Attributes Tab

Pipe Shape

It has a pre-defined list of shapes.  Although shapes can be added to the list the pre-defined ones cannot be modified.

Dia/Height (in)

Enter the diameter of a round pipe in inches. If the pipe is not round, enter the height in inches.

Width (in)

Enter the Pipe width in inches. This field is only enabled when the Pipe Shape is not round.

Lt Side Slope - V fields

The approximate ratio of rise to run of the left bank of an open channel while looking from upstream to downstream.

Rt Side Slope - V fields

The approximate ratio of rise to run of the right bank of an open channel while looking from upstream to downstream.

Length

The length of the conduit from center of a drainage structure to center of a drainage structure in feet.

Length Status

The source used to find the conduit length (i.e. record drawings, as-built, TV inspection).

Slope %

Slope refers to the vertical displacement along the length of the pipe with respect to the horizontal displacement along the length of the pipe (otherwise known as the rise/run).  

If the US Invert and DS Invert on the Elevations Tab and Length field on the Attributes tab are filled out, this field will be autocalculated using the following formula.

[(US Invert - DS Invert) / Length] x 100 = Slope %

• If any of these three values do not exist in the record, a slope value can be manually without having to "lock" the slope.
• If the invert difference is less than three (<3), or the length is zero (=0), the slope is retrieved from the minimum pipe slope table.

Slope Lock checkbox

This box is automatically marked when users manually enter a slope in the Slope field.  Leave the checkbox marked to stop the slope from auto-calculating.

Manning's "n"

This refers to a value assigned to a pipe based on its interior roughness. This is used in the calculation of the pipe's capacity.

Capacity

Capacity refers to the maximum amount of flow the pipe is capable of holding (in cubic feet per second).

Multiple Conduit Checkbox

When this checkbox is marked, the system sums the capacity of all the conduits listed in the Multiple Conduits grid and populates the Capacity field with the total.

Subtype Text

This field is automatically populated if subtypes are defined in the GIS system. This field is only editable in a GIS geodatabase environment. The system is not integrated with GIS, this field will not be available.

Last Cleaning Date

Users enter the date that the conduit was last cleaned. This is used to calculate the Next Cleaning Date.

Cleaning Freq

Enter a number for how often the conduit should be cleaned. The amount of time this number represents is controlled by the Cleaning Freq Units.

Cleaning Freq Units

The amount of time represented by the number in the Cleaning Frequency. Click the field caption button or press F9 for the picklist.

Next Cleaning Date

Users can enter the next date that the conduit should be cleaned. If the Last Cleaning Date, Cleaning Freq, and Cleaning Freq Units fields are filled out, this will auto-calculate.