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AVEVA™ Diagrams

Dimensioning

  • Last UpdatedDec 01, 2022
  • 3 minute read

The HVAC dimensioning considers the shape factor as well as the dimension. The shape factor is stored in the Conarray attribute, and the dimension in Heightarray and Widtharray. In case a circular shape is used, the diameter is stored in the Heightarray.

When a branch shape is dropped on a drawing, the dimension will be picked up from the default dimensioning settings for the HVACline.

As HVAC fittings are added, they will pick up the dimension from the upstream component, provided that the Autoselect on Define default setting is True.

As can be seen in the picture above, the fittings will by default get the same dimension for arrive and leave. Please note that the CON1 & CON2 annotations do not reflect arrive and leave, but rather connection1 and connection2.

The behavior of the dimensioning during the creation of HVAC diagrams can be controlled through a number of default settings that can be found under General options > HVAC Dimensioning:

Default setting

Value

Description

Miscellaneous - Autoselect on define

True

The component will automatically obtain the dimension from the upstream component when defined (dropped onto a free connection).

False

The component will not obtain any dimension from the upstream component when defining.

Refit - Autofit on connect

True

The component will automatically obtain the dimension from the upstream component when being connected.

False

The component will not obtain any dimension from the upstream component when being connected.

Refit - Autofit on delete

True

The component following the one that is being deleted will automatically obtain the dimension from the upstream component.

False

The component following the one that is being deleted will not obtain any dimension from the upstream component.

Refit - Propagate autofit

True

Autofit should be propagated to downstream components.

False

Autofit should not be propagated to downstream components.

Refit - Propagate at segment

True

Autofit propagation will continue over segment limits.

False

Autofit propagation will not continue over segment limits.

Refit - Propagate at branch

True

Autofit propagation will continue over branch limits.

False

Autofit propagation will not continue over branch limits.

Resize - Propagate at segment

True

Resize propagation will continue over segment limits.

False

Resize propagation will not continue over segment limits.

Resize - Propagate at branch

True

Resize propagation will continue over branch limits.

False

Resize propagation will not continue over branch limits.

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