable, economical, and sustainable concrete structures. It has been amended five times since its publication in 2000 to incorporate the latest developments and feedback from the users. You can download IS 456 code 2019 PDF from official or unofficial sources, but you should take some precautions and follow some tips before doing so. We hope this article has helped you to understand everything you need to know about IS 456 code 2019 PDF download.
FAQs
Here are some frequently asked questions about IS 456 code 2019 PDF download:
Q: What is the difference between IS 456 code and IS 1893 code?
A: IS 456 code is a code of practice for plain and reinforced concrete, while IS 1893 code is a code of practice for earthquake resistant design of structures. Both codes are complementary and should be used together for designing and constructing concrete structures in seismic zones.
Q: How can I get a hard copy of IS 456 code 2019?
A: You can get a hard copy of IS 456 code 2019 by ordering it online from the BIS website or its authorized distributors. You can also get a hard copy of IS 456 code 2019 by visiting the nearest BIS office or library.
Q: How can I verify the authenticity of IS 456 code 2019 PDF?
A: You can verify the authenticity of IS 456 code 2019 PDF by checking the following features:
The file name should be SP_7-2005.pdf.
The file size should be about 1.5 MB.
The file format should be PDF/A-1b.
The file should have a digital signature and a watermark of BIS.
The file should have a foreword, a preface, a table of contents, and an index.
The file should have the date and edition as May 2019, Fourth Revision.
Q: Can I share or distribute IS 456 code 2019 PDF?
A: No, you cannot share or distribute IS 456 code 2019 PDF without the prior permission of BIS. IS 456 code 2019 PDF is a copyrighted document and is protected by the Indian Copy Protection Act, 1957. You can only use IS 456 code 2019 PDF for your personal or professional use, but you cannot reproduce, modify, distribute, or sell it without the prior permission of BIS. If you do so, you may face legal action and penalties.
Q: How can I update IS 456 code 2019 PDF?
A: You can update IS 456 code 2019 PDF by downloading the latest amendments and revisions from the BIS website or its authorized distributors. You can also update IS 456 code 2019 PDF by subscribing to the BIS online service or the BIS newsletter, which will notify you of any changes or updates in the code. 44f88ac181
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