CLWYD
REINFORCEMENTS

Rhosddu Industrial Estate
Rhosddu
Wrexham
Clwyd LL11 4YL

Tel: 01978 354454
Fax: 01978 291373

BAR REINFORCEMENTS

Ref. BS 4466/89

A
Shape Code 20		 A + h
Shape Code 32		 A + 2h
Shape Code 33		 A + n
Shape Code 34
       
A + 2n
Shape Code 35		 A + C + (E) + 0.57 (B+D) - PI*d
Shape Code 36		 A + B - ½r - d
Shape Code 37
       
A + B + C - r - 2d
Shape Code 38		 A + 0.57 B + C - 1.57d
Shape Code 39		 A + B + C
Shape Code 41
       
A + B + C + n (<= 45°)
Shape Code 42		 A + 2b + C + E
Shape Code 43		 A + B + C - 1.57d
Shape Code 45		 A + B + C
Shape Code 48
       
A + B + C for angles <= 45°
Shape Code 49		 A + B - ½r - d
Shape Code 51		 A + B + C + D + 1 ½r - 3d
Shape Code 52
       
A + B + C + D + E - 2r - 4d
Shape Code 53		 A + B + C - r - 2d
Shape Code 54		 A + B + C + D + E -2r - 4d
Shape Code 55
       
2 (A + B) + 12d
Shape Code 61		 A + C
Shape Code 62		 A
Shape Code 65		 A + B + C + 2D + E + 10d
Shape Code 75
       
2A + B + 20d
Shape Code 77		 2A + B + C + 3d
Shape Code 78		 2A + 3B + 10d
Shape Code 79		 2A + 3B + 18d
Shape Code 82
       
A + 2B + C + D - 2r - 4d
Shape Code 83		 A + B + 0.57C + D - ½r - 2.57d
Shape Code 85		 C / B*PI (A + D) (1 <= 12m)
Shape Code 87
       

Ref. BS 8666:2000

A
Shape Code 00		 A + (B) - ½ r - d
Shape Code 11		 A + (B) - ½r - d
Shape Code 12		 A + 0.57B + (C) - 1.57d
Shape Code 13
       
A + (C)
Shape Code 15		 A + B + (C) - r - 2d
Shape Code 21		 A + B + (E)
Shape Code 25		 A + B + (C)
Shape Code 26
       
A + B + C + (D) 1½r - 3d
Shape Code 31		 2A - 3B + 17d
Shape Code 33		 A + B + C + D + (E) - 2r - 4d
Shape Code 41		 A + (B) + (C) + D + (E) - 2r - 4d
Shape Code
       
A + 2B + C + (E)
Shape Code 46		 2(A + B) + 16d
Shape Code 51		 A
Shape Code 67		 C*PI (A - d)
Shape Code 77
       

 

Mimimum Former Radii, Bend and Hook Allowances

The dimesions in parentheses are the free dimensions. If a shape given in this table is required but a different dimension is to allow for the possible deviations, the shape can be drawn out and given the shape code 99 and the free dimension shall be indicated in parenthesis.

All dimensions in millimetres.
Type and grade R Type and grade T, B and S Type and grade F, D and W
Nominal Bar Size Minimum radius for scheduling Minimum diameter of bending former Minimum end dimension Nominal Bar Size Minimum radius for scheduling Minimum diameter of bending former Minimum end dimension Nominal wire Size Minimum radius for scheduling Minimum diameter of bending former Minimum end dimension
D r M A d r M A d r M A

-
6
-
8
-
10
12
16
20
25
32
40

-
12
-
16
-
20
24
32
40
50
64
80 		-
24
-
32
-
40
48
64
80
100
128
160 		-
110
-
115
-
120
125
130
160
200
260
320 		-
6
-
8
-
10
12
16
20
25
32
40 		-
12
-
16
-
20
24
32
70
87
112
140 		-
24
-
32
-
40
48
64
140
175
224
280 		-
110
-
115
-
120
125
130
190
240
305
380 		5
6
7
8
9
10
12
-
-
-
-
- 		10
12
14
16
18
20
24
-
-
-
-
- 		20
24
28
32
36
40
48
-
-
-
-
-

110
110
115
115
120
120
125
-
-
-
-
-

NOTE 1: Due to "spring back" the actual radius of bend will be slightly greater than half the diameter of former.
NOTE 2: For bends (bobs) the minimum straight length beyond the end of the curved portion is 5d, or 10d for links.

 

NOTES
  

1. Shape Code 99 / All other shapes where a standard or combination of standard shapes cannot be used. No other shape code number, form of designation or abbreviation shall be used in scheduling. A 99 shape code shall have a maximum of four bends. A dimensional sketch shall be drawn over the dimension columns A to E. Every dimension shall be specified and the dimension that is to allow for permissable deviations shall be indicated in parenthesis, otherwise the fabricator is free to choose which dimension shall allow for the tolerance.		  

2. Generally an inside or outside dimension shall be indicated by the position of the bending dimensions in the sketch. If the form of the bar is such that there may be doubt as to which is the inside of the bar, arrows should be drawn on the bending schedule or the dimension stated with the suffix o.d. i.d. (outside or inside dimension)

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