Floor Joist - Wall on one size only. Support options?

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10 May 2011
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can anyone assist with suspended timber joist layout and sizing. The floor is L shaped. Joist are 150x47 for a max span of 2.6m. However I am not sure how it should be run in the corner, as the 2.6m joists would then need to be secured to the shorter 1.5m joist (The 1.5m is then carrying its own. load, 2 others). Does this final joist need doubling?, or increasing in size?, or a sleeper wall?

 
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Simplest option is to add a double trimmer joist to one side. 2x50mm looks borderline so you might need 2x75mm. Check span tables to be sure though.
 

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