Pile symbols not plotting

[Anonymous]

Hello there,

when I place the standard revit pile (without cap) in the project (Revit 2018) I can see the symbol on my reflected floor plan (looking up from Pile depth to bottom (P=0)). Once I'm moving the screen, the symbols are disappearing, and when I stop moving the screen, the symbols are appearing again. When I plot the drawing the symbols are not showing up! Weird thing was when I exported the sheet to AutoCAD, the symbols did show up.

The piles are placed 20mm into a floor or structural foundation, see attached image. And for testing I even placed them way up high and low, but still the problem persist.

I don't know where to look anymore. I checked so many options, but still no success. So any help is appreciated! =D

[cbcarch]

As a quick test:

If you create a PDF, do they show up? If so, plot from PDF?

[Anonymous]

nope, when in preview, pdf or actually plotting, they're not showing up

[Anonymous · Accepted solution]

Oh wow! After looking for a solution for nearly 4 hours I figured it out. Every pile had a specific material assigned to it. When changing it to <by category>  everything went back to normal. Don't know why this material caused the problem, but this helped.