Standard coach bolt or external for deck

Discussion in 'Landscaping and Outdoors' started by Simurgh, Oct 28, 2017.

  1. Simurgh

    Simurgh New Member

    I am in the planning/ cost estimation for decking in our back garden.

    As the title says the first question is can I use non external coach bolts? Is it best to use external ones?

    I have never noticed any in use that are external coach bolts, they always seem to be the standard steel ones.

    A bit of info.

    I fist looked a a retaining wall but the garden in nearly 9 meters wide. the foundation and concrete blocks were near the £1000 mark without mortar mix or the surface material. So I am now looking at a deck.

    At the moment the grass is steep and uneven, so I plan on removing some of the soil to lower it to a more even slope.

    I was going to attach the deck to the concrete, however when I looked at it the concrete is not very thick and is resting on soil I think. I will dig down and investigate when closer to forming the foundations.

    A few additional questions.

    Will I need noggins or will 600mm space be ok without them?

    There is a public sewer running down the middle (red yellow box is access pannel) so will not be able to support it in the middle.

    I read (and can no longer find where) I read it to have a double frame. Is the best option? Does it make the frame stronger?

    Your opinion and results for post in concrete or anchor in concrete post on anchor? I have read different articles recommending different approach. Every time I do I keep thinking that my plan is wrong.

    Thank you for reading so far and I appreciate and information you can give, weather you answer a question or simply give your advise.

    I have added some images from Sketchup, I have not been able to attach the Sketchup file.

    Attached Files:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice