Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Cracks on walls around RSJ on new extension

  • 15-04-2008 7:41am
    #1
    masterK
    Registered Users, Registered Users 2 Posts: 2,757 ✭✭✭


    I've recently had a kitchen extension done to the back of my house which involved the insertion of an RSJ to support the upstairs of the house. There are quite a few cracks in the plasterboard all around the walls around the RSJ.

    Is this simply the walls adapting to the pressure or is it something to worry about, there are no cracks anywhere else on the walls?


Comments

  • #2
    brickie No 1
    Registered Users, Registered Users 2 Posts: 21 ✭brickie No 1


    masterK wrote: »
    I've recently had a kitchen extension done to the back of my house which involved the insertion of an RSJ to support the upstairs of the house. There are quite a few cracks in the plasterboard all around the walls around the RSJ.

    Is this simply the walls adapting to the pressure or is it something to worry about, there are no cracks anywhere else on the walls?

    have they built between the rsj an the walls its to carrie this should be done by packing in with what ever it takes ie bricks blocks mortar slates. if it is done right there will be no cracks at all.


  • #3
    Johnniep
    Registered Users, Registered Users 2 Posts: 203 ✭✭Johnniep


    The key to designing steel beams for existing houses is to restrict the amount the new beam will deflect in order to control cracking of the existing brick/blockwork. It sounds like the beam has deflected, causing the cracks. While the beam maybe strong enough to support the wall loads, it will deflect to take up the loads, causing the cracks.

    Who sized the beam? Did the builder just arrive up with it or did you get an engineer involved?


  • #4
    masterK
    Registered Users, Registered Users 2 Posts: 2,757 ✭✭✭masterK


    Johnniep wrote: »
    The key to designing steel beams for existing houses is to restrict the amount the new beam will deflect in order to control cracking of the existing brick/blockwork. It sounds like the beam has deflected, causing the cracks. While the beam maybe strong enough to support the wall loads, it will deflect to take up the loads, causing the cracks.

    Who sized the beam? Did the builder just arrive up with it or did you get an engineer involved?

    It was the builder, there was no engineer involved.


  • #5
    masterK
    Registered Users, Registered Users 2 Posts: 2,757 ✭✭✭masterK


    Is this something that I should be concerned about? Is there anything that can be done to rectify the problem now that the work is complete.


Advertisement