Will floor take the weight?

[Cavester]

I have an en-suite in which I'm planning on putting a double bath (1800x1300mm). It will be positioned against the outer wall which sits on a large steel beam. Going into the beam are 5 X 220 deep joists (400 apart) connected via joist hangers to a wooden binder in the beam web. These wooden joists are what the bath will sit on.

Bath is 100kg and it can take 450kg of water (obviously dispersed with 2 people).

Question is should I get a structural engineer to verify or is it typically expected that the floor of this makup should be able to take that sort of weight?

Thanks.

 

[blup]

What's the span and thickness of the joists?

Blup

 

[blup]

Placing the bath at the wall end of the joists, and across them, will spread the load and minimise deflection, so in principle shouldn't be a problem, if the span and condition of the joists is all good. 9" joists do suggest a significant span though.

But impossible to tell from here.

Blup

 

[Cavester]

Thanks Blup. Span is approx 4.2m although as noted the bath is at the end of the joists do mostly in shear rather than deflection, held up by Simpson just hangers nailed into wood within steel web, which is more of a concern for me.

Hopefully these pictures help...

 

[tony1851]

You need to work out the total load (bath +water+2 people) and divide that by the number of joists it straddles, to find the additional load on each joist.
Probably the critical aspects will be shear and maybe deflection.
The Simpson book will give the safe working load for each joist hanger.