Floor Framing Support Wall Above Parallel To Joists

The blocking provides a nailing surface for walls that fall between joists and serves as an evenly spaced fastening surface for finish materials such as drywall.

Floor framing support wall above parallel to joists.

You may need to lift insulation or plywood to see the joists. Nonetheless this does not ensure good floor performance. When i draw plans i locate joists under bearing walls only for parallel walls off layout but i do it with two joists spaced apart the depth of wallplates above. Score 1 for being load bearing.

This wall is running parallel to the floor joists above see picture 4. Score 1 for being non load bearing. Unless you have a finished attic the ceiling joists are typically exposed. Makes the plumbers and electricians smile.

The recommended detail for. Generally floor or ceiling joists run parallel to the rafters. You would be able to check if this is the case in your home by going up into the attic. In some circumstances the wall s top plate aligns with a parallel joist which provides an anchorage surface but still requires blocking to accommodate ceiling drywall.

For better performance the designer may wish to add a joist or blocking panels below the non bearing wall. However the floor joists must also be adequate to support the additional load from the wall. Thus for a 2x4 bearing wall two joists are below spaced 3 1 2 apart directly under. If the joists are parallel to the new wall adjust the layout so that the wall is directly under a joist.

However there is a large double 2x10 header above the entry way see picture 4 in this wall supported by a jack stud on either end see picture 5. If you have 3 or 4 inch diameter pipes running through the wall make the wall from 2 x 6 inch boards.