MDPE Protection

[cosmarchy]

Hi,
I need to install a run of MDPE from inside to outside up to the water meter running under a suspended timber floor which will eventually replace a piece of lead pipe.

I understand it needs to be a minimum of 750mm below the ground level and I'm looking for advice on insulation and protection.

The ground under the timber floor is rough soil with some building debris (rubble, odd shard of glass, flint etc) so I'm looking for recommendations for protection and insulation. As the pipe has to be partially buried at the point at which it passes through the outer wall in order to achieve the 750mm depth, I'm looking for a ducting and insulation. Can anyone recommend something they've used before? Is the insulation and ducting purchased separately or together?

As the ground is full of debris, it would be necessary to continue the pipe to its final destination in the ducting / insulation as this will also provide mechanical protection from the ground too.

Any ideas of ducting and insulation would be appreciated.

Thanks

 

[Exedon]

We use the INSUduct system to bring water services into buildings less digging and ducting.
I'd be looking to take pipework tight under floor joists suitably insulated.
Wouldn't use mdpe internal would swap to correct sized mlcp.

 

[Madrab]

Min trench depth in 750mm. Entry point into a property needs to be ducted, insulated and screened. As suggested there are other options like 'Insuduct' available when breaching the properties wall.

Just look up building/water regs and it should show you. These standards are for a normal underground pipe entry.

First one I found - https://seswater.co.uk/developers/new-connections/-/media/b7da32eb1dce47798829364e4f17adab.ashx

 

[cosmarchy]

We use the INSUduct system to bring water services into buildings less digging and ducting.
I'd be looking to take pipework tight under floor joists suitably insulated.
Wouldn't use mdpe internal would swap to correct sized mlcp.

Min trench depth in 750mm. Entry point into a property needs to be ducted, insulated and screened. As suggested there are other options like 'Insuduct' available when breaching the properties wall.

Just look up building/water regs and it should show you. These standards are for a normal underground pipe entry.

First one I found - https://seswater.co.uk/developers/new-connections/-/media/b7da32eb1dce47798829364e4f17adab.ashx

unfortunately the insuduct wouldn't work in this instance as I dont have enough wall space to install.

I did find the SES Water pdf and my situation is much like diagram 3 but I have approximately 6 to 7 meters of travel internally over rough ground hence the ducting.

I have found various ducts and insulation but am a but unsure as to installation. Given the nature of MDPE and its rather inflexible nature, I'm guessing rigid insulation would be a pain to install???

With 25mm pipe and 63mm ducting, am I looking for insulation to fill the ducting? How easy will it be to insulate the pipe and push through the duct?

 

[Madrab]

You can get specific insulated ducts for every size of MDPE. Shallowduct is the one I used to use for 25/30mm MDPE, from the same people that produce the Insuduct.

Not sure what you mean, MDPE is relatively flexible?? It comes in loops?

 

[cosmarchy]

You can get specific insulated ducts for every size of MDPE. Shallowduct is the one I used to use for 25/30mm MDPE, from the same people that produce the Insuduct.

View attachment 400335

Not sure what you mean, MDPE is relatively flexible?? It comes in loops?

View attachment 400334

"relatively inflexible" in that it tends to coil back up and doesn't particularly hold straight in order to get rigid insulation on and shove down ducting.

Not sure whether something like hot water will make it flexible enough to lay out without it trying to coil back up and to get the insulation in place?

 

[Madrab]

Not sure whether something like hot water will make it flexible enough to lay out without it trying to coil back up and to get the insulation in place?

Absolutely, warm it up, or bend it opposite to itself and it will straighten up, should be more then enough to get the insulation around it