Floor Joist Splice Detail

And that leads to a wavy deck surface.

Floor joist splice detail.

Here is a pathetic attempt to splice some floor joists under the bathroom. To help keep joists flat always attach blocking perpendicular to the joists. If additional holes are required beyond the scope of the field cut holes table in the floor system contact a licensed professional engineer for guidance before cutting. Drooping and joist sag can be seen in the photo.

Floor joists lapping splicing 2013 california building code section 2308 8 table 2304 9 1 the following are general requirements for floor joist lapping and splicing based on the 2013 ca building code. A day until they re level. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall. Use narrower lumber 2x8 blocking on 2x10 joists so the blocking looks less conspicuous from a distance.

Then set new joists same height as existing ones alongside the old. This handout is intended to provide only general information for further information contact the building safety division. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in. The long view makes the overlap seem longer but i believe the nearest one is less than a foot with very few nails.

Believe it or not this kind of poor workmanship is not that uncommon. Tack a beam under the sagging joists. No splices in studs joists or other load carrying members may be made without prior engineering review and specific details for any such splice s.