DIY Home Improvement Forum banner
1 - 10 of 10 Posts

·
Registered
Joined
·
46 Posts
Discussion Starter · #1 ·
I want to put a cast iron tub in the second floor of a 1903 Victorian. The joists are 2x10, 16oc. I think they span 16 feet but I am sistering them to span the length of the bathroom which is 5 feet. This will make for 5 2x10's spanning 5 feet.

A clawfoot weighs about 300, plus a human and water, for a total of upwards of 700 pounds. Will the joists be able to carry the load?
 

·
Registered
Joined
·
46 Posts
Discussion Starter · #6 ·
My question isn't only about the load capacity of said joists, but a more nuanced interest in whether the rim upon which they will be resting might be impacted as well as surrounding structural components I may not even know about or know enough about to consider.
 

·
Registered User
Joined
·
11,730 Posts
I'm still trying to figure how to sister a 16' span down to 5', without closer bearing. Could anyone explain that to me? Be safe, GBAR
 

·
Registered User
Joined
·
11,730 Posts
If the span is 16', by looking at the ceiling of the room size downstairs, the bath 5' lands somewhere in that span.

To just add a sister joist next to a longer joist, you're just adding more weight.

The span has not changed any, unless you add a closer bearing point.

The good news is the old joists are a full 2"x10", real measurement. With today's joist that size, is rated at 40# live load, 10# dead load times 16' = 800# per square foot. Minus any walls, other fixtures, or adjoining room weight (dressers, beds, etc.)

Be safe, GBAR
 
1 - 10 of 10 Posts
Top