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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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    • CommentAuthorrsk1
    • CommentTimeSep 11th 2020
     
    I am designing a small timber building (3.8 * 7m internal, 3m high external) on a community garden, for use by community groups. Timber frame, insulation, timber cladding, Green roof, accessible toilet. Electrics and toilet/plumbing presumably need to be to regs, but will regs apply to the whole building, particularly u values and insulation?
    •  
      CommentAuthordjh
    • CommentTimeSep 11th 2020
     
    Will it be heated? Does it contain any accomodation (sleeping, cooking, washing)?

    Even if building regs don't apply, why would you consider less insulation (assuming you are :)?
    • CommentAuthorphiledge
    • CommentTimeSep 11th 2020
     
    As its not for personal use, you'd want anything considered 'hazardous' properly designed and installed- definitely the electrics and any water heating/storage
  1.  
    Assuming it is a shelter/mess-room it will want insulation, and ideally as much as possible to keep the heat input required to its lowest possible level. Will it need shutters against potential vandalism? Any such precautions of course reduce solar gain.

    Not certain re regs for the fabric, but as philedge says, elecs and heating appliances would need to be certified.

    And whatever the answer is on Regs:

    Wall insulation:

    150 sheep's wool (lambda 0.039) or 170-ish mineral wool (lambda 0.044) in walls will get you around 0.25W/m2K not accounting for the timber fraction.

    Floor insulation:

    floors are the cause of many a cold foot and chilblain! Warm feet = lower 'desire temp' for upper body, IME.
    • CommentAuthortony
    • CommentTimeSep 11th 2020
     
    Is it within 1m of any boundary?
    • CommentAuthorrsk1
    • CommentTimeSep 13th 2020
     
    <blockquote><cite>Posted By: djh</cite>Will it be heated? Does it contain any accomodation (sleeping, cooking, washing)?

    Even if building regs don't apply, why would you consider less insulation (assuming you are :)?</blockquote>


    Because the budget is very tight!
    • CommentAuthorrsk1
    • CommentTimeSep 13th 2020
     
    I was planning on 130 or 150mm wood fibre walls and ceiling, 100 PUR between floor joists.

    The exact location isn't settled yet, I expect it will be about 3 metres from the pavement.

    Any heating needed by users will be by stand alone electric heaters.

    I guess I am wondering whether I need to get the whole building inspected and signed off by BC, or whether if electrics and bathroom are to regs - eg. installed by competent persons, I don't need to
    •  
      CommentAuthordjh
    • CommentTimeSep 13th 2020
     
    Posted By: rsk1Because the budget is very tight!

    Probably best to ask on another (non-green) forum then?
    • CommentAuthortony
    • CommentTimeSep 13th 2020
     
    And the side boundaries?
    • CommentAuthorrsk1
    • CommentTimeSep 13th 2020
     
    <blockquote><cite>Posted By: tony</cite>And the side boundaries?</blockquote>

    what do you mean by side boundaries?
    • CommentAuthortony
    • CommentTimeSep 13th 2020
     
    Front boundary sounds like it is a footpath, it needs to be more than a meter away from any boundary
    • CommentAuthorrsk1
    • CommentTimeSep 13th 2020
     
    not near anything on other sides.

    I think I have concluded from the part L approved docs that freestanding non dwelling buildings of <50 sqm floor are exempt from BR
    • CommentAuthorCWatters
    • CommentTimeSep 14th 2020
     
    Small detached building (class 6) do not require Building Control Approval provided they meet the following..

    https://www.legislation.gov.uk/uksi/2010/2214/schedule/2/part/6/made

    CLASS 6
    Small detached buildings

    1. A detached single storey building, having a floor area which does not exceed 30m2, which contains no sleeping accommodation and is a building—

    (a)no point of which is less than one metre from the boundary of its curtilage; or
    (b)which is constructed substantially of non-combustible material.

    However this page...
    https://www.planningportal.co.uk/info/200128/building_control/38/building_regulations/2
    ..says that Part P applies and Part L might apply.
    • CommentAuthorCWatters
    • CommentTimeSep 14th 2020 edited
     
    Posted By: rsk1Timber frame, insulation, timber cladding,


    That doesn't sound like it meets (b) so how close to the boundary?

    Edit: Ah I see thats been answered..

    Posted By: rsk1The exact location isn't settled yet, I expect it will be about 3 metres from the pavement.
    • CommentAuthorrsk1
    • CommentTimeSep 14th 2020
     
    So part L doesn't apply (because less than 50m2 floor space), but looks like everything else does ... Bad news!
    • CommentAuthorCWatters
    • CommentTime7 days ago
     
    Move it further from the boundary then?

    As long as its >1m away and less than 30sqm I believe....

    1) You don't need to make a Building Control Application
    2) Its exempt from Parts A-K, L, M, N and Q.
    3) Its not exempt from Part P (electrics).

    What else is there apart from Planning Permission?
    •  
      CommentAuthordjh
    • CommentTime6 days ago
     
    Posted By: CWatters1) You don't need to make a Building Control Application
    2) Its exempt from Parts A-K, L, M, N and Q.
    3) Its not exempt from Part P (electrics).

    What else is there apart from Planning Permission?

    (a) Part N is withdrawn
    (b) A-K, L, M is more concisely written A-M
    (c) there's also Part R :)

    It might be worth noting that since this isn't a dwelling, then even though Building Regs may not apply directly, the Equality and Disability legislation still apply so that even though it's probably worth following as much of regs as is 'common sense' anyway, it might be worth considering what else *in addition* to part M might be necessary.
    • CommentAuthorrsk1
    • CommentTime5 days ago
     
    <blockquote><cite>Posted By: CWatters</cite>Move it further from the boundary then?

    As long as its >1m away and less than 30sqm I believe....

    1) You don't need to make a Building Control Application
    2) Its exempt from Parts A-K, L, M, N and Q.
    3) Its not exempt from Part P (electrics).

    What else is there apart from Planning Permission?</blockquote>

    What makes you think it's exempt from A - M, N and Q ?
    • CommentAuthorrsk1
    • CommentTime5 days ago
     
    <blockquote><cite>Posted By: djh</cite>it might be worth considering what else *in addition* to part M might be necessary.</blockquote>

    What do you mean by in addition to part M?
    •  
      CommentAuthordjh
    • CommentTime5 days ago
     
    Posted By: rsk1
    Posted By: djhit might be worth considering what else *in addition* to part M might be necessary.


    What do you mean by in addition to part M?

    As I said, the other laws affecting discrimination still apply and make requirements on buildings.
    • CommentAuthorCWatters
    • CommentTime19 hours ago
     
    <blockquote><cite>Posted By: rsk1</cite>What makes you think it's exempt from A - M, N and Q ?</blockquote>
    The link I posted earlier..
    https://www.planningportal.co.uk/info/200128/building_control/38/building_regulations/2
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