Answer Posted / alehegn yehuala

Basically the development length is the length which should
be such that the stress should develop on both sides of the
point of maximum stress in the steel bar. If this point is
in the mid span of the beam then it can develop on both
sides but if the maximum stress is at the end (like in
cantilever) then we need to provide extra length beyond the
end support center line. If this extra anchoring length is
straight which is not beyond the nominal cover of the end
support then its same as development length and if this
extra anchoring is beyond the nominal cover of the end
support, then it is not straight bar i.e. with hooks then it
is called as anchorage length which is used to provide full
development length & an additional length for stability of
the structure.Therefore it is the anchorage length must
provide to detail any structure which have the same
situation as described in the above rather than development
length.

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