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HELP! Car Port Design

Discussion in 'Building' started by edb1984, 21 Jul 2019.

  1. edb1984

    edb1984

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    Hey everyone.

    Can i have some constructive criticism / advice on building a car port on my house please? i am fine with the construction and fixings etc its more the design i need help with.

    I have mocked it up to scale in Sketchup and here are some shots and info of timber etc - whats your advice? is it all okay or should i change anything?

    (Apologies but my terminology etc will be very amateurish!)

    All timber is Treated Timber.
    • Main supporting timbers (vertical ones) are 4x4 and will be spaced 2900mm apart and secured to concrete footings i will pour and attached to metal feet stood off the ground. BUT i would like to space one pair 3950 apart as this will allow me more space - is that span okay?
    • the timber attached to the vertical supports that will form the "Frame" will be 6x2
    • the timber from the building to the supports will be 4x2
    • then across the 4x2 to support the corrugated plastic roofing will be 2x2
    • Finally the plastic roofing will be 1.1mm, with 760mm between the supports holding it.
    the spans are as follows;
    from building to supporting pillars = 4100
    from the building "Front" to the main garage = 3900
    the the small walkway bit is a simple 1600x5000


    here are some images of what i have in mind - please fire away some comments and advice :)
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
    Last edited: 21 Jul 2019
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  3. ^woody^

    ^woody^

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    Gutter?

    Park the car a bit better?

    The rafters look over-spanned for general use, never mind wind and snow loading.

    Is it a bit flat? What does the sheet manufacturer say about pitch?

    Is it within the PD height and other criteria?
     
  4. tony1851

    tony1851

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    Twin-walled polycarbonate sheet looks neater than corrugated plastic.
    As above, timber members look a bit sparse.
    Why have two beams at the front? - one would do.
    Keep it below 30 sq m. covered area and you won't need to worry your friendly neighbourhood building inspector.
     
  5. edb1984

    edb1984

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    Hey woody thanks for the reply :)

    here are some answers;

    my concern also is the rafters, all the info i find is regarding supporting substantial loads such as tile or metal roofing - not the plastic sheet although i do fully appreciate loading increases with weather especially snow, although unlikely worth planning around so advice would be welcomed on not only the spacing but also the wood itself. at the moment its 4x2 timber 975mm between centres

    parking a 3.8M car in a 3.9 space has always proved tricky if i want to leave room to open the garage door :p - and as much as i would love to put it in there that is full of junk :LOL:

    yes guttering will go on and so will a Fascia but i didn't see it as important to model sorry as this is more of a structural question.

    its got a 7' pitch - they advised between 5 and 7 - same with the 760 spacing on supports for the sheeting.

    from checking the planning portal its all within guidelines as far as i can tell but i am very happy to be told or advised otherwise.
     
  6. tony1851

    tony1851

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    If it's more than half the width of the house at its widest point, it would need planning permission :(
     
  7. edb1984

    edb1984

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    Thanks for letting me know that - Well, i didn't see that! - that sucks balls but every cloud has a silver lining so it reduces material cost!
     
  8. edb1984

    edb1984

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    Okay guys how does this look?
    • swap to polycarbonate sheet to make it look neat
    • buy it at 2100 wide so 2 sheets will cover the roof and join in the middle on a centre rafter with a width of 1000 between rafters
    • rafters stay as 4x2
    • battens/noggins spaced at 700mm and they are 2x2
    • uprights/supports remain as 6x2
    • pitch changed to 5' (The recommended i could find for poly-carbonate)
    [​IMG]
    [​IMG]
    [​IMG]
     
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  10. tony1851

    tony1851

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    It depends on where the front of your house is; a quick pencil sketch plan showing the house, garage and carport, with the front of the house indicated, would enable members to advise whether or not it would need planning permission.
     
  11. Ian H

    Ian H

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    Mk1 Golf Convertible 4x4!!
    5BEE8DFF-FF3F-4092-BFDF-16A7B2D375D9.png
     
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  12. edb1984

    edb1984

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    I WISH! - transparent a Golf R DSG engine in there :sneaky:

    Here is the real one that lives there ! - MK1 Golf GTI Christmas Cabriolet 1.8 8V Bosch jetronic
    [​IMG]
     
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  13. edb1984

    edb1984

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    so here is a few new shots with the front indicated - car port not protruding further than then front of the house.

    I also changed the uprights to 6x6 instead of the 4x4 - do you guys think its looking almost good to go?
    [​IMG]
    [​IMG]
    [​IMG]
     
  14. rssteve

    rssteve

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    It looks almost as wide as the house? Did you think depth with regards to the 50%?
     
  15. edb1984

    edb1984

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    hey

    a few people have mentioned this 50% so i have started searching and i cant find it in the planning portal etc - i can find that no more than 50% of the land can be used but i cant find anything regarding the house itself?
     
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