Minimum former
radii. bend and hook allowances
|
|
 
|
|
Welded fabric complying
with BS 4483 |
Grade
460/425 bars complying
with BS 4449 or BS 4461
(Type & grade T) |
Grade
250 bars complying
with BS 4449
(Type & grade T) |
d
|
rt
|
n
|
np*
|
h
|
5
6
7
8
9
10
12
|
15
18
21
24
27
30
36
|
100
100
100
100
120
120
130
|
113
115
118
120
143
145
160
|
100
100
100
100
135
135
145
|
|
d
|
rt
|
n
|
np*
|
h
|
6 *
8
10
12
16
20
25
32
40
50 * |
18
24
30
36
48
60
100
128
160
22 |
100
100
100
100
100
110
180
230
180
350 |
1150
120
125
130
140
160
253
324
397
497 |
100
100
110
140
180
220
350
450
560
700 |
|
d
|
rt
|
n
|
np*
|
h
|
6 *
8
10
12
16
20
25
32
40
50 * |
12
16
20
24
32
40
50
64
80
100 |
100
100
100
100
100
100
130
160
200
250 |
112
117
121
125
133
141
182
226
183
354 |
100
100
100
110
150
180
230
290
360
450 |
|
Tolerances
|
|
CP110
schedule dimensions
Deduction for tolerances |
BS 4466
Cutting and Bending tolerances
|
|
|
Reference
CP 110
Clause 3.11.3.2 |
- 40mm |
Straight lenghts*
including lenghts to be bent |
+_ 25mm |
- 10mm
- 15mm
- 20mm |
|
Bending
Dimensions |
1m |
|
> 1
2m |
|
> 2m |
|
25mm
+ 5 to - 10mm
+ 5 to - 25mm
|
|
*
For these shape in
particular the effect of a positive
cutting tolerance increasing the actual
length of the "free" legs by up
to 25mm should be considered. Bracketed
dimensions are run-out dimension and may
be omitted from the final schedule.
For shape codes 60, 81, 72, 73 and 74
internal dimensions, I.D. are assumed. For
shape codes 41, 42, 43 and 49 the
formulae for L should not be used for
angles exceeding 45. |
Specifications
|
Minimum
Ultimate Tensile Strength |
| N / mm2
(kfg / mm2) |
Straight
Bars
|
| ASTM A82 |
|
550 (56.08)
|
| ASTM 496 |
|
586 (59.76) |
| ASTM 615 |
G - 40 |
482 (49.15) |
| |
G - 60 |
620 (63.22) |
| BS 4449 |
G - 250 |
250 (25.50) |
| |
G - 460 |
460 (46.90) |
| |
G - 425 |
425 (43.34) |
| BS 4461 |
|
460 (46.90) |
| BS 4482 |
|
485 (49.50) |
| DIN 488 |
|
340 - 500 (34.67
- 50.98) |
| JIS 3112 |
SD 35 |
490 (49.96) |
| |
SD 49 |
559 (57.00) |
|
|
|
|
|