Junction Types
In the following, the junction types are listed that are automatically identified by CadnaB in the course of the calculation. Please note that in the event of an offset between the sending and receiving areas, cross junctions are detected, provided the offset is <=0.5 m. If the offset is >0.5 m, a (rotated) T-junction is used. The illustrations of the junction geometry usually shows the junction between the separating wall and the right flanking wall in the case of horizontal sound transmission. The same applies for all other junctions between separating and flanking elements.
The following table start with the junction types mentioned in ISO 12354-1 (Nr. 1 to 28). Furthermore, additional junction types recognized by CadnaB are listed (Nr. 29 +). Type 0 (zero) is assigned to invalid junctions.
After a calculation, the junction type numbers are displayed in the results dialog, see „Results“ Mode.
The designations of the transmission paths and the component numbers are based on the entries in the standard. The formulas marked with "ISO 12354-2000" in the ISO 12354 - Method are predominantly included in ISO 12354-2017, however with partly different description texts.
Calculation methods for the DIN 4109 are only available in German documentation.
Junction types from ISO 12354-1
| Type No. | Junction Designation | Illustration | ISO 12354 - Method |
| 1 | rigid cross junction |  |
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| 2 | rigid T-junction |  |
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| 3 | rigid T-junction, receiving room shifted |  |
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| 4 | rigid T-junction, sending room shifted |  |
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| 5 | cross junction, flexible, continuous flanking element |  |
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| 6 | T-junction, flexible, continuous flanking element |  |
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| 7 | T-junction, flexible, receiving room shifted |  |
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| 8 | T-junction, flexible, sending room shifted |  |
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| 9 | cross junction, flexible, continuous separating element |  |
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| 10 | T-junction, flexible, continuous separating element |  |
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| 11 | T-junction, flexible, continuous flanking element, receiving room shifted |  |
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| 12 | T-junction, flexible, continuous flanking element, sending room shifted |  |
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| 13 | cross junction separating single leaf/flanking double leaf, continuous separating element |  |
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| 14 | T-junction, separating single leaf/flanking double leaf, continuous flanking element |  |
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| 15 | joint to double leaf lightweight flanking element (flanking transmission described by Dn,f/Ln,f) |  |
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| 16 | joint to single leaf heavy flanking element (flanking transmission described by Dn,f/Ln,f) |  |
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| 17 | cross junction separating double leaf/flanking single leaf, continuous flanking element |  |
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| 18 | T-junction separating double leaf/flanking single leaf, continuous flanking element |  |
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| 19 | cross junction, double leaf lightweight constructions, continuous separating element |  |
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| 20 | T-junction, double leaf lightweight constructions, continuous separating element |  l |
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| 21 | rigid cross-junction, double leaf separating/single leaf flanking element, continuous cavity |  |
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| 22 | rigid T-junction, double leaf separating/single leaf flanking element, continuous cavity |  |
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| 24 | Thickness change, only path Ff |  |
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| 27 | corner, rigid (path Df only) |  |
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| 28 | corner, rigid (path Fd only) |  |
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Derived Junction Types
| Type No. | Junction Designation | ISO 12354 - Method |
| 29 | T-junction between a single-leaf, rigid separating and SR-sided flanking element and a RR-sided, double-leaf, flexible flanking element |
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| 30 | T-junction between a single-leaf, rigid partition and RR-sided flanking element and a SR-sided double-leaf flexible flanking element |
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| 31 | cross junction between a single-leaf, rigid separating and SR-sided flanking element and RR-sided, double-leaf, flexible flanking element |
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| 32 | cross junction, rigid T-junction with flexible incoming element |
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| 33 | cross junction between a single-leaf, rigid partition and RR-sided flanking element and a SR-sided, double-leaf flexible flanking element |
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| 34 | cross junction, flexible separating element, rest rigid |
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| 35 | cross junction, rigid corner connection between a SR-sided and fourth element, rest flexible |
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| 36 | cross junction between a single-leaf, rigid partition and RR-sided flanking element and a SR-sided double-leaf flexible flanking element |
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| 37 | cross junction between a single-leaf, rigid separating and SR-sided flanking element and a RR-sided, double-leaf, flexible flanking element |
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| 38 | cross junction, rigid corner connection between RR-sided and fourth element, rest flexible |
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| 39 | T-junction with RR-sided flexible interlayer between single-leaf rigid elements |
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| 40 | T-junction with flexible interlayer on the SR side between single-leaf rigid elements |
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| 41 | cross junction with RR-sided flexible interlayer between single-leaf rigid elements |
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| 42 | cross junction with flexible interlayer on the SR side between single-leaf rigid elements |
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| 43 | cross junction between single-leaf rigid elements, TB with flexible interlayer |
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| 44 | cross junction between single-leaf rigid elements, fourth element with flexible interlayer |
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| 46 | T-junction with shifted receiving room; rigid separating element; rigid sending element; receiving element not available/not applicable; fourth element lightweight (calculated as junction 28) |
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| 47 | cross junction; rigid separating element; lightweight sending element; lightweight receiving element; fourth element flexible |
