3D object is overlapping incorrectly

[APhillipsVUAUZ]

I have some pipe on some racks that are above a concrete pad. When using the Top down plan view the pad and pump bases will overlap the pipe. When I tilt the view just slightly it shows correctly? Send to back, send to front, nothing works here. 

[APhillipsVUAUZ · Accepted solution]

I believe i have narrowed it down. All of the 3d solid blocks i insert are overlapping in this drawing, secondly when i change the visual style for the whole drawing from say 2d wireframe to 3d conceptual everything EXCEPT my piping changes. The piping visually stays 2d and this gets hidden by all the 3d objects.

However in any view other than top down plan view all the pipe displays in 3d correctly.  

[APhillipsVUAUZ · Accepted solution]

I found the solution in case someone comes here looking in display manager Model was selected Off for my pipe, fittings ETC.