However the limit on total deflection is span 720 resulting in the need for total deflection to be only 0 50 half of the 1 00 value for span 360.
Floor joist supportfor tile.
Tile over wood subfloor.
You must consider all of the weight the floor joists must be able to support.
Joists are spaced at regular intervals much like the studs in a wall frame.
This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction.
Obviously to do this then the joists have to be placed to reflect this exact positioning.
True floor joist span calculations can only be made by a structural engineer or contractor.
Also when installing the joist supports you need to make sure that they are level.
They are covered with subflooring panels of plywood or oriented strandboard osb to complete the floor s structural assembly and create the solid continuous platform on which you install tile carpet or other finish flooring.
Cut 1 5 extra on the beam side and 3 extra on the other side.
The floor framing for bathtubs requires special attention.
However you should take a little extra time to double check to make sure that they are all level.
A standard bathtub can hold between 40 and 60 gallons of water.
If we use the same joist total deflection will be 1 50 1 25 0 25.
Attach joists using joist hangers the project shouldn t take you more than a few hours.
Hi a question regards setting out velux windows on a new extension roof basically do the velux s have to be spaced out so that the tiles fit as either a full or half tile to the edges of the velux.
My question is should the tiles be placed so they are perpendicular with the floor joists or can they be laid parallel to the joists.
Plywood and osb are the two most common materials used for floor decking and typically they are 5 8 or 3 4 thick.
If the floor was built using the general 16 inch spacing you can expect a bathroom floor to safely hold 40 psf.
Planning on laying tile in our house.
The tiles are 7in x 20in.
2 temporarily support the 3 joists that pass under the shower pan area on either side of that area.
In extreme cases jim and rich have advised additional joists be put in place.
So a 5 by 10 foot bathroom floor generally supports up to 2 000 pounds.
4 add a single 2x10 header between the doubled joists to carry the 1 stub joists from the beam.
We re putting down cement backer board and then ceramic tile.
3 cut out the joists under the area to be lowered.