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| 48 | T-junction with shifted receiving room; rigid separating element; lightweight sending element; receiving element not available/not applicable; fourth element rigid |
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| 49 | T-junction with shifted receiving room; rigid separating element; lightweight sending element; receiving element not available/not applicable; fourth element flexible |
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| 50 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; rigid receiving element; fourth element flexible (calculated as junction 27) |
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| 51 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; lightweight receiving element; fourth element rigid |
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| 52 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; lightweight receiving element; fourth element flexible |
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| 53 | cross junction; lightweight separating element; rigid sending element; lightweight receiving element; fourth element flexible |
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| 54 | T-junction; lightweight separating element; rigid sending element; lightweight receiving element; fourth element not available/not applicable |
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| 55 | T-junction with shifted receiving room; lightweight separating element; rigid sending element; receiving element not available/not applicable; fourth element rigid |
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| 56 | T-junction with shifted receiving room; lightweight separating element; rigid sending element; receiving element not available/not applicable; fourth element flexible |
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| 57 | cross junction; lightweight separating element; lightweight sending element; rigid receiving element; fourth element flexible |
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| 58 | T-junction; lightweight separating element; lightweight sending element; rigid receiving element; fourth element not available/not applicable |
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| 59 | cross junction; lightweight separating element; lightweight sending element; lightweight receiving element; fourth element rigid (calculated as junction 19) |
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| 60 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; lightweight receiving element; fourth element rigid |
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| 61 | T-junction with shifted receiving room; lightweight separating element; lightweight sending element; receiving element not available/not applicable; fourth element flexible |
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| 62 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; rigid receiving element; fourth element rigid |
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| 63 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; rigid receiving element; fourth element flexible |
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| 64 | T-junction with shifted receiving room; lightweight separating element; lightweight sending element; receiving element not available/not applicable; fourth element rigid |
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| 65 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; lightweight receiving element; fourth element flexible |
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| 66 | cross junction; rigid separating element; rigid sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 67 | cross junction; rigid separating element; rigid sending element; receiving element with elastic interlayer; fourth element lightweight (calculated as junction 39) |
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| 68 | cross junction; rigid separating element; rigid sending element; lightweight receiving element; fourth element elastic interlayer (calculated as junction 29) |
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| 69 | T-junction with shifted receiving room; rigid separating element; rigid sending element; receiving element not available/not applicable; fourth element elastic interlayer |
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| 70 | cross junction; rigid separating element; sending element with elastic interlayer; rigid receiving element; fourth element elastic interlayer (calculated as junction 40) |
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| 71 | cross junction; rigid separating element; sending element with elastic interlayer; rigid receiving element; fourth element lightweight (calculated as junction 40) |
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| 72 | cross junction; rigid separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element elastic interlayer (calculated as junction 10) |
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| 73 | cross junction; rigid separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element lightweight (calculated as junction 10) |
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| 74 | cross junction; rigid separating element; sending element with elastic interlayer; lightweight receiving element; fourth element rigid |
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| 75 | cross junction; rigid separating element; sending element with elastic interlayer; lightweight receiving element; fourth element elastic interlayer |
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| 76 | cross junction; rigid separating element; sending element with elastic interlayer; lightweight receiving element; fourth element flexible |
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| 77 | T-junction; rigid separating element; sending element with elastic interlayer; lightweight receiving element; fourth element not available/not applicable |
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| 78 | T-junction with shifted receiving room; rigid separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element elastic interlayer |
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| 79 | T-junction with shifted receiving room; rigid separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element flexible |
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| 80 | cross junction; rigid separating element; lightweight sending element; rigid receiving element; fourth element elastic interlayer (calculated as junction 30) |
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| 81 | cross junction; rigid separating element; lightweight sending element; receiving element with elastic interlayer; fourth element rigid |
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| 82 | cross junction; rigid separating element; lightweight sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 83 | cross junction; rigid separating element; lightweight sending element; receiving element with elastic interlayer; fourth element flexible |
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| 84 | T-junction; rigid separating element; lightweight sending element; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 85 | cross junction; rigid separating element; lightweight sending element; lightweight receiving element; fourth element elastic interlayer |
