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Continue to ChatIS:9377 - 1979 (Reaffirmed 1999) https://civilengineer.co.in/indian-standard-codes/download-is-code-for-apparatus-impact-value-is9377-1979/attachment/9377/
IS:9377 - 1979 (Reaffirmed 1999) https://civilengineer.co.in/indian-standard-codes/download-is-code-for-apparatus-impact-value-is9377-1979/attachment/9377/