URGENT PLEASE HELP! what kind of pipelines are used in different areas

[knight92]

This is what I know

There are pipeline constructions types/classes A, B, C and D. The design factor for type A is 0.7.

So I want to know what is the design factor for B,C and D. Also what types/classes of these pipeline constructions are used in populated or remote areas or areas with rivers, mountains, train tracks. I am very confused as I am trying to do some research and came upon these types/classes so just trying to find out what these are and how they are used.

Thank you very much

[Redbelly98]

I don't know about pipeline designs, but please explain why this is so urgent. Is the urgency related to a deadline at your job, or something else?

[knight92]

I need to submit something tomorrow and did not see this bit before :(

[Redbelly98]

Is this an assignment for a class? You know where those are supposed to be posted, right?

[knight92]

well its not an assignment for school or anything. it was a group study thing with my mates..nevermind I got what I was looking for.