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Rsj /Knockthrough ideas/advice

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  • 28-11-2012 1:57pm
    #1
    isup
    Registered Users Posts: 649 ✭✭✭


    Im looking to knock through the rear wall of my semi-d for an extension.
    I am going to get a structural engineer to do the calcs and specs . But i was just looking for advice or ideas before i go ahead with my plans.
    I want the Rsj at same level as the joists , i also need another Rsj t-ing off from the one in the rear wall back to an existing wall . This Rsj will support the joists.

    so in the photos ive marked where im thinking the Rsj's will go.
    I dont know if the main one should span the entire width of the house .
    The wall is built just with cavity blocks and the roof above is 3 mts or flat roof that leads into a regular roof.

    I know the SE will give me all this info but im just seeing if anyone has any imput or advice or alterations to my plans . if interested post away, cheers
    Tagged:


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    #2
    isup
    Registered Users Posts: 649 ✭✭✭isup


    basic floor plan


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    #3
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,931 Mod ✭✭✭✭DOCARCH


    isup wrote: »
    I dont know if the main one should span the entire width of the house.

    Probably, pier between window and door would not offer a great deal of support - alternativley new solid block pier and/or column may need to be introduced. You will also need to incorporate/make provision for mass concrete bearing pads....

    ....but....

    ....don't take your advice on here! Get your SE on board a.s.a.p. to advise.


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    #4
    isup
    Registered Users Posts: 649 ✭✭✭isup


    DOCARCH wrote: »
    Probably, pier between window and door would not offer a great deal of support - alternativley new solid block pier and/or column may need to be introduced. You will also need to incorporate/make provision for mass concrete bearing pads....

    ....but....

    ....don't take your advice on here! Get your SE on board a.s.a.p. to advise.

    I will do. yeah i was thinking of rebuilding that in solids and returning it under the window attatching it to the exixting wall.


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    #5
    A fella called fish
    Banned (with Prison Access) Posts: 188 ✭✭A fella called fish


    As a Structural Enginner I must say I'm frightened by these photos..

    The floor (which you've just taken out) provides lateral stability to the wall.

    Get your builder to put a minimum of 3 diagonal push/pull props against this wall immediately (or at least replace some of the joists) and engage a local Structural Engineer tomorrow.


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