Gas pipe sizing

[bster]

also.........dont forget the allowed installation pressure drop that must be divided and converted to an equivalent length!

 

[chr15]

everyone knows something but nobody knows everything, i think, I'm confused know or is that now

ps - edited my last post

Yeh-well I hope when you become an RGI that your spelling gets better cos we do have to fill out forms and stuff you know-or you could always look in a dictionary if you're not sure....

 

[chr15]

also.........dont forget the allowed installation pressure drop that must be divided and converted to an equivalent length!

Or put simply-dont forget to allow for tees,elbows and bends.

 

[baxpoti]

Actual- I know about elbows and tees and stuff but i'll work them out after

After
Uh... how?

 

[chr15]

Actual- I know about elbows and tees and stuff but i'll work them out after

After
Uh... how?

Errrr after I get a sensible answer to the origional question I asked.

 

[bster]

also.........dont forget the allowed installation pressure drop that must be divided and converted to an equivalent length!

Or put simply-dont forget to allow for tees,elbows and bends.

Or put simply ...dont forget the permissable drop allowed from the meter to the inlet of a gas appliance AND the equiv length due to fitting\bend restrictions.

2 different calculations mate.

 

[kevplumb]

AND the equiv length due to fitting\bend restrictions.

exactly bster

so how do you work it out without allowing for the fittings

 

[chr15]

also.........dont forget the allowed installation pressure drop that must be divided and converted to an equivalent length!

Or put simply-dont forget to allow for tees,elbows and bends.

Or put simply ...dont forget the permissable drop allowed from the meter to the inlet of a gas appliance AND the equiv length due to fitting\bend restrictions.

2 different calculations mate.

Yes but they both go hand in hand ..........mate. And by the way,you cant stay a 'newbie' forever you know.

 

[bster]

Kev: wrote

so how do you work it out without allowing for the fittings

where you talking to me

 

[kevplumb]

no the allowance for fittings is how you get your calculated lengh

you can't work them out afterwards it was a backhanded comment to make a point to the OP

 

[chr15]

no the allowance for fittings is how you get your calculated lengh

you can't work them out afterwards it was a backhanded comment to make a point to the OP

Yes but if you read the OP you would see that it said approx 20 metres and when I said after I meant after I get the origional question answered which doesnt look likely now seeing as no-one seems to know-if its that you just calculate the whole of the gas appliances then why dont you just say instead of arguing about the pipe length.

 

[kevplumb]

because dear boy its all relavent

the load on the supply
the lengh of pipework
the number of fittings

 

[chr15]

because dear boy its all relavent

the load on the supply
the lengh of pipework
the number of fittings

Why thank you kind sir,its a while since i been called a boy,but as I keep saying,I didnt ask about the pipe size so why are you still going on about it,I asked about relevant gas appliances being taken into consideration in relation to where the supplies are starting from,the appliances and their heat inputs are also relevant-and you cant work out the pipesize without that,so, thats goes back to the origional question.

 

[fitz1]

you are now alowed 2 mb drop instead of 1 mb

 

[chr15]

you are now alowed 2 mb drop instead of 1 mb

Well thats the first bit of useful info i've had since this post started,didnt know that, thanks.