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  1. #31
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

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    My holes were approved straight away by council about a week or so ago which is great. Only problem is that it rained and not all holes were covered well enough to stop them getting filled. I bought a pump but it can only empty the water to a depth of about 50mm.
    Anybody had experience with this?
    Can you pour concrete on the water?
    If you can is the concrete going to sink more as it cures due to the muddy floor of the hole?
    Do I need to wait for it to dry (deep hole and winter so don't know how well this is going to go)
    Any other suggestions/experiences?
    Any help would be appreciated.

  2. #32
    Join Date
    Oct 2015
    Location
    Australia
    Posts
    230

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    I used an old plastic jug on the end of a stick to get the last inch of water and mud out.
    How deep?

    Russ

  3. #33
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

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    Quote Originally Posted by russ57 View Post
    I used an old plastic jug on the end of a stick to get the last inch of water and mud out.
    How deep?

    Russ
    The holes are 450mm x 450mm and 600mm deep.

    I was thinking maybe a wet vacuum if the water does need to be removed don't know the consequences to the vacuum.

  4. #34
    Join Date
    Feb 2003
    Location
    used to live in Sydney, now it's Canada
    Age
    64
    Posts
    10,852

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    wet and dry vacuum would be the quickest (provided the vac has a float shut-off valve), but a 2 litre jug (or can) on the end of a stick would be the cheapest by three orders of magnitude.
    regards from Canada

    ian

  5. #35
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,463

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    If the residue in the hole is like porridge, it HAS TO COME OUT, if runny like soup, tip half bad neat cement, stir then place concrete
    The person who never made a mistake never made anything

    Cheers
    Ray

  6. #36
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    Thanks for the advice. I used the wet vacuum I had to suck the rest of the water out. Even though the residue did look more like soup than porridge I decided to chuck in some dry fill to soak up the moisture and then shovelled the small amounts out back to the base so it looked like a freshly dug hole.
    Put some of my first stirrups in place ready for concrete and now it has rained again.
    Anyway should have concrete in a few holes by Wednesday when I will go through the process of emptying the holes of water again.
    I think when I finally finish this deck I will put up a webpage for it.

  7. #37
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    So I am making some progress. I concreted 5 holes and am oiling the posts to go in the stirrups that are in the concrete. I am thinking I am going to use this as a way to construct my deck and hold the remaining stirrups in place for concreting.
    Since I am placing my bearers in notches on my posts and the bearers don't go the entire length with one piece I need to make a join in a notch.
    Does anyone have any advice on that. I see knuckle plates suggested as holding a join together but that would be for if your join was on top of a post not on the side in a notch.
    I can only see that at any join I make it will only have a bolt in each bearer at the join not two like all of the other posts that have two bolts because they are one piece.
    I hope this makes sense and what do people do for these type of joins?
    Thanks for any tips.

  8. #38
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,463

    Default

    Fit a knuckle plate (galvanized) over your join (get a size to suit min 50mm cover each side of join x close to width of bearer) and 2 bolts through the plate and joint into post
    The person who never made a mistake never made anything

    Cheers
    Ray

  9. #39
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    Thanks Ray. Didn't realise that bolting through the plate was an ok thing to do. Also any suggestions on a specific type of join here. I only see myself as being able to do a butt or lap in all honesty.

  10. #40
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,463

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    1/2 lap is fine so long as the bottom of each bearer is shouldered (seated) in the checkout of the pier/post by a minimum 50mm, or just mitre them
    The person who never made a mistake never made anything

    Cheers
    Ray

  11. #41
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    Hi, should be getting to this next week. I have been looking at this and is a vertical half lap better to be done than a horizontal half lap or is it not worth the effort? Can't remember if I mentioned that I am using 190mm x 45mm bearers on 100mm x 100mm posts which have a 20mm notch on each side for the bearers to sit in.

  12. #42
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,463

    Default

    Your description can be interpreted in 2 ways, any chance of a 3D sketch, freehand drawn is fine
    The person who never made a mistake never made anything

    Cheers
    Ray

  13. #43
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    I have attached a sketch. Hopefully it makes sense.joints.PNG

  14. #44
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,463

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    Your side 1/2 lap is preferable but if you need to notch into your post 45mm otherwise you will get compression deformation of the 20mm bearing of the bearer which is 1/2 of the required support for the bearing edge of the bearer
    The person who never made a mistake never made anything

    Cheers
    Ray

  15. #45
    Join Date
    Feb 2016
    Location
    Australia
    Age
    42
    Posts
    38

    Default

    Quote Originally Posted by rwbuild View Post
    Your side 1/2 lap is preferable but if you need to notch into your post 45mm otherwise you will get compression deformation of the 20mm bearing of the bearer which is 1/2 of the required support for the bearing edge of the bearer
    Sorry I think I understand what you have written but let me confirm.

    Because I am using notches on each side of the post which are only 20mm using the Vertical Half Lap in my diagram is no good as I will most likely get some sort of failure due to compression? I assume this is due to one bearer not actually sitting in the notch for very much if at all.

    Therefore I should be using what I have written as a Horizontal Half Lap. I can see how even though not necessarily as strong as the other type of join (if they were fully supported on top of a post).

    It would be greatly appreciated if you could let me know if I am correct in understanding what you have written.

    Thanks.

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