Double Header Floor Joist

Direct nail the first header in to the cut joist and through the trimmer joists in to the header.

Double header floor joist.

Nail the double headers to each other three 16 d common nails every foot. There is a 4 wide staircase cutout that runs parrallel to i joists right in the center of the floor. Double and triple joist hangers are wider to accommodate either a thicker piece of lumber or two or three joists placed side by side. 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.

However if the loading is applied from above through floor sheathing through a load bearing wall or post that rests on both joists then no attachment between joists is required. Add the second header and direct nail this header through the trimmer joists. Floor is 11 7 8 tji. To stabilize the cut joists you ll have to install headers that run between the solid joists on either side of the cut joists.

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

Wondering what preferences are here. Headers run perpendicular to the direction of the joists and you will attach the headers to the ends of the cut joists for support. You ll need headers on both sides of the new opening.