There are only a couple of occasions that iron pipe be used underground any more! Times are changing and things are getting better all the way around! polyethylene is the new and improved and is your best bet to a safe and reliable underground fuel line.The minimal burial depth should be no less than 18" from top of finished grade. This is also the same for iron pipe but rest assured that your poly pipe will not rust like the iron pipe will. It comes in all sizes and lengths and should be used for all applications. Fire pits, BBQ's, detaches garages, or pool heaters!
We have installed lines that are up to 300' from the meter with no problems at all running on 2 lbs of pressure. Questar will only increase your gas pressure if you meet their specific guidelines. One of which, you must consume OVER 701 Cubic Feet per Hour. This includes all of your existing appliances and also your new appliances, say like for a new pool. BE FOR WARNED! If you are building a pool in Utah, be sure to get a FREE pre-evaluation from questar gas company to let them check your meter and fuel line size from the main in the road to make sure you will be OK with fuel pressure and volume of natural gas. Make sure this is installed by a licensed PLUMBER OR HVAC CONTRACTOR! They are the only ones that are officially licensed to install underground gas pipe! An R.M.G.A certification is not a license to install gas pipe! We are fixing many of these that people think they know what they are doing and don't! Be sure your not had by this!
This underground fuel line must be buried 3' on a parallel of any electrical and may NOT be put in the same trench as electrical! There are certain cases of where the city official may approve it if it needs to be in the same trench. Water is OK to be in the same trench! If you will be coming up through concrete, you will need to sleeve the gas pipe from the concrete.
Also ,don't forget to install your tracer wire! International fuel code states that this wire be no less than 14 gauge and buried separate from the gas line with 2" of earth separating the two.
BE FOR YOU DIG ANY TRENCHES BE SURE TO CALL BLUE STAKES AT 1800-662-4111! This service is free and could save you hundreds of bucks! Be sure to call them 2 working days before you dig to give each utility company time to mark their lines! If you have any questions on depths, sizing or codes, feel free to contact Jeramy at 435-229-9961
