This shape editing tools will not appear if you define the roof slope.
Revit roof shape editing.
By specifying the elevation of these points you split the surface into sub regions that can slope independently.
Modify the height of points to create the desired slope.
The shape editing tools were designed to allow for moderate slopes and in such cases variances in true thickness are trivial.
Revit structural project 08 roof 0pen web steel joist framing and modify grid duration.
However more significant slopes will increase this variance.
The shape editing tools display on the contextual tab.
These are available on flat slabs only.
After you finish creating the roof select it.
First activate add split line and draw the lines like below.
First select the roof.
In the example below we add a bunch of points and change their relative height with modify sub elements tool.
On this flat slab you add one or more points and then adjust the z height of those points.
In order to enable shape editing tools the following conditions must be met.
Floors and roofs that have been shape edited will not report a true thickness.
Revit will issue a warning when a slope significantly deviates from the expected thickness.
A roof cannot attach to another roof and the roof cannot be a curtain roof.
Add points manually or create them automatically with split lines.
Floors must be flat and on a horizontal plane.
An alternative way to apply slope to a roof or floor is the shape editing tools.
Use shape editing to add internal drains to the roof built using sloped insulation.
Revit structure you can use shape editing tools to manipulate the surface of a flat non sloped floor or roof by defining high and low points for drainage.
You will see shape editing tools from in your ribbon contextual tab.
Use pick supports to split the roof element at the supporting beams.