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Hey guys, I'm running gas to a pottery shed 125' from the gas in the lower level laundry room ( total of 190' from the meter) with low pressure. The meter MAOP is 5-psi, but I'm thinking I'm only at 6-9" WC.
I won 1000' of new 3/4 poly gas pipe for super cheap at an auction, and I'll be running this to the shed and using the rest as underground conduit for my other crazy projects. I figure 50,000 BTU's would be more than adequate to heat that shed space, and I figured 3/4 would suffice.
However, we might want a pool and/or hot tub out that way near the shed one day. So I'm considering pipe diameter in the case that we pull gas from the shed to a potential nearby pool/hot tub heater.
But I'm having a hard time understanding the BTU bottleneck and the correlation between psi, pipe diameter and volume. For example, if I run two 3/4 gas lines to the shed over that 125' distance, tee them together before running to the shed heater, would I increase BTU potential in the same way as if I ran 1 1/2 pipe diameter over that 125' distance?
I figure a future pool heater would add an additional 35' to the run from the shed, and I know hot tubs require quite the flow if you want to raise 20-30 degrees in an hour or so! So, would two 3/4 lines be appropriate? Or should I just bury one 3/4 to the shed and cross the whole pool heater pipe diameter bridge when I come to it? It's hard because I'll have the ground open...
I appreciate your thoughts!
I won 1000' of new 3/4 poly gas pipe for super cheap at an auction, and I'll be running this to the shed and using the rest as underground conduit for my other crazy projects. I figure 50,000 BTU's would be more than adequate to heat that shed space, and I figured 3/4 would suffice.
However, we might want a pool and/or hot tub out that way near the shed one day. So I'm considering pipe diameter in the case that we pull gas from the shed to a potential nearby pool/hot tub heater.
But I'm having a hard time understanding the BTU bottleneck and the correlation between psi, pipe diameter and volume. For example, if I run two 3/4 gas lines to the shed over that 125' distance, tee them together before running to the shed heater, would I increase BTU potential in the same way as if I ran 1 1/2 pipe diameter over that 125' distance?
I figure a future pool heater would add an additional 35' to the run from the shed, and I know hot tubs require quite the flow if you want to raise 20-30 degrees in an hour or so! So, would two 3/4 lines be appropriate? Or should I just bury one 3/4 to the shed and cross the whole pool heater pipe diameter bridge when I come to it? It's hard because I'll have the ground open...
I appreciate your thoughts!
