I've attached two pictures, the current floor plan and the new one. The new one has the free standing tub in the master and a larger window. The stairs aren't drawn but they are directly across the hallway from the new laundry location.
The client would like marble floors in both bathrooms. The new laundry room will have a vinyl floor.
The front of house side of the hallway is where the bearing point is for the floor joists. They are 2x10's spanning 15' this calculates to a deflection of L/318. We don't plan to take up the hallway floor as part of the project. This is a second floor with a dining room underneath so no way to add a beam and shorten the span. Well technically we could do a flush beam, but I think that blows the budget...
Doubling up the 2x10's wouldn't get us to L/720 (required for marble). We also wouldn't be able to get the new joists all the way to the bearing point without tearing up the hallway floor. It may not matter for this discussion anyway, but would you have to sister all the way to the bearing point? It would seem that you're greatly increasing the stiffness of the floor if you got within a a couple feet of the bearing point.
The client (who is probably smarter than I am...) has proposed 2x4's glued and screwed to the sides of the joist at the top and bottom for a total of 4 per joist. He feels like this would get to at deflection rating over L/1000 based on calculations he did (that I didn't fully follow). It makes sense to me that it could work, but is there a way of knowing that it would work vs just hoping it works and trying it out?
Thanks for any help you guys can be.
The client would like marble floors in both bathrooms. The new laundry room will have a vinyl floor.
The front of house side of the hallway is where the bearing point is for the floor joists. They are 2x10's spanning 15' this calculates to a deflection of L/318. We don't plan to take up the hallway floor as part of the project. This is a second floor with a dining room underneath so no way to add a beam and shorten the span. Well technically we could do a flush beam, but I think that blows the budget...
Doubling up the 2x10's wouldn't get us to L/720 (required for marble). We also wouldn't be able to get the new joists all the way to the bearing point without tearing up the hallway floor. It may not matter for this discussion anyway, but would you have to sister all the way to the bearing point? It would seem that you're greatly increasing the stiffness of the floor if you got within a a couple feet of the bearing point.
The client (who is probably smarter than I am...) has proposed 2x4's glued and screwed to the sides of the joist at the top and bottom for a total of 4 per joist. He feels like this would get to at deflection rating over L/1000 based on calculations he did (that I didn't fully follow). It makes sense to me that it could work, but is there a way of knowing that it would work vs just hoping it works and trying it out?
Thanks for any help you guys can be.
