G3 Building Regs

[Daren]

Building regulation G3 states that the discharge from the pressure relief on an unvented cylinder needs to go to an external waste, what date did this come into force for?

 

[BLOD]

Is this homework /revision ?
It might be more useful to you if you look it up in a book rather than just ask for the answer :smile5:

 

[samh]

Should be in here Planning Portal - Approved Document G

 

[Deleted member 25704]

Any chance of coming back to us on this to explain?

 

[Daren]

Just wanted to know the date it was introduced

 

[kirkgas]

where have you seen it written that it must go to a waste

 

[warrington]

It doesn't need to go to a waste. Check G3 3.62 b

 

[moogwai]

I thought it just had to terminate in a place where it wont cause any problems with safety as the water will be blinking hot and no one would want that fired at them.

Sent from my MB526 using Tapatalk

 

[fuzzy]

as far as im aware it can terminate near floor level or even high if turned back into wall

 

[SimonG]

Within 100mm of finished floor, not too sure about returning to wall, internally it can go to waste through hepvo but we were told to ok it first with building control. Didn't really understand that bit though because if it's in the regs to do that why do you need to check with building control?

 

[PlumbBobBob]

probably to make them feel important. also if the discharge pipe is at floor level it needs mechanical protection i.e cage around it

 

[Daren]

Thanks for all responses, even the sarcastic one at the start..!! Just trying to get different opinions from a consultants badly specified drawing.

 

[mikegas]

Within 100mm of finished floor, not too sure about returning to wall, internally it can go to waste through hepvo but we were told to ok it first with building control. Didn't really understand that bit though because if it's in the regs to do that why do you need to check with building control?

i think its because you have to show its not practical to do it any other way same with turned back into wall i think you can only do this as a last resort

 

[PlumbBobBob]

is the consultant qualified to correctly specify unvented controls and safety devices

 

[kirkgas]

is the consultant qualified to correctly specify unvented controls and safety devices

he doesnt need to be, as there will be a tiny disclaimer on the design somewhere saying "dimensions and spec must be confirmed as adequate and complies with current legislation, by a competant person"

 

[PlumbBobBob]

ar yes the ever present small print ​lol

 

[BLOD]

Thanks for all responses, even the sarcastic one at the start..!! Just trying to get different opinions from a consultants badly specified drawing.[/

Wasn't trying to be sarcastic just thought you might have been a student looking form easy answers - my bad!

My understanding is the discharge point can be at high or low level but offer no danger to anyone.
It can be fed into the soil but only with local authority approval.
If possible has to be visible at tundish and termination point.
Pipework has to be sized to carry full bore release away without backing up

 

[Daren]

Thanks. Aware of all that. Just that I have an install where consult says to go onto existing discharge point but it's not correct. Can't get correct drop and discharge doesn't terminate to safe place, therefore just thinking about what date regs came in as original instal wrong.

 

[BLOD]

If its a new install surely it has to comply with current regs ?

 

[kirkgas]

Thanks for all responses, even the sarcastic one at the start..!! Just trying to get different opinions from a consultants badly specified drawing.[/

Wasn't trying to be sarcastic just thought you might have been a student looking form easy answers - my bad!

My understanding is the discharge point can be at high or low level but offer no danger to anyone.
It can be fed into the soil but only with local authority approval.
If possible has to be visible at tundish and termination point.
Pipework has to be sized to carry full bore release away without backing up

should say "or"

 

[Daren]

Exactly

 

[kirkgas]

Thanks. Aware of all that. Just that I have an install where consult says to go onto existing discharge point but it's not correct. Can't get correct drop and discharge doesn't terminate to safe place, therefore just thinking about what date regs came in as original instal wrong.

doesnt really matter about original install not being right, as long as you know ot to connect onto it as it would then make your install illegal, wish i had £1 for everytime i have heard, "but i just reconnected it the same way it was in, so its not my fault"

 

[Daren]

Totally agree. Just wondered if anybody new exact date regs came in so I can pass back to consultant

 

[BLOD]

should say "or"

My book says "have discharges visible at both tundish and final point of discharge, unless practically difficult".

Maybe this has changed now?

 

[AWheating]

april 2010
http://www.planningportal.gov.uk/uploads/br/100312_app_doc_G_2010.pdf

it clearly states the accepted ways of terminating a discharge pipe and the requirements needed if into any wastes system.

i think building control is consulted over wastes termination because many waste systemc cant cope with the temps and you may have to prove that the waste you are connecting to is designed for high temps and the only reasonable route.

 

[AWheating]

many discharges are terminated over footpaths by front doors which is wrong as if it runs in winter and then freezes then it will cause a danger, so its best to have either a drain or soft ground/gravel below away from slabs.

 

[samh]

You do also want it away from where its likely to land on people, as someone previously said the water will be hot, so either low down or away from a spot people regularly walk along or stand around.

 

[kirkgas]

My book says "have discharges visible at both tundish and final point of discharge, unless practically difficult".

Maybe this has changed now?

my new bpec training book has it as either or