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IS Number | |||
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IS 875 : Part 3 : 1987 |
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Title :-Code of Practice for Design Loads (Other than Earthquake) for Buildings and Structures - Part 3 : Wind Loads (Second Revision) | |||
Unit Price |
Status |
Amendment |
Reaffirmed |
Gr 14 |
Active |
2 |
2003 |
Page Size |
No. of Pages |
Tech. Committee |
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A4 |
58 |
CED 37 |
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UDC 624.042.41 | |||
1 Scope
1.1 This standard gives wind forces and their effects (static and dynamic) that should be taken into account when designing buildings, structures and components thereof.
1.1.1 It is believed that ultimately wind load estimation will be made by taking into account the random variation of wind speed with time but available theoretical methods have not matured sufficiently at present for use in the code. For this reason, static wind method of load estimation which implies a steady wind speed, which has proved to be satisfactory for normal, short and heavy structures, is given in 5 and 6. However, a beginning has been made to take account of the random nature of the wind speed by requiring that the along-wind or drag load on structures which are prone to wind induced oscillations, be also determined by the gust factor method and the more severe of the two estimates be taken for design.
2 References
IS 2 : 1960 Rules for rounding off numerical values
IS 1893 : 1984 Criteria for earthquake resistant design of structures