LPG pipeline estimate

Is it elevated, or buried?

Here are a few things to consider (not necessarily in order)

• Feasibility Study
• Routing Studies
• Property Searches
• Right-a-way Planning
• Local, State, Province and Country Code Applications
  
• Right-a-Way Approval
• Right-a-Way Permits
  
• Right-a-Way acquisition
• Geographic Profile Study
• Hydraulic Analysis
• Primary (Start Point) Pump Station Layout
• Start Point Pig Launcher
• Start Point Meter Station and Meter Provers
  
• Intermediate Pump Station(s) analysis (possible additional Pumps Pig Receivers and Pig Launchers)

• Preliminary Material Estimate, Pipe, Pumps, Drivers, Valves, etc
• Preliminary Estimate of Construction Costs
  
• Cathodic Protection requirements Study
• Soil Corrosion Analysis
• Road and Highway Crossing Study
• Water Way (River & Stream) Crossing Studies
• Road and Highway Crossing Permits
• Water Way Crossing Permits
• End Point Meter Station and Meter Provers
  
• End Point Pig Receiver Station
• Pipeline Security facilities
• Pipeline Operation Philosophy Study
• Pipeline Instrumentation plan (SCADA)
• Pigs (Purchase or Contract a Service as required)
• The ten other items I have forgotten that will jump up and bite you in the pocket book for another 10% of Cost
  

Question is incomplete witout giving ANY information like, size, flow rate, pressure, length, no of service points , end use etc. I suggest you to hire a consultant for this job.

Check out this link. For some good information on a pipeline project.

http://www.woodgroupindia.com/ggl/5/VOLUMEIIOFII-Technical.pdf