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raft casing question?

  • 10-01-2013 11:04pm
    #1
    jakko86
    Registered Users, Registered Users 2 Posts: 308 ✭✭


    Hi all, Have a couple of questions about raft foundations, Firstly has the raft to be poured in one setting? I was told you can pour the outer edges of the raft and then lay 9' solids around the edges to form the casing and then pour the top layer of the raft?Does this comply with regs?


Comments

  • #2
    archtech
    Registered Users, Registered Users 2 Posts: 1,046 ✭✭✭archtech


    jakko86 wrote: »
    Hi all, Have a couple of questions about raft foundations, Firstly has the raft to be poured in one setting? I was told you can pour the outer edges of the raft and then lay 9' solids around the edges to form the casing and then pour the top layer of the raft?Does this comply with regs?

    Your structural engineer who designed the raft for you will advise you. I assume s/he is also inspecting and certifying the raft also.


  • #3
    jakko86
    Registered Users, Registered Users 2 Posts: 308 ✭✭jakko86


    Ya thats what i will be doing but wondering is this practice fairly normal i know usually its cased with timber and poured in one setting or thats what i thought?


  • #4
    archtech
    Registered Users, Registered Users 2 Posts: 1,046 ✭✭✭archtech


    jakko86 wrote: »
    Ya thats what i will be doing but wondering is this practice fairly normal i know usually its cased with timber and poured in one setting or thats what i thought?

    Well s/he'll advise you then. I'm afraid I won't, as the Forum Charter prohibits structural advise.


  • #5
    belcampprisoner
    Banned (with Prison Access) Posts: 698 ✭✭✭belcampprisoner


    pour once


  • #6
    jakko86
    Registered Users, Registered Users 2 Posts: 308 ✭✭jakko86


    archtech wrote: »

    Well s/he'll advise you then. I'm afraid I won't, as the Forum Charter prohibits structural advise.
    Sorry didn't know that, just lookin for opinions on what I was told whether its good practice or not.


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  • #7
    A fella called fish
    Banned (with Prison Access) Posts: 188 ✭✭A fella called fish


    Maybe it's just me..but I get the feeling that a lot of people seeking help with their "self-builds" on here have not engaged the services of a Structural Engineer..which is quite concerning.

    If however you do have a Structural Engineer on board then I'm sure he will make his requirements clear for you.


  • #8
    jakko86
    Registered Users, Registered Users 2 Posts: 308 ✭✭jakko86


    A fella called fish wrote: »
    Maybe it's just me..but I get the feeling that a lot of people seeking help with their "self-builds" on here have not engaged the services of a Structural Engineer..which is quite concerning.

    If however you do have a Structural Engineer on board then I'm sure he will make his requirements clear for you.
    Well not the case here,I've been told this practice is fine and looking for opinions on it,im involved in a project and waiting on drawings but after all this is a forum for such questions, and if self builders do have queries I would have thought they would be entitled to broaden their knowledge of what's happening during the build by this method and in my opinion there is nothing wrong with that.


  • #9
    A fella called fish
    Banned (with Prison Access) Posts: 188 ✭✭A fella called fish


    Great to hear that you do have an Engineer on board.

    Of course 'self builders'/DIY entusiasts have every right to broaden their knowledge. It's when they construct without design that concerns me.

    To shed some light on your original question; it is usually possible to have a day-joint in a raft. However it's position will be critical and will be project specific, so the S.E will advise your builder where he can locate it. The treatment of the concrete face prior to pouring phase 2 and reinforcement lap length across the joint will also be critical and will no doubt be specified by the Project S.E.


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