Answer / bhupesh sheth

generally taken 50 times dia of bar

Example
1) For 8mm = 50 X 8 = 400mm

2) For 10mm dia =50 X 10 = 500mm

3) For 12mm dia = 12 X 12 = 600mm

Answer / ravi chandra

Yes  general taken by 40d or 50 d

Ex.  50x all dia

       40 X all dia

Answer / tapas kr. das

the theory is....
50D
where D = Dia. of BAR

Answer / desigan

mostly 48d or 50d is safer.....but it varies from grade of concrete and economical also seen.....

Answer / setti durgababu

its mainly depends up on type of loading subjected to particular member that is tension or compression
as a commonsense for tension more laplength is req than compression

Answer / ghantola

48d in tension and 40 d in compression. lap length varies as per grade of concrete and steel

Answer / karthik

40 xdia.....for all

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