The Kitchen Wall the Lumberyard Said Was Not Bearing
A contractor is asked to remove a 14 ft section of wall between a kitchen and dining room in a one-story ranch and open it to a flush ceiling. The plan sheet, which carries no engineer's stamp, shows 2x8 floor joists at 16 in. o.c. spanning from the exterior side wall to a center steel girder on lally columns, and a 4/12 gable roof with 2x6 rafters and a ridge board. The wall runs parallel to the girder, about 5 ft from it, with the joists crossing over it. In the basement, one 2x8 joist has been notched 2-1/2 in. deep at mid-span for a waste line. A 4 in. cast iron stack and a 3 in. drain run inside the wall, and a switch leg and two receptacles are in it. The homeowner says, 'A guy at the lumberyard says it is not bearing,' and wants it opened Saturday.
1. How do you determine whether this wall is load-bearing, and what field evidence would change your answer?
Read the worked answer
You cannot answer this from the drawing alone, and a lumberyard opinion is not evidence. Work the load path top-down and bottom-up.
Look up:
- Do the joists actually run continuously over the wall, or are there butt joints, laps, or a built-up member landing on it? Continuity is the single most important observation, and it is visible only from the basement with the insulation pulled back.
- Do any ceiling joists, rafters, or partitions above land on the wall line? A wall can be non-bearing for floor load and still be carrying ceiling or roof load.
- Is the wall a braced wall line for the structure? Removing it can matter even when it carries no gravity load.
Look down: is there a footing, pier, or beam beneath the wall in the basement? A bearing wall without a footing is a hint that the original framing changed at some point.
Answer would change if: the joists are spliced over the wall, anything above lands on it, there is a footing beneath, or the joists appear undersized for a 13 ft clear span without it. In this house, with joists spanning exterior wall to girder and a wall 5 ft off the girder, the wall is a strong candidate for non-bearing - but that is a conclusion to verify, not to assume. Pull the original permit file and any prior alteration records before you commit.
2. Assume the wall is bearing. What has to happen before a saw touches it - approvals, design, and the shoring sequence?
Read the worked answer
Approvals and design first:
- A Massachusetts registered design professional's sealed plan for the header and posts, sized for the actual tributary width, not a rule of thumb. Expect a built-up or LVL beam and, critically, point loads delivered to new posts with a load path to a new footing in the basement - that footing is the step that gets skipped.
- A permit amendment for the change in scope (removal of a bearing wall). This is a structural alteration, and the original permit and unstamped sheet do not cover it.
Shoring sequence:
- Install temporary studs or posts on both sides at roughly 4 ft on center, snug to the ceiling, with a top plate to spread the load - and confirm a floor below that can take it.
- Remove the wall in stages, never all at once, keeping the shoring tight.
- Set the header with temporary jack posts, check it for level and bearing (full bearing on the king studs/jack studs, not on a cut nailer).
- Install permanent posts or columns with proper bearing plates; verify the basement footing before loading it.
- Remove shoring only after the header and posts are fully fastened and inspected.
Saturday is not a realistic start date. The sealed plan and the permit amendment drive the schedule, and the framing inspection has to happen before anything is closed up.
3. The notched joist and the plumbing and wiring in the wall: what do you do, and in what order?
Read the worked answer
The notch is a structural defect that must be surfaced, not covered. A 2-1/2 in. notch in a 7-1/4 in. joist at mid-span violates the framing rules twice over: notches in solid lumber joists are limited to about one-sixth of the depth and are not permitted in the middle third of the span. This joist has lost a third of its depth exactly where bending stress peaks. The remedy is a full-length sister or an engineer's repair detail, inspected and documented before any ceiling goes back. Point it out to the homeowner in writing - if the wall is bearing and carries load to that region, the two issues compound.
The stack and drain: relocation is plumbing work by a licensed plumber under a plumbing permit. The new route must hold slope (about 1/4 in. per ft for the 3 in. drain), maintain venting, and support the cast iron properly - a cut cast iron stack needs support and a shielded coupling, not a fernco hung in air. The electrical switch leg and receptacles need a licensed electrician to reroute in the new wall with boxes accessible and cables protected.
Order of operations: sealed design and permit amendment -> temporary shoring and temporary support of the stack -> plumbing and electrical relocation -> header and post installation -> framing, plumbing, and electrical rough inspections -> insulation and close-up. Doing the plumbing after the beam is in means cutting into a finished header envelope for slope.