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strong but elegant
Made me think of Daniel Craig.
Can you reinforce underneath?
Everything that springs to mind will be heavy.
I wonder if there could be a way to add a finish to coloured acrylic then have a big sheet underneath to act as a bath mat. Sort of like that hack for making various different shiny black plastic electrical items look the same by adding a bushed finish.
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We've had a roll top bath on claw feet on a wooden floor for 20 years without any issue. The cradle in the picture looks like it has 8 not 4 supporting points which likely improve the loading.
500kg seems like a lot even for a fag packet calculation but you may have a really big bath, lots of water and be tall/heavy. It seems like you might be adding the bath full of water + the bodies when displacement changes that significantly.
Only other thing to add from experience is that despite these baths being heavy enough to worry about moving them up and down stairs they are a bit less worrying if they are disconnected from the plumbing and can be moved around relatively easily by one person.
If you are still worried you could add joists under the floor boards at the loading points which should eliminate any flex in the boards. With standard 200mm joist centres this hasn't been a problem in our bathroom anyway.
i have a big old cast iron bath sitting on a wooden cradle, the bath and cradle sit on a pine floor on quite a small surface area ( the area of the 4 legs ) , i am worried about the bath going through the pine floorboards and wanted something i can sit the bath on to distribute the weight more evenly / give it a bigger foot print. the bath plus water plus 2 people probably adds up to 500kg +
what is something strong but elegant that i could use either under the footprint of the whole bath or under each of the legs individually ?
bath looks similar to this