You can use the add point tool to add singular points to the element geometry.
Modifying points in revit for roof plan.
Draw the arrow then click it and change the properties to select the right levels and offsets.
Click modify floors tabshape editing paneladd point.
Click on each roof edge line to change the linetype.
Revit displays the modify linework contextual ribbon.
Edit the roof sketch.
This video shows you how to add a split line and a point to a flat roof so that you can edit the roof to allow for drainage channels gulleys.
This makes the roof line visible in the plan view but the lines appear as solid lines.
Add a negative value to the middle points and a slope is created.
If you found t.
Select the roof and click modify roofs tab mode panel edit footprint or edit profile.
If you select relative new points will be.
The elevation edit box displays on the options bar with a relative check box next to it.
Some typical scenarios are the include the outline of the perimeter of the roof the outline of an entrance canopy roof light positions etc.
The tail is the low point and the head is the high point.
Select the floor or roof to modify.
In the example below we add a bunch of points and change their relative height with modify sub elements tool.
Select the desired linetype from the line style type selector.
This create an uni directional slope parallel to the arrow.
Select your flat roof press the modify sub elements button that appears.
Select the linework tool in the view panel on the home ribbon.
Use the modify sub elements button to select your newly placed points.
We could of course just draw these on the appropriate floor plan views using detail lines which would certainly get the job done.
Make sure define slope is inactive and that the arrow lies on the boundaries.
If you want to change the position of the roof use the properties palette to edit the base level and offset properties to change the position of the reference plane.
Add a negative value to the middle points and a slope is created.