Shape Code Total length of bar L Measured along center line 00 A 12 A + (B) – 0.43R – 1.2d Neither A nor B shall be less than P in Table 2 nor less than (R + 6d) 14 A + (C) – 4d Neither A nor (C) shall be less than P in Table 2. See note 1. 21 A + B + (C) – r – 2d Neither A nor (C) shall be less than P in Table 2 23 A + B + (C) – r – 2d Neither A nor (C) shall be less than P in Table 2 25 A + B + (E) Neither A nor B shall be less than P in Table 2. If E is the critical dimension, schedule a 99 and specify A or B as the free dimension. See note 1. 27 A + B + (C) – 0.5r – d Neither A nor (C) shall be less than P in Table 2. See note 1. 29 A + B + (C) – r – 2d Neither A nor (C) shall be less than P in Table 2. See note 1. 32 A + B + C + (D) – 1.5r – 3d Neither A nor (D) shall be less than P in Table 2. See note 1. 34 A + B + C + (E) – 0.5r - d Neither A nor (E) shall be less than P in Table 2. See note 1 36 A + B + C + (D) – r – 2d Neither A nor (D) shall be less than P in Table 2. See note 1 44 A + B + C + D + (E) – 2r – 4d Neither A nor (E) shall be less than P in Table 2 47 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) 56 A + B + C + (D) + 2(E) – 2.5r – 5d (E) & (F) shall be equal and not more than B or C, nor less than P in Table 2 64 A+B+C+2D+E+(F)-3r-6d Neither A nor (F) shall be less than P in Table 2. See note 2 75 p (A-d)+B Where B is the overlap 98 A+2B+C+(D)-2r-4d Isometric sketch. Neither C nor (D) shall be less than P in Table 2

Shape Code Total length of bar L Measured along center line 11 A+(B)-0.5r-d Neither A nor B shall be less than P in Table 2 13 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 15 A + (C) Neither A nor (C) shall be less than P in Table 2. See note 1. 22 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. Where used as a link, A shall not be less than P for links in Table 2 and (D) shall not be less than (C/2 + 5d.) Key: 1 - Semi-circular 24 A+B+(C) A and (C) are at 90° to one another 26 A + B + (C) Neither A nor (C) shall be less than P in Table 2. See note 1. 28 A + B + (C) – 0.5r – d Neither A nor (C) shall be less than P in Table 2. See note 1. 31 A + B + C + (D) – 1.5r – 3d Neither A nor (D) shall be less than P in Table 2 33 2A + 1.7B + 2C - 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 35 A + B + C + (E) – 0.5r – d Neither A nor (E) shall be less than P in Table 2. See note 1 41 A + B + C + D + (E) - 2r - 4d Neither A nor (E) shall be less than P in Table 2. May also be used for flag link viz: 46 A + 2B + C + (E) Neither A nor (E) shall be less than P in Table 2. See note 1 51 2 (A + B + (C)) - 2.5r - 5d (C) and (D) shall be equal and not more than A or B nor less than P for links in Table 2. Where (C) and (D) are to be minimized the following formula may be used: L = 2A + 2B + max (16d,160) 63 2A + 3B + 2(C) - 3r - 6d (C) and (D) shall be equal and not more than A or B nor less than P for links in Table 2. Where (C) and (D) are to be minimized the following formula may be used: L = 2 A + 3B + max(14d, 150) 67 A See Clause 10 77 Cp(A-d) + B Where B is greater than A/5 this equation no longer applies, in which case the following formula may be used: L = C ((p(A-d))² + B²)1/2 C = Number of turns 99 All other shapes where standard shapes cannot be used. No other shape code number, form of designation or abbreviation shall be used in scheduling. 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 permissible deviations shall be indicated in parenthesis, otherwise the fabricator is free to choose which dimensions shall allow for tolerance. To be calculated See Note 2.

The values for minimum radius and end projection, r and P respectively, as specified in Table 2, shall apply to all shape codes (see 7.6).
The dimensions in parenthesis 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 shall be drawn out and given the shape code 99 and the free dimension shall be indicated in parenthesis.
The length of straight between two bends shall be at least 4d, see figure 6.
Figures 4, 5 and 6 should be used in the interpretation of bending dimensions.

NOTE 1  The length equations for shape codes 14, 15, 25, 26, 27, 28, 29, 34, 35, 36 and 46 are approximate and where the bend angle is greater than 45º, the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the central axis of the bar. When the bending angles approach 90º, it is preferable to specify shape code 99 with a fully dimensional sketch.

NOTE 2  Five bends or more might be impractical within permitted tolerances.

NOTE 3  For shapes with straight and curved lengths (e.g. shape codes 12, 13, 22, 33 and 47) the largest practical mandrel size for the production of a continuous curve is 400mm. See also Clause 10.

Type of steel reinforcement	Notation
Grade B500A, Grade B500B or Grade B500C conforming to BS4449:2005	H
Grade B500A conforming to BS4449:2005	A
Grade B500B or Grade B500C conforming to BS4449:2005	B
Grade B500C conforming to BS4449:2005	C
A specified grade and type of ribbed stainless steel conforming to BS 6744:2001	S
Reinforcement of a type not included in the above list having material properties that are defined in the design or contract specification.	X

NOTE In the Grade description B500A etc, 'B' indicates reinforcing steel.

Dimensioning of an acute angle Fig. 4 Dimensioning of cranked bars Fig. 5 Example of bar with more than one bend Fig. 6

Table 2 Minimum Schedule Radius and Bend Allowances Normal Bar Size d Minimum Radius for Scheduling r Minimum Diameter of Bending Former Minimum end projection p General (min 5d straight) Links where bend<150º 6mm 12mm 24mm 110mm 110mm  8mm 16mm  32mm  115mm  115mm   10mm 20mm  40mm  120mm  130mm   12mm 24mm  48mm  125mm  160mm   16mm 32mm 64mm  130mm  210mm   20mm 70mm  140mm  190mm  290mm   25mm 87mm  175mm  240mm 365mm  32mm 112mm  224mm  305mm  465mm   40mm 140mm  280mm  380mm  580mm  NOTE 1 Due to 'spring back' the actual radius of the bend will be slightly greater than half the diameter of the former.

Tolerances on cutting and bending dimensions

The tolerances for cutting and/or bending dimensions shall be in accordance with Table 5 and shall be taken into account when completing the schedule. The end anchorage or the dimension in parentheses in the shape codes specified in Table 3 shall be used to allow for any permissible deviations resulting from cutting and bending.

Cutting and bending process	Tolerance (mm)
Cutting of straight lengths (including reinforcement for subsequent bending	+25, -25
Bending: ≤ 1 000 mm > 1 000 mm to ≤ 2 000 mm > 2 000 mm	+5, -5 +5, -10 +5, -25
Length of bars in fabric	±25 or 0.5% of the length (whichever is greater)

Radius of bending

Reinforcement to be formed to a radius exceeding that specified in Table 6 shall be supplied straight.

Bar Size	Radius
6mm	2.5m
8mm	2.75m
10mm	3.5m
12mm	4.25m
16mm	7.5m
20mm	14.0m
25mm	30.0m
32mm	43.0m
40mm	58.0m

NOTE 1 The required curvature may be obtained during placing.
NOTE 2 For shapes with straight and curved lengths (e.g. shape code 12, 13, 22 and 33) the largest practical radius for the production of a continuous curve is 200 mm, and for larger radii the curve may be produced by a series of short straight sections

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