Answer / hassan bin mohsin

IT is 50d is for lapping lengthof bar , where d is diameter of rainforement bar
Not less then 45d lapping length

Answer / ramesh kumar

As per the revised IS , use commonly 37D as lap
length....50D was used before...now most of the designers
following this only...

Answer / gopalakrishnan

column 75d to 50d
beam 50d
paving and flooring 40d and 50d
tank foundation max 75d

Answer / raju gohel

in compression -45d
in tention -50d

Answer / yamir betancourt

Development lengths for deformed bars in tension are
mandated by section 12.2 of the ACI code. Factors
affdecting development length are size of bar, yied stress
of bar, 28 day compressive strength of concrete, amount of
concrete cover and wether or not the bar splice is class A
or class B splice which is covered in section 12.15 of the
ACI code.

Answer / manirajk

reinforcement use 50d d-no of rods

Answer / oliver kipkoech

52d where d is diameter of rebar

Answer / ppl

This answer is dependent on the diameter of the bar, the
strength of the concrete, the use (type of construction),
the code you're using, and the standards in the location you
wish to build it. Find the code you need for your area and
type of construction, make sure there aren't any superseding
local standards, and then look up all the rules. Many codes
(like the international building code) have half a dozen or
more.

Answer / mohsin raza gardezi

Generally it is 45 d d dia of bar
50 d d dia of bar

Answer / aman kumar gupta

it shouldnot be less than the maximum size of aggregate or the diameter of the bar also it should not exceed 3d or 300 for main reinforcement or 5d or 450 for distribution reinforcement.

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