pipeline problems

[diyas]

Hi everybody,
i have a situation:
created a pipeline everything ok, when drawing it on the profile view it lays on the bottom of profile!!!!
how can it be??is it normal????
please help me!
PS
not so far ago i've installed a SP2 for Civil 3D 2008

[brainman1000]

Check your pipe invert elevations. If they are at an elevation of 0 they will display as such in your profile.

[seven_tech]

Make sure you have a pipe rule set style set up. Also make sure you have applied the pipe rules to the network.

[Daniel.K]

Are you starting your pipe network at the beginning of an alignment? That can cause your pipe to be drawn at zero elevation.