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| 86 | T-junction with shifted receiving room; rigid separating element; lightweight sending element; receiving element not available/not applicable; fourth element elastic interlayer |
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| 87 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; rigid receiving element; fourth element elastic interlayer |
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| 88 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 89 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element flexible |
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| 90 | T-junction with shifted sending room; rigid separating element; sending element not available/not applicable; lightweight receiving element; fourth element elastic interlayer |
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| 91 | cross junction; separating element with elastic interlayer; rigid sending element; rigid receiving element; fourth element flexible (calculated as junction 6) |
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| 92 | cross junction; separating element with elastic interlayer; rigid sending element; receiving element with elastic interlayer; fourth element rigid |
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| 93 | cross junction; separating element with elastic interlayer; rigid sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 94 | cross junction; separating element with elastic interlayer; rigid sending element; receiving element with elastic interlayer; fourth element flexible |
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| 95 | T-junction; separating element with elastic interlayer; rigid sending element; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 96 | cross junction; separating element with elastic interlayer; rigid sending element; lightweight receiving element; fourth element rigid |
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| 97 | cross junction; separating element with elastic interlayer; rigid sending element; lightweight receiving element; fourth element elastic interlayer |
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| 98 | cross junction; separating element with elastic interlayer; rigid sending element; lightweight receiving element; fourth element flexible |
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| 99 | T-junction; separating element with elastic interlayer; rigid sending element; lightweight receiving element; fourth element not available/not applicable |
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| 100 | T-junction with shifted receiving room; separating element with elastic interlayer; rigid sending element; receiving element not available/not applicable; fourth element rigid |
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| 101 | T-junction with shifted receiving room; separating element with elastic interlayer; rigid sending element; receiving element not available/not applicable; fourth element flexible |
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| 102 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; rigid receiving element; fourth element rigid |
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| 103 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; rigid receiving element; fourth element elastic interlayer |
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| 104 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; rigid receiving element; fourth element flexible |
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| 105 | T-junction; separating element with elastic interlayer; sending element with elastic interlayer; rigid receiving element; fourth element not available/not applicable |
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| 106 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element rigid |
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| 107 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 108 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element flexible |
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| 109 | T-junction; separating element with elastic interlayer; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 110 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; lightweight receiving element; fourth element rigid |
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| 111 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; lightweight receiving element; fourth element elastic interlayer |
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| 112 | cross junction; separating element with elastic interlayer; sending element with elastic interlayer; lightweight receiving element; fourth element flexible |
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| 113 | T-junction; separating element with elastic interlayer; sending element with elastic interlayer; lightweight receiving element; fourth element not available/not applicable |
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| 114 | T-junction with shifted receiving room; separating element with elastic interlayer; sending element with elastic interlayer; receiving element not available/not applicable; fourth element rigid |
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| 115 | T-junction with shifted receiving room; separating element with elastic interlayer; sending element with elastic interlayer; receiving element not available/not applicable; fourth element elastic interlayer |
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| 116 | T-junction with shifted receiving room; separating element with elastic interlayer; sending element with elastic interlayer; receiving element not available/not applicable; fourth element flexible |
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| 117 | cross junction; separating element with elastic interlayer; lightweight sending element; rigid receiving element; fourth element rigid |
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| 118 | cross junction; separating element with elastic interlayer; lightweight sending element; rigid receiving element; fourth element elastic interlayer |
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| 119 | cross junction; separating element with elastic interlayer; lightweight sending element; rigid receiving element; fourth element flexible |
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| 120 | T-junction; separating element with elastic interlayer; lightweight sending element; rigid receiving element; fourth element not available/not applicable |
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| 121 | cross junction; separating element with elastic interlayer; lightweight sending element; receiving element with elastic interlayer; fourth element rigid |
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| 122 | cross junction; separating element with elastic interlayer; lightweight sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 123 | cross junction; separating element with elastic interlayer; lightweight sending element; receiving element with elastic interlayer; fourth element flexible |
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| 124 | T-junction; separating element with elastic interlayer; lightweight sending element; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 125 | cross junction; separating element with elastic interlayer; lightweight sending element; lightweight receiving element; fourth element rigid |
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| 126 | cross junction; separating element with elastic interlayer; lightweight sending element; lightweight receiving element; fourth element elastic interlayer |
