Browse Forums Owner Builder Forum 1 Mar 28, 2016 11:20 am Hello all! My lady and I are building a tiny house out of a retired semi truck trailer. The trailer is 25' x 8' and we are beginning to build the floor frame. Question is; can we use 2x6's (there will be a loft) for the floor frame every 16" on center, and should the 2x6's (or whatever we use) run the length of the trailer or the width? Thanks for your responses!! Re: Building a tiny house, need some help 2Jun 22, 2016 4:55 pm Hi TravisGM, Whatever you do put the timbers across the 8 foot span... only steel will span 25 feet. Secondly are you American or English?... because they are called 6 x 2's in OZ. You also need to know the stress grade of the timber for an accurate answer on span capability, but sounds OK over 8 feet. We are also in metric in OZ since 1973... 33 years ago now. By the way if you wish to make this a legal house, the minimum size I could design was 4.32 squares using 70 mm x 45 mm KDHW studs too (for Victorian rules in the 1980's)... or just over twice the size of your trailer... so with a stair included 2 storeys will be stretching it fr compliance. Also 18 inches (450mm) centres are OK for floor joists... and suggest you block between ends and support upper walls off sides of the trailer frame without knowing any details. Good luck with your venture Re: Building a tiny house, need some help 3Jun 27, 2016 12:39 pm Approx load: Live load 2 kN/m2, DL 0.8kN.m2; Total load = 2.8kN/m2 times spacing of 0.45m = 1.26kN/m Bending Moment on 8ft or 2.5m joist = 1.26 x 2.5^2 / 8 = 0.98kNm Max stress in your joists = Moment x 6 / bd^2 (bd = 2" by 6" or 50mm by 150mm) Stress = 5.25 MPa Make sure your timber allowable stress is greater than 5.25 MPa Additional deflection and shear stress check should be done. Re: Building a tiny house, need some help 4Jun 29, 2016 8:27 pm marblaze Approx load: Live load 2 kN/m2, DL 0.8kN.m2; Total load = 2.8kN/m2 times spacing of 0.45m = 1.26kN/m Bending Moment on 8ft or 2.5m joist = 1.26 x 2.5^2 / 8 = 0.98kNm Max stress in your joists = Moment x 6 / bd^2 (bd = 2" by 6" or 50mm by 150mm) Stress = 5.25 MPa Make sure your timber allowable stress is greater than 5.25 MPa Additional deflection and shear stress check should be done. Do you care to reference the relevant AS code sections and factors? Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Hi VK, Think it's worth investing time in an Owner Builder course to equip you with basic knowledge on Australian Building Industry and its regulations. Also, I suggest… 11 23735 Caesarstone, quantum zero, Q Stone zero, porcelain. All the manufacturers are pivoting into zero silica materials. Google any of those and have a look. Some are still… 1 488 Hi there, I'm a conplete newbie to this, but I'm looking to put a floor down in my 6x9m shed. It's currently sitting on a 100mm thick concrete perimeter (dirt floor… 0 6468 |