Utility Node - Manhole Options

Use these options to define utility network objects such as concentric and eccentric manholes. Manholes are circular and parametrically drawn and defined by a diameter and thickness. Manholes are primarily for gravity systems and have an invert elevation and a rim elevation.

  1. Diameter
  2. Thickness
  3. Distance to center
  4. Rim elevation (specified when manhole objects are created)
  5. Invert elevation (specified when manhole objects are created)

Figure: Manhole dimensions

Figure: Concentric manhole vs. eccentric manhole

Options

Name

This shows the descriptive name for the site improvement as it will appear in various commands that use utility nodes. These names should generally include size information to make object types easier to distinguish from each other.

Utility type

Select a Type for the network you will use this node in; it will not appear as an option for other types of networks.

  • Gravity - Select this if you plan to create a sanitary sewer, storm sewer, or other non-pressurized system that relies on gravity to move liquids.
  • Pressurized - Select this if you plan to create a water, gas, or other system that relies on pressure to move liquids.
  • Cable - Select this if you plan to create an electrical, telecommunications, cable television, or other system of cables (which may be inside conduit pipes).
Class

Enter the industry type or rating of the manhole (e.g., pressure or thickness).

Diameter

Enter the distance from the inner edge to the inner edge of the manhole.

Thickness

Enter the wall thickness of the structure.

Color

Select a default display color for the manholes as you want them to appear in graphic views. This can be changed in the properties for each object once they are created in your model.

Cost

Enter the procurement cost of the manhole per unit.

Note: This program displays the currency symbol and format that you have set in Microsoft Windows® Regional and Language Options. The units and calculations, however, are not associated with a specific currency, so if a project is opened on a computer with different regional settings, those currency symbol and formats are used, but no conversion between currencies has been made.

Entrance on center?

For manhole entrances that are eccentric, uncheck this box and specify the distance from the node to the entrance.

Distance to center

If Entrance on center is unchecked, specify the distance from the node to the entrance.

Note: No angle is specified in this site improvement definition. An orientation is set when the node is created.

Inspection criteria

Inspection criteria is currently not implemented.

Related topics

Create Utility Site Improvements

Working with Site Improvements

Create and Edit Site Improvements