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

Spot The Thermal Bridge

  • 13-10-2007 1:04pm
    #1
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭


    Hi all..
    I pulled in a favor and had a guy install two RSJ's to support a second story wall.. I wasn't around when they we installed during the week.. Unfortunitely one will have to be cut back at both ends as it breaches the cavity..

    This is the frustrating thing with a self build, its the day your at work that something is done wrong :(

    img2994co7.th.jpg

    At least this wont take too long to rectify..

    Apart fron this I'm happy with progress... here's a recent snap..
    img2996xn4.th.jpg


    Cheers..
    BAM


Comments

  • #2
    kadman
    Moderators, Home & Garden Moderators Posts: 5,126 Mod ✭✭✭✭kadman


    Hi bbam,

    In technical terminology, I suppose you could call it ...a bridge too far,;);)

    kadman


  • #3
    smashey
    Registered Users, Registered Users 2 Posts: 21,676 ✭✭✭✭smashey


    kadman wrote: »
    Hi bbam,

    In technical terminology, I suppose you could call it ...a bridge too far,;);)

    kadman
    Kadman, there is a great new forum for this type of comment. :D


  • #4
    muffler
    Registered Users, Registered Users 2 Posts: 46,555 ✭✭✭✭muffler


    bbam wrote: »
    Hi all..
    I pulled in a favor and had a guy install two RSJ's to support a second story wall.. I wasn't around when they we installed during the week.. Unfortunitely one will have to be cut back at both ends as it breaches the cavity..
    Are they resting on the blocks only?


  • #5
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Muffler..
    Yes.. a small pad under each contact point..
    bam


  • #6
    muffler
    Registered Users, Registered Users 2 Posts: 46,555 ✭✭✭✭muffler


    bbam wrote: »
    Muffler..
    Yes.. a small pad under each contact point..
    bam
    Your padstones should be 450mm


  • Advertisement
  • #7
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Muffler...
    can you elaborate on this please..
    thanks :confused:

    this is the point where you professional builders out there shake your head and throw eyes sky-ward


  • #8
    Victor
    Registered Users, Registered Users 2 Posts: 78,580 ✭✭✭✭Victor


    bbam wrote: »
    Muffler...
    can you elaborate on this please..
    thanks :confused:
    Resting a beam on ordinary concrete blockwork creates a pressure point that the blockwork may not be able to take. Concrete blocks can easily be broken with hand tools - imagine what a few tonnes can do. The trick is to cast a piece of concrete into the wall.


  • #9
    muffler
    Registered Users, Registered Users 2 Posts: 46,555 ✭✭✭✭muffler


    What Victor said and in order to spread the pin-point loading uniformly across the blockwork the padstone should be a min of 450 mm long and be at right angles (where possible) to the RSJ.

    Think of it like the man on the bed of nails. If he lies on 1 or 2 nails they will pierce his body because of the sheer amount of weight at 1 or 2 points. But if he spreads the weight of his body over a large number of nails then there is less pressure on each nail.


  • #10
    Mellor
    Registered Users, Registered Users 2 Posts: 39,902 ✭✭✭✭Mellor


    we would of also accepted a bed of eggs muffler.

    Insitu concrete is probably easiest, but you can also probably buy a suitable precast piece.


  • #11
    muffler
    Registered Users, Registered Users 2 Posts: 46,555 ✭✭✭✭muffler


    Mellor wrote: »
    we would of also accepted a bed of eggs muffler.
    nails would probably work better with an RSJ :D


  • Advertisement
  • #12
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Thanks..
    This is easily rectified at this stage...
    Cheers..
    bam


Advertisement