IS 875 (Part 1 2 3) PDF Download: A Guide for Design Loads for Buildings and Structures
If you are involved in the design, construction, or maintenance of buildings and structures in India, you need to be familiar with IS 875, the Indian Standard code of practice for design loads. This code provides guidelines and specifications for various types of loads that affect the stability, safety, and performance of buildings and structures. In this article, we will explain what IS 875 is, what are its different parts, and how you can download IS 875 (Part 1 2 3) PDF files from the Internet Archive.
is 875 ( part 1 2 3 pdf download)
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Introduction
IS 875 is a code of practice that specifies the minimum design loads to be considered for buildings and structures in India. It covers loads other than earthquake, such as dead loads, imposed loads, wind loads, snow loads, and special loads. It also provides methods for calculating these loads, as well as design considerations and recommendations.
IS 875 is divided into five parts, each dealing with a specific type of load. These parts are:
IS 875 (Part 1): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 1: Dead Loads--Unit Weights of Building Materials and Stored Materials (Second Revision)
IS 875 (Part 2): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 2: Imposed Loads (Second Revision)
IS 875 (Part 3): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 3: Wind Loads (Second Revision)
IS 875 (Part 4): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 4: Snow Loads
IS 875 (Part 5): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 5: Special Loads and Load Combinations
Earthquake load is covered in a separate standard, namely IS :1893-1984*, which should be considered along with the above loads.
You can download IS 875 (Part 1 2 3) PDF files from the Internet Archive, a non-profit library that offers free access to millions of books, documents, audio, video, and software. The Internet Archive has scanned and uploaded the original copies of IS 875 from the Bureau of Indian Standards (BIS), which is the national standards body of India. To download IS 875 (Part 1 2 3) PDF files, you can follow these steps:
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Go to the Internet Archive website at
In the search box, type "IS 875" and click the search icon or press enter.
You will see a list of results that match your query. Look for the titles that start with "IS 875 (Part 1)", "IS 875 (Part 2)", and "IS 875 (Part 3)" respectively.
Click on the title that you want to download. You will be taken to a page that shows the details of the document, such as the author, publisher, date, language, etc.
On the right side of the page, you will see a section called "Download Options". Here, you can choose the format that you prefer, such as PDF, EPUB, Kindle, etc.
Click on the format that you want and the download will start automatically. You can also right-click on the format and choose "Save link as" to save the file to your desired location.
Alternatively, you can use the direct links below to download IS 875 (Part 1 2 3) PDF files:
Now that you know how to download IS 875 (Part 1 2 3) PDF files, let's take a closer look at each part and what they cover.
IS 875 (Part 1): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 1: Dead Loads--Unit Weights of Building Materials and Stored Materials (Second Revision)
Dead loads are the loads due to the self-weight of the building or structure and any permanent fixtures attached to it. They are constant and do not change with time or occupancy. They are also known as permanent loads or static loads.
Dead loads are important to consider because they affect the stability, strength, and deflection of the building or structure. They also influence the design of the foundation, columns, beams, slabs, walls, and other structural elements.
IS 875 (Part 1) provides the unit weights of various building materials and stored materials in tables. The unit weight is the weight per unit volume of a material. It is expressed in kilonewtons per cubic meter (kN/m) or kilograms per cubic meter (kg/m). The unit weight of a material depends on its density, moisture content, compaction, and other factors.
The tables in IS 875 (Part 1) cover common building materials such as concrete, brick, stone, steel, wood, glass, etc., as well as stored materials such as coal, grain, sand, water, etc. The tables also provide some guidance on how to estimate the unit weight of composite materials and irregular shapes.
Some of the design considerations and recommendations for dead loads are:
The dead load of a building or structure should be calculated based on the actual dimensions and weights of the materials used.
The dead load should include the weight of all permanent fixtures such as partitions, doors, windows, plumbing, electrical wiring, etc.
The dead load should also include the weight of any future additions or alterations that are anticipated or permitted by the design specifications.
The dead load should be applied uniformly over the area or length of the structural element under consideration.
The dead load should be considered as acting vertically downward unless otherwise specified.
IS 875 (Part 2): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 2: Imposed Loads (Second Revision)
Imposed loads are the loads due to the intended use and occupancy of the building or structure. They include the weight of people, furniture, equipment, vehicles, goods, etc., as well as any dynamic effects caused by their movement or vibration. They are also known as live loads or variable loads.
Imposed loads are important to consider because they affect the serviceability, durability, and safety of the building or structure. They also influence the design of the structural elements and their connections.
IS 875 (Part 2) provides the minimum imposed loads to be considered for different types of buildings and structures in tables. The imposed loads are classified into four categories, namely:
Category A: Residential buildings, educational buildings, institutional buildings, assembly buildings, etc.
Category B: Office buildings, commercial buildings, industrial buildings, storage buildings, etc.
Category C: Roofs with access for maintenance and repair only.
Category D: Roofs with access for public assembly or other special purposes.
The tables in IS 875 (Part 2) give the minimum imposed loads per unit area or per unit length for different types of floors, roofs, stairs, balconies, etc., depending on the category of the building or structure. The tables also provide some guidance on how to account for the effects of concentrated loads, impact loads, vibration loads, etc.
