IS 3370 PART-1 1965 CODE OF PRACTICE FOR CONCRETE STRUCTURES FOR THE STORAGE OF LIQUIDS

IS 3370 PART-1 1965 CODE OF PRACTICE FOR CONCRETE STRUCTURES FOR THE STORAGE OF LIQUIDS

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0.1 This Indian Standard ( Part I) was adopted by the Indian Standards Institution on 19 November 1965, after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Civil Engineering Division Council.
0.2 The need for a code covering the design and construction of reinforced concrete and prestressed concrete structures for the storage of liquids has been long felt in this country. So far, such structures have been designed to varying standards adapted from the recommendations of the Institution
of Civil Engineers and of the Portland Cement Association with ‘the result that the resultant structures cannot be guaranteed to possess a uniform safety margin and dependability. Moreover, the design and construction methods in reinforced concrete and prestressed concrete are influenced by
the prevailing construction practices, the physical properties of the materials and the climatic conditions. The need was, therefore, felt to lay down uniform requirements of structures for the storage of liquids giving due consideration to these factors. In order to fulfil this need, formulation
of this Indian Standard code of practice for concrete structures for the storage of liquids [ IS : 3370-1965 J was undertaken. This part deals with general requirements. Three other parts of the code are the following:
Part II Reinforced concrete structures
Part III Prestressed concrete structures
Part IV Design tables
0.3 Although the provisions of this code cover mainly structures for the storage of liquids the general provisions of this code may also be applied with such modifications as found necessary, to suit the special conditions in the design of reinforced concrete and prestressed concrete structures for
the conveyance of liquids, such as aqueducts and superpassages.
0.4 While the common methods of design and construction have-been covered in this code, design of structures of special forms or in unusual circumstances should be left to the judgement of the engineer and in such 3 IS 337O (PartI)-1965 cases special systems of design and construction may be permitted on production of satisfactory evidence regarding their adequacy and safety by analysis or test or by both.
0.5 In this standard it has been assumed that the design of liquid retaining structures, whether of plain, reinforced or prestressed concrete is entrusted to a qualified engineer and that the execution of the work is carried out under the direction of an experienced supervisor.
0.6 All requirements of IS : 456-1964* and IS : 1343-1960, in so far as they .apply, shall be deemed to form part of this code except where otherwise laid down in this code.
0.7 The figures 1 to 7 given in this code are only diagramatic and are intended merely to illustrate the definitions and principles given in the code and need not be treated as preferred designs.
0.8, The Sectional Committee responsible for the preparation of this standard has taken into consideration the views of engineers and technologists and has related the standard to the practices followed in the country in this field. Due weightage has also been given to the need for international
co-ordination between the standards prevailing in different countries of the world. These considerations led the Sectional Committee to derive assistance from published materials of the following organizations:
British Standards Institution,
Portland Cement Association, Chicago, USA, and
Institution of Civil Engineers, London.
0.9 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed.,or cal+.dated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960$. The number of significant places retained in the
rounded off value should be the same as that of the specified value in this standard.

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