Originally Posted by idsebby
Should have explained my wooden floor was made of fiber glassed layered 1in marine ply.
Sounds like a nice solid floor idsebby..far more robust than my quicksilver wooden floor..
however IMO the subject is stringer strength and not floor strength. I can only imagine the join between the floor panels is the weak link ..and that is why the stringers are there.?
Perhaps more useful for berat’s issue .. is to add the thickness..and sizing of the aluminium stringers that you had made ?
They form the main structural part for the longitudinal strength of a SIB ? I appreciate the tubes at correct pressure provide a good part of that strength..but I am under the impression the stringers are of a shape .. which is pushed onto the edges of the boards by the tubes. Properly assembled ...there is no movement whatsoever between floor and tubes..due to the carefully designed shape of those original stringers. Movement of the floor in heavy seas.. could cause accelerated wear on the tube surface..
Use to weak a material for stringers and if they snap (at that weak point on the floor joins)..could very well puncture tubes at sea.
I confess ..although Im a great DIY person .. a couple of hundred pounds for a main component in a SIB is nothing to me .. I spent more replacing my broken mobile phone last month.
Just my opinion..and is a valid as anyones . ..but I felt it worth mentioning what could happen if the stringers broke out in heavy weather.