Posted by IS 2950 – 1987 is an Indian Code of Practice for the design and construction of raft foundations.
You can download IS 2590 – 1987 here
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Download National Building Code 2016 – Volume 1 & Volume 2 [PDF]
Building Construction by IGNOU (PDF)
Building Materials EBook pdf by IGNOU(pdf)
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Types of Foundations for Building Construction and Their Applications