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| 127 | cross junction; separating element with elastic interlayer; lightweight sending element; lightweight receiving element; fourth element flexible |
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| 128 | T-junction; separating element with elastic interlayer; lightweight sending element; lightweight receiving element; fourth element not available/not applicable |
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| 129 | T-junction with shifted receiving room; separating element with elastic interlayer; lightweight sending element; receiving element not available/not applicable; fourth element rigid |
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| 130 | T-junction with shifted receiving room; separating element with elastic interlayer; lightweight sending element; receiving element not available/not applicable; fourth element elastic interlayer |
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| 131 | T-junction with shifted receiving room; separating element with elastic interlayer; lightweight sending element; receiving element not available/not applicable; fourth element flexible |
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| 132 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; rigid receiving element; fourth element rigid |
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| 133 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; rigid receiving element; fourth element flexible |
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| 134 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; receiving element with elastic interlayer; fourth element rigid |
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| 135 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 136 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; receiving element with elastic interlayer; fourth element flexible |
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| 137 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; lightweight receiving element; fourth element rigid |
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| 138 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; lightweight receiving element; fourth element elastic interlayer |
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| 139 | T-junction with shifted sending room; separating element with elastic interlayer; sending element not available/not applicable; lightweight receiving element; fourth element flexible |
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| 140 | cross junction; lightweight separating element; rigid sending element; rigid receiving element; fourth element elastic interlayer (calculated as junction 18) |
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| 141 | cross junction; lightweight separating element; rigid sending element; receiving element with elastic interlayer; fourth element rigid |
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| 142 | cross junction; lightweight separating element; rigid sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 143 | cross junction; lightweight separating element; rigid sending element; receiving element with elastic interlayer; fourth element flexible |
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| 144 | T-junction; lightweight separating element; rigid sending element; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 145 | cross junction; lightweight separating element; rigid sending element; lightweight receiving element; fourth element elastic interlayer |
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| 146 | T-junction with shifted receiving room; lightweight separating element; rigid sending element; receiving element not available/not applicable; fourth element elastic interlayer |
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| 147 | cross junction; lightweight separating element; sending element with elastic interlayer; rigid receiving element; fourth element rigid |
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| 148 | cross junction; lightweight separating element; sending element with elastic interlayer; rigid receiving element; fourth element elastic interlayer |
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| 149 | cross junction; lightweight separating element; sending element with elastic interlayer; rigid receiving element; fourth element flexible |
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| 150 | T-junction; lightweight separating element; sending element with elastic interlayer; rigid receiving element; fourth element not available/not applicable |
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| 151 | T-junction; lightweight separating element; sending element with elastic interlayer; rigid receiving element; fourth element not available/not applicable cross junction; lightweight separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element rigid |
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| 152 | cross junction; lightweight separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 153 | cross junction; lightweight separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element flexible |
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| 154 | T-junction; lightweight separating element; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 155 | cross junction; lightweight separating element; sending element with elastic interlayer; lightweight receiving element; fourth element rigid |
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| 156 | cross junction; lightweight separating element; sending element with elastic interlayer; lightweight receiving element; fourth element elastic interlayer |
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| 157 | cross junction; lightweight separating element; sending element with elastic interlayer; lightweight receiving element; fourth element flexible |
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| 158 | T-junction; lightweight separating element; sending element with elastic interlayer; lightweight receiving element; fourth element not available/not applicable |
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| 159 | T-junction with shifted receiving room; lightweight separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element rigid |
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| 160 | T-junction with shifted receiving room; lightweight separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element elastic interlayer |
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| 161 | T-junction with shifted receiving room; lightweight separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element flexible |
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| 162 | cross junction; lightweight separating element; lightweight sending element; rigid receiving element; fourth element rigid |
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| 163 | cross junction; lightweight separating element; lightweight sending element; rigid receiving element; fourth element elastic interlayer |
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| 164 | cross junction; lightweight separating element; lightweight sending element; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 165 | cross junction; lightweight separating element; lightweight sending element; receiving element with elastic interlayer; fourth element flexible |
