Hook allowance shall be taken
as, 9d, 11d, 13d, and 17d for K values 2,3,4 and 6 respectively and rounded off
to the nearest 5mm, but not less than 75mm. For 90-degree bend allowance shall
be taken as 5d, 5.5d, 6d and 7d for K values 2,3,4 and 6 respectively and
rounded off to the nearest 5mm, but not less than 75mm.
|
HOOK
ALLOWANCE
|
90
DEGREE BEND ALLOWANCE
|
|||||||||||
|
Nominal
size of Bar
|
Mild
Steel IS:432-1960
|
Medium
Tensile Steel
IS:432-1960
|
Cold
Worked Steel Bars
IS:1786-1961
|
Mild
Steel
|
Medium
Tensile Steel
|
Cold
Worked Steel Bars
|
||||||
|
|
Min
mm
|
Reco.
mm
|
Min
mm
|
Reco.
mm
|
Min
mm
|
Reco.
mm
|
Min
mm
|
Reco.
mm
|
Min
mm
|
Reco.
mm
|
Min
mm
|
Reco.
mm
|
|
5
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
|
6
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
|
8
|
75
|
-
|
90
|
-
|
105
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
|
10
|
90
|
-
|
110
|
-
|
130
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
|
12
|
110
|
-
|
130
|
-
|
155
|
-
|
75
|
-
|
75
|
-
|
75
|
-
|
|
16
|
145
|
-
|
175
|
-
|
210
|
-
|
80
|
-
|
90
|
-
|
95
|
-
|
|
20
|
180
|
-
|
220
|
-
|
260
|
-
|
100
|
-
|
110
|
-
|
120
|
-
|
|
22
|
200
|
-
|
240
|
-
|
285
|
-
|
110
|
-
|
120
|
-
|
130
|
-
|
|
25
|
225
|
-
|
275
|
-
|
325
|
-
|
125
|
-
|
140
|
-
|
150
|
-
|
|
28
|
250
|
310
|
310
|
365
|
365
|
475
|
146
|
155
|
155
|
170
|
170
|
195
|
|
32
|
290
|
350
|
350
|
415
|
415
|
545
|
160
|
175
|
175
|
190
|
190
|
225
|
|
36
|
325
|
395
|
395
|
470
|
470
|
610
|
180
|
200
|
200
|
215
|
215
|
250
|
|
40
|
360
|
440
|
440
|
520
|
520
|
680
|
200
|
220
|
220
|
240
|
240
|
280
|
|
45
|
405
|
495
|
495
|
585
|
585
|
765
|
225
|
250
|
250
|
270
|
270
|
315
|
|
50
|
450
|
550
|
550
|
650
|
650
|
850
|
250
|
275
|
275
|
300
|
300
|
350
|
