Internal Soil Pipe Query

[Internet Know How]

Hi All,

 

When running soil pipe internally in a new build, is it ok to use the Orange pipe which would normally be sold as an underground? I wasnt sure whether from a regs perspective there was any mandated type here

 

Thanks

 

C

[Big Jimbo]

I have used the orange internally before. Building inspector did not have a problem. They won't like you using the black stuff outside underground.

[Conor]

Yes, as long as not exposed to sunlight.

[Nickfromwales]

  On 09/03/2023 at 21:10, Internet Know How said:

Hi All,

 

When running soil pipe internally in a new build, is it ok to use the Orange pipe which would normally be sold as an underground? I wasnt sure whether from a regs perspective there was any mandated type here

 

Thanks

 

C

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I use it all the time on my projects, particularly the fittings, as there are many more variations available in the UG  ( under ground ) range.

[Conor]

  On 10/03/2023 at 01:33, Nickfromwales said:

I use it all the time on my projects, particularly the fittings, as there are many more variations available in the UG  ( under ground ) range.

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E.g. long radius / rest bends. And if you have leftovers you can use them underground, but not the other way round if you use black/grey stuff.

[Temp]

Isn't the underground stuff stronger but more extensive?

 

Not sure if you can solvent weld it?

[Internet Know How]

  On 10/03/2023 at 03:12, Temp said:

Isn't the underground stuff stronger but more extensive?

 

Not sure if you can solvent weld it?

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underground stuff seems cheaper

[Dave Jones]

building control should fail it. grey above only.

[dpmiller]

  On 10/03/2023 at 08:17, Dave Jones said:

building control should fail it. grey above only.

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It's not "above" if it's inside and not exposed to UV

[Nickfromwales]

  On 10/03/2023 at 01:51, Conor said:

E.g. long radius / rest bends. And if you have leftovers you can use them underground, but not the other way round if you use black/grey stuff.

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More like for the 15 and 30 degree, plus “adjustable” bends  

Above ground fittings only typically come in 135 degree ( aka ‘45’s ) which is a PITA. 

[Nickfromwales]

  On 10/03/2023 at 03:12, Temp said:

Isn't the underground stuff stronger but more extensive?

 

Not sure if you can solvent weld it?

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Done it plenty of times, just needs to be spotlessly clean and I rough it up with Emery cloth too. 
You don’t use glue for this, but instead use the proper ‘gap-filling cement’. Totally different beast. 
 

[Dave Jones]

  On 10/03/2023 at 08:29, dpmiller said:

It's not "above" if it's inside and not exposed to UV

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still fail them. remember common sense is never common when dealing with building control.

[Carrerahill]

  On 10/03/2023 at 09:38, Dave Jones said:

 

still fail them. remember common sense is never common when dealing with building control.

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Yet to see it.

 

Commercial projects that don't use cast ductile often use the terracotta stuff in basements and risers. 

[Nickfromwales]

  On 10/03/2023 at 09:38, Dave Jones said:

 

still fail them. remember common sense is never common when dealing with building control.

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Not had one argue the point with any of my jobs. The second you push back against a BCO they often just say "fine", unless it is a categoric blunder. 

[Dave Jones]

  On 10/03/2023 at 10:41, Nickfromwales said:

Not had one argue the point with any of my jobs. The second you push back against a BCO they often just say "fine", unless it is a categoric blunder. 

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all depends if its a warranty inspection as well. They very anal on those and getting worse as soo many warranty claims due to poor workmanship on the big sites.

[Nickfromwales]

  On 10/03/2023 at 10:56, Dave Jones said:

 

all depends if its a warranty inspection as well. They very anal on those and getting worse as soo many warranty claims due to poor workmanship on the big sites.

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Agreed, but they are looking at very different things these days.

[Internet Know How]

  On 10/03/2023 at 08:29, dpmiller said:

It's not "above" if it's inside and not exposed to UV

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Yes it will be inside and not exposed to UV so should not be an issue. I can always check with building control

[Nickfromwales]

  On 10/03/2023 at 11:47, Internet Know How said:

Yes it will be inside and not exposed to UV so should not be an issue. I can always check with building control

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They'll just tell you not to do it. They want a simple life.

[PeterW]

  On 10/03/2023 at 10:56, Dave Jones said:

 

all depends if its a warranty inspection as well. They very anal on those and getting worse as soo many warranty claims due to poor workmanship on the big sites.

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no they aren’t - warranty claims are down and NHBC aren’t paying out for a lot of issues that they used to. It’s an insurance policy and they will find every way not to pay. 
 

There is nothing in BS 13598 that states you cannot use the pipes above ground if adequately protected, nor in BS-EN 1329 or any of the others listed in Part H of the Building regulations as long as the pipe is manufactured within the standards. 
 

 

[Internet Know How]

  On 10/03/2023 at 10:56, Dave Jones said:

 

all depends if its a warranty inspection as well. They very anal on those and getting worse as soo many warranty claims due to poor workmanship on the big sites.

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Yes have warranty provider involved. Still same quality so I dont see why it would matter if this is all internal.