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Core Purpose

The Bureau of Indian Standards notifies the establishment of new Indian Standards and the concurrent withdrawal of previous versions, as per the attached schedule.

Detailed Summary

The Bureau of Indian Standards, operating under the Department of Consumer Affairs, issued a notification on April 22, 2026 (Ref: HQ-PUB013/1/2020-PUB-BIS (1526)), in pursuance of Sub-rule (1) of Rule (15) of the Bureau of Indian Standards Rules, 2018. This notification announces the establishment of twelve revised Indian Standards, all effective from April 21, 2026. These new standards, which include IS 4997: 2026 (First Revision) for Hydraulic Jump Type Stilling Basins, IS 5878 (Part 1): 2026 (First Revision) for Construction of Tunnels, IS 8605: 2026 (First Revision) for Construction of Masonry in Dams, various parts of IS 9401: 2026 for River Valley Projects, IS 10334: 2026 for Cables in Concrete and Masonry Dams, IS 10434 (Part 2): 2026 for Deformation Measuring Devices, IS 11639 (Part 3): 2026 for Structural Design of Penstock, IS 12633: 2026 for First Filling and Emptying of Pressure Tunnels, and IS 15310: 2026 for Hydraulic Design of Pump Sumps and Intakes, replace their earlier versions. The previous standards will remain in force concurrently until their scheduled withdrawal on October 21, 2026. The notification was signed by Nishat Sultana Haque, Scientist G & DDG (Hallmarking and Training).

