Answer Posted / anup sharma
Old roof nd new roof are joined using hilty.
Hilty is the process in which a hole is made in the older
roof by drilling and hilty chemical is inserted inside the
holes and finally new reinforcement is inserted inside these
holes such that the older and the newer reinforcement stay
connected. after that form work is done and the new roof is
casted.
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16 questions out of 55 were from the book GUPTA N GUPTA OBJECTIVE of civil engineering. Total ques were 4 ques from hydraullics, 7 from BMC, 4 FROM SOM, 4 from soil mechanics, 6 from transportation, 5 from engineering drawing.
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