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Support For Bathtub

ncbreef

Registered User
Joined
May 1, 2021
Messages
1
Location
raleigh nc
@ ! @

Seth,

From the `15 IRC,
View attachment 2538

While no specific requirement for supporting a freestanding tub
is in the Codes, the framing underneath must be able to support
fully the loads imposed on them.


FWIW, ...a lot of construction managers & contractors are known
to talk the talk, but NOT be able to support it with actual Code
references. :mad:


@ ! @
Thanks Seth. So here is how I ended up at this forum. I have rebuilt a 1300 sq ft house in Raleigh - all new framing in every direction. 2nd bathroom will get a tub, (like the cat iron pictured a few posts up) Tub with 60 gallons weighs about 750#s, then the big faucet and plumbing have to add at least 10#s and I weight 200. It is a two person tub, so that adds a tiny bit more. either way we are about 950 with just me. at 121/2 sq ft or so of overall load space that is about 75lbs per sq ft. This house started out as a 600 sq ft bungalow and was added on and on over the years - hence having to totally rebuild. it is on a crawl space and there are numerous foundations, not just a simple rectangle. we put new, treated sills, band and the entire floor system. this particular span is about 10'. we used some 2/10s where the tub was going to be (not knowing the actual weight when we built) and the rest of this part of the floor system is 2/8s. we did do a box in (have to get pics to explain) as per the framer for extra strength. now that I know the actual weight not sure if it is strong enough. Options I have considered ; pouring a pier or two and using a 6x6 treated to sit under the floor joists resting on the pier - that would distribute the weight to the ground and take a lot of strain off the joists, no? I got the idea from the way the engineer designed the cathedral LVL system, 5 piers, one post at 15' thoughts?
 

ADAguy

Sawhorse
Joined
Sep 11, 2013
Messages
5,863
Location
California
Moving in the right direction, shorter span, closer spacing, add pier, better support. no inspection in your area?
My 1905 has a C.I. claw and ball on original framing and it supports both of us.
 
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