We have a stair landing that is approx. 4 feet wide and 2 1/2 feet long. The 4 foot wide side rests on the outside concrete block wall. One inner corner appears to be held up by a 2x8 and 2x4, nailed together going down approx. 5 feet to rest on the concrete basement floor.
The other inner corner is buried possibly into a chimney I'm going to remove. It does not transfer anything else above it, and must support the landing and top of the basement stairs.
For a 4 foot by 2 1/2 foot landing is a 2x8 and 2x4 nailed together sufficient to support 1 corner of the landing? I have searched several stair building books and they all gloss over this.