Overflow Route drawing tool
This tool,
, is used to draw lines or poly-lines in the the Main Window, representing the paths of overflows from pits and detention basins to downstream pits and nodes, or those going out of the system. It is also used to define flow paths or storage routing reaches in a RAFTS storage routing model.
When you click on this tool, the arrow cursor changes to a pencil. Click the point of the pencil cursor on the node or pit from which the overflow route originates. The route will appear as a dotted line when you move the pencil. The first time you select this tool in a session, there will be a message advising you to draw the route in segments using the usual left mouse button, and to complete it with a right-click on the receiving node.
Poly-lines are used to prevent overland flow paths between two nodes or pits coinciding with a pipe between the same components.
If the upstream node is a detention basin, the overland flow path data will be assumed to include the relationships governing high-levels overflows from the basin. You can have two or more high-level outflows from a detention basin.
(You can enter several routes without having to refer back to the Toolbar or Draw menu by holding down the shift key as you click. If you enter a route by mistake, hold your pointer at some place along it, press the right mouse button to open a small menu, and select Delete to get rid of it.)
To enter data, right-click the object while holding the mouse pointer on a point along the route to open a small menu. Selecting Edit Data from this opens the Overflow route property sheet.
Related Articles
Headwall drawing tool
This tool, , allows you to draw a headwall in the Main Window. When you click on this tool, the arrow cursor changes to a pencil. Click the cursor on the point where the headwall is to be inserted, and the headwall symbol will occur. To enter data, ...
Culvert drawing tool (obsolete)
This tool has been discarded by DRAINS, and will only appear if it is part of a model created before November 2012. It has been replaced by the combination of a headwall, pipe and overflow route When you right-click this culvert object, a small menu ...
Detention basin drawing tool
This tool, , allows you to place a detention basin in the Main Window. When you select it, the arrow cursor changes to a pencil. Right-click your mouse to place a detention basin where you wish to locate it. The detention basin symbol will appear. To ...
Overflow route property sheet
This is used to define the hydraulic characteristics of the flow paths along which overflows from pits, headwalls and detention basins may flow. It takes different forms depending on the type of node from which the route comes, and on the options ...
Overflow route characteristics calculator
After a DRAINS run has been made, and peak flowrates and hydraulic grade line levels are displayed in the Main Window, it is possible to examine the flow characteristics of overflows from pits and detention basins in the page of the Overflow Route ...