Crank is a slight bending in bars at the lap so that maintains the clear cover even at the lap position. The rule that is generally practiced is that the slope of crank 1:10 & minimum length of crank 300 mm.
Crank length of reinforcement
Crank length of reinforcement
Formula of Crank length = (d1+d2+5)*10mm

 

 

d1 =diameter of smaller bar                d2
= diameter of largest bar

Comments

comments