Full Text

REGD. No. D. L.-33004/99 The Gazette of India CG-DL-E-29042026-272148 EXTRAORDINARY PART III—Section 4 PUBLISHED BY AUTHORITY No. 295] NEW DELHI, TUESDAY, APRIL 28, 2026/VAISAKHA 8, 1948 BUREAU OF INDIAN STANDARDS (Department of Consumer Affairs) NOTIFICATION New Delhi, the 22nd April, 2026 Ref: HQ-PUB013/1/2020-PUB-BIS (1526). In pursuance of Sub-rule (1) of Rule (15) of the Bureau of Indian Standards Rules, 2018, the Bureau of Indian Standards hereby notifies that Indian standards, particulars of which are given in the second column of the schedule hereto annexed have been established on the date indicated against it in third column. The particulars of the standards, if any which are given in the fourth column shall also remain in force concurrently till they are withdrawn on the date indicated against them in the fifth column. SCHEDULE +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | SI. | No., Year & Title of the Indian | Date of | No., Year & Title of the | Date of | | No. | Standards Established | Establishment | Indian Standards to be | Withdrawal | | | | | Withdrawn, if any | | +=====+=================================================================================+=====================+====================================================================================+===================+ | (1) | (2) | (3) | (4) | (5) | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 1 | IS 4997: 2026 | 21 April 2026 | IS 4997 – 1968 | 21 October 2026 | | | Design of Hydraulic Jump Type | | Criteria for Design of Hydraulic | | | | Stilling Basins with Horizontal | | Jump Type Stilling Basins with | | | | and Sloping Apron — Criteria | | Horizontal and Sloping Apron | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 2 | IS 5878 (Part 1): 2026 | 21 April 2026 | IS 5878 (Part I) – 1971 | 21 October 2026 | | | Construction of Tunnels | | Code of Practice for | | | | Conveying Water | | Construction of Tunnels | | | | Part 1 Precision Survey and | | Part I Precision Survey and | | | | Setting Out — Code of Practice | | Setting Out | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 3 | IS 8605: 2026 | 21 April 2026 | IS 8605 – 1977 | 21 October 2026 | | | Construction of Masonry in Dams | | Code of Practice for | | | | Code of Practice | | Construction of Masonry in | | | | (First Revision) | | Dams | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 4 | IS 9401 (Part 1): 2026 | 21 April 2026 | IS 9401 (Part 1): 1999 | 21 October 2026 | | | Method of Measurement of Works | | Method of Measurement of | | | | in River Valley Projects | | Works in River Valley Projects | | | | (Dams and Appurtenant | | (Dams and Appurtenant | | | | Structures) | | Structures) | | | | Part 1 Excavation for Foundation | | Part 1 Excavation for | | | | (Second Revision) | | Foundation | | | | | | (First Revision) | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 5 | IS 9401 (Part 9) : 2026 | 21 April 2026 | IS 9401 (Part 9) – 1987 | 21 October 2026 | | | Method of Measurement of Works | | Method of Measurement of | | | | in River Valley Projects | | Works in River Valley Projects | | | | (Dams and Appurtenant | | (Dams and Appurtenant | | | | Structures) | | Structures) | | | | Part 9 Lining | | Part 9 Lining | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 6 | IS 9401 (Part 10): 2026 | 21 April 2026 | IS 9401 (Part 10): 1990 | 21 October 2026 | | | Method of Measurement of Works | | Method of Measurement of | | | | in River Valley Projects (Dams | | Works in River Valley Projects | | | | and Appurtenant Structures) | | (Dams and Appurtenant | | | | Part 10 Formwork | | Structures) | | | | (First Revision) | | Part 10 Formwork | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 7 | IS 9401 (Part 12): 2026 | 21 April 2026 | IS 9401 (Part 12): 1992 | 21 October 2026 | | | Methods of Measurement of Work | | Method of Measurement of | | | | in River Valley Projects (Dams | | Works in River Valley Projects | | | | and Appurtenant Structures) | | (Dams and Appurtenant | | | | Part 12 Topographical Surveys | | Structures) | | | | (First Revision) | | Part 12 Topographical Surveys | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 8 | IS 10334: 2026 | 21 April 2026 | IS 10334-1982 | 21 October 2026 | | | Selection, Splicing, Installation | | Code of Practice for | | | | and Providing Protection to the | | Selection, Splicing, Installation | | | | Open ends of Cables Used for | | and Providing Protection to the | | | | Connecting the Resistance Type | | Open ends of Cables Used for | | | | Measuring Devices in Concrete | | Connecting Resistance Type | | | | and Masonry Dams — Code of | | Measuring Devices in Concrete | | | | Practice | | and Masonry Dams | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 9 | IS 10434 (Part 2): 2026 | 21 April 2026 | IS 10434 (Part 2): 1996 | 21 October 2026 | | | Installation, Maintenance and | | Guidelines for Installation, | | | | Observation of Deformation | | Maintenance and Observation | | | | Measuring Devices in Concrete | | of Deformation Measuring | | | | and Masonry Dams — Guidelines | | Devices in Concrete and | | | | Part 2 Vibrating Wire Type Joint | | Masonry Dams | | | | Meter | | Part 2 Vibrating Wire Type | | | | (First Revision) | | Jointmeter | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 10 | IS 11639 (Part 3): 2026 | 21 April 2026 | IS 11639 (Part 3): 1996 | 21 October 2026 | | | Criteria for Structural Design of | | Structural Design of Penstock | | | | Penstock — Guidelines | | Criteria | | | | Part 3 Specials for Penstocks | | Part 3 Specials for Penstocks | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 11 | IS 12633: 2026 | 21 April 2026 | IS 12633: 1989 | 21 October 2026 | | | First Filling and Emptying of | | First Filling and Emptying of | | | | Pressure Tunnels — Guidelines | | Pressure Tunnels — Guidelines | | | | (First Revision) | | | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ | 12 | IS 15310: 2026 | 21 April 2026 | IS 15310: 2003 | 21 October 2026 | | | Hydraulic Design of Pump Sumps | | Hydraulic Design of Pump | | | | and Intakes — Guidelines | | Sumps and Intakes — | | | | (First Revision) | | Guidelines | | +-----+---------------------------------------------------------------------------------+---------------------+------------------------------------------------------------------------------------+-------------------+ NISHAT SULTANA HAQUE, Scientist G & DDG (Hallmarking and Training) [ADVT.-III/4/Exty./64/2026-27] Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064 and Published by the Controller of Publications, Delhi-110054. Digitally signed by KUMER KUMER CHAND CHAND MEENA MEENA Date: 2026.04.29 13:03:49 +05:30

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