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Sankar Mahato Asked a Question
December 10, 2021 7:35 pmpts 30 pts
44. For a dam site investigation, drilling was carried out up toa depth of 35m. the total length of recovered pieces (over 10cm) adds up to 21m. The ROD of the foundation stone i 7o.
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  • Saurabh 1 thankyou
    Rock Quality Designation (RQD) can be given as = RQD(in percentage)= (Total length of recovered pieces/Drilling depth)×100 RQD= (21/35)×100= 0.6×100= 60% So RQD=60% is the answe...
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