Send the following on WhatsApp
Continue to ChatIS 2250-1981 https://civilengineer.co.in/indian-standard-codes/is-2250-1981-preparation-and-use-of-masonry-mortar/attachment/2250/
IS 2250-1981 https://civilengineer.co.in/indian-standard-codes/is-2250-1981-preparation-and-use-of-masonry-mortar/attachment/2250/