Due to an old water damage, we are forced to replace 3 (4 including nailed together) floor joists that have rotted. The question is which work procedure is most appropriate between supporting up and replacing one joist at a time compared to supporting up and replacing all three floor joists at once?
Simple description of the construction
The green-marked joists in the image that need to be replaced are loaded by the floor's own weight. The two nailed-together red-marked joists that need to be replaced have the chimney base and upper part of the chimney foundation as supports, which carry the semi-party walls on the two floors above as well as weight from the attic floor and roof.
The cross braces will be replaced in four of the sections.
You can't place the new rule on the other side of the existing one and then remove the existing one and possibly put a new rule where the existing one was?
Hello Joppa83. There is nothing around the joist at the sill that prevents the method you suggest. The question is also whether safety props are needed one floor above, to relieve the load on the joist that takes up the load from the semi-load-bearing walls on the floors above. That props in the basement and the floor above are placed directly under each other to reduce the risk of overloading the props in the basement.
Perhaps there is someone knowledgeable reading this who is familiar with the ordinary workflow for replacing the flooring structure on the ground floor of a multi-story house that is stick-built?
Is it reasonable for it to take 3 days for 2 professionals to demolish, brace, replace floor joists, and restore the ceiling according to the situation above? The question is posed due to a received quotation.
They note the material consumption, which I think matches well with what needs to be replaced, but regarding the workflow, it only states the total number of hours and that two people will perform the action. If prop-up is required on several floors because of this, I can understand that it becomes more complicated, but 48 hours in total feels like 16-24 hours too much.
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