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Question
```HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR
BENDING SCHEDULE ?```
Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 1
To calculate the lap length-48*D
For calculating hook & bend -As per Is 2502,The anchorage value of the of bend shall be taken as 4*D of the bar for each 45 Degree bend and for the U type hook its always taken as 16* D.
For the bond length(Development Length)-Ld-It is calculated by the formula. and it includes all the values of the anchorages.

 Is This Answer Correct ? 161 Yes 45 No
Arun Sangwan

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 2
hook length is 5*d lap length can been given at the end L/7
and at continuous L/4.

 Is This Answer Correct ? 89 Yes 45 No
Naveen M

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 3
whenever is laps length calclated
dia of the bar* 50 times

 Is This Answer Correct ? 112 Yes 29 No
Srinu.s

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 4
Lap length: 45 diameter of the bar (in compression member)
50 diameter of the bar (in tension member)

Bond length: 24 diameter of the bar

Hook length: 12 diameter of the bar

 Is This Answer Correct ? 34 Yes 12 No
Mohammed Aijaz Hussain.

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 5
Lap lenght:- for liquid structure- 50d
for another structure-40d
(like column, beam, slab)
For stirrups Hook:- 2x10d
for corner bend :- (-3d) upto 12dia.
(-4d)above 12dia.

 Is This Answer Correct ? 23 Yes 12 No
Lalit Kumar Singh

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 6
it dedpend upon design basics please follwing SP34 & IS2502
 Is This Answer Correct ? 8 Yes 2 No
Muthuraj S

Re: HOW TO CALCULATE LAP,BOND AND HOOK LENGTH FOR PREPARING BAR BENDING SCHEDULE ?
# 7
Lap length of bar depends on grade of concrete and design
bond. Owing to the Grade of concretes:

M15 56.4d 45.15d
M20 47d 37.6d
M25 40.3d 32.25d
M30 37.06d 30.1d

For stirrups Hook length, it will be (-)2x10d
Bend, it will be (-3d) upto 12dia.
(-4d) above 12dia.

 Is This Answer Correct ? 4 Yes 0 No
Vinod

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