Running a gas pipe HORIZONTALLY in a dot and dab wall

[AlexGas]

Here it is, from the BS 6891:

8.9 Pipes in walls

8.9.1 Pipe runs
Installation pipe shall, where possible, be vertical and shall be placed in ducts with convenient access points or placed in pipe chases.
The installation pipe shall be secured and have as few joints as practicable.

COMMENTARY AND RECOMMENDATIONS ON 8.9.1
Typical methods of installing pipes in walls are shown in Figure 6.

8.9.2 Cavity walls
Installation pipes shall not be placed within the cavities of cavity walls. Every pipe passing through a cavity wall shall take the shortest practicable route and shall be sleeved (see 8.10).

8.9.3 Dry lined walls

Installation pipes installed behind dry lining shall be suitably encased by building material.

COMMENTARY AND RECOMMENDATIONS ON 8.9.3
For typical examples see Figure 6b) and Figure 6c).

 

[AlexGas]

Where possible...
So, feel free!

 

[stratplus]

The diagrams referred to in 6871 only show vertical pipe runs. No mention of horizontal.
Corgi book says horizontal pipe runs should be avoided.

 

[stratplus]

What a pavlova!

 

[stratplus]

"where possible". Site plumbers usually on price so "which is the quickest".

 

[tamz]

You don't run them horizontally if it can be avoided but if it can't be avoided then you run them horizontally :smile:

 

[Riley]

One of those stupid "engineer on sites call" isn't it. Ambiguous at best. Ugh

 

[stratplus]

You don't run them horizontally if it can be avoided but if it can't be avoided then you run them horizontally :smile:

Conclusion as above.
Thanks all for your input.

 

[Reg Man]

Lets summarise: Perfectly simple, Only run pipes vertical. There is no excuse for making life easy or getting it done cheaper, but some circumstance's horizontal partial runs may be unavoidable.