Answer Posted / subhasis1991

Its kind of length to be embeded inside some support like column or something.its calculated using IS 456 :2000
Page 42. 26.2.1

Now description of the equation is probably as follows..
let dia of a bar is = d; tensile strength = s;and shear strength is =t;and length embeded in a wall is Ld;;;;
So to keep the bar to resist from sleeping from support
upto it's tensile strength the condion would be
(Ld*(pai*d))*t=s*((pai*d^2)/4) => Ld=(d*s)/(4*t)...

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