You can see that the baluster base is 100mm from the host and baluster top is set to the.
Revit understading roof base offset.
And element that is on or above this height will be drawn according to it object style.
Modifying revit roof slopes to change the roof from a gable roof to hip roof go into the sketch options select all boundary lines and turn on the defines slope parameter note as a default your roof will have a slope of 30 degrees on all boundaries and form a hip roof unless you change the slope designation in the sketch mode per boundary line.
Select the base and the top of your balusters.
For footprint roofs specifies a roof line to be a slope defining line.
To indicate that it should extend upward 4000 mm above level 2 specify an upper limit of level 2 and a limit offset of 4000 mm.
The parameters above top cut plane and bottom make up the primary range.
If you choose rafter the plate offset from base is measured from the inside of the wall.
Creating complex sloping roofs in revit 2014 roof junctions controlling roof slopes and levels.
To see the effects of this property more clearly set a value for plate offset from base other than 0.
Select the wall and use the attach top base button to attach it to the underside of only the 5 1 2 roof.
Defines roof slope.
It will join in the wrong order and you will need to use the drop down menu next to join to switch the join order.
Set base and top of the balusters.
As you may expect this is the height that revit will cut through elements ie windows doors etc.
If you choose truss the plate offset from base is measured from the outside of the wall.
Can be either the host or rails elements.
By default the limit offset is the distance between levels 10 or 4000 mm.
This is the absolute base of the primary view range.
Then from the modify tab on your ribbon use the join geometry command and select the 7 1 2 roof and the wall.
In the image below the red dashed line indicate the position of the balusters.
Then adjust the required offset from these elements.