Hard-coded bending type identifiers in reinforcement shape recognition

Tekla Structures recognizes different reinforcing barreinforcement that represents a steel bar used to reinforce a concrete structure

The steel bars are usually ribbed and they are used to increase the tensile strength of concrete.

bending shapes and assigns bending type identifiers to them.

The bending type identifiers in the table below are internal, hard-coded types of Tekla Structures. The leg dimensions ( D1 , D2 , and so on) and bending angles ( A1 , A2 , and so on) of reinforcing bars are Tekla Structures internal dimensions and angles. You can map the Tekla Structures internal bending types, for example, to country- or project-specific bending types, and the Tekla Structures internal dimensions and angles to specific template attributes. You can do this in the rebar_schedule_config.inp file.

Reinforcing bar bending dimensions are calculated so that the leg dimensions ( D1 , D2 , and so on) follow the outer edge, or the edge extension, of the reinforcing bar. The total length is calculated according to the center line of the reinforcing bar.

If Tekla Structures does not recognize the shape of a reinforcing bar, it assigns the UNKNOWN bending type to it.

The magenta points in the images in the table below represent the points you pick in the model when you create reinforcing bars.

Note:

If you want to customize the hard-coded bending shapes or define new bending shapes, use Rebar shape manager.

Bending type identifier	Bending shape
1
2_1	Requires standard bending radius.
2_2	Non-standard bending radius.
3_1
3_2
4
4_2
4_3
4_4
5_1
5_2
5_3
6_1
6_2
7
8
9	Requires 180 degree hook.
10
11	D1 = Radius from center of circle to the center line of reinforcing bar.
12
13	Can also be modeled using hooks at both ends (i.e. model D1 and D5 using 90 degree hooks).
14	Requires 90 degree hooks at both ends.
14_2
14_3
14_4	Requires 90 degree hooks at both ends.
14_5	Recognized when the start point and end point are in the same location and no hooks are used. If `XS_REBAR_RECOGNITION_HOOKS_CONSIDERATION` is set to `FALSE` , reinforcing bars with hooks (types 14 and 48) are recognized as 14_5.
15	Requires hooks at both ends.
16_1
16_2
17
18
19
20_1
20_2
21
22
23
24
25
26	Requires 180 degree hooks at both ends.
27	Requires 90 degree hooks at both ends.
28	Requires 180 degree hooks at both ends.
29	Requires 90 degree hooks at both ends.
29_2
29_3
29_4
29_5
30	Requires 180 degree hooks at both ends.
31	Requires 90 degree hooks at both ends.
32	Requires 180 degree hooks at both ends.
32_2
33	Requires 90 degree hooks at both ends.
34
35	Requires 180 degree hook.
36	Requires 180 degree hook.
36_2	Can also be modeled using hooks at both ends.
36_3	Can also be modeled using hooks at both ends.
37	Requires 180 degree hook.
38	Requires 180 degree hook at one end and 90 degree hook at the other end.
38_2
39
40	Requires 180 degree hooks at both ends.
41	Requires 90 degree hooks at both ends.
42	Requires 180 degree hooks at both ends.
43
43_2
44	Requires hooks at both ends.
44_2	Requires 180 degree hooks at both ends.
45	Requires hooks at both ends.
45_2	Requires 180 hooks at both ends.
46	Requires hooks at both ends.
47	Requires 90 degree hooks at both ends.
48	Requires hooks at both ends.
48_2	Requires hooks at both ends.
48_3
49	D1 = Reinforcing bar center line diameter.
49_2
50	Requires hooks at both ends.
51	Requires 90 degree hooks at both ends.
52	Requires hooks at both ends.
53	Requires hooks at both ends.
54	Requires hooks at both ends.
55
56
57
58
59
60
61	Requires hooks at both ends.
61_2	Recognized if `XS_REBAR_RECOGNITION_HOOKS_CONSIDERATION` is set to `FALSE`.
61_3	Requires hooks at both ends.
62	Requires hook.
63	Requires hook.
64	Requires hooks at both ends.
64_2	Recognized if `XS_REBAR_RECOGNITION_HOOKS_CONSIDERATION` is set to `FALSE`.
65	Requires hooks at both ends.
65_2	Recognized if `XS_REBAR_RECOGNITION_HOOKS_CONSIDERATION` is set to `FALSE`.
66
67
67_2
68
69_1
69_2
70_1
70_2
71
72
73_1
73_2
73_3
74
75_1
75_2
76
77
78
79_1
79_2
80
`UNKNOWN`	For example: