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running a parallel gas line from a meter or upgrading existing gas line for new

running a parallel gas line from a meter or upgrading existing gas line for new


  #1  
Old 11-11-13, 06:16 PM
B
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running a parallel gas line from a meter or upgrading existing gas line for new

I'm adding more gas appliances, gas range and gas fireplace.
- existing furnace: 100K BTU / 3/4" pipe 30' from a meter
- existing water heater: 40K BTU / 1/2" pipe 15' from a furnace
- new gas range: 65K BTU / 40' from a meter / 10" from a furnace
- new gas fireplace: 40K BTU / 60' from a meter / 20" from a gas range

existing gas line: Meter(3/4") -----(3/4" 30')----- Furnace ----- (1/2" 15') ----- WH

My problem is that the existing pipe, 3/4", from meter to the house is not big enough for supporting additional gas appliances based on natural gas pipe sizing chart. Therefore, I'm currently waiting that my gas company will upgrade the outlet pipe of the gas meter to 1". After that, I need to upgrade my house pipe line.

I'm thinking two options. Could you please tell me which one is better?
Of course, I'm open to any other options.

1. Run a parallel pipe line(3/4" or 1") from the gas meter to new gas range and fireplace
<pre>
Meter(1") --(T)---(3/4" 30')----- Furnace -----(1/2" 15')----- WH
|---(3/4" or 1" 40')----- Range ----(1/2" 20')----- fireplace
</pre>
2. Upgrade existing 3/4" pipe to 1" pipe up to Furnace and tee off the 1" to two 3/4". One 3/4" connects to Furnace and WH and another to gas range and fireplace.
<pre>
Meter(1") ----(1" 30')-----(T)--- Furnace -----(1/2" 15')----- WH
|---(3/4" or 1" 40')------- Range ----(1/2" 20')-----fireplace
</pre>
Any advice is appreciated!
 
  #2  
Old 11-12-13, 01:59 PM
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That might be a local code question.
 
  #3  
Old 11-12-13, 02:10 PM
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I know you'll jump all over this but no DIY should be sizing or install gas lines.
Not even legal in most places.
Gas company or a local plumber with a gas licensed should be doing it.
 
  #4  
Old 11-12-13, 05:07 PM
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In some places, the home owner can do plumbing as long as it's to code. The question is, what is the code?
 
  #5  
Old 11-12-13, 11:06 PM
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Thank you all for your responses.

correction on option 2: new line is 10' not 40'
<pre>
Meter(1") ----(1" 30')-----(T)--- Furnace -----(1/2" 15')----- WH
|---(3/4" or 1" 10')------- Range ----(1/2" 20')-----fireplace
</pre>

While I was getting the permit for extending my gas line, I was told that a homeowner could do that. I just need to pass two inspections.
Also, I had to provide the pluming plan and they issued the permit based on the plan (option 2).
However, I learned later that I could run a new line from a meter (option 1) while I was talking to the gas company. That's why I posted here which option is easier.

Regarding the gas pipe sizing, there are good examples.

http://www.cityofpleasantonca.gov/pdf/bldg-gaspipe.pdf
http://www.ci.newark.ca.us/images/up...llationnew.pdf
 
 

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