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  • strength of OSB wood for lattice floor frame

    Discussion in 'The main mechanical design forum' started by oemodm, May 10, 2014.

    1. oemodm

      oemodm Active Member

      May 2014
      Likes Received:
      Hi everyone,

      Bit of an odd posting. I'm working on a personal building project. The ground floor needs a sloping concrete floor to be flattened. I would just like to know if the OSB lattice will be strong enough.

      The sloping concrete floor to insulate & flatten out using wood.

      This is how the sub floor will be made: Stand an OSB board (18mm) on its edge (A), flick a builders chalk line to get the straight line, cut, and fix. Repeat all the way.


      Here's detail of how each will be braced, fixed, filled - spaced at 40 or 50cm:

      To reduce cold bridging on the OSB, I'll cut small curves into the base:


      This idea is based on OSB I-beams. The only differences are:
      1 = I beam's have a laminate strip top and bottom. However, these aren't needed, as the OSB is sitting on a concrete floor.
      2 = My idea will use 18mm OSB thickness, compared to normal 9.5mm thickness in Ibeams.


      Will the OSB lattice sitting on a concrete floor be strong enough?

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