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Continue to ChatIS 2950(PART 1)-1981 INDIAN STANDARD CODE OF PRACTICE FOR DESIGN AND CONSTRUCTION OF RAFT FOUNDATIONS-PART 1 DESIGN. https://civilengineer.co.in/indian-standard-codes/is-2950part-1-1981-indian-standard-code-of-practice-for-design-and-construction-of-raft-foundations-part-1-design/