From the concrete used for the pipes the manufacturer

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Unformatted text preview: MARKING by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the producer. Standard marked products are also continuously checked by BIS for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. sampling. 22 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Acf, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course 01 implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publication), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Handbook’ and ‘Standards Monthly Additions’. Amendments Issued Since Puhlic~tion Text Affected Date of Issue Amend No. BUREAU OF INDIAN STANDARDS Headquarters: Telegrams: Manaksanstha (Common to all offices) Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 Telephones: 323 0131,323 33 75,323 94 02 Telephone Regional Offices: .Central 323 76 17,323 38 41 : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI 110002 Eastern { 337 84 99,337 85 61 86 9120 26,337 : l/14 C.I.T. Scheme VII M, V.I.P. Road, Maniktola CALCUTTA 700054 Northern : SC0 335-336, Sector 34-A, CHANDIGARH 160022 1 60 38 43 20 25 Southern : C.I.T. Campus, IV Cross Road, C!IENNAI 600113 { 235 02 16,235 04 42 15 19,23523 15 Western { 832 78 95,832 78 92 92 58 91,832 : Manakalaya, E9 MIDC, Marol, Andheri (East) MUMBAI 400093 Branches : AHMADABAD. BANGALORE. BHGPAL. .BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAISUR. KANPUR. LUCKNOW. NAGPUR. PATNA. PUNE. THIRUVANANTHAPURAM. ginted at Simco Printing Press, Delhi, India AMENDMENT NO. 1 JANUARY 1991 TO IS 458 : 1988 SPECIFICATION FOR PRECAST CONCRETE...
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