You can saw a joist in 2 and no-ones going anywhere. You just get a patch where its a bit bouncy.
Actually joists on Victorian properties are way smaller and weaker than modern houses. Its normally a complete non-issue in practice.
NT
In message , Cash
Then you had a poor instructor!
Cash
Harry, if it's getting down to gutter level.
You're really not exactly the brightest iron in the fire are you, especially as you seem to take solutions from other people posts here - and pass them off as your own.
And as for trying to connect an engineered aircraft spar to a rafter saw from a single lump of in design terms, then you progress from dense to even denser and totally incapable of actually keeping to the subject in hand.
Try loading an aircraft spar, notched for pipes, drilled for cables and supported at only two ends with the deadloads household furniture and the live loads of persons walking over and see how long it will last.
A rare thing for me, but you are now consigned to the kill-file.
Cash
There are no mosquitoes flying today.
The wooden structures simply haven't lasted..
Mind you, they were never designed to anyway.
Average life of a WWII airframe was about 6 weeks in active 'service' IIRC.
Not that this has ANYTHING to do with sawing beams.
But it goes to nail a further bit of harry's coffin down.
Yes. BR today are excessively tight on permitted sag, with Victorian ceilings routinely grossly violating the pointlessly tight 3mm figure (IIRC). Modern ceilings rely largely on stiff wood to limit sound passage, whereas victorian ceilings relied much more on thick heavy plaster to stop noise.
NT
In message , Cash
And taking on harry at the same time?
Of the two Adam, at least Dennis is the least obnoxious - but I suppose that's life, and where there's rotten wood, things will crawl out of it.
*eg*Cash
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