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| 166 | T-junction; lightweight separating element; lightweight sending element; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 167 | cross junction; lightweight separating element; lightweight sending element; lightweight receiving element; fourth element elastic interlayer (calculated as junction 20) |
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| 168 | T-junction with shifted receiving room; lightweight separating element; lightweight sending element; receiving element not available/not applicable; fourth element elastic interlayer |
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| 169 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; rigid receiving element; fourth element elastic interlayer |
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| 170 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element rigid |
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| 171 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element elastic interlayer |
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| 172 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element flexible |
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| 173 | T-junction with shifted sending room; lightweight separating element; sending element not available/not applicable; lightweight receiving element; fourth element elastic interlayer |
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| 174 | no flanking elements; rigid separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element rigid |
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| 175 | corner; rigid separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element not available/not applicable |
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| 176 | corner; rigid separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 177 | no flanking elements; rigid separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element elastic interlayer |
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| 178 | corner; rigid separating element; lightweight sending element; receiving element not available/not applicable; fourth element not available/not applicable |
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| 179 | corner; rigid separating element; sending element not available/not applicable; lightweight receiving element; fourth element not available/not applicable |
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| 180 | no flanking elements; rigid separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element flexible |
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| 181 | corner; separating element with elastic interlayer; rigid sending element; receiving element not available/not applicable; fourth element not available/not applicable |
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| 182 | corner; separating element with elastic interlayer; sending element not available/not applicable; rigid receiving element; fourth element not available/not applicable |
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| 183 | no flanking elements; separating element with elastic interlayer; sending element not available/not applicable; receiving element not available/not applicable; fourth element rigid |
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| 184 | corner; separating element with elastic interlayer; sending element with elastic interlayer; receiving element not available/not applicable; fourth element not available/not applicable |
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| 185 | corner; separating element with elastic interlayer; sending element not available/not applicable; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 186 | no flanking elements; separating element with elastic interlayer; sending element not available/not applicable; receiving element not available/not applicable; fourth element elastic interlayer |
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| 187 | corner; separating element with elastic interlayer; lightweight sending element; receiving element not available/not applicable; fourth element not available/not applicable |
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| 188 | corner; separating element with elastic interlayer; sending element not available/not applicable; lightweight receiving element; fourth element not available/not applicable |
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| 189 | no flanking elements; separating element with elastic interlayer; sending element not available/not applicable; receiving element not available/not applicable; fourth element flexible |
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| 190 | corner; lightweight separating element; rigid sending element; receiving element not available/not applicable; fourth element not available/not applicable |
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| 191 | corner; lightweight separating element; sending element not available/not applicable; rigid receiving element; fourth element not available/not applicable |
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| 192 | no flanking elements; lightweight separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element rigid |
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| 193 | corner; lightweight separating element; sending element with elastic interlayer; receiving element not available/not applicable; fourth element not available/not applicable |
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| 194 | corner; lightweight separating element; sending element not available/not applicable; receiving element with elastic interlayer; fourth element not available/not applicable |
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| 195 | no flanking elements; lightweight separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element elastic interlayer |
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| 196 | corner; lightweight separating element; lightweight sending element; receiving element not available/not applicable; fourth element not available/not applicable |
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| 197 | corner; lightweight separating element; sending element not available/not applicable; lightweight receiving element; fourth element not available/not applicable |
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| 198 | no flanking elements; lightweight separating element; sending element not available/not applicable; receiving element not available/not applicable; fourth element flexible |
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| 199 | thickness change; separating element not available/not applicable; sending element with elastic interlayer; receiving element with elastic interlayer; fourth element not available/not applicable (no invoice) |
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| 200 | thickness change; separating element not available/not applicable; lightweight sending element; lightweight receiving element; fourth element not available/not applicable (no invoice) |
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| 201 | Separating element decoupled, rigid corner with shifted receiving room, only path Ff |
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| 202 | Separating element decoupled, rigid corner with shifted sending room, only path Ff |
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| 999 | User defined junction (see User defined vibration reduction index) | User defined junction |