BS 8666: 2020
00
A
Cut straight lengths
01
A
Stock lengths. See Note 1.
11
A + (B) – 0.5r – d
Neither A nor B shall be less than P in Table 2
12
A + (B) – 0.43R – 1.2d.
Neither A nor B shall be less than (R + d) + greater of 5d or 90. See Note 2.
13
A + 0.57B + (C) – 1.6d.
Neither A nor C shall be less than B/2 + greater of 5d or 90 mm. B shall not be less than q in Table 2. B shall not exceed 400 + 2d.
14
A + (C).
Neither A nor (C) shall be less than P in Table 2. See Note 3.
15
A + (C)
Neither A nor (C) shall be less than P in Table 2. See Note 3.
21
A + B + (C) – r – 2d
Neither A nor (C) shall be less than P in Table 2.
22
A + B + 0.57C + (D) – 0.5r – 2.6d
Neither A nor (D) shall be less than P in Table 2. C shall not be less than q in Table 2. C shall not exceed 400 + 2d. (D) shall not be less than C/2 + greater of 5d or 90.
23
A + B + (C) – r – 2d
Neither A nor (C) shall be less than P in Table 2.
24
A + B + (C)
Neither A nor (C) shall be less than P in Table 2. A and C are at 90° to one another. See Note 3.
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. If bend angles approach 90° schedule as a shape code 99 with horizontal offsets. See Note 3.
26
A + B + (C)
Neither A nor (C) shall be less than P in Table 2. See Note 3.
27
A + B + (C) – 0.5r – d
Neither A nor (C) shall be less than P in Table 2. See Note 3.
28
A + B + (C) – 0.5r – d
Neither A nor (C) shall be less than P in Table 2. See Note 3.
29
A + B + (C)
Neither A nor (C) shall be less than P in Table 2. See Note 3.
31
A + B + C + (D) – 1.5r – 3d
Neither A nor (D) shall be less than P in Table 2.
32
A + B + C + (D) – 1.5r – 3d
Neither A nor (D) shall be less than P in Table 2.
33
2A + 1.7B + 2(C) – 4d
A shall not be less than B/2 + (C) where (C) is at least B/2 plus greater of 5d or 90. B shall not be less than q in Table 2. B shall not exceed 400 + 2d. C shall not be less than B/2 + greater of 5d or 90.
34
A + B + C + (E) – 0.5r – d
Neither A nor (E) shall be less than P in Table 2. See Note 3.
35
A + B + C + (E) – 0.5r – d
Neither A nor (E) shall be less than P in Table 2. See Note 3.
36
A + B + C + (D) – r – 2d
Neither A nor (D) shall be less than P in Table 2. See Note 3.
41
A + B + C + D + (E) – 2r – 4d
Neither A nor (E) shall be less than P in Table 2.
44
A + B + C + D + (E) – 2r – 4d
Neither A nor (E) shall be less than P in Table 2.
46
A + 2B + C + (E)
Neither A nor (E) shall be less than P in Table 2. See Note 3.
47
2A + B + 2(C) + 2q – 3r – 6d
(C) and (D) shall be equal and not more than A nor less than P in Table 2. Hooks to be standard hooks as defined as q in Table 2.
48
2A + B + 2(C) – r – 2d
See Figure 7. (C) and (D) shall be equal and not more than A nor less than P in Table 2.
51
2[A + B + (C)] – 2.5r – 5d
(C) and (D) shall be equal and not more than A or B not 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)
52
2(A + B) + 2(C) – 1.5r – 3d
(C) and (D) shall be equal and not more than B nor less than P in Table 2. Where (C) and (D) are to be minimized the following formula may be used: For bar sizes ≤16: L = 2A + 2B + max (20d, 180). For bar sizes ≥20: L = 2A + 2B + 21d
56
A + B + C + D + 2(E) – 1.5r – 3d
(E) and (F) shall be equal and not more than A or B, nor less than P in Table 2. See Note 3.
63
2A + 3B + (2C) – 3r – 6d
(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: For bar sizes ≤16: L = 2A + 3B + max (14d, 140). For bar sizes ≥20:L = 2A + 3B + 13d.
64
A + B + C + 2D + E + (F) – 3r – 6d
Neither A nor (F) shall be less than P in Table 2.
67
A
See Clause 10.
75
Л (A – d) + B + 25
Where B is the lap.
77
CЛ (A – d)
Where C is the 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 {[Л(A – d)]² + B²} 0.5
98
A + 2B + C + (D) – 2r – 4d
Isometric sketch. Neither C nor (D) shall be less than P in Table 2.
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 dimensioned sketch shall be drawn over the dimension columns A to R. 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.
Coupler 99’s to be scheduled to the end of the rebar, excluding any coupler type. See Fig 1. Coupler 99’s may be scheduled to the end of the coupler when coupler type is known.
To be calculated. See Note 4.
Shape Code Notes
Note 1
Stock lengths are available in a limited number of lengths (e.g. 6 m, 12 m). Dimension A for shape code 01 should be regarded as indicative and used for the purpose of calculating total length. Actual delivery lengths should be by agreement with the supplier. See also the footnote to Table 7.
Note 2
For shapes with straight and curved lengths (e.g. shape code 12) the largest practical mandrel size for the production of a continuous curve is 400 mm. See also Clause 10.
Note 3
The length equations for shape codes 14, 15, 24, 25, 26, 27, 28, 29, 34, 35, 36, 46 and 56 are approximate and where the bend angle is greater than 45° or, for shape codes 14, 29 and 56 with an acute angle where the bend angle is close to 90° or exceeds 135°, 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.
Note 4
Five bends or more might be impractical within permitted tolerances, unless agreed with the fabricator.
