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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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    • CommentAuthordsewell
    • CommentTimeJun 27th 2017
     
    Hello all,

    I've been trying to find a definitive answer to the regs related to bringing services into a house. We are building on a plot that had services (gas, elec, water, telecom) on the plot already. The gas, water and electricity all run under the slab and come up in the utility.

    Each of the services are in seperate ducts, and all of the ducts are in a single shallow trench.

    My questnios is - is it ok for all of the services to run in close proximity to each other?

    The only requirement we can find relates to the depth of the water pipe below ground. They are all well below the ground level and below the floor structure (which is made up of hardcore, blinding, 300mm of insulation and 150mm slab).

    Our contractor is great and has suggested all is fine and within regs. But, it just feels as though there should be some seperation between them. I called WRAS and they said call NJUG and NJUG said their responsibility ends with the utility companies and the highway and to call the utilities. We have reviewed the Thames water new build guidance but it is silent on below the house requirements.

    Is anybody able to shed any light on utilities below the house? If there is a requirement I can ping it over to the contractor. If not, all is well.

    Any help welcome.
    • CommentAuthorborpin
    • CommentTimeJun 27th 2017
     
    It may depend on where you are in the country, but in Scotland gas is the only one requiring separation as the meter is outside (I used a semi concealed box to be within 1M of front of house) and the run from there is in copper external then internal. The other 3 run happily close together. Put in 32mm Water if you can.
    •  
      CommentAuthordjh
    • CommentTimeJun 27th 2017
     
    Best not to run mains electricity too close to phone or data lines to minimise interference. All our services run in a common 600 mm wide trench. They all come up in the utility too.
    • CommentAuthordsewell
    • CommentTimeJun 27th 2017
     
    We have the data well over 1m from the mains. I think its the Gas, Water, Elec are all in one trench.

    Good reminder re 32mm water supply (if possible).
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