Diameter of mandrel for reinforcement to bend it in L shaped and c shaped hooks
Diameter of mandrel for providing L shape - bend and c shape - hook d is the dia of bar As per IS 2502 1963 For upto 25 mm dia bars - 8d Above than 25 mm dia bars - 12d As per BS 8666 2005 For upto 16 mm dia bars - 4d Above than 16 mm dia bars - 7d