Conduits

This section describes how to use conduits.

Common Conduit Information

The values that can be specified for a conduit are listed below.

Group: The group to which the conduit is assigned. The group controls the layer on which the conduit is inserted. See the Conduit Groups section for more information on creating conduit groups.

Starting Elevation: The starting elevation of the conduit. The location of the starting elevation of the conduit is set by the vertical alignment. See the Elevation section for more information.

Ending Elevation: The ending elevation of the conduit. The location of the ending elevation of the conduit is set by the vertical alignment. See the Elevation section for more information.

Vertical Alignment: The vertical alignment specifies what location on the conduit the starting and ending elevations refer to.

Center of Conduit: The elevations refer to the centerline of the conduit. The conduit will extend both above and below these elevations.
Top of Conduit: The elevations refer to the top of the conduit. The conduit will extend below these elevations.
Bottom of Conduit: The elevations refer to the bottom of the conduit. The conduit will extend above these elevations. If the conduit has hangers, they will extend below this elevation.
Bottom of Hanger: The elevations refer to the bottom of the hanger for the conduit. The hangers and the conduit will extend above these elevations. If there is no hanger, the bottom of the conduit will be at these elevations.

Horizontal Alignment: The horizontal alignment specifies what the conduit construction line refers to.

Centered: The construction line is the centerline of the conduit. The conduit extends to both sides of the construction line. Any transitions in the conduit are concentric.
Flat on Left: The construction line is the left edge of the conduit. The conduit extends to the right of the construction line. Any transitions in the conduit will be eccentric, with the flat edge on the left.
Flat on Right: The construction line is the right edge of the conduit. The conduit extends to the left of the construction line. Any transitions in the conduit will be eccentric, with the flat edge on the right.

Shape: The shape of the conduit. The fields that are available for specifying the size of the conduit are based upon the shape that is chosen.

Round: The conduit will be round. Most conduits will be modeled using this shape.
Rectangular: The conduit will be rectangular. This shape can be used to model bus ducts.

Multiple parallel conduits can be modeled using the rectangular shape. The space that the conduits occupies can be blocked out with a single rectangular conduit. For collision detection, this limited detail is often all that is necessary to verify conflicts in the model.

Diameter: The diameter of the conduit, in inches. This size should be the actual exterior dimensions of the conduit, not the trade size. The exact value is used to draw the conduit for collision detection purposes. This field is used if the shape is set to round.

Width: The width of the conduit, in inches. This size should be the actual exterior dimensions of the conduit. The exact value is used to draw the conduit for collision detection purposes. This field is used if the shape is set to rectangular.

Depth: The depth of the conduit, in inches. This size should be the actual exterior dimensions of the conduit. The exact value is used to draw the conduit for collision detection purposes. This field is used if the shape is set to rectangular.

Radius Criteria: How the size of the radius for conduit bends will be determined. The choices depends upon the shape of the conduit.

Round Conduit

Based Upon Conduit Size (NEC Table 2): When this selection is chosen, the conduit bend radius will be based upon the size of the conduit. NEC Table 2 is used to choose the radius of the conduit bend.
Custom Size: The conduit bend radius is specified in the Custom Radius field.

Rectangular Conduit

Based Upon <1/2" to 6"> Conduit (NEC Table 2): The conduit bend radius is based upon the chosen size and NEC Table 2. A selection for each size in the table is included. This choice is useful when using a rectangular conduit to model a run of parallel conduits.
Square Elbow: The conduit bend is a square elbow, and not a bend.
Custom Size: The conduit bend radius is specified in the Custom Radius field.

Custom Radius: The radius of the conduit bend, in inches. This field is enabled if Custom Size is selected from the Radius Criteria pulldown menu.

Layer System: See the Layer System section for more information.

Hanger Type: The type of hanger. Controls whether hangers are included and their graphics.

None: No hangers are included. The other hanger fields will be disabled.
Wrap: The hanger will wrap around the item. A single support rod will be inserted in the middle of the item.
Trapeze: The hanger will be a support underneath the item with two support rods on either side.

Size: The size of the hanger, in inches. The size is used to control most of the dimensions of the hanger graphic. The support rod diameter will be equal to the size. Other dimensions will be scaled based upon the size.

Hanger Depth: The distance the hanger extends below the item, in inches.

Starting Offset: The distance from the start of the centerline to the location of the first hanger, in inches.

Ending Offset: The distance from the end of the centerline to the location of the last hanger, in inches.

Spacing: The distance between hangers between the first and last hanger, in inches.

Left Width: The distance the hanger extends to the left side of the centerline, in inches.

If the value is 0, the hanger will be wide enough to support the item.

If it is greater than 0, the hanger will extend exactly that distance to the left of the centerline. It is possible this distance will be less than the width of the item it is support. In that case, you need to increase the width. A width greater than necessary to support the specific item can be used to support a rack of items or to allow for future expansion.

Right Width: The distance the hanger extends to the right side of the centerline, in inches.

If the value is 0, the hanger will be wide enough to support the item.

If it is greater than 0, the hanger will extend exactly that distance to the right of the centerline. It is possible this distance will be less than the width of the item it is support. In that case, you need to increase the width. A width greater than necessary to support the specific item can be used to support a rack of items or to allow for future expansion.

Ending Elevation: The elevation where the support rods end. The support rods will be drawn from the item up to this elevation. See the Elevation section for more information on specifying this elevation.


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