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  1.  
    I'd like to build my half landings (two, stacked on top of each other) so that they could be removed in case access was needed for the services (heat store etc) located in the attic. They will be approximately 800 x 1600 each. I was thinking of some kind of bracket with structural bolts that could be removed. Would anybody have suggestions for a type of suitable bracket?
  2.  
    We had a removable floor section into our loft room which was rather larger than that.

    In our case we separated the structural aspect from the fixings aspect, and had support attached to the wall, which then had a removable joist section on the support with a non-structural "keep in place" bolt / wingnut, and a separate floor on top (which was a simple section of 22mm OSB).

    Worked well.

    Without knowing the structure / walls etc around it I cannot comment in more detail. Can you do something as simple as wooden wall plates attached with concrete screws, then something on your halflanding floor section that can be gripped from above?

    Ferdinand
    •  
      CommentAuthordjh
    • CommentTimeSep 2nd 2017
     
    What Ferdinand said. Make the structural connection be the half-landing sitting on a frame. I suppose your engineer will need to sign off whatever scheme and they will find it easier to sign off on something that doesn't rely on removable structural connections.
  3.  
    Thanks@ Ferdinand and Djh. The idea of gravity being separate from the fixings is a good idea. I was worried about bolts being the primary weight bearers.

    To give a little more detail, it is a stairwell made primarily from timber. The problem is that ideally the ends of the landing would bear on this frame, but then they would be difficult to remove.

    I was thinking that some kind of joist hanger might be a good solution perhaps?
  4.  
    Something like this... http://www.tecoproducts.co.uk/joist-hangers/concealed-flange-joist-hangers

    With the joists for the landing slotted into these on either side.
    • CommentAuthortony
    • CommentTimeSep 3rd 2017 edited
     
    If it was mine I would carry it up the stairs.

    For removable landing, built in trimmer, three joists bolted to walls same depth as trimmer, central 75x50 joist notched in joinery style and simply lifts out, two pieces of removable landing floor say 25mm ply with ceiling attached, paint bottom of joists and trimmer same colour as ceiling, or add 3x1 par that ceiling sits on.
  5.  
    Sorry Tony, I don't quite follow you. Would you mind spelling it out for me?
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