Gas pipe size calculation

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Gas pipe size calculation

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Adam1312

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Hi all!

I am looking to see if anyone uses a good gas pipe size calculation app!

I have been been plumbing and installing gas for over 12 years so obviously I know how to work it out long hand, I just want to see if any of these apps are worth the money to save myself time over the year!

Thanks
 
I like the GBgas.co.uk app works well once you get your head round the rubbishinstructions. I like longhand but sometimes if I'm just trying to show a customer why their gas is undersized it's a useful tool
 
Always the long way round !
Mear calculator !

Never been wrong in 28 years with those.
Some think they're old hat but I swear by em.

Pump sizes ( index circuit calcs).
Gas pipe sizes ( pressure drop )
Gallons per hour
Heat loss
Boiler size
All of it !
You need to use them along side a good brain and experience !
 
Last Plumber said:
Always the long way round !
Mear calculator !

Never been wrong in 28 years with those.
Some think they're old hat but I swear by em.

Pump sizes ( index circuit calcs).
Gas pipe sizes ( pressure drop )
Gallons per hour
Heat loss
Boiler size
All of it !
You need to use them along side a good brain and experience !
Click to expand...

you still got the old calcs?
 
I'm still in BThus and Fahrenheit !
If that's old
And still measure in feet and inches
 
Last Plumber said:
I'm still in BThus and Fahrenheit !
If that's old
And still measure in feet and inches
Click to expand...

I'm happy enough working in either imperial or metric. Can easily swap between the two. Except Fahrenheit. And pump pressure in psi does my head in!
 
croppie said:
You been watching The Matrix again?
Click to expand...

Lol. Red one is imperial blue metric and if you had been to school in the 60's you would understand fahrenheit but i admit although i know a boiler stat is 140 to 180 and 70º is pleasantly warm and some other stuff i've got to do the -32 x5 /8 thing as celcius is more in my head
 
Just learn the max flow rates for the pipe runs. Its only a couple of numbers but it saves you faffing about calculating anything. The numbers/tables are in your books but it is easy to remember a 30kw boiler will be fine on 20m (less fittings allowance) or 3m of 15mm.

Btw most apps use the equivalent length method of calculation which errs on the safe side as it is less than the tabulation method but it is all theory.
 
croppie said:
I'm happy enough working in either imperial or metric. Can easily swap between the two. Except Fahrenheit. And pump pressure in psi does my head in!
Click to expand...

I don't mind using Fahrenheit or Celsius cos i'm not as old as I sound but your right with the pump pressure. Always in Meters head or Kpa.
 
There's a long running joke on here about me being strictly commercial, John.

Hate domestic boilers with a passion

White boxed wall hung metrosexual tin foil crap!
 
Ha ha, well I do get you. I'm probably about 70% commercial.
It Is best by far.
Something you can get your teeth into and no carpets furniture etc and no half days spent as removal men
 
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