You want a 150,000 BTU firepit? That's like a gas bonfire! Most gas fire pits I've seen are in the 30-50k BTU range, a few are 100k.
1/2" pipe run 55ft is good for about 70 cu. ft. / hour, assuming 2 PSI or less supply. At 1100 BTU per cu. ft., that will get you 77,000 BTUs, somewhere in the upper end of what I've seen for fire pits.
For 150,000 BTUs, you are going to need about 136 cu. ft. / hr so for 55ft you would need a 3/4" pipe, all the way back to your trunk line (I'm not counting your total demand on that trunk line)..
Answer from JRaef on Stack ExchangeVideos
You want a 150,000 BTU firepit? That's like a gas bonfire! Most gas fire pits I've seen are in the 30-50k BTU range, a few are 100k.
1/2" pipe run 55ft is good for about 70 cu. ft. / hour, assuming 2 PSI or less supply. At 1100 BTU per cu. ft., that will get you 77,000 BTUs, somewhere in the upper end of what I've seen for fire pits.
For 150,000 BTUs, you are going to need about 136 cu. ft. / hr so for 55ft you would need a 3/4" pipe, all the way back to your trunk line (I'm not counting your total demand on that trunk line)..
With 1/2 lb gas it will not be possible to support the fire pit you have in mind with 1/2" pipe. You can either repipe clear back to the meter with the right size of pipe or use bottle gas.
Hello all. I want to run a outdoor gas line from my house to a fire place and grill. its a 40' run from the gas line at the house to the fireplace the bbq would be in the middle.
The gas supply is its 3/4 iron pipe and was for a no longer used fireplace. Can I run a grill and out door fire place off that? would it help to go to 1" poly pipe? I am handy i understand how to run the lines I just dont know about the pipe sizing and capacity. Thank you for any advise
We are going to have a gas line run to our outdoor fire table which will sit on top of concrete that is yet to be poured. Was wondering if there’s a way for to me to put conduit in as the concrete will happen before a plumber is able to actually run the gas line. If so what kind of kind of conduit will work? If not possible, I will just run the line myself at least under the concrete and have the plumber hook it up when he gets time. What kind of line can I run underground and can it be same type of line run in my house or do I need to change the line type once it gets indoors?
Hi there r/homeimprovement, I am working on a big back yard redesign at the moment. The rear 50' or so of my back yard was being pretty heavily underutilized since I moved into my house two years ago. My fiancee and I are now working on redoing the yard so that the back area is a much more attractive space. We are going to put in an outdoor kitchen and a firepit in the area that was previously just a massive vegetable garden.
The previous homeowners had a 1/2" gas line buried along the fence almost all the way to the back area we are planning on putting the patio/ firepit/ kitchen area. Our goal is to have both an operational gas firepit as well as a built in gas grill near each other, just teeing off the same line. They realistically probably will not often be used simultaneously, however we want that functionality. The distance from the gas meter to the area we are going to be locating this all is around 125'.
My question is this: I already have a 1/2" line buried most of the way. I realize that may be too low of a flow over that much distance. Would it make any difference if I went from 1/2" to 3/4" for the final 30' or so of the run in smoothing the flow/ increasing the volume so that I would not need to dig up and replace the 1/2" line with 3/4", or would going that route net me almost no benefit? I've talked to a couple contractor friends of mine and I have gotten mixed reviews on whether or not that will do anything, I figured there had to be some experts/experienced folks around here who could give me a more definitive answer than they did.
Thanks, hopefully I described everything well enough to get an idea what the end game goal is.
I don't have a pipe sizing chart for underground gas line (assuming it's plastic pipe) and I don't know what the rest of the piping in your house is. But if we look at steel pipe, you will only be able to run about 30,000 BTU off of 125' of 1/2" steel pipe.
You should check what kind of tubing is buried and try and find a pipe chart for it. 'cause it could be more or less BTU depending if it's 1/2" ID or OD.
As for changing the last 30' to 3/4", you're thinking about it backwards. you can only get so much gas through the 1/2" unless you increase the supply pressure. so that will do nothing for you.
Also, read this for proper sizing: http://www.propane-generators.com/natural-gas-chart.php
I don't have my code book but half inch is going to be undersized. If you know the btu you will be able to size it properly but any future in my area has to be the same size as the largest part of the line so it would prob be one inch in that case. If i remember ill check my code and size it when i get home or to the shop. Do you have an idea of btu? Okay ive checked on half inch at 125 you are only good for 40 thousand but three quarter is up to 83 thousand if you want more then that it will have to increase to one inch. You said around 125' so if its actually over that the amount you can put on it will drop. If its 126' it goes to 150' in thecode so just a heads up. also that's in natural gas so if your propane it changes again