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In colomn reinforcement when dia of bar is going to change,
than what should be the lap length of bars weather it should
be of heigher dia bar lap length or it should the accordance
with new dia bar. the grade of concrete is same.
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Answer / sjtbehera
when we are going to change from higher dia to lower dia,
the lap lenghth of lower dia is consider, but when from
lower dia to higher dia lap legth should be consider higher
dia.
| Is This Answer Correct ? | 14 Yes | 4 No |
Answer / deepak gosain
It should be lap of newer bar which has to be lapped as diaX55
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / faisal chaudhry
Normally the lap length formula is mentioned by designer
and it varies from 40d-60d.
Normally in "columns" we have to calculate the lap splice
length corresponding to smaller of the two bars that are
splicing, whereas in piles (that are either skin friction
or combination of skin friction and end bearing) this will
be reversed and we will have to use the bigger dia bar to
calculate the lap splice lenght.
The logic is very simple if you understand the basic
concept of lap splice lenght. You have to consider whether
its the smaller dia bar transferring stresses to bigger dia
or vice versa. lap splice length is always corresponding to
the dia of the bar which is transferring the stresses.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / md.ifthekar pasha
ok as some are saying that it could be 50D or 47D.....but it is purely depends upon the structural design condition
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / ptcool
here in this case the lap length will be 50 times the dia
of the larger bar in the reinforcement...
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / ankit hooda
Lap lenth varies for grade of concrete... High grades require smaller lap length... Generally in columns as u go up... Diameter of bar reduces... Load is transferred from above to below... So lap length is as per smaller bar which is transferring load... For m30 grade we r taking it as 40 d only... And obviously it will be same grade at lap because laps comes in area between the floors... Grade cannot vary at lap splice
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / punit jain
The lap length also depends on the grade of steel used, if ur using fe500 then its 57d...For fe415 its 50d
| Is This Answer Correct ? | 0 Yes | 0 No |
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