Send the following on WhatsApp
Continue to ChatIS-2720-(PART 40)-1977 INDIAN STANDARD METHODS OF TEST FOR SOILS DETERMINATION OF TRUE SWELL INDEX OF SOILS https://civilengineer.co.in/indian-standard-codes/is-2720-part-40-1977-indian-standard-methods-of-test-for-soils-determination-of-true-swell-index-of-soils/