I want to replace a marble surround and jetted tub with a cast iron clawfoot tub in my 2nd story bath. The span is 122″ with 2x10s (looks like fir?) on 16″ centers. Subfloor is 1 1/8″ 4×8 plywood.
I’ve done some carpentry before and know how to read the joist load tables. I don’t see any problem. But since I’m not a pro I’m thinking I may have overlooked something. The tub I’m thinking of is 254 Lbs and 60″ long and would be perpendicular to the joist direction.
Any ideas or suggestions would be appreciated!
Thanks
Replies
That tub, full of water (~350 lbs), plus a bather (assume 175 lbs) totals less than 800 lbs. Probably not much more than the marble and existing tub that you are removing. I say you're good. Getting the tub up the stairs will be the fun part.
Getting the tub up the stairs will be the fun part.
LOL....that's what I envisioned this thread being about!
Hey wavy...sounds like yer good to go!
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Thank you all for taking the time to reply. For the really fun part of dragging the tub up the stairs, we're thinking of wrapping it in a huge blanket and sliding it up the carpeted stairs. I've 3 strong young helpers. If that doesn't work, we'll try something else."No hill for a stepper!" as my dear old dad used to say.Thanks, again-wavy
I agree with RedfordHenry.
2x10 16" oc for basically a 10' span, covered by 1 1/8" of ply is a good floor. A very good floor.
To noodle this a little, 2x10 on 16" centers at 15' span covered by 3/4" ply is "rated" for 50#/ft. sq. (by my local code at least). Assuming the tub is 5' long by 2' wide = 10 ft. sq. = max distributed load of 500# on that floor area. You say your tub is 254# on that framing and subfloor. Should be no trouble at all.
In more of a reality, your 1 1/8" subfloor will do a good job of distributing that load, plus the tub is likely wider than 2', plus your span is a good deal shorter than the design max for a 2x10, plus the remainder of the floor is unlikely to ever see anywhere near its total design load so I'd think you are more than good to go.
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