Answer / fazil

As per I.S. 13920 Vertical bars of Columns shall be lapped
in regular zone (Mid-height ) only
and it should be staggered i.e. not more than 50% of bar can
be lapped at one section. In
addition to that minimum clear vertical distance between
lapped bars shall be 0.25 times lap
length.

Answer / arunachalam subiramani

In my 20 years exp vertical member lap should be 50times dia of the bar should provided

Answer / manikandan

L 3rd of column height

Answer / waseem athar

there are two types of zone in column,
1). no lap zone
2). splice zone
the lap length is provided in splice zone of column..

Answer / bilal ali khan

iN ZONE A That is in between
for example
colimn dimensionj all in mm
lenght=1000
breadth=300
height=2440
so we will take lenght 1000 and take it from bottom and take it from top of bottom
left space in between is 440mm it is zone a

Answer / waseem athar

Lap should be provided in splice zone or mid zone of column and it should be 50 times of dia of bar.

Answer / neelam saroj

In column Lap length should be provided at mid height only
as per IS.
and it should be staggered prperly it means not more 50% of
of bar can be lapped at one section.
=}in general practice wht i do,
lap length should be above the slab at some distace or
below the beam at certain distance.

Answer / guest

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