IS 875 (Part 4) : 1981 | Download Civil Engineeing Code

CODE OF PRACTICE FOR DESIGN LOADS 
(OTHER THAN EARTHQUAKE)

FOR BUILDINGS AND STRUCTURES

PART 5 SPECIAL LOADS AND COMBINATIONS

About: IS 875 (Part 4) : 1981

This Indian Standard (Part4) (Second Revision) was adopted by the Bureau of Indian Standards on 9 November 1987 after the draft finalized by the Structural Safety Sectional Committee had been approved by the Civil Engineering Division Council.

A building has to perform many functions satisfactorily. Amongst these functions are the utility of the building for the intended use and occupancy. Structural safety: fire safety and compliance with hygienic, sanitation, ventilation and day light standards. The design of the building is dependent upon the minimum requirements prescribed for each of the above functions. 

The minimum requirements pertaining to the structural safety of buildings are being covered in this Code by way of laying down minimum design loads which have to be assumed for dead loads, imposed loads, wind loads, snow loads and other external loads, the structure would be required to bear. 

Strict conformity to loading standards recommended in this Code, it is hoped, will not only ensure the structural safety of the buildings which are being designed and constructed in the country and thereby reduce the hazards to life and property caused by unsafe structures, but also eliminate the wastage caused by assuming unnecessarily heavy loadings. 

Not withstanding what is stated regarding the structural safety of buildings, the application of the provisions should be carried out by competent and responsible structural designer who would satisfy himself that the structure designed in accordance with this code meets the desired performance requirements when the same is carried out according to specifications.

This Code was first published in 1957 for the guidance of civil engineers, designers and architects associated with the planning and design of buildings. It included the provisions for the basic design loads (dead loads, live loads, wind loads and seismic loads) to be assumed in the design of buildings. In its first revision in 1964.the wind pressure provisions were modified on the basis of studies of wind phenomenon and its effects on structures undertaken by the special committee in consultation with the Indian Meteorological Department. 

In addition to this, new clauses on wind loads for butterfly type structures were included; wind pressure coefficients for sheeted roofs, both curved and sloping, were modified; seismic load provisions were deleted (separate code having been prepared) and metric system of weights and measurements was adopted.

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