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MDPE Underground pipe in concrete?

View the thread, titled "MDPE Underground pipe in concrete?" which is posted in Renewables on UK Plumbers Forums.

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wild nomad

Hi there,

Does anyone know if MDPE under ground pipe has to be protected in some way when being buried in concrete?

Thanks in advance 🙂
 
Hi there,

Does anyone know if MDPE under ground pipe has to be protected in some way when being buried in concrete?

Thanks in advance 🙂

if it was me and the concrete was permanent eg under a house/building i would make a duct out of 4" soil pipe so you could always replace the mdpe at a later date if you had to
 
Yeh always protect the pipe through concrete by using ribbed ducting same as new builds , or drainage , how much length will be in concrete, ?
 
How deep is it? I mean 700 to 900mm is a lot of concrete? Usually through founds it's a sleeve . But sounds to me like your going to need more protection from frost than concrete. Concrete may destroy it in 5 years
Frost could do it by end of the year!
 
How deep is it? I mean 700 to 900mm is a lot of concrete? Usually through founds it's a sleeve . But sounds to me like your going to need more protection from frost than concrete. Concrete may destroy it in 5 years
Frost could do it by end of the year!

Yes, I have made the customer aware of potential cold weather damage as it's only about 12 inches underground, but he says he is willing to take the risk. Customers - what can you do!
 
Yes, I have made the customer aware of potential cold weather damage as it's only about 12 inches underground, but he says he is willing to take the risk. Customers - what can you do!

bit overkill if you ask me but have you had a price on Uponor Thermo?
 
Sleeve it in 6" duct use 19mm armourflex or external wet rated lagging and pull it in. Pull in a spare draw rope too
 
Yes, I have made the customer aware of potential cold weather damage as it's only about 12 inches underground, but he says he is willing to take the risk. Customers - what can you do!

dig a deeper trench and do it right so it wont freeze, as you will get the blame down the line, when they throw the regs back at you
 
As said id do the job properly the first time, it might be a bit of work digging between 750mm -1300mm deep but the headache when it comes back to you a few years down the line wont be fun, and the customer will blame you as your the professional
 

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