Elbow

Based on start shape of segment, a route can have three possible elbow scenarios as listed below.

Rectangular start

Auto-fitting default behavior for routes starting with rectangular shaped segments.

Rectangular elbow scenarios.

Fig ID	Transition to Shape	Change Size/Justification	Auto-Placed Fitting [catalog item name]
1	Rectangular	No	Rectangular elbow [DefaultRect]
2	Rectangular	Change only one size property (width/height)	Rectangular reducing elbow [DefaultRect]
3	Rectangular	Change both size properties (width/height) and justification	Rectangular reducing elbow [DefaultRect] Symmetric rectangular transition [centric reducer]
4	Round	Diameter equal to width or depth	Rectangular elbow [DefaultRect] Symmetrical rectangular to round transition [RectToRnd]
5	Round	Diameter greater or smaller than width or depth	Rectangular reducing elbow [DefaultRect] Symmetrical rectangular to round transition [RectToRnd]
6	Oval	Change only one size property (width/height)	Rectangular elbow [DefaultRect] Symmetrical rectangular to oval transition [RectToOval]
7	Oval	Change both size properties (width/height) and justification	Rectangular reducing elbow [DefaultRect] Symmetrical rectangular to oval transition [RectToOval]

Round start

Auto-fitting default behavior for routes starting with round shaped segments.

Round elbow scenarios.

Fig ID	Transition to Shape	Change Size/Justification	Auto-Placed Fitting [catalog item name]
1	Round	No	Round elbow [DefaultRound]
2	Round	Change size and justification	Round elbow [DefaultRound] Round coupling [Default] Symmetrical round transition [centric reducer]
3	Rectangular	Change size and justification	Round elbow [DefaultRound] Symmetrical rectangular to round transition [RectToRnd] Connect point ID's reversed compared to rectangular to round transition scenario.
4	Oval	Change size and justification	Round elbow [DefaultRound] Round coupling [Default] Symmetrical round to oval transition [RoundOval] Connect point ID's reversed compared to rectangular to oval transition scenario.

Note: Round fittings by default, have male configured connection geometry. When two male fittings connect, a coupling component mates them together. For female configured connection geometry, an adapter fitting mates the two fittings.

Oval start

Auto-fitting default behavior for routes starting with oval shaped segments.

Oval elbow scenarios.

Fig ID	Transition to Shape	Change Size/Justification	Auto-Placed Fitting [catalog item name]
1	Oval	No	Oval elbow [DefaultOval]
2	Oval	Change size and justification	Oval elbow [DefaultOval] Oval coupling [Default] Symmetrical oval transition [centric reducer]
3	Round	Change size and justification	Oval elbow [DefaultOval] Oval coupling [Default] Symmetrical round to oval transition [RoundOval] Connect point ID's reversed compared to round to oval transition scenario.
4	Rectangular	Change size and justification	Oval elbow [DefaultOval] Symmetrical rectangular to oval transition [RectToOval] Connect point ID's reversed compared to rectangular to oval transition scenario.

Note: Oval fittings by default, have male configured connection geometry. When two male fittings connect, a coupling component mates them together. For female configured connection geometry, an adapter fitting mates the two fittings.