Double Header Floor Joist

When a load is applied to one side of a double joist by another joist or header for example then the double joist must be connected together so both joist.

Double header floor joist.

Direct nail the first header in to the cut joist and through the trimmer joists in to the header. Double and triple joist hangers. Floor is 11 7 8 tji. Add the second header and direct nail this header through the trimmer joists.

Wondering what preferences are here. Double and triple joist hangers are wider to accommodate either a thicker piece of lumber or two or three joists placed side by side. Most floor joists consist of 2 by 6 inch lumber but they can use 2 by 8 or 2 by 10 as well which will require longer joist hangers. To stabilize the cut joists you ll have to install headers that run between the solid joists on either side of the cut joists.

Now i need a double header located directly above the bottom of the staircase for two more tji to. Additional support for the floor joists is achieved by nailing the ends of the joists into headers. Use 16 d common nails and make sure the tops of the joists are flush. There is a 4 wide staircase cutout that runs parrallel to i joists right in the center of the floor.

Doubled up the tjis with blocking between them on either side of the staircase. Section r502 10 of the international residential code states that header joists can be the same size as the floor joists when the header joist span isn t greater than 4 feet but if the header joist span is more than 4 feet you ll need to double the header joist and ensure that it s capable of. Nail the double headers to each other three 16 d common nails every foot.