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BS 8666: 2000: Standard Shapes

Shape and total length of bar (L) measured along centre line

00 Total length (L) = A
BS8666_00
11 Total length (L) = A + (B) – 1/2r – d
BS8666_11
12 Total length (L) = A+ (B) – 1/2R – d
BS8666_12
13 Total length (L) = A + 0.57B + (C)-1.57d
BS8666_13
15 Total length (L) = A + (C)
BS8666_15
21 Total length (L) = A + B + (C) – r – 2d
BS8666_21
25 Total length (L) = A + B + (E)
BS8666_25
26 Total length (L) = A + B + (C)
BS8666_26
31 Total length (L) = A + B + C + (D) – 1 1/2r – 3d
BS8666_31
33 Total length (L) = 2A + 3B + 17d (this includes 10d straight for C)
BS8666_33
41 Total length (L) = A +B+ C + D + (E) – 2r – 4d
BS8666_41
44 Total length (L) = A + B + C + D + (E) – 2r – 4d
BS8666_44
46 Total length (L) = A + 2B + C + (E)
BS8666_46
51 Total length (L) = 2(A + B) + 16d
BS8666_51
67 Total length (L) = A
BS8666_67
77 Total length (L) = C.π.(A – d)
BS8666_77
BS8666_grade T

table of minimum dimensions
bar size R A
8 16 115
10 20 120
12 24 125
16 32 130
20 70 190
25 87 240
32 112 305
40 140 380

bar dimensions/weights
nominal size mm cross section area mm2 mass kg/m
50 1963.5 15.413
40 1256.6 9.864
32 804.2 6.313
25 490.9 3.854
20 314.2 2.466
16 201.1 1.579
12 113.1 0.888
10 78.5 0.616
08 50.3 0.395
radius bending: maximum values required bending
bar size 8 10 12 16 20 25 32 40
radius
(m)
2.75 3.5 4.25 7.5 14.0 30.0 43.0 58.0