Pipe data base property sheet
This window allows you to set up or review a pipe type and individual pipe sizes.
From this main window, the following pipe type dialog box can be opened by clicking the Add or Properties buttons in the upper part of the dialog box.
It is necessary to input the following information that can be taken from technical sources such as product manuals. The data to be entered is:
the name of the pipe type (material, class, etc.),
the minimum cover associated with it,
its Colebrook-White and Manning’s roughnesses, and
whether the pipe is circular or rectangular.
After choosing a pipe type, you can enter or review diameters using the Add and Properties buttons in the lower part of the dialog box. This will open the following additional dialog box for a circular pipe:
You need to add the dimensions required. Note that you can exclude a diameter from design calculations by clicking on the box labelled Not available for selection in design run. This allows you to set a minimum pipe size, while still including existing pipes that are smaller or are not available commercially as new pipes.
The last two items. the minimum slope and the trench width, are recent additions to this sheet. They allow different minimum slopes to be applied to different pipe diameters, and enable the trench width to be specified by users.
The dialog box for a rectangular pipe is similar.
You can use the Delete Pipe Type and Delete Pipe buttons to remove superfluous data, but not while a drainage system is present in the Main Drawing Window. DRAINS prevents changes because it may delete pipe types used in a particular system. To delete material, you must close any drainage system in the Main Window.
(At present, it is not possible to delete pipe types associated with a pipe system established in a DRAINS .drn file, although new pipe types can be added and assigned to existing pipes. When a new drainage system is created, it takes the pipe types specified for the general system, coming from the Drains.db1 file in the C:\Program Files\Drains\Program or the C:\Program Files (x86)\Drains\Program folder.)
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