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OBREINFORCEMENT

BS 8666:2005 Shape codes for reinforcing bar

Method of measurement of bending dimensions

Total length of bar (L) measured along centre line

Shape Code 00

Shape 2

A

Shape Code 01

Shape 1

A
Stock lengths.

See Note 4.

Shape Code 11

Shape 3

A+(B)-0.5r-d

Neither A nor B shall be less than P in Table 2

Shape Code 12

Shape 4

A+(B)-0.43R - 1.2d

Neither A nor B shall be less than P in Table 2 nor less than (R + 6d)

Shape Code 13

Shape 5

A+0.57B+(C)-1.6d

B shall not be less than 2(r+d). Neither A nor C shall be less than P in Table 2 nor less than (B/2+5d). See Note 3.

Key
1 Semi-circular

Shape Code 14

Shape 6

A+(C)-4d

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 15

Shape 7

A+(C)

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 21

Shape 8

A+B+(C)-r-2d

Neither A nor (C) shall be less than P in Table 2.

Shape Code 22

Shape 9

A+B+C+(D)-1.5r-3d

C shall not be less than 2(r + d). Neither A nor (D) shall be less than P in Table 2. (D) shall not be less than C/2 + 5d.

Key
1 Semi-circular

Shape Code 23

Shape 10

A+B+(C)-r-2d

Neither A nor (C) shall be less than P in Table 2.

Shape Code 24

Shape 11

A+B+(C)

A and (C) are at 90° to one another.

Shape Code 25

Shape 12

A+B+(E)

Neither A nor B shall be less than P in Table 2. If E is the critical dimension, schedule as 99 and specify A or B as the free dimension. See Note 1.

Shape Code 26

Shape 13

A+B+(C)

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 27

Shape 14

A+B+(C)-0.5r-d

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 28

Shape 15

A+B+(C)-0.5r-d

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 29

Shape 16

A+B+(C)-r-2d

Neither A nor (C) shall be less than P in Table 2. See Note 1.

Shape Code 31

Shape 17

A+B+C+(D)-1.5r-3d

Neither A nor (D) shall be less than P in Table 2.

Shape Code 32

Shape 18

A+B+C+(D)-1.5r-3d

Neither A nor (D) shall be less than P in Table 2.

Shape Code 33

Shape 19

2A+1.7B+2(C)-4d

A shall not be less than 12d + 30mm. B shall not be less than 2(r+d). (C) shall not be less than P in Table 2, nor less than B/2 + 5d. See Note 3.

Key
1 Semi-circular

Shape Code 34

Shape 20

A+B+C+(E)-0.5r-d

Neither A nor (E) shall be less than P in Table 2. See Note 1.

Shape Code 35

Shape 21

A+B+C+(E)-0.5r-d

Neither A nor (E) shall be less than P in Table 2. See Note 1.

Shape Code 36

Shape 22

A+B+C+(D)-r-2d

Neither A nor (D) shall be less than P in Table 2. See Note 1.

Shape Code 41

Shape 23

A+B+C+D+(E)-2r-4d

Neither A nor (E) shall be less than P in Table 2.

May also be used for a flag link viz:
Shape 24

Shape Code 44

Shape 25

A+B+C+D+(E)-2r-4d

Neither A nor (E) shall be less than P in Table 2.

Shape Code 46

Shape 26

A+2B+C+(E)

Neither A nor (E) shall be less than P in Table 2.
See Note 1.

Shape Code 47

Shape 27

2A+B+2C+1.5r-3d

(C) and (D) shall be equal and not more than A nor less than P in Table 2.

Where (C) and (D) are to be minimized the following formula may be used: L=2A+B+max(21d,240)

Shape Code 51

Shape 28

2(A +B +(C)) -2.5r -5d

(C) and (D) shall be equal and not more than A or B nor less than P in Table 2.

Where (C) and (D) are to be minimized the following formula may be used: L=2A+2B+max(16d,160)

Shape Code 56

Shape 29

A+B+C+(D)+2(E)-2.5r-5d

(E) and (F) shall be equal and not more than B or C, nor less than P in Table 2.

Shape Code 63

Shape 30

2A+3B+2(C)-3r-6d

(C) and (D) shall be equal and not more than A or B nor less than P in Table 2.

Where (C) and (D) are to be minimized the following formula may be used: L=2A+3B+max(14d,150)

Shape Code 64

Shape 31

A+B+C+2D+E+(F)-3r-6d

Neither A nor (F) shall be less than P in Table 2. See Note 2.

Shape Code 67

Shape 32

A

See clause 10.

Shape Code 75

Shape 33

π(A-d)+B

Where B is the lap.

Shape Code 77

Shape 34

Cπ(A-d)

C = number of turns

Where B is greater than A/5 this equation no longer applies, in which case the following formula may be used: L=C((π(A-d))2+B2)0.5

Shape Code 98

Shape 35

A+2B+C+(D)-2r-4d

Isometric sketch

Neither C or (D) shall e less than P in Table 2.

Shape Code 99

All other shapes

To be calculated

See Note 2.

Where standard shapes cannot be used.

No other shape code number, form of designation or abbreviation shall be used in scheduling.

A dimensioned sketch shall be drawn over the dimension columns A to E. Every dimension shall be specified and the dimension that is to allow for permissible deviations shall be indicated in parenthesis, otherwise the fabricator is free to choose which dimension shall allow for tolerance