Some of the design considerations and recommendations for imposed loads are:
The imposed load of a building or structure should be calculated based on the intended use and occupancy of the space under consideration.
The imposed load should include the weight of all movable objects such as furniture, equipment, vehicles, goods, etc., as well as any dynamic effects caused by their movement or vibration.
The imposed load should also include the weight of any temporary loads such as scaffolding, construction materials, workers, etc., that may be present during construction or maintenance.
The imposed load should be applied in the most unfavorable position and direction for the structural element under consideration.
The imposed load should be considered as acting either vertically downward or horizontally unless otherwise specified.
IS 875 (Part 3): Code of Practice for Design Loads (Other Than Earthquake) For Buildings and Structures. Part 3: Wind Loads (Second Revision)
Wind loads are the loads due to the action of wind on the building or structure. They include the pressure exerted by the wind on the surface of the building or structure, as well as the force induced by the wind on the mass of the building or structure. They are also known as aerodynamic loads or dynamic loads.
Wind loads are important to consider because they affect the stability, strength, and deflection of the building or structure. They also influence the design of the cladding, roofing, openings, and other non-structural elements.
IS 875 (Part 3) provides the methods for determining the wind loads on buildings and structures in India. It covers the following aspects:
The basic wind speed for different regions of India based on meteorological data and terrain features.
The wind pressure coefficients for different shapes and orientations of buildings and structures based on wind tunnel tests and empirical formulas.
The wind force coefficients for different types of structural systems and elements based on dynamic analysis and experimental data.
The wind load coefficients for different types of cladding, roofing, openings, and other non-structural elements based on pressure distribution and load transfer.
Some of the design considerations and recommendations for wind loads are:
The wind load of a building or structure should be calculated based on the basic wind speed, wind pressure coefficient, wind force coefficient, and wind load coefficient applicable to the location, shape, orientation, system, and element under consideration.
The wind load should include both the external pressure exerted by the wind on the surface of the building or structure and the internal pressure induced by the wind inside the building or structure.
The wind load should also include any dynamic effects caused by the resonance or vibration of the building or structure due to the fluctuating nature of the wind.
The wind load should be applied in any horizontal direction that produces the maximum effect on the structural element under consideration.
The wind load should be considered as acting either along with or against other loads such as dead loads, imposed loads, earthquake loads, etc., depending on their relative magnitudes and directions.
Conclusion
In this article, we have explained what IS 875 is, what are its different parts, and how you can download IS 875 (Part 1 2 3) PDF files from the Internet Archive. We have also discussed the main features and contents of each part, namely IS 875 (Part 1) for dead loads, IS 875 (Part 2) for imposed loads, and IS 875 (Part 3) for wind loads. We have also provided some design considerations and recommendations for each type of load.
IS 875 is a vital code of practice for design loads for buildings and structures in India. It helps to ensure the stability, safety, and performance of buildings and structures under various loading conditions. It also helps to optimize the use of materials, resources, and energy in the construction industry.
If you want to learn more about IS 875 and its applications, you can refer to the following resources:
The Bureau of Indian Standards (BIS) website at , where you can find the latest versions, amendments, and interpretations of IS 875 and other Indian Standards.
The National Building Code of India (NBC) 2016, which is a comprehensive document that covers all aspects of building design, construction, and maintenance in India. It incorporates IS 875 and other Indian Standards as well as international best practices.
The Indian Institute of Technology (IIT) Madras website at , where you can find online courses, lectures, videos, and publications on structural engineering and design loads by eminent professors and experts.
FAQs
Here are some frequently asked questions and answers related to IS 875:
What is the difference between IS 875 and IS 1893?
IS 875 is the code of practice for design loads (other than earthquake) for buildings and structures in India. It covers dead loads, imposed loads, wind loads, snow loads, and special loads. IS 1893 is the code of practice for earthquake resistant design of structures in India. It covers seismic loads, seismic zones, soil types, response spectra, ductility, etc.
How to convert kN/m to kg/m?
kN/m and kg/m are both units of unit weight or density. To convert kN/m to kg/m, you need to multiply by 1000. For example, if the unit weight of concrete is 25 kN/m, then it is equivalent to 25000 kg/m.
How to calculate wind load on a building?
To calculate wind load on a building, you need to follow the steps given in IS 875 (Part 3). You need to know the basic wind speed for the region where the building is located, the wind pressure coefficient for the shape and orientation of the building, the wind force coefficient for the type of structural system and element, and the wind load coefficient for the type of cladding, roofing, opening, etc. You then need to apply the wind load in the most unfavorable direction and combination with other loads.
What are special loads and load combinations?
Special loads are loads that are not covered by the other parts of IS 875. They include loads due to temperature changes, settlement, shrinkage, creep, prestress, etc. Load combinations are combinations of different types of loads that act simultaneously or sequentially on a building or structure. They include combinations of dead load, imposed load, wind load, earthquake load, snow load, special load, etc.
Where can I find IS 875 (Part 4) and IS 875 (Part 5) PDF files?
You can find IS 875 (Part 4) and IS 875 (Part 5) PDF files on the Internet Archive website as well. Just follow the same steps as mentioned above for IS 875 (Part 1 2 3) PDF files. Alternatively, you can use these